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elly.soekris.bridge
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#!/bin/bash
#
# last modified 2018.07.22
#
set -o nounset
set -o errexit
#set -o noclobber
set -o noglob
############################ definitions ###############################
# WORLD = Internet nic
# MEDIALAN = Media LAN nic (bridge with LAN and WIFI)
# OVPN = OpenVPN tunnel
IPT=$(which iptables)
IPT6=$(which ip6tables)
EBT=$(which ebtables)
IPS=$(which ipset)
WORLD="enp5s0"
MEDIALAN="br0"
#WLAN="wlp13s0"
GUESTW="enp11s0"
#OVPN="tun0"
#OVPNT="tun1"
HE6="hipv6"
MOD=$(which modprobe)
MEDIALANNET="192.168.77.0/24"
MEDIALANNET6="fd54:fc9a:8b7a:765e::/64"
GUESTWNET="192.168.99.0/24"
GUESTWNET6="fd56:fc9a:8b7a:765e::/64"
#OVPNNET="192.168.111.0/24"
#OVPNTNET="192.168.112.0/24"
#OVPNT6NET="fd51:fc9a:8b7a:765e::0/64"
TFFM="216.66.80.30"
HE6NET="2001:470:1f0a:3c::/64"
BADHOSTSLIST="blackhole"
INTBAD="intbad"
INTGOOD="intgood"
INTWHITE="intwhite"
KAKTUS="kaktus"
case "$1" in
start)
echo "starting firewall"
############################ load modules ##############################
### iptables-Modul
${MOD} x_tables
${MOD} ip_tables
${MOD} ip6table_filter
${MOD} ip6_tables
# ${MOD} nf_nat_ftp
### Connection-Tracking-Module
${MOD} nf_conntrack nf_conntrack_helper=0
# ${MOD} nf_conntrack_ipv6
# ${MOD} nf_conntrack_irc
# ${MOD} nf_conntrack_ftp
############################ proc-settings #############################
### activate forwarding
echo 1 > /proc/sys/net/ipv4/ip_forward
echo 1 > /proc/sys/net/ipv6/conf/all/forwarding
### Max. 500/second (5/Jiffie)
echo 10 > /proc/sys/net/ipv4/icmp_ratelimit
echo 10 > /proc/sys/net/ipv6/icmp/ratelimit
### ram and ram-timing for IP-de/-fragmentation
#echo 262144 > /proc/sys/net/ipv4/ipfrag_high_thresh
echo 196608 > /proc/sys/net/ipv4/ipfrag_low_thresh
echo 30 > /proc/sys/net/ipv4/ipfrag_time
#echo 262144 > /proc/sys/net/ipv6/ip6frag_high_thresh
echo 196608 > /proc/sys/net/ipv6/ip6frag_low_thresh
echo 30 > /proc/sys/net/ipv6/ip6frag_time
### TCP-FIN-Timeout protection against DoS-attacks
echo 30 > /proc/sys/net/ipv4/tcp_fin_timeout
### max 3 answers to a TCP-SYN
echo 3 > /proc/sys/net/ipv4/tcp_retries1
### repeat TCP-packets max 15x
echo 15 > /proc/sys/net/ipv4/tcp_retries2
### disable source routing
echo 0 > /proc/sys/net/ipv4/conf/all/accept_source_route
echo 0 > /proc/sys/net/ipv6/conf/all/accept_source_route
### ignore bogus icmp_errors
echo 1 > /proc/sys/net/ipv4/icmp_ignore_bogus_error_responses
### deactivate source redirects
echo 0 > /proc/sys/net/ipv4/conf/all/accept_redirects
echo 0 > /proc/sys/net/ipv6/conf/all/accept_redirects
### deactivate source route
echo 0 > /proc/sys/net/ipv4/conf/all/accept_source_route
echo 0 > /proc/sys/net/ipv6/conf/all/accept_source_route
### no helper
echo 0 > /proc/sys/net/netfilter/nf_conntrack_helper
############################ cleanup tables ############################
${IPT} -F
${IPT} -t nat -F
${IPT} -t mangle -F
${IPT} -t nat -X
${IPT} -t mangle -X
${IPT} -X
${IPT6} -F
${IPT6} -t mangle -F
${IPT6} -t mangle -F
${IPT6} -t nat -X
${IPT6} -t mangle -X
${IPT6} -X
### ipset
#${IPS} flush ${BADHOSTSLIST}
#${IPS} create ${BADHOSTSLIST} hash:ip maxelem 200000 hashsize 4096
${IPS} restore < /root/${BADHOSTSLIST}.bak
#${IPS} flush ${INTBAD}
#${IPS} create ${INTBAD} hash:mac hashsize 2048
##${IPS} restore < /root/${INTBAD}.bak
#${IPS} flush ${INTGOOD}
#${IPS} create ${INTGOOD} hash:mac hashsize 2048
##${IPS} restore < /root/${INTGOOD}.bak
#${IPS} flush ${INTWHITE}
#${IPS} create ${INTWHITE} hash:ip maxelem 2000 hashsize 4096
##${IPS} restore < /root/${INTWHITE}.bak
#${IPS} flush ${KAKTUS}
#${IPS} create ${KAKTUS} hash:ip maxelem 65536 hashsize 1024
##${IPS} restore < /root/${KAKTUS}.bak
########################### default policies ###########################
${IPT} -P INPUT DROP
${IPT} -P OUTPUT ACCEPT
${IPT} -P FORWARD DROP
${IPT6} -P INPUT DROP
${IPT6} -P OUTPUT ACCEPT
${IPT6} -P FORWARD DROP
#${EBT} -P INPUT DROP
#${EBT} -P OUTPUT ACCEPT
#${EBT} -P FORWARD DROP
###################### allow loopback networking #######################
### MY_LOOPY Chain
${IPT} -N MY_LOOPYv4
${IPT6} -N MY_LOOPYv6
### loopback traffic goes to MY_LOOPY
${IPT} -A INPUT -i lo -j MY_LOOPYv4
${IPT6} -A INPUT -i lo -j MY_LOOPYv6
${IPT} -A MY_LOOPYv4 -i lo -j ACCEPT
${IPT6} -A MY_LOOPYv6 -i lo -j ACCEPT
#----------------------------------------------------------------------#
########################## creation of tables ##########################
###########################################################################################################################################################################################################
############################ INPUT ###################################
########################################################################
### connection tracking for INPUT
${IPT} -A INPUT -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
${IPT6} -A INPUT -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
#${IPT} -A INPUT -m conntrack --ctstate INVALID -j DROP
#${IPT6} -A INPUT -m conntrack --ctstate INVALID -j DROP
#${EBT} -A INPUT -m conntrack --ctstate INVALID -j DROP
###########################################################################################################################################################################################################
