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fw.sh
executable file
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fw.sh
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#!/bin/bash
# [os install notes](https://github.com/devel0/knowledge/blob/master/linux/quick-and-dirty-server-install-notes.md)
#-------
# debug
#-------
#set -x
source /etc/environment
#
# !!! TODO: set to false
#
ACCEPTALL=false
ACCEPTOUTFWD=false
#
#
#
# CONSTANTS
#
#############################################################################
# core containers ( 172.18.0.0/16 )
ip_dns_fw='172.18.0.1'
ip_dns_srv='172.18.0.2'
# security manager ( 172.18.0.4/16 )
ip_sec_srv='172.18.0.6'
# system containers ( 172.19.0.0/16 )
ip_nginx_gw='172.19.0.1'
ip_nginx_srv='172.19.0.2'
ip_doc_gw='172.19.0.5'
ip_doc_srv='172.19.0.6'
ip_dc01_gw='172.19.0.9'
ip_dc01_srv='172.19.0.10'
ip_dc01_bcast='172.19.0.11'
ip_cloud_psql_gw='172.19.0.17'
ip_cloud_psql_srv='172.19.0.18'
ip_cloud_gw='172.19.0.21'
ip_cloud_srv='172.19.0.22'
ip_zimbra_gw='172.19.0.25'
ip_zimbra_srv='172.19.0.26'
ip_cloud_sync_gw='172.19.0.29'
ip_cloud_sync_srv='172.19.0.30'
ip_imapsync_gw='172.19.0.33'
ip_imapsync_srv='172.19.0.34'
# build network ( 172.20.0.0/16 )
#=============================
# INTERNET and SPECIAL IPs
#===========================
if_wan=enp3s0
if_lan=br0
ip_my_public='xxx.yyy.zzz.www'
ip_sat='www.xxx.ttt.xxx' # insert itadmin ip address here to enable ssh from remote only to their ip
ip_gw='192.168.1.1'
ip_wan='192.168.1.254'
ip_my='192.168.10.200' # dc
ip_my1='192.168.10.201' # nas
ip_my_alt='192.168.9.200'
bcast_my='192.168.10.255'
ip_switch='192.168.10.254'
ip_google_dns1='8.8.8.8'
ip_google_dns2='8.8.4.4'
ip_lo='127.0.0.1'
ip_multicast='255.255.255.255'
ip_multicast_ping='224.0.0.1'
ip_llmnr='224.0.0.252'
#============
# INTERFACES
#============
if_lo="lo"
# dns
if_dns=$(dk-if dns)
# security manager
if_sec=$(dk-if sec)
# system
if_nginx=$(dk-if nginx)
if_doc=$(dk-if doc)
if_dc01=$(dk-if dc01)
if_nas=$(dk-if nas)
if_cloud_psql=$(dk-if cloud_psql)
if_cloud_sync=$(dk-if cloud_sync)
if_cloud=$(dk-if cloud)
if_zimbra=$(dk-if zimbra)
if_imapsync=$(dk-if imapsync)
# build
if_build=$(dk-if build)
#==========
# NETWORKS
#==========
net_lan='192.168.10.0/24'
# system
net_dns='172.18.0.0/30'
net_sec='172.18.0.4/30'
# apps
net_nginx='172.19.0.0/30'
net_doc='172.19.0.4/30'
net_dc01='172.19.0.8/30'
net_nas='172.19.0.12/30'
net_cloud_psql='172.19.0.16/30'
net_cloud='172.19.0.20/30'
net_zimbra='172.19.0.24/30'
net_cloud_sync='172.19.0.30/30'
net_imapsync='172.19.0.34/30'
# build
net_build='172.20.0.0/16'
# general
iana_ephemeral_from=49152
iana_ephemeral_to=65535
net_priv_a='10.0.0.0/8'
net_priv_b='172.16.0.0/12'
net_priv_c='192.168.0.0/16'
net_priv_d='224.0.0.0/4'
net_priv_e='240.0.0.0/5'
net_lo='127.0.0.1/8'
net_dockers=$net_priv_b
net_privs=$net_priv_a,$net_priv_b,$net_priv_c,$net_priv_d,$net_priv_e,$net_lo
net_lan_and_dockers=$net_lan,$net_dockers
#==========
# SERVICES
#==========
# Active Directory Replication over Firewalls ( https://technet.microsoft.com/en-us/library/bb727063.aspx )
svc_ftp_data='20'
