WebSVN – ALCASAR – Diff – /scripts/alcasar-iptables.sh



#!/bin/bash
# $Id: alcasar-iptables.sh 3193 2024-04-21 22:33:19Z rexy $
# Script de mise en place des regles du parefeu d'Alcasar (mode normal)
# This script writes the netfilter rules for ALCASAR
# Rexy - 3abtux - CPN
#
# Reminders

SSH_WAN_ADMIN_FROM=$([ "$SSH_WAN_ADMIN_FROM" == "0.0.0.0" ] && echo "0.0.0.0/0" || echo "$SSH_WAN_ADMIN_FROM" )
SSH_LAN_ADMIN_FROM=`grep ^SSH_ADMIN_FROM= $CONF_FILE|cut -d"=" -f2|cut -d"/" -f1`
SSH_LAN_ADMIN_FROM=${SSH_LAN_ADMIN_FROM:="0.0.0.0"}
SSH_LAN_ADMIN_FROM=$([ "$SSH_LAN_ADMIN_FROM" == "0.0.0.0" ] && echo "$PRIVATE_NETWORK_MASK" || echo "$SSH_LAN_ADMIN_FROM" )
IPTABLES="/sbin/iptables"
REHABILITED_IP="/etc/e2guardian/lists/group1/exceptioniplist"
ALLOWED_SITES="/usr/local/etc/alcasar-site-direct"			# WEB Sites allowed for all (no av and no filtering for av_bl users)
MULTIWAN=`grep ^MULTIWAN $CONF_FILE|cut -d"=" -f2`
PROXY=`grep ^PROXY= $CONF_FILE