###################### nic for Internet: WORLD ######################
########################################################################
### MY_ICMP_WORLD
### create MY_ICMP_WORLD rules
${IPT} -N MY_ICMP_WORLDv4
${IPT6} -N MY_ICMP_WORLDv6
### WORLD icmp traffic goes to MY_ICMP_WORLD
${IPT} -A INPUT -i ${WORLD} -p icmp -j MY_ICMP_WORLDv4
${IPT6} -A INPUT -i ${WORLD} -p icmpv6 -j MY_ICMP_WORLDv6
### drop badhosts
${IPT} -A MY_ICMP_WORLDv4 -i ${WORLD} -m set --match-set ${BADHOSTSLIST} src -p icmp -j DROP
${IPT} -A MY_ICMP_WORLDv4 -p icmp --icmp-type destination-unreachable -m conntrack --ctstate RELATED -j ACCEPT
# ${IPT} -A MY_ICMP_WORLDv4 -p icmp --icmp-type fragmentation-needed -m conntrack --ctstate RELATED -j LOG --log-prefix "world_icmp-fragmentation-needed: "
${IPT} -A MY_ICMP_WORLDv4 -p icmp --icmp-type fragmentation-needed -m conntrack --ctstate NEW -j ACCEPT
${IPT} -A MY_ICMP_WORLDv4 -p icmp --icmp-type parameter-problem -m conntrack --ctstate RELATED -j ACCEPT
${IPT} -A MY_ICMP_WORLDv4 -p icmp --icmp-type echo-request -m limit --limit 10/sec -j ACCEPT
${IPT} -A MY_ICMP_WORLDv4 -p icmp --icmp-type echo-request -m conntrack --ctstate NEW -j ACCEPT
# ${IPT} -A MY_ICMP_WORLDv4 -p icmp --icmp-type echo-reply -m conntrack --ctstate ESTABLISHED,RELATED -j LOG --log-prefix "world_icmp-echo-reply: "
${IPT} -A MY_ICMP_WORLDv4 -p icmp --icmp-type echo-reply -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
### log rest
#${IPT} -A MY_ICMP_WORLDv4 -j LOG --log-prefix "forbidden from world v4 icmp: "
### standard policy
${IPT} -A MY_ICMP_WORLDv4 -j DROP
### MY_ICMP_WORLDv6
${IPT6} -A MY_ICMP_WORLDv6 -p icmpv6 --icmpv6-type destination-unreachable -m conntrack --ctstate RELATED -j ACCEPT
${IPT6} -A MY_ICMP_WORLDv6 -p icmpv6 --icmpv6-type packet-too-big -m conntrack --ctstate RELATED -j ACCEPT
${IPT6} -A MY_ICMP_WORLDv6 -p icmpv6 --icmpv6-type time-exceeded -m conntrack --ctstate RELATED -j ACCEPT
${IPT6} -A MY_ICMP_WORLDv6 -p icmpv6 --icmpv6-type parameter-problem -m conntrack --ctstate RELATED -j ACCEPT
${IPT6} -A MY_ICMP_WORLDv6 -p icmpv6 --icmpv6-type echo-request -m limit --limit 10/sec -j ACCEPT
${IPT6} -A MY_ICMP_WORLDv6 -p icmpv6 --icmpv6-type echo-reply -j ACCEPT
### router advertisements
${IPT6} -A MY_ICMP_WORLDv6 -i ${WORLD} -p icmpv6 --icmpv6-type router-solicitation -j ACCEPT
${IPT6} -A MY_ICMP_WORLDv6 -i ${WORLD} -p icmpv6 --icmpv6-type router-advertisement -j ACCEPT
### router neighbor advertisements
${IPT6} -A MY_ICMP_WORLDv6 -i ${WORLD} -p icmpv6 --icmpv6-type neighbor-solicitation -j ACCEPT
${IPT6} -A MY_ICMP_WORLDv6 -i ${WORLD} -p icmpv6 --icmpv6-type neighbor-advertisement -j ACCEPT
### mobile-ipv6
#${IPT6} -A MY_ICMP_WORLDv6 -p icmpv6 --icmpv6-type 144 -j ACCEPT
#${IPT6} -A MY_ICMP_WORLDv6 -p icmpv6 --icmpv6-type 146 -j ACCEPT
### Inverse Neighbor Discovery
${IPT6} -A MY_ICMP_WORLDv6 -p icmpv6 --icmpv6-type 141 -j ACCEPT
${IPT6} -A MY_ICMP_WORLDv6 -p icmpv6 --icmpv6-type 142 -j ACCEPT
### Multicast groups + multicast listener
#${IPT6} -A MY_ICMP_WORLDv6 -p icmpv6 --icmpv6-type 130 -j ACCEPT
#${IPT6} -A MY_ICMP_WORLDv6 -p icmpv6 --icmpv6-type 131 -j ACCEPT
#${IPT6} -A MY_ICMP_WORLDv6 -p icmpv6 --icmpv6-type 132 -j ACCEPT
#${IPT6} -A MY_ICMP_WORLDv6 -p icmpv6 --icmpv6-type 143 -j ACCEPT
### Send - Certification Path Soli./Advert.
#${IPT6} -A MY_ICMP_WORLDv6 -p icmpv6 --icmpv6-type 148 -j ACCEPT
#${IPT6} -A MY_ICMP_WORLDv6 -p icmpv6 --icmpv6-type 149 -j ACCEPT
### multicast router
#${IPT6} -A MY_ICMP_WORLDv6 -p icmpv6 --icmpv6-type 151 -j ACCEPT
#${IPT6} -A MY_ICMP_WORLDv6 -p icmpv6 --icmpv6-type 152 -j ACCEPT
#${IPT6} -A MY_ICMP_WORLDv6 -p icmpv6 --icmpv6-type 153 -j ACCEPT
### log rest
#${IPT6} -A MY_ICMP_WORLDv6 -j LOG --log-prefix "forbidden from world v6 icmp: "
### standard policy
${IPT6} -A MY_ICMP_WORLDv6 -j DROP
#----------------------------------------------------------------------#
### MY_TCP_WORLD
### create MY_TCP_WORLD rules
${IPT} -N MY_TCP_WORLDv4
${IPT6} -N MY_TCP_WORLDv6
### WORLD tcp traffic goes to MY_TCP_WORLD
${IPT} -A INPUT -i ${WORLD} -p tcp -j MY_TCP_WORLDv4
${IPT6} -A INPUT -i ${WORLD} -p tcp -j MY_TCP_WORLDv6
### drop badhosts
${IPT} -A MY_TCP_WORLDv4 -i ${WORLD} -m set --match-set ${BADHOSTSLIST} src -p tcp -j DROP
### drop stealth scans etc. ###
## no flags
#${IPT} -A MY_TCP_WORLDv4 -p tcp -m tcp --tcp-flags ALL NONE -j DROP
## SYN and FIN flags
#${IPT} -A MY_TCP_WORLDv4 -p tcp -m tcp --tcp-flags SYN,FIN SYN,FIN -j DROP
## SYN and RST flags at the same time
#${IPT} -A MY_TCP_WORLDv4 -p tcp -m tcp --tcp-flags SYN,RST SYN,RST -j DROP
## FIN and RST flags at the same time
#${IPT} -A MY_TCP_WORLDv4 -p tcp -m tcp --tcp-flags FIN,RST FIN,RST -j DROP
## FIN but no ACK
#${IPT} -A MY_TCP_WORLDv4 -p tcp -m tcp --tcp-flags ACK,FIN FIN -j DROP
## PSH but no ACK
#${IPT} -A MY_TCP_WORLDv4 -p tcp -m tcp --tcp-flags ACK,PSH PSH -j DROP
## URG but no ACK
#${IPT} -A MY_TCP_WORLDv4 -p tcp -m tcp --tcp-flags ACK,URG URG -j DROP
### bla
${IPT} -A MY_TCP_WORLDv4 -p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG -j DROP
### SSH
#${IPT} -A MY_TCP_WORLDv4 -i ${WORLD} -m conntrack --ctstate NEW -p tcp --dport 23235 -j LOG --log-prefix "world_ssh-v4-access: "
${IPT} -A MY_TCP_WORLDv4 -i ${WORLD} -m conntrack --ctstate NEW -p tcp --dport 23235 -j ACCEPT