svc_ftp='21'
svc_ssh='22'
svc_telnet='23'
svc_smtp='25'
svc_winsrep='42'
svc_dns='53'
svc_bootps='67'
svc_bootpc='68'
svc_tftp='69'
svc_http='80'
svc_krb='88'
svc_ntp='123'
svc_rpcepmap='135'
svc_netbios_ns='137'
svc_netbios_dgm='138'
svc_netbios_ssn='139'
svc_ldap='389'
svc_https='443'
svc_samba='445'
svc_krbpwd='464'
svc_smtps='465'
svc_submission='587'
svc_ldaps='636'
svc_imaps='993'
svc_ovpn='1194'
svc_wins='1512'
svc_hasp='1947'
svc_ntopng='3000'
svc_proxy='3128'
svc_gcat='3268'
svc_gcat_ssl='3269'
svc_rdp='3389'
svc_webapi_5000='5000'
svc_iperf='5201'
svc_iperfs='5201:5210'
svc_psql='5432'
svc_hostmon='5355'
svc_git='9418'
svc_hkp='11371'
svc_mongo='27017'
svc_rpcdyn='1024:65535'
svc_alt10='50010'
svc_samba_all=$svc_netbios_ns,$svc_netbios_dgm,$svc_netbios_ssn,$svc_samba
#=======================
# general allowed zones
#=======================
if [ "$1" == "--only-constants" ]; then return; fi
echo "fw"
#
#
#
# FIREWALL POLICIES & CERT RENEWAL
#
#############################################################################
iptprocs=$(pidof iptables)
if [ "x$iptprocs" != "x" ]; then
echo "There are other processes using iptables at the moment:"
echo "$iptprocs = `ps -fp $iptprocs`"
exit 1
fi
#=====
# LOG
#=====
# log dropped packets if policy=DROP
log_input="true"
log_forward="true"
log_output="true"
#=====
# CERT RENEWAL [ not used in sws-fs01 ]
#=====
# enable follow when need to run /nas/security/ssl-certificate/renew.sh
if [ "$1" == "--renew-cert" ]; then
echo "RENEW CERT MODE"
export cert_renew_mode="true"
fi
#=======
# DEBUG
#=======
# warning: log many packets if enabled debug
debug_input="false"
debug_forward="false"
debug_output="false"
#==================
# DEFAULT POLICIES
#==================
policy_input="DROP"
policy_output="DROP"
policy_forward="DROP"
if $ACCEPTALL; then
policy_input="ACCEPT"
policy_output="ACCEPT"
policy_forward="ACCEPT"
fi
if $ACCEPTOUTFWD; then
policy_output="ACCEPT"
policy_forward="ACCEPT"
fi
#=================
# COMMAND ALIASES
#=================
cmd_ip="/sbin/ip"
cmd_ipt="/sbin/iptables -w 60"
cmd_sysctl="/sbin/sysctl -w"
cmd_ipset="/usr/sbin/ipset"
#
#
#
# FUNCTIONS
#
#############################################################################
comment=""
load_modules()
{
modprobe ip_conntrack_ftp
}
#-------------------------
# args: [ipset_tbl_name]*
create_ipset_tables()
#-------------------------
{
for i in $*; do
echo Creating ipset table [$i]
$cmd_ipset -N $i nethash >& /dev/null
done
}
#----------------
reset_iptables()
#----------------
{
echo Resetting iptables
# check if tables previously exists
iptables -L -n | grep OUTPUT-2 >&/dev/null
if [ "$?" == "0" ]; then
echo "--> FIREWALL MODIFICATION"
# delete jump to chain
$cmd_ipt -t filter -D INPUT -j BADPACKETS
$cmd_ipt -t filter -D INPUT -j INPUT-2
$cmd_ipt -t filter -D FORWARD -j FORWARD-2
$cmd_ipt -t filter -D OUTPUT -j OUTPUT-2
$cmd_ipt -t nat -D PREROUTING -j PREROUTING-2
$cmd_ipt -t nat -D POSTROUTING -j POSTROUTING-2
$cmd_ipt -t nat -D OUTPUT -j NAT-OUTPUT-2
# flush rules
$cmd_ipt -t filter -F BADPACKETS
$cmd_ipt -t filter -F INPUT-2
$cmd_ipt -t filter -F FORWARD-2