#${IPT} -A MY_TCP_WORLDv4 -i ${WORLD} -m conntrack --ctstate NEW -p tcp --dport 22 -j ACCEPT
#${IPT6} -A MY_TCP_WORLDv6 -i ${WORLD} -m conntrack --ctstate NEW -p tcp --dport 23235 -j LOG --log-prefix "world_ssh-v6-access: "
${IPT6} -A MY_TCP_WORLDv6 -i ${WORLD} -m conntrack --ctstate NEW -p tcp --dport 23235 -j ACCEPT
### openvpn
#${IPT} -A MY_TCP_WORLDv4 -i ${WORLD} -m conntrack --ctstate NEW -p tcp --dport 1195 -j LOG --log-prefix "world_openvpn-v4-tcp-access: "
#${IPT} -A MY_TCP_WORLDv4 -i ${WORLD} -m conntrack --ctstate NEW -p tcp --dport 1195 -j ACCEPT
#${IPT6} -A MY_TCP_WORLDv6 -i ${WORLD} -m conntrack --ctstate NEW -p tcp --dport 1195 -j LOG --log-prefix "world_openvpn-v6-tcp-access: "
#${IPT6} -A MY_TCP_WORLDv6 -i ${WORLD} -m conntrack --ctstate NEW -p tcp --dport 1195 -j ACCEPT
### log rest
# ${IPT} -A MY_TCP_WORLDv4 -j LOG --log-prefix "forbidden from world v4 tcp: "
# ${IPT6} -A MY_TCP_WORLDv6 -j LOG --log-prefix "forbidden from world v6 tcp: "
### drop rest
${IPT} -A MY_TCP_WORLDv4 -j DROP
${IPT6} -A MY_TCP_WORLDv6 -j DROP
#----------------------------------------------------------------------#
### MY_UDP_WORLD
### create MY_UDP_WORLD rules
${IPT} -N MY_UDP_WORLDv4
${IPT6} -N MY_UDP_WORLDv6
### WORLD tcp traffic goes to MY_TCP_WORLD
${IPT} -A INPUT -i ${WORLD} -p udp -j MY_UDP_WORLDv4
${IPT6} -A INPUT -i ${WORLD} -p udp -j MY_UDP_WORLDv6
### drop badhosts
${IPT} -A MY_UDP_WORLDv4 -i ${WORLD} -m set --match-set ${BADHOSTSLIST} src -p udp -j DROP
### OPENVPN_V2
#${IPT} -A MY_UDP_WORLDv4 -i ${WORLD} -m conntrack --ctstate NEW -p udp --dport 1194 -j LOG --log-prefix "world_openvpn-v4-udp-access: "
#${IPT} -A MY_UDP_WORLDv4 -i ${WORLD} -m conntrack --ctstate NEW -p udp --dport 1194 -j ACCEPT
#${IPT6} -A MY_UDP_WORLDv6 -i ${WORLD} -m conntrack --ctstate NEW -p udp --dport 1194 -j LOG --log-prefix "world_openvpn-v6-udp-access: "
#${IPT6} -A MY_UDP_WORLDv6 -i ${WORLD} -m conntrack --ctstate NEW -p udp --dport 1194 -j ACCEPT
### log rest
#${IPT} -A MY_UDP_WORLDv4 -j LOG --log-prefix "forbidden from world v4 udp: "
#${IPT6} -A MY_UDP_WORLDv6 -j LOG --log-prefix "forbidden from world v6 udp: "
### drop rest
${IPT} -A MY_UDP_WORLDv4 -j DROP
${IPT6} -A MY_UDP_WORLDv6 -j DROP
###########################################################################################################################################################################################################
####################### nic for intranet: MEDIALAN #######################
########################################################################
### MY_ICMP_MEDIALAN
### create MY_ICMP_MEDIALAN rules
${IPT} -N MY_ICMP_MEDIALANv4
${IPT6} -N MY_ICMP_MEDIALANv6
### MEDIALAN icmp traffic goes to MY_ICMP_MEDIALAN
${IPT} -A INPUT -i ${MEDIALAN} -p icmp -j MY_ICMP_MEDIALANv4
${IPT6} -A INPUT -i ${MEDIALAN} -p icmpv6 -j MY_ICMP_MEDIALANv6
# ${IPT6} -A INPUT -i ${MEDIALAN} -p icmpv6 -j ACCEPT
${IPT} -A MY_ICMP_MEDIALANv4 -p icmp --icmp-type destination-unreachable -m conntrack --ctstate RELATED -j ACCEPT
# ${IPT} -A MY_ICMP_MEDIALANv4 -p icmp --icmp-type fragmentation-needed -m conntrack --ctstate RELATED -j LOG --log-prefix "MEDIALAN_icmp-fragmentation-needed: "
${IPT} -A MY_ICMP_MEDIALANv4 -p icmp --icmp-type fragmentation-needed -m conntrack --ctstate RELATED -j ACCEPT
${IPT} -A MY_ICMP_MEDIALANv4 -p icmp --icmp-type parameter-problem -m conntrack --ctstate RELATED -j ACCEPT
${IPT} -A MY_ICMP_MEDIALANv4 -p icmp --icmp-type echo-request -m limit --limit 10/sec -j ACCEPT
${IPT} -A MY_ICMP_MEDIALANv4 -p icmp --icmp-type echo-request -m conntrack --ctstate NEW,ESTABLISHED,RELATED -j ACCEPT
# ${IPT} -A MY_ICMP_MEDIALANv4 -p icmp --icmp-type echo-reply -m conntrack --ctstate ESTABLISHED,RELATED -j LOG --log-prefix "MEDIALAN_icmp-echo-reply: "
${IPT} -A MY_ICMP_MEDIALANv4 -p icmp --icmp-type echo-reply -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
### log rest
#${IPT} -A MY_ICMP_MEDIALANv4 -j LOG --log-prefix "forbidden from lan v4 icmp: "
### standard policy
${IPT} -A MY_ICMP_MEDIALANv4 -j DROP
### drop badhosts
# ${IPT} -A MY_ICMP_MEDIALANv4 -i ${MEDIALAN} -m set --match-set ${INTBAD} src -p icmp -j DROP
# ${IPT} -A MY_ICMP_MEDIALANv6 -i ${MEDIALAN} -m set --match-set ${INTBAD} src -p icmpv6 -j DROP
### MY_ICMP_MEDIALANv6
${IPT6} -A MY_ICMP_MEDIALANv6 -p icmpv6 --icmpv6-type destination-unreachable -m conntrack --ctstate RELATED -j ACCEPT
${IPT6} -A MY_ICMP_MEDIALANv6 -p icmpv6 --icmpv6-type packet-too-big -m conntrack --ctstate RELATED -j ACCEPT
${IPT6} -A MY_ICMP_MEDIALANv6 -p icmpv6 --icmpv6-type time-exceeded -m conntrack --ctstate RELATED -j ACCEPT
${IPT6} -A MY_ICMP_MEDIALANv6 -p icmpv6 --icmpv6-type parameter-problem -m conntrack --ctstate RELATED -j ACCEPT
${IPT6} -A MY_ICMP_MEDIALANv6 -p icmpv6 --icmpv6-type echo-request -m limit --limit 10/sec -j ACCEPT
${IPT6} -A MY_ICMP_MEDIALANv6 -p icmpv6 --icmpv6-type echo-reply -j ACCEPT
### router advertisements
${IPT6} -A MY_ICMP_MEDIALANv6 -i ${MEDIALAN} -p icmpv6 --icmpv6-type router-solicitation -j ACCEPT
${IPT6} -A MY_ICMP_MEDIALANv6 -i ${MEDIALAN} -p icmpv6 --icmpv6-type router-advertisement -j ACCEPT
### router neighbor advertisements
${IPT6} -A MY_ICMP_MEDIALANv6 -i ${MEDIALAN} -p icmpv6 --icmpv6-type neighbor-solicitation -j ACCEPT
${IPT6} -A MY_ICMP_MEDIALANv6 -i ${MEDIALAN} -p icmpv6 --icmpv6-type neighbor-advertisement -j ACCEPT
### mobile-ipv6
#${IPT6} -A MY_ICMP_MEDIALANv6 -p icmpv6 --icmpv6-type 144 -j ACCEPT
#${IPT6} -A MY_ICMP_MEDIALANv6 -p icmpv6 --icmpv6-type 146 -j ACCEPT
### Inverse Neighbor Discovery
${IPT6} -A MY_ICMP_MEDIALANv6 -p icmpv6 --icmpv6-type 141 -j ACCEPT
${IPT6} -A MY_ICMP_MEDIALANv6 -p icmpv6 --icmpv6-type 142 -j ACCEPT
### Multicast groups + multicast listener
${IPT6} -A MY_ICMP_MEDIALANv6 -p icmpv6 --icmpv6-type 130 -j ACCEPT
${IPT6} -A MY_ICMP_MEDIALANv6 -p icmpv6 --icmpv6-type 131 -j ACCEPT
${IPT6} -A MY_ICMP_MEDIALANv6 -p icmpv6 --icmpv6-type 132 -j ACCEPT
${IPT6} -A MY_ICMP_MEDIALANv6 -p icmpv6 --icmpv6-type 143 -j ACCEPT
### Send - Certification Path Soli./Advert.
#${IPT6} -A MY_ICMP_MEDIALANv6 -p icmpv6 --icmpv6-type 148 -j ACCEPT
#${IPT6} -A MY_ICMP_MEDIALANv6 -p icmpv6 --icmpv6-type 149 -j ACCEPT
### multicast router
# ${IPT6} -A MY_ICMP_MEDIALANv6 -p icmpv6 --icmpv6-type 151 -j ACCEPT
# ${IPT6} -A MY_ICMP_MEDIALANv6 -p icmpv6 --icmpv6-type 152 -j ACCEPT
# ${IPT6} -A MY_ICMP_MEDIALANv6 -p icmpv6 --icmpv6-type 153 -j ACCEPT
### log rest
#${IPT6} -A MY_ICMP_MEDIALANv6 -j LOG --log-prefix "forbidden from lan v6 icmp: "
### standard policy
${IPT6} -A MY_ICMP_MEDIALANv6 -j DROP
#----------------------------------------------------------------------#
### MY_TCP_MEDIALAN
### create MY_TCP_MEDIALAN rules
${IPT} -N MY_TCP_MEDIALANv4
${IPT6} -N MY_TCP_MEDIALANv6
### MEDIALAN tcp traffic goes to MY_TCP_WORLD
${IPT} -A INPUT -i ${MEDIALAN} -p tcp -j MY_TCP_MEDIALANv4
${IPT6} -A INPUT -i ${MEDIALAN} -p tcp -j MY_TCP_MEDIALANv6
### drop badhosts
# ${IPT} -A MY_TCP_MEDIALANv4 -i ${MEDIALAN} -m set --match-set ${INTBAD} src -p tcp -j DROP
### drop stealth scans etc. ###
### no flags
#${IPT} -A MY_TCP_MEDIALANv4 -p tcp --tcp-flags ALL NONE -j DROP
### SYN and FIN flags
#${IPT} -A MY_TCP_MEDIALANv4 -p tcp --tcp-flags SYN,FIN SYN,FIN -j DROP
### SYN and RST flags at the same time
#${IPT} -A MY_TCP_MEDIALANv4 -p tcp --tcp-flags SYN,RST SYN,RST -j DROP
### FIN and RST flags at the same time
#${IPT} -A MY_TCP_MEDIALANv4 -p tcp --tcp-flags FIN,RST FIN,RST -j DROP
### FIN but no ACK
#${IPT} -A MY_TCP_MEDIALANv4 -p tcp --tcp-flags ACK,FIN FIN -j DROP
### PSH but no ACK
#${IPT} -A MY_TCP_MEDIALANv4 -p tcp --tcp-flags ACK,PSH PSH -j DROP
### URG but no ACK
#${IPT} -A MY_TCP_MEDIALANv4 -p tcp --tcp-flags ACK,URG URG -j DROP
### bla
${IPT} -A MY_TCP_MEDIALANv4 -p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG -j DROP
### DHCPD
#${IPT} -A MY_TCP_MEDIALANv4 -i ${MEDIALAN} -m conntrack --ctstate NEW -p tcp --dport 67 -j LOG --log-prefix "lan_dhcpd-67-v4-tcp-access: "
${IPT} -A MY_TCP_MEDIALANv4 -i ${MEDIALAN} -m conntrack --ctstate NEW -p tcp --dport 67 -j ACCEPT
#${IPT6} -A MY_TCP_MEDIALANv6 -i ${MEDIALAN} -m conntrack --ctstate NEW -p tcp --dport 547 -j LOG --log-prefix "lan_dhcpd-v6-tcp-547-access: "
${IPT6} -A MY_TCP_MEDIALANv6 -i ${MEDIALAN} -m conntrack --ctstate NEW -p tcp --dport 547 -j ACCEPT
### DNS
#${IPT} -A MY_TCP_MEDIALANv4 -i ${MEDIALAN} -m conntrack --ctstate NEW -p tcp --dport 53 -j LOG --log-prefix "lan_dns-v4-tcp-access: "
${IPT} -A MY_TCP_MEDIALANv4 -i ${MEDIALAN} -m conntrack --ctstate NEW -p tcp --dport 53 -j ACCEPT
#${IPT6} -A MY_TCP_MEDIALANv6 -i ${MEDIALAN} -m conntrack --ctstate NEW -p tcp --dport 53 -j LOG --log-prefix "lan_dns-v6-tcp-access: "
${IPT6} -A MY_TCP_MEDIALANv6 -i ${MEDIALAN} -m conntrack --ctstate NEW -p tcp --dport 53 -j ACCEPT
### NTP
#${IPT} -A MY_TCP_MEDIALANv4 -i ${MEDIALAN} -m conntrack --ctstate NEW -p tcp --dport 123 -j LOG --log-prefix "lan_ntp-v4-tcp-access: "
#${IPT} -A MY_TCP_MEDIALANv4 -i ${MEDIALAN} -m conntrack --ctstate NEW -p tcp --dport 123 -j ACCEPT
#${IPT6} -A MY_TCP_MEDIALANv6 -i ${MEDIALAN} -m conntrack --ctstate NEW -p tcp --dport 123 -j LOG --log-prefix "lan_ntp-v6-tcp-access: "
#${IPT6} -A MY_TCP_MEDIALANv6 -i ${MEDIALAN} -m conntrack --ctstate NEW -p tcp --dport 123 -j ACCEPT
### squid
${IPT} -A MY_TCP_MEDIALANv4 -i ${MEDIALAN} -m conntrack --ctstate NEW -p tcp --dport 3128 -j ACCEPT
${IPT6} -A MY_TCP_MEDIALANv6 -i ${MEDIALAN} -m conntrack --ctstate NEW -p tcp --dport 3128 -j ACCEPT
### TOR
#${IPT} -A MY_TCP_MEDIALANv4 -i ${MEDIALAN} -m conntrack --ctstate NEW -p tcp --dport 9060 -j LOG --log-prefix "lan_tor-v4-tcp-access: "
#${IPT} -A MY_TCP_MEDIALANv4 -i ${MEDIALAN} -m conntrack --ctstate NEW -p tcp --dport 9060 -j ACCEPT
#${IPT6} -A MY_TCP_MEDIALANv6 -i ${MEDIALAN} -m conntrack --ctstate NEW -p tcp --dport 9060 -j LOG --log-prefix "lan_tor-v4-tcp-access: "
#${IPT6} -A MY_TCP_MEDIALANv6 -i ${MEDIALAN} -m conntrack --ctstate NEW -p tcp --dport 9060 -j ACCEPT
### IPSEC
#${IPT} -A MY_TCP_MEDIALANv4 -i ${MEDIALAN} -p 50 -j ACCEPT
#${IPT} -A MY_TCP_MEDIALANv4 -i ${MEDIALAN} -p 51 -j ACCEPT
### log rest
#${IPT} -A MY_TCP_MEDIALANv4 -j LOG --log-prefix "forbidden from lan v4 tcp: "
#${IPT6} -A MY_TCP_MEDIALANv6 -j LOG --log-prefix "forbidden from lan v6 tcp: "
### ssh
#${IPT} -A MY_TCP_MEDIALANv4 -i ${MEDIALAN} -m conntrack --ctstate NEW -p tcp --dport 23235 -j LOG --log-prefix "medialan_ssh-v4-tcp-access: "
${IPT} -A MY_TCP_MEDIALANv4 -i ${MEDIALAN} -m conntrack --ctstate NEW -p tcp --dport 23235 -j ACCEPT
#${IPT6} -A MY_TCP_MEDIALANv6 -i ${MEDIALAN} -m conntrack --ctstate NEW -p tcp --dport 23235 -j LOG --log-prefix "medialan_ssh-v6-tcp-access: "
${IPT6} -A MY_TCP_MEDIALANv6 -i ${MEDIALAN} -m conntrack --ctstate NEW -p tcp --dport 23235 -j ACCEPT
### drop rest
${IPT} -A MY_TCP_MEDIALANv4 -j DROP
${IPT6} -A MY_TCP_MEDIALANv6 -j DROP
#-------------------------------------------------------------------------------------------------------------------#
### MY_UDP_MEDIALAN
### create MY_UDP_MEDIALAN rules
${IPT} -N MY_UDP_MEDIALANv4
${IPT6} -N MY_UDP_MEDIALANv6