$cmd_ipt -t filter -F OUTPUT-2
$cmd_ipt -t nat -F PREROUTING-2
$cmd_ipt -t nat -F POSTROUTING-2
$cmd_ipt -t nat -F NAT-OUTPUT-2
# delete chain
$cmd_ipt -t filter -X BADPACKETS
$cmd_ipt -t filter -X INPUT-2
$cmd_ipt -t filter -X FORWARD-2
$cmd_ipt -t filter -X OUTPUT-2
$cmd_ipt -t nat -X PREROUTING-2
$cmd_ipt -t nat -X POSTROUTING-2
$cmd_ipt -t nat -X NAT-OUTPUT-2
else
echo "--> INITIAL FIREWALL"
fi
# create chains
$cmd_ipt -t filter -N BADPACKETS
$cmd_ipt -t filter -N INPUT-2
$cmd_ipt -t filter -N FORWARD-2
$cmd_ipt -t filter -N OUTPUT-2
$cmd_ipt -t nat -N PREROUTING-2
$cmd_ipt -t nat -N POSTROUTING-2
$cmd_ipt -t nat -N NAT-OUTPUT-2
# create jump to chain
$cmd_ipt -t filter -A INPUT -j BADPACKETS
$cmd_ipt -t filter -A INPUT -j INPUT-2
$cmd_ipt -t filter -A FORWARD -j FORWARD-2
$cmd_ipt -t filter -A OUTPUT -j OUTPUT-2
$cmd_ipt -t nat -A PREROUTING -j PREROUTING-2
$cmd_ipt -t nat -A POSTROUTING -j POSTROUTING-2
$cmd_ipt -t nat -A OUTPUT -j NAT-OUTPUT-2
}
#-----------------------
setup_network_devices()
#-----------------------
{
echo Setup network devices
$cmd_ip link set $if_lan up
$cmd_ip addr add $net_fw broadcast + dev $if_lan >& /dev/null
if [ "x$GATEWAY_IP" != "x" ]; then
$cmd_ip route add default via $ip_gw dev $if_inet >& /dev/null
fi
}
#-------------------------------
setup_kernel_level_protection()
#-------------------------------
{
echo Setup kernel level protection
# enable SYN flood protection
$cmd_sysctl net.ipv4.tcp_syncookies="1" >& /dev/null
# enable reverse path filter
$cmd_sysctl net.ipv4.conf.all.rp_filter="1" >& /dev/null
# protect about smurfs attack
$cmd_sysctl net.ipv4.icmp_echo_ignore_broadcasts="1" >& /dev/null
# disable icmp redirects
$cmd_sysctl net.ipv4.conf.all.accept_redirects="0" >& /dev/null
# allow secure icmp redirects
$cmd_sysctl net.ipv4.conf.all.secure_redirects="1" >& /dev/null
}
#-----------------------
set_iptables_policies()
#-----------------------
{
echo Setting iptable default policies
$cmd_ipt -P INPUT $policy_input
$cmd_ipt -P OUTPUT $policy_output
$cmd_ipt -P FORWARD $policy_forward
}
#.....
# arg : <table> <log name>
log()
#.....
{
$cmd_ipt -A $1 ${@:3} -j LOG --log-level info --log-prefix "${2} "
}
#..............
# args: <table> [<iptable-args>]*
accept()
#..............
{
if [ "x$comment" != "x" ]; then
$cmd_ipt -A $1 ${@:2} -m comment --comment "$comment" -j ACCEPT
comment=""
else
$cmd_ipt -A $1 ${@:2} -j ACCEPT
fi
}
#......
# args: <table> [<iptable-args>]*
drop()
#......
{
if [ "$comment" != "" ]; then
$cmd_ipt -A $1 -m comment --comment "$comment" ${@:2} -j DROP
comment=""
else
$cmd_ipt -A $1 ${@:2} -j DROP
fi
}
#....................
# args: <table> [<iptable-args>]*
accept_established()
#....................
{
accept $1 ${@:2} -m state --state ESTABLISHED,RELATED
}
#......
# args: <table> <chain-to-jump-to> [<iptable-args>]*
jump()
#......
{
$cmd_ipt -A $1 ${@:3} -j $2
}
#.........
# args: [<iptable-args>]*
pre_add()
#.........
{
if [ "x$comment" != "x" ]; then
$cmd_ipt -t nat -A PREROUTING-2 -m comment --comment "$comment" $*
comment=""
else
$cmd_ipt -t nat -A PREROUTING-2 $*
fi
}
#.........