### MEDIALAN UDP traffic goes to MY_UDP_MEDIALAN
${IPT} -A INPUT -i ${MEDIALAN} -p udp -j MY_UDP_MEDIALANv4
${IPT6} -A INPUT -i ${MEDIALAN} -p udp -j MY_UDP_MEDIALANv6
### drop badhosts
# ${IPT} -A MY_UDP_MEDIALANv4 -i ${MEDIALAN} -m set --match-set ${INTBAD} src -p udp -j DROP
### DHCPD
#${IPT} -A MY_UDP_MEDIALANv4 -i ${MEDIALAN} -m conntrack --ctstate NEW -p udp --dport 67 -j LOG --log-prefix "lan_dhcpd-v4-67-udp-access: "
${IPT} -A MY_UDP_MEDIALANv4 -i ${MEDIALAN} -m conntrack --ctstate NEW -p udp --dport 67 -j ACCEPT
### pxe
#${IPT} -A MY_UDP_MEDIALANv4 -i ${MEDIALAN} -m conntrack --ctstate NEW -p udp --dport 69 -j ACCEPT
#${IPT6} -A MY_UDP_MEDIALANv6 -i ${MEDIALAN} -m conntrack --ctstate NEW -p udp --dport 547 -j LOG --log-prefix "lan_dhcpd-v6-udp-547-access: "
${IPT6} -A MY_UDP_MEDIALANv6 -i ${MEDIALAN} -m conntrack --ctstate NEW -p udp --dport 547 -j ACCEPT
### DNS
#${IPT} -A MY_UDP_MEDIALANv4 -i ${MEDIALAN} -m conntrack --ctstate NEW -p udp --dport 53 -j LOG --log-prefix "lan_dns-v4-udp-access: "
${IPT} -A MY_UDP_MEDIALANv4 -i ${MEDIALAN} -m conntrack --ctstate NEW -p udp --dport 53 -j ACCEPT
#${IPT6} -A MY_UDP_MEDIALANv6 -i ${MEDIALAN} -m conntrack --ctstate NEW -p udp --dport 53 -j LOG --log-prefix "lan_dns-v6-udp-access: "
${IPT6} -A MY_UDP_MEDIALANv6 -i ${MEDIALAN} -m conntrack --ctstate NEW -p udp --dport 53 -j ACCEPT
### NTP
#${IPT} -A MY_UDP_MEDIALANv4 -i ${MEDIALAN} -m conntrack --ctstate NEW -p udp --dport 123 -j LOG --log-prefix "lan_ntp-v4-udp-access: "
#${IPT} -A MY_UDP_MEDIALANv4 -i ${MEDIALAN} -m conntrack --ctstate NEW -p udp --dport 123 -j ACCEPT
#${IPT6} -A MY_UDP_MEDIALANv6 -i ${MEDIALAN} -m conntrack --ctstate NEW -p udp --dport 123 -j LOG --log-prefix "lan_ntp-v6-udp-access: "
#${IPT6} -A MY_UDP_MEDIALANv6 -i ${MEDIALAN} -m conntrack --ctstate NEW -p udp --dport 123 -j ACCEPT
### allow kaktus
#${IPT} -A MY_UDP_MEDIALANv4 -i ${MEDIALAN} -m set --match-set ${KAKTUS} src -p udp --dport 161 -j ACCEPT
### IPSEC
#${IPT} -A MY_UDP_MEDIALANv4 -i ${MEDIALAN} -m conntrack --ctstate NEW -p udp --dport 500 -j ACCEPT
### OPENVPN_V2
#${IPT} -A MY_UDP_MEDIALANv4 -i ${MEDIALAN} -m conntrack --ctstate NEW -p udp --dport 1194 -j LOG --log-prefix "lan_openvpn-v4-udp-access: "
#${IPT} -A MY_UDP_MEDIALANv4 -i ${MEDIALAN} -m conntrack --ctstate NEW -p udp --dport 1194 -j ACCEPT
#${IPT6} -A MY_UDP_MEDIALANv6 -i ${MEDIALAN} -m conntrack --ctstate NEW -p udp --dport 1194 -j LOG --log-prefix "lan_openvpn-v6-udp-access: "
#${IPT6} -A MY_UDP_MEDIALANv6 -i ${MEDIALAN} -m conntrack --ctstate NEW -p udp --dport 1194 -j ACCEPT
### log rest
#${IPT} -A MY_UDP_MEDIALANv4 -j LOG --log-prefix "forbidden from lan v4 udp: "
#${IPT6} -A MY_UDP_MEDIALANv6 -j LOG --log-prefix "forbidden from lan v6 udp: "
### drop rest
${IPT} -A MY_UDP_MEDIALANv4 -j DROP
${IPT6} -A MY_UDP_MEDIALANv6 -j DROP
###########################################################################################################################################################################################################
####################### nic for guests: GUESTW ######################
########################################################################
### MY_ICMP_GUESTW
### create MY_ICMP_GUESTW rules
${IPT} -N MY_ICMP_GUESTWv4
${IPT6} -N MY_ICMP_GUESTWv6
### GUESTW icmp traffic goes to MY_ICMP_GUESTW
${IPT} -A INPUT -i ${GUESTW} -p icmp -j MY_ICMP_GUESTWv4
${IPT6} -A INPUT -i ${GUESTW} -p icmpv6 -j MY_ICMP_GUESTWv6
#${IPT6} -A INPUT -i ${GUESTW} -p icmpv6 -j ACCEPT
${IPT} -A MY_ICMP_GUESTWv4 -p icmp --icmp-type destination-unreachable -m conntrack --ctstate RELATED -j ACCEPT
#${IPT} -A MY_ICMP_GUESTWv4 -p icmp --icmp-type fragmentation-needed -m conntrack --ctstate RELATED -j LOG --log-prefix "GUESTW_icmp-fragmentation-needed: "
${IPT} -A MY_ICMP_GUESTWv4 -p icmp --icmp-type fragmentation-needed -m conntrack --ctstate RELATED -j ACCEPT
${IPT} -A MY_ICMP_GUESTWv4 -p icmp --icmp-type parameter-problem -m conntrack --ctstate RELATED -j ACCEPT
${IPT} -A MY_ICMP_GUESTWv4 -p icmp --icmp-type echo-request -m limit --limit 10/sec -j ACCEPT
${IPT} -A MY_ICMP_GUESTWv4 -p icmp --icmp-type echo-request -m conntrack --ctstate NEW,ESTABLISHED,RELATED -j ACCEPT
#${IPT} -A MY_ICMP_GUESTWv4 -p icmp --icmp-type echo-reply -m conntrack --ctstate ESTABLISHED,RELATED -j LOG --log-prefix "GUESTW_icmp-echo-reply: "
${IPT} -A MY_ICMP_GUESTWv4 -p icmp --icmp-type echo-reply -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
### log rest
#${IPT} -A MY_ICMP_GUESTWv4 -j LOG --log-prefix "forbidden from kvms v4 icmp: "
### standard policy
${IPT} -A MY_ICMP_GUESTWv4 -j DROP
### MY_ICMP_GUESTWv6
${IPT6} -A MY_ICMP_GUESTWv6 -p icmpv6 --icmpv6-type destination-unreachable -m conntrack --ctstate RELATED -j ACCEPT
${IPT6} -A MY_ICMP_GUESTWv6 -p icmpv6 --icmpv6-type packet-too-big -m conntrack --ctstate RELATED -j ACCEPT
${IPT6} -A MY_ICMP_GUESTWv6 -p icmpv6 --icmpv6-type time-exceeded -m conntrack --ctstate RELATED -j ACCEPT
${IPT6} -A MY_ICMP_GUESTWv6 -p icmpv6 --icmpv6-type parameter-problem -m conntrack --ctstate RELATED -j ACCEPT
${IPT6} -A MY_ICMP_GUESTWv6 -p icmpv6 --icmpv6-type echo-request -m limit --limit 10/sec -j ACCEPT
${IPT6} -A MY_ICMP_GUESTWv6 -p icmpv6 --icmpv6-type echo-reply -j ACCEPT
### router advertisements
${IPT6} -A MY_ICMP_GUESTWv6 -i ${GUESTW} -p icmpv6 --icmpv6-type router-solicitation -j ACCEPT
${IPT6} -A MY_ICMP_GUESTWv6 -i ${GUESTW} -p icmpv6 --icmpv6-type router-advertisement -j ACCEPT
### router neighbor advertisements
${IPT6} -A MY_ICMP_GUESTWv6 -i ${GUESTW} -p icmpv6 --icmpv6-type neighbor-solicitation -j ACCEPT
${IPT6} -A MY_ICMP_GUESTWv6 -i ${GUESTW} -p icmpv6 --icmpv6-type neighbor-advertisement -j ACCEPT