# args: [<iptable-args>]*
post_add()
#.........
{
if [ "x$comment" != "x" ]; then
$cmd_ipt -t nat -A POSTROUTING-2 -m comment --comment "$comment" $*
comment=""
else
$cmd_ipt -t nat -A POSTROUTING-2 $*
fi
}
#.........
# args: [<iptable-args>]*
out_add()
#.........
{
if [ "x$comment" != "x" ]; then
$cmd_ipt -t nat -A NAT-OUTPUT-2 -m comment --comment "$comment" $*
comment=""
else
$cmd_ipt -t nat -A NAT-OUTPUT-2 $*
fi
}
#-------------------
enable_ip_forward()
#-------------------
{
# enable ip forward
$cmd_sysctl net.ipv4.ip_forward="1" >&/dev/null
}
#
#
#
# BAD PACKETS
#
#############################################################################
#------------------------
setup_badpackets()
#------------------------
{
echo Setup INPUT chain [base]
let dropidx=0
mydrop()
{
if [[ "$policy_input" == "DROP" && "$log_badpackets" == "true" ]]; then
log_and_drop $1 "DROP [bad idx=$dropidx]" ${@:2}
let dropidx=$dropidx+1
else
drop $*
fi
}
# check if bad packets coming from internet
comment="antispoof my ip pub"
mydrop BADPACKETS -p ALL -i $if_inet -s $ip_my_public
comment="antispoof net priv a"
mydrop BADPACKETS -p ALL -i $if_inet -s $net_priv_a
comment="antispoof net priv b"
mydrop BADPACKETS -p ALL -i $if_inet -s $net_priv_b
comment="antispoof net priv c"
mydrop BADPACKETS -p ALL -i $if_inet -s $net_priv_c
comment="antispoof net priv d"
mydrop BADPACKETS -p ALL -i $if_inet -s $net_priv_d
comment="antispoof net priv e"
mydrop BADPACKETS -p ALL -i $if_inet -s $net_priv_e
comment="antispoof broadcast"
mydrop BADPACKETS -p ALL -i $if_inet -s 10.255.255.255
comment="antispoof"
mydrop BADPACKETS -p ALL -i $if_inet -m state --state INVALID
comment="antispoof"
mydrop BADPACKETS -p tcp -i $if_inet ! --syn -m state --state NEW
comment="antispoof"
mydrop BADPACKETS -p tcp -i $if_inet --tcp-flags ALL NONE
comment="antispoof"
mydrop BADPACKETS -p tcp -i $if_inet --tcp-flags ALL ALL
comment="antispoof"
mydrop BADPACKETS -p tcp -i $if_inet --tcp-flags ALL FIN,URG,PSH
comment="antispoof"
mydrop BADPACKETS -p tcp -i $if_inet --tcp-flags SYN,RST SYN,RST
comment="antispoof"
mydrop BADPACKETS -p tcp -i $if_inet --tcp-flags SYN,FIN SYN,FIN
comment="antispoof"
mydrop BADPACKETS -p ICMP -i $if_inet --fragment
comment="antispoof"
mydrop BADPACKETS -p UDP -i $if_inet -s 0/0 --destination-port 137
comment="antispoof"
mydrop BADPACKETS -p UDP -i $if_inet -s 0/0 --destination-port 138
comment="antispoof"
mydrop BADPACKETS -i $if_inet -m pkttype --pkt-type broadcast
}
#
#
#
# PREROUTING
#
#############################################################################
setup_prerouting()
#------------------
{
echo Setup PREROUTING and NAT-OUTPUT
if [ "$cert_renew_mode" != "true" ]; then
comment="redirect WAN http(s),7071 to nginx docker"
pre_add -i $if_wan -d $ip_wan -p tcp -m multiport --dports $svc_http,$svc_https,7071 -j DNAT --to $ip_nginx_srv
comment="redirect lan http(s),7071 to nginx docker"
pre_add -i $if_lan -d $ip_my -p tcp -m multiport --dports $svc_http,$svc_https,7071 -j DNAT --to $ip_nginx_srv
else
echo "---> CERT RENEW MODE"
fi
#----------------
# adjust docker lan addressing
#----------------
comment="redirect doc to nginx"
pre_add -i $if_lan -d $ip_doc_srv -j DNAT --to $ip_nginx_srv
comment="redirect cloud to nginx"
pre_add -i $if_lan -d $ip_cloud_srv -j DNAT --to $ip_nginx_srv