### mobile-ipv6
#${IPT6} -A MY_ICMP_GUESTWv6 -p icmpv6 --icmpv6-type 144 -j ACCEPT
#${IPT6} -A MY_ICMP_GUESTWv6 -p icmpv6 --icmpv6-type 146 -j ACCEPT
### Inverse Neighbor Discovery
${IPT6} -A MY_ICMP_GUESTWv6 -p icmpv6 --icmpv6-type 141 -j ACCEPT
${IPT6} -A MY_ICMP_GUESTWv6 -p icmpv6 --icmpv6-type 142 -j ACCEPT
### Multicast groups + multicast listener
# ${IPT6} -A MY_ICMP_GUESTWv6 -p icmpv6 --icmpv6-type 130 -j ACCEPT
# ${IPT6} -A MY_ICMP_GUESTWv6 -p icmpv6 --icmpv6-type 131 -j ACCEPT
# ${IPT6} -A MY_ICMP_GUESTWv6 -p icmpv6 --icmpv6-type 132 -j ACCEPT
# ${IPT6} -A MY_ICMP_GUESTWv6 -p icmpv6 --icmpv6-type 143 -j ACCEPT
### Send - Certification Path Soli./Advert.
#${IPT6} -A MY_ICMP_GUESTWv6 -p icmpv6 --icmpv6-type 148 -j ACCEPT
#${IPT6} -A MY_ICMP_GUESTWv6 -p icmpv6 --icmpv6-type 149 -j ACCEPT
### multicast router
# ${IPT6} -A MY_ICMP_GUESTWv6 -p icmpv6 --icmpv6-type 151 -j ACCEPT
# ${IPT6} -A MY_ICMP_GUESTWv6 -p icmpv6 --icmpv6-type 152 -j ACCEPT
# ${IPT6} -A MY_ICMP_GUESTWv6 -p icmpv6 --icmpv6-type 153 -j ACCEPT
### log rest
#${IPT6} -A MY_ICMP_GUESTWv6 -j LOG --log-prefix "forbidden from kvms v6 icmp: "
### standard policy
${IPT6} -A MY_ICMP_GUESTWv6 -j DROP
#----------------------------------------------------------------------#
### MY_TCP_GUESTW
### create MY_TCP_GUESTW rules
${IPT} -N MY_TCP_GUESTWv4
${IPT6} -N MY_TCP_GUESTWv6
### GUESTW tcp traffic goes to MY_TCP_WORLD
${IPT} -A INPUT -i ${GUESTW} -p tcp -j MY_TCP_GUESTWv4
${IPT6} -A INPUT -i ${GUESTW} -p tcp -j MY_TCP_GUESTWv6
### drop stealth scans etc. ###
#### no flags
#${IPT} -A MY_TCP_GUESTWv4 -p tcp --tcp-flags ALL NONE -j DROP
#### SYN and FIN flags
#${IPT} -A MY_TCP_GUESTWv4 -p tcp --tcp-flags SYN,FIN SYN,FIN -j DROP
#### SYN and RST flags at the same time
#${IPT} -A MY_TCP_GUESTWv4 -p tcp --tcp-flags SYN,RST SYN,RST -j DROP
#### FIN and RST flags at the same time
#${IPT} -A MY_TCP_GUESTWv4 -p tcp --tcp-flags FIN,RST FIN,RST -j DROP
#### FIN but no ACK
#${IPT} -A MY_TCP_GUESTWv4 -p tcp --tcp-flags ACK,FIN FIN -j DROP
#### PSH but no ACK
#${IPT} -A MY_TCP_GUESTWv4 -p tcp --tcp-flags ACK,PSH PSH -j DROP
#### URG but no ACK
#${IPT} -A MY_TCP_GUESTWv4 -p tcp --tcp-flags ACK,URG URG -j DROP
### bla
${IPT} -A MY_TCP_GUESTWv4 -p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG -j DROP
### SSH
#${IPT} -A MY_TCP_GUESTWv4 -i ${GUESTW} -m conntrack --ctstate NEW -p tcp --dport 23235 -j LOG --log-prefix "kvms_ssh-v4-access: "
#${IPT} -A MY_TCP_GUESTWv4 -i ${GUESTW} -m conntrack --ctstate NEW -p tcp --dport 23235 -j ACCEPT
#${IPT6} -A MY_TCP_GUESTWv6 -i ${GUESTW} -m conntrack --ctstate NEW -p tcp --dport 23235 -j LOG --log-prefix "kvms_ssh-v6-access: "
#${IPT6} -A MY_TCP_GUESTWv6 -i ${GUESTW} -m conntrack --ctstate NEW -p tcp --dport 23235 -j ACCEPT
### DHCPD
#${IPT} -A MY_TCP_GUESTWv4 -i ${GUESTW} -m conntrack --ctstate NEW -p tcp --dport 67 -j LOG --log-prefix "kvms_dhcpd-67-v4-tcp-access: "
${IPT} -A MY_TCP_GUESTWv4 -i ${GUESTW} -m conntrack --ctstate NEW -p tcp --dport 67 -j ACCEPT
#${IPT6} -A MY_TCP_GUESTWv6 -i ${GUESTW} -m conntrack --ctstate NEW -p tcp --dport 547 -j LOG --log-prefix "kvms_dhcpd-v6-tcp-547-access: "
${IPT6} -A MY_TCP_GUESTWv6 -i ${GUESTW} -m conntrack --ctstate NEW -p tcp --dport 547 -j ACCEPT
### DNS
#${IPT} -A MY_TCP_GUESTWv4 -i ${GUESTW} -m conntrack --ctstate NEW -p tcp --dport 53 -j LOG --log-prefix "kvms_dns-v4-tcp-access: "
${IPT} -A MY_TCP_GUESTWv4 -i ${GUESTW} -m conntrack --ctstate NEW -p tcp --dport 53 -j ACCEPT
#${IPT6} -A MY_TCP_GUESTWv6 -i ${GUESTW} -m conntrack --ctstate NEW -p tcp --dport 53 -j LOG --log-prefix "kvms_dns-v6-tcp-access: "
${IPT6} -A MY_TCP_GUESTWv6 -i ${GUESTW} -m conntrack --ctstate NEW -p tcp --dport 53 -j ACCEPT
### NTP
#${IPT} -A MY_TCP_GUESTWv4 -i ${GUESTW} -m conntrack --ctstate NEW -p tcp --dport 123 -j LOG --log-prefix "kvms_ntp-v4-tcp-access: "
#${IPT} -A MY_TCP_GUESTWv4 -i ${GUESTW} -m conntrack --ctstate NEW -p tcp --dport 123 -j ACCEPT
#${IPT6} -A MY_TCP_GUESTWv6 -i ${GUESTW} -m conntrack --ctstate NEW -p tcp --dport 123 -j LOG --log-prefix "kvms_ntp-v6-tcp-access: "
#${IPT6} -A MY_TCP_GUESTWv6 -i ${GUESTW} -m conntrack --ctstate NEW -p tcp --dport 123 -j ACCEPT
### squid
#${IPT} -A MY_TCP_GUESTWv4 -i ${GUESTW} -m conntrack --ctstate NEW -p tcp --dport 3128 -j ACCEPT
#${IPT6} -A MY_TCP_GUESTWv6 -i ${GUESTW} -m conntrack --ctstate NEW -p tcp --dport 3128 -j ACCEPT
### TOR
#${IPT} -A MY_TCP_GUESTWv4 -i ${GUESTW} -m conntrack --ctstate NEW -p tcp --dport 9062 -j LOG --log-prefix "kvms_tor-v4-tcp-access: "
#${IPT} -A MY_TCP_GUESTWv4 -i ${GUESTW} -m conntrack --ctstate NEW -p tcp --dport 9062 -j ACCEPT
#${IPT6} -A MY_TCP_GUESTWv6 -i ${GUESTW} -m conntrack --ctstate NEW -p tcp --dport 9060 -j LOG --log-prefix "kvms_tor-v4-tcp-access: "
#${IPT6} -A MY_TCP_GUESTWv6 -i ${GUESTW} -m conntrack --ctstate NEW -p tcp --dport 9060 -j ACCEPT
### log rest
#${IPT} -A MY_TCP_GUESTWv4 -j LOG --log-prefix "forbidden from kvms v4 tcp: "
#${IPT6} -A MY_TCP_GUESTWv6 -j LOG --log-prefix "forbidden from kvms v6 tcp: "
### drop rest
${IPT} -A MY_TCP_GUESTWv4 -j DROP
${IPT6} -A MY_TCP_GUESTWv6 -j DROP