comment="redirect http(s),7071 zimbra to nginx"
pre_add -i $if_lan -d $ip_zimbra_srv -p tcp -m multiport --dports $svc_http,$svc_https,7071 -j DNAT --to $ip_nginx_srv
comment="redirect http(s) cloud_sync to cloud to nginx"
pre_add -i $if_cloud_sync -o $if_cloud -s $ip_cloud_sync_srv -d $ip_cloud_srv -p tcp -m multiport --dports $svc_http,$svc_https -j DNAT --to $ip_nginx_srv
#-------------------------------
# domain controller
#-------------------------------
comment="redirect lan to dc (udp)"
pre_add -i $if_lan -s $net_lan -d $ip_my -p udp -m multiport --dports \
$svc_krb,$svc_netbios_ns,$svc_netbios_dgm,$svc_ldap,$svc_krbpwd,$svc_ntp \
-j DNAT --to $ip_dc01_srv
comment="redirect lan to dc (tcp)"
pre_add -i $if_lan -s $net_lan -d $ip_my -p tcp -m multiport --dports \
$svc_krb,$svc_rpcepmap,$svc_netbios_ssn,$svc_ldap,$svc_samba,$svc_krbpwd,$svc_ldaps,$svc_gcat,$svc_gcat_ssl,"$iana_ephemeral_from:$iana_ephemeral_to" \
-j DNAT --to $ip_dc01_srv
#------------
# cloud_sync
#------------
comment="lan cloud sync rdp"
pre_add -i $if_lan -d $ip_my -p tcp --dport $svc_rdp -j DNAT --to $ip_cloud_sync_srv
#--------------
# zimbra
#--------------
comment="WAN mail smtp,smtps,submission,imaps to zimbra"
pre_add -i $if_wan -d $ip_wan -p tcp -m multiport --dports $svc_smtp,$svc_smtps,$svc_submission,$svc_imaps -j DNAT --to $ip_zimbra_srv
}
#
#
#
# INPUT
#
#############################################################################
setup_input_chain()
#-------------------
{
echo Setup INPUT chain
if [ "$debug_input" == "true" ]; then
log INPUT-2 "dbg [inp]"
fi
comment="established input connections"
accept_established INPUT-2 -p ALL
comment="accept loopback interface"
accept INPUT-2 -i $if_lo
comment="accept ping"
accept INPUT-2 -p ICMP --icmp-type 8
comment="accept ping"
accept INPUT-2 -p ICMP --icmp-type 11
comment="accept bcast from lan"
accept INPUT-2 ! -i $if_wan -d $bcast_my
comment="accept lan multicast"
accept INPUT-2 ! -i $if_wan -d $ip_multicast
#--------------
# (explicitly droppped)
#--------------
comment="drop tftp to srv"
drop INPUT-2 -i $if_lan -d $ip_my -p udp --dport $svc_tftp
comment="drop WAN multicast"
drop INPUT-2 -i $if_wan -d $ip_multicast
comment="drop WAN multicast ping"
drop INPUT-2 -i $if_wan -d $ip_multicast_ping
comment="drop WAN bcast from"
drop INPUT-2 -i $if_wan -d 192.168.1.255
#-------------
# 1688
#-------------
comment="accept broadcast 1688"
accept INPUT-2 -i $if_lan -d 192.168.1.255 -p tcp --dport 1688
#-------------
# dhcp
#-------------
comment="allow go to dhcp bootps"
accept INPUT-2 ! -i $if_wan -d $ip_my -p udp --dport $svc_bootps
comment="allow multicast dhcp"
accept INPUT-2 ! -i $if_wan -d $ip_multicast -p udp --dport $svc_bootps
#-----------------------------
# domain controller
#-----------------------------
comment="allow dc docker go to bcast"
accept INPUT-2 -i $if_dc01 -s $ip_dc01_srv -d $ip_dc01_bcast
#-------------
# iperf test
#-------------
comment="allow iperf"
accept INPUT-2 -i $if_lan -d $ip_my -p tcp --dport $svc_iperfs
#--------------------
# nas
#--------------------
comment="allow ssh to nas"
accept INPUT-2 -d $ip_my1 -p tcp --dport 40000
comment="allow samba to nas (udp)"
accept INPUT-2 -d $ip_my1 -p udp -m multiport --dports $svc_rpcepmap,$svc_netbios_ns,$svc_netbios_dgm
comment="allow samba to nas (tcp)"
accept INPUT-2 -d $ip_my1 -p tcp -m multiport --dports $svc_rpcepmap,$svc_netbios_ns,$svc_netbios_ssn,$svc_samba,"$iana_ephemeral_from:$iana_ephemeral_to"
comment="allow samba bcast (udp)"
accept INPUT-2 -d $bcast_my -p udp -m multiport --dports $svc_netbios_ns,$svc_netbios_dgm
#---------------
# ssh
#---------------
comment="accept LAN ssh from"
accept INPUT-2 -i $if_lan -s $net_lan -d $ip_my -p tcp --dport $svc_ssh
comment="[TMP] accept WAN from itadmin"
accept INPUT-2 -i $if_wan -s $ip_sat -d $ip_wan
#---------------------
# comment="allow hostmon"
# accept INPUT-2 -p udp --dport $svc_hostmon
# comment="[TMP] vnc to srv"
# accept INPUT-2 -i $if_lan -p tcp --dport 5900
#---- -- -- --
if [ "$cert_renew_mode" == "true" ]; then
comment="CERT RENEW allow http(s)"
accept INPUT-2 -p tcp -m multiport --dports $svc_http,$svc_https
echo
fi
if [[ "$policy_input" == "DROP" && "$log_input" == "true" ]]; then
#
# wansilent=true : don't show connection tries from WAN
# wansilent=false : show connection tries from WAN
#
# ( in any case WAN connections defauls to dropped policy )
#
wansilent=true
if $wansilent; then
# silently drop logging of unwanted wan input traffic
log INPUT-2 "DROP [inp]" -s $net_privs
else
log INPUT-2 "DROP [inp]"
fi
fi
}
#
#
#
# FORWARD
#
#############################################################################
setup_forward_chain()
#---------------------
{
echo Setup FORWARD chain
if [ "$debug_forward" == "true" ]; then
log FORWARD-2 "dbg [fwd]"
fi
comment="established forward connections"
accept_established FORWARD-2 -p ALL
#--------------
# (explicitly droppped)
#--------------
#------------
# build
#------------
comment="build network output"
accept FORWARD-2 -i $if_build -s $net_build
#-----------------
# ntp
#-----------------
comment="allow ntp (udp)"
accept FORWARD-2 -p udp --dport $svc_ntp
comment="allow ntp (tcp)"
accept FORWARD-2 -p tcp --dport $svc_ntp
#-------------
# dns
#-------------
comment="allow fwd dns (udp)"
accept FORWARD-2 -p udp --dport $svc_dns
comment="allow fwd dns (tcp)"
accept FORWARD-2 -p tcp --dport $svc_dns
#------------------------
# domain controller
#------------------------
comment="allow dc from net lan,docker (udp)"
accept FORWARD-2 -o $if_dc01 -s $net_lan_and_dockers -d $ip_dc01_srv -p udp -m multiport --dports \
$svc_dns,$svc_krb,$svc_netbios_ns,$svc_netbios_dgm,$svc_ldap,$svc_krbpwd
comment="allow dc from net lan,docker (tcp)"
accept FORWARD-2 -o $if_dc01 -s $net_lan_and_dockers -d $ip_dc01_srv -p tcp -m multiport --dports \
$svc_dns,$svc_krb,$svc_rpcepmap,$svc_netbios_ssn,$svc_ldap,$svc_samba,$svc_krbpwd,$svc_ldaps,$svc_gcat,$svc_gcat_ssl,"$iana_ephemeral_from:$iana_ephemeral_to"
#---------------
# nginx
#----------------
comment="allow LAN,WAN go to nginx http(s),smtps,submission,imaps"
accept FORWARD-2 -o $if_nginx -d $ip_nginx_srv -p tcp -m multiport --dports $svc_http,$svc_https,$svc_smtps,$svc_submission,$svc_imaps
comment="allow LAN,WAN go to nginx 7071 when from lan,itadmin"
accept FORWARD-2 -o $if_nginx -s $net_lan,$ip_sat -d $ip_nginx_srv -p tcp --dport 7071
comment="allow nginx go to doc 8080"
accept FORWARD-2 -i $if_nginx -o $if_doc -s $ip_nginx_srv -d $ip_doc_srv -p tcp --dport 8080
comment="allow nginx go to cloud"