#-------------------------------------------------------------------------------------------------------------------#
### MY_UDP_GUESTW
### create MY_UDP_GUESTW rules
${IPT} -N MY_UDP_GUESTWv4
${IPT6} -N MY_UDP_GUESTWv6
### GUESTW UDP traffic goes to MY_UDP_GUESTW
${IPT} -A INPUT -i ${GUESTW} -p udp -j MY_UDP_GUESTWv4
${IPT6} -A INPUT -i ${GUESTW} -p udp -j MY_UDP_GUESTWv6
### DHCPD
#${IPT} -A MY_UDP_GUESTWv4 -i ${GUESTW} -m conntrack --ctstate NEW -p udp --dport 67 -j LOG --log-prefix "kvms_dhcpd-v4-67-udp-access: "
${IPT} -A MY_UDP_GUESTWv4 -i ${GUESTW} -m conntrack --ctstate NEW -p udp --dport 67 -j ACCEPT
### pxe
#${IPT} -A MY_UDP_GUESTWv4 -i ${GUESTW} -m conntrack --ctstate NEW -p udp --dport 69 -j ACCEPT
#${IPT6} -A MY_UDP_GUESTWv6 -i ${GUESTW} -m conntrack --ctstate NEW -p udp --dport 546 -j LOG --log-prefix "kvms_dhcpd-v6-udp-547-access: "
#${IPT6} -A MY_UDP_GUESTWv6 -i ${GUESTW} -m conntrack --ctstate NEW -p udp --dport 546 -j ACCEPT
#${IPT6} -A MY_UDP_GUESTWv6 -i ${GUESTW} -m conntrack --ctstate NEW -p udp --dport 547 -j LOG --log-prefix "kvms_dhcpd-v6-udp-547-access: "
${IPT6} -A MY_UDP_GUESTWv6 -i ${GUESTW} -m conntrack --ctstate NEW -p udp --dport 547 -j ACCEPT
### DNS
#${IPT} -A MY_UDP_GUESTWv4 -i ${GUESTW} -m conntrack --ctstate NEW -p udp --dport 53 -j LOG --log-prefix "kvms_dns-v4-udp-access: "
${IPT} -A MY_UDP_GUESTWv4 -i ${GUESTW} -m conntrack --ctstate NEW -p udp --dport 53 -j ACCEPT
#${IPT6} -A MY_UDP_GUESTWv6 -i ${GUESTW} -m conntrack --ctstate NEW -p udp --dport 53 -j LOG --log-prefix "kvms_dns-v6-udp-access: "
${IPT6} -A MY_UDP_GUESTWv6 -i ${GUESTW} -m conntrack --ctstate NEW -p udp --dport 53 -j ACCEPT
### NTP
#${IPT} -A MY_UDP_GUESTWv4 -i ${GUESTW} -m conntrack --ctstate NEW -p udp --dport 123 -j LOG --log-prefix "kvms_ntp-v4-udp-access: "
#${IPT} -A MY_UDP_GUESTWv4 -i ${GUESTW} -m conntrack --ctstate NEW -p udp --dport 123 -j ACCEPT
#${IPT6} -A MY_UDP_GUESTWv6 -i ${GUESTW} -m conntrack --ctstate NEW -p udp --dport 123 -j LOG --log-prefix "kvms_ntp-v6-udp-access: "
#${IPT6} -A MY_UDP_GUESTWv6 -i ${GUESTW} -m conntrack --ctstate NEW -p udp --dport 123 -j ACCEPT
### log rest
#${IPT} -A MY_UDP_GUESTWv4 -j LOG --log-prefix "forbidden from kvms v4 udp: "
#${IPT6} -A MY_UDP_GUESTWv6 -j LOG --log-prefix "forbidden from kvms v6 udp: "
### drop rest
${IPT} -A MY_UDP_GUESTWv4 -j DROP
${IPT6} -A MY_UDP_GUESTWv6 -j DROP
###########################################################################################################################################################################################################
######################### nic for IPv6: HE6 #########################
########################################################################
### MY_ICMP_HE6
### create MY_ICMP_HE6 rules
${IPT} -N MY_ICMP_HE6v4
${IPT6} -N MY_ICMP_HE6v6
### HE6 icmp traffic goes to MY_ICMP_HE6
${IPT} -A INPUT -i ${HE6} -p icmp -j MY_ICMP_HE6v4
${IPT6} -A INPUT -i ${HE6} -p icmpv6 -j MY_ICMP_HE6v6
${IPT} -A MY_ICMP_HE6v4 -p icmp --icmp-type destination-unreachable -m conntrack --ctstate RELATED -j ACCEPT
#${IPT} -A MY_ICMP_HE6v4 -p icmp --icmp-type fragmentation-needed -m conntrack --ctstate RELATED -j LOG --log-prefix "HE6_icmp-fragmentation-needed: "
${IPT} -A MY_ICMP_HE6v4 -p icmp --icmp-type fragmentation-needed -m conntrack --ctstate RELATED -j ACCEPT
${IPT} -A MY_ICMP_HE6v4 -p icmp --icmp-type parameter-problem -m conntrack --ctstate RELATED -j ACCEPT
${IPT} -A MY_ICMP_HE6v4 -p icmp --icmp-type echo-request -m limit --limit 10/sec -j ACCEPT
${IPT} -A MY_ICMP_HE6v4 -p icmp --icmp-type echo-request -m conntrack --ctstate NEW,ESTABLISHED,RELATED -j ACCEPT
#${IPT} -A MY_ICMP_HE6v4 -p icmp --icmp-type echo-reply -m conntrack --ctstate ESTABLISHED,RELATED -j LOG --log-prefix "HE6_icmp-echo-reply: "
${IPT} -A MY_ICMP_HE6v4 -p icmp --icmp-type echo-reply -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
### log rest
#${IPT} -A MY_ICMP_HE6v4 -j LOG --log-prefix "forbidden from HE6 v4 icmp: "
### standard policy
${IPT} -A MY_ICMP_HE6v4 -j DROP
### MY_ICMP_HE6v6
${IPT6} -A MY_ICMP_HE6v6 -p icmpv6 --icmpv6-type destination-unreachable -m conntrack --ctstate RELATED -j ACCEPT
${IPT6} -A MY_ICMP_HE6v6 -p icmpv6 --icmpv6-type packet-too-big -m conntrack --ctstate RELATED -j ACCEPT
${IPT6} -A MY_ICMP_HE6v6 -p icmpv6 --icmpv6-type time-exceeded -m conntrack --ctstate RELATED -j ACCEPT
${IPT6} -A MY_ICMP_HE6v6 -p icmpv6 --icmpv6-type parameter-problem -m conntrack --ctstate RELATED -j ACCEPT
${IPT6} -A MY_ICMP_HE6v6 -p icmpv6 --icmpv6-type echo-request -m limit --limit 10/sec -j ACCEPT
${IPT6} -A MY_ICMP_HE6v6 -p icmpv6 --icmpv6-type echo-reply -j ACCEPT
### router advertisements
${IPT6} -A MY_ICMP_HE6v6 -i ${HE6} -p icmpv6 --icmpv6-type router-solicitation -j ACCEPT
${IPT6} -A MY_ICMP_HE6v6 -i ${HE6} -p icmpv6 --icmpv6-type router-advertisement -j ACCEPT
### router neighbor advertisements
${IPT6} -A MY_ICMP_HE6v6 -i ${HE6} -p icmpv6 --icmpv6-type neighbor-solicitation -j ACCEPT
${IPT6} -A MY_ICMP_HE6v6 -i ${HE6} -p icmpv6 --icmpv6-type neighbor-advertisement -j ACCEPT