accept FORWARD-2 -i $if_nginx -o $if_cloud -s $ip_nginx_srv -d $ip_cloud_srv -p tcp --dport $svc_http
comment="allow nginx go to zimbra http(s),smtps,submission,imaps,7071"
accept FORWARD-2 -i $if_nginx -o $if_zimbra -s $ip_nginx_srv -d $ip_zimbra_srv -p tcp -m multiport --dports $svc_http,$svc_https,$svc_smtps,$svc_submission,$svc_imaps,7071
#--------------------
# cloud
#--------------------
comment="allow cloud go to cloud_psql"
accept FORWARD-2 -i $if_cloud -o $if_cloud_psql -s $ip_cloud_srv -d $ip_cloud_psql_srv -p tcp --dport $svc_psql
comment="allow cloud go to http(s)"
accept FORWARD-2 -i $if_cloud -s $ip_cloud_srv -p tcp -m multiport --dports $svc_http,$svc_https
comment="allow cloud go to dc01 ldaps"
accept FORWARD-2 -i $if_cloud -o $if_dc01 -s $ip_cloud_srv -d $ip_dc01_srv -p tcp --dport $svc_ldaps
#---------------
# cloud_sync
#---------------
comment="allow cloud sync rdp"
accept FORWARD-2 -o $if_cloud_sync -d $ip_cloud_sync_srv -p tcp --dport $svc_rdp
comment="allow cloud sync go to http(s)"
accept FORWARD-2 -i $if_cloud_sync -s $ip_cloud_sync_srv -p tcp -m multiport --dports $svc_http,$svc_https
#--------------------------------
# zimbra
#--------------------------------
comment="allow zimbra exit to http(s),hkp,smtp"
accept FORWARD-2 -i $if_zimbra -s $ip_zimbra_srv -p tcp -m multiport --dports $svc_http,$svc_https,$svc_hkp,$svc_smtp
comment="allow go to zimbra"
accept FORWARD-2 -o $if_zimbra -d $ip_zimbra_srv -p tcp -m multiport --dports $svc_smtp,$svc_smtps,$svc_submission,$svc_imaps,7071
#----------------
# imapsync
#----------------
comment="allow imapsync out to imaps"
accept FORWARD-2 -i $if_imapsync -s $ip_imapsync_srv -p tcp --dport $svc_imaps
#-----------
# (gateway)
#-----------
comment="drop lan to inet SMTP (prevent SPAM from internal)"
drop FORWARD-2 -i $if_lan -o $if_wan -s $net_lan -p tcp --dport $svc_smtp
log FORWARD-2 "GATEWAY---" -i $if_lan -o $if_wan -s $net_lan -d $ip_gw
comment="forward lan to inet"
accept FORWARD-2 -i $if_lan -o $if_wan -s $net_lan
#--------------
# sec
#--------------
comment="http nginx -> sec (80,5000)"
accept FORWARD-2 -i $if_nginx -o $if_sec -s $ip_nginx_srv -d $ip_sec_srv -p tcp -m multiport --dports $svc_http,5000
comment="dns from sec0 to dns (udp)"
accept FORWARD-2 -i $if_sec -o $if_dns -s $ip_sec_srv -d $ip_dns_srv -p udp --dport $svc_dns
comment="http(s) from sec"
accept FORWARD-2 -i $if_sec -s $ip_sec_srv -p tcp -m multiport --dports $svc_http,$svc_https
#--------------
# [TMP]
#--------------
comment="allow rdp from itadmin"
accept FORWARD-2 -i $if_wan -o $if_lan -s $ip_sat -p tcp --dport $svc_rdp
if [[ "$policy_forward" == "DROP" && "$log_forward" == "true" ]]; then
log FORWARD-2 "DROP [fwd]"
fi
}
#
#
#
# OUTPUT
#
#############################################################################
setup_output_chain()
#--------------------
{
echo Setup OUTPUT chain
if [ "$debug_output" == "true" ]; then
log OUTPUT-2 "dbg [out]"
fi
comment="established output connections"
accept_established OUTPUT-2 -p ALL
comment="allow out to loopback iface"
accept OUTPUT-2 -o $if_lo
#---------------
# dhcp
#---------------
comment="allow out to dhcp client"
accept OUTPUT-2 -o $if_lan -s $ip_my -p udp --dport $svc_bootpc
#--------------
# dns
#--------------
comment="allow dns (udp)"