### mobile-ipv6
#${IPT6} -A MY_ICMP_HE6v6 -p icmpv6 --icmpv6-type 144 -j ACCEPT
#${IPT6} -A MY_ICMP_HE6v6 -p icmpv6 --icmpv6-type 146 -j ACCEPT
### Inverse Neighbor Discovery
${IPT6} -A MY_ICMP_HE6v6 -p icmpv6 --icmpv6-type 141 -j ACCEPT
${IPT6} -A MY_ICMP_HE6v6 -p icmpv6 --icmpv6-type 142 -j ACCEPT
### Multicast groups + multicast listener
${IPT6} -A MY_ICMP_HE6v6 -p icmpv6 --icmpv6-type 130 -j ACCEPT
${IPT6} -A MY_ICMP_HE6v6 -p icmpv6 --icmpv6-type 131 -j ACCEPT
${IPT6} -A MY_ICMP_HE6v6 -p icmpv6 --icmpv6-type 132 -j ACCEPT
${IPT6} -A MY_ICMP_HE6v6 -p icmpv6 --icmpv6-type 143 -j ACCEPT
### Send - Certification Path Soli./Advert.
#${IPT6} -A MY_ICMP_HE6v6 -p icmpv6 --icmpv6-type 148 -j ACCEPT
#${IPT6} -A MY_ICMP_HE6v6 -p icmpv6 --icmpv6-type 149 -j ACCEPT
### multicast router
${IPT6} -A MY_ICMP_HE6v6 -p icmpv6 --icmpv6-type 151 -j ACCEPT
${IPT6} -A MY_ICMP_HE6v6 -p icmpv6 --icmpv6-type 152 -j ACCEPT
${IPT6} -A MY_ICMP_HE6v6 -p icmpv6 --icmpv6-type 153 -j ACCEPT
### log rest
#${IPT6} -A MY_ICMP_HE6v6 -j LOG --log-prefix "forbidden from HE6 v6 icmp: "
### standard policy
${IPT6} -A MY_ICMP_HE6v6 -j DROP
#----------------------------------------------------------------------#
### MY_TCP_HE6
### create MY_TCP_HE6 rules
${IPT} -N MY_TCP_HE6v4
${IPT6} -N MY_TCP_HE6v6
### HE6 tcp traffic goes to MY_TCP_HE6
${IPT} -A INPUT -i ${HE6} -p tcp -j MY_TCP_HE6v4
${IPT6} -A INPUT -i ${HE6} -p tcp -j MY_TCP_HE6v6
### drop stealth scans etc. ###
#### no flags
#${IPT} -A MY_TCP_HE6v4 -p tcp --tcp-flags ALL NONE -j DROP
#### SYN and FIN flags
#${IPT} -A MY_TCP_HE6v4 -p tcp --tcp-flags SYN,FIN SYN,FIN -j DROP
#### SYN and RST flags at the same time
#${IPT} -A MY_TCP_HE6v4 -p tcp --tcp-flags SYN,RST SYN,RST -j DROP
#### FIN and RST flags at the same time
#${IPT} -A MY_TCP_HE6v4 -p tcp --tcp-flags FIN,RST FIN,RST -j DROP
#### FIN but no ACK
#${IPT} -A MY_TCP_HE6v4 -p tcp --tcp-flags ACK,FIN FIN -j DROP
#### PSH but no ACK
#${IPT} -A MY_TCP_HE6v4 -p tcp --tcp-flags ACK,PSH PSH -j DROP
#### URG but no ACK
#${IPT} -A MY_TCP_HE6v4 -p tcp --tcp-flags ACK,URG URG -j DROP
### bla
${IPT} -A MY_TCP_HE6v4 -p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG -j DROP
### proto 41
#${IPT} -A MY_TCP_HE6v4 -i ${HE6} -m conntrack --ctstate NEW -p tcp --dport 41 -j LOG --log-prefix "HE6_proto-41-v4-access: "
#${IPT} -A MY_TCP_HE6v4 -i ${HE6} -s ${TFFM} -m conntrack --ctstate NEW -p tcp --dport 41 -j ACCEPT
#${IPT6} -A MY_TCP_HE6v6 -i ${HE6} -m conntrack --ctstate NEW -p tcp --dport 41 -j LOG --log-prefix "HE6_proto-41-v6-access: "
#${IPT6} -A MY_TCP_HE6v6 -i ${HE6} -m conntrack --ctstate NEW -p tcp --dport 41 -j ACCEPT
### SSH
#${IPT} -A MY_TCP_HE6v4 -i ${HE6} -m conntrack --ctstate NEW -p tcp --dport 23235 -j LOG --log-prefix "HE6_ssh-v4-access: "
#${IPT} -A MY_TCP_HE6v4 -i ${HE6} -m conntrack --ctstate NEW -p tcp --dport 23235 -j ACCEPT
#${IPT6} -A MY_TCP_HE6v6 -i ${HE6} -m conntrack --ctstate NEW -p tcp --dport 23235 -j LOG --log-prefix "HE6_ssh-v6-access: "
${IPT6} -A MY_TCP_HE6v6 -i ${HE6} -m conntrack --ctstate NEW -p tcp --dport 23235 -j ACCEPT
### DNS
#${IPT6} -A MY_TCP_HE6v6 -i ${HE6} -m conntrack --ctstate NEW -p tcp --dport 53 -j LOG --log-prefix "HE6_dns-v6-tcpp-access: "
#${IPT6} -A MY_TCP_HE6v6 -i ${HE6} -m conntrack --ctstate NEW -p tcp --dport 53 -j ACCEPT
### DHCPv6 requests
#${IPT6} -A MY_TCP_HE6v6 -i ${HE6} -m conntrack --ctstate NEW -p tcp --dport 547 -j LOG --log-prefix "HE6_dhcpd-547-v6-tcp-access: "
#${IPT6} -A MY_TCP_HE6v6 -i ${HE6} -m conntrack --ctstate NEW -p tcp --dport 547 -j ACCEPT
### log rest
#${IPT} -A MY_TCP_HE6v4 -j LOG --log-prefix "forbidden from HE6 v4 tcp: "
#${IPT6} -A MY_TCP_HE6v6 -j LOG --log-prefix "forbidden from HE6 v6 tcp: "
### drop rest
${IPT} -A MY_TCP_HE6v4 -j DROP
${IPT6} -A MY_TCP_HE6v6 -j DROP
#----------------------------------------------------------------------#
### MY_UDP_HE6
### create MY_UDP_HE6 rules
${IPT} -N MY_UDP_HE6v4
${IPT6} -N MY_UDP_HE6v6
### HE6 tcp traffic goes to MY_TCP_HE6
${IPT} -A INPUT -i ${HE6} -p udp -j MY_UDP_HE6v4
${IPT6} -A INPUT -i ${HE6} -p udp -j MY_UDP_HE6v6
### OPENVPN_V2
#${IPT} -A MY_UDP_HE6v4 -i ${HE6} -m conntrack --ctstate NEW -p udp --dport 1194 -j LOG --log-prefix "HE6_openvpn-v4-udp-access: "
#${IPT} -A MY_UDP_HE6v4 -i ${HE6} -m conntrack --ctstate NEW -p udp --dport 1194 -j ACCEPT
#${IPT6} -A MY_UDP_HE6v6 -i ${HE6} -m conntrack --ctstate NEW -p udp --dport 1194 -j LOG --log-prefix "HE6_openvpn-v6-udp-access: "
#${IPT6} -A MY_UDP_HE6v6 -i ${HE6} -m conntrack --ctstate NEW -p udp --dport 1194 -j ACCEPT
### log rest
#${IPT} -A MY_UDP_HE6v4 -j LOG --log-prefix "forbidden from HE6 v4 udp: "
#${IPT6} -A MY_UDP_HE6v6 -j LOG --log-prefix "forbidden from HE6 v6 udp: "
### drop rest
${IPT} -A MY_UDP_HE6v4 -j DROP
${IPT6} -A MY_UDP_HE6v6 -j DROP
###########################################################################################################################################################################################################
######################### natting + forwarding #######################
########################################################################
############################# masquerading #############################
${IPT} -t nat -A POSTROUTING -o ${WORLD} -j MASQUERADE
#${IPT6} -t nat -A POSTROUTING -o ${HE6} -j MASQUERADE
${IPT6} -t nat -A POSTROUTING -o ${HE6} -j SNAT --to-source 2001:470:1f0a:3c::2
############################ destination nat ###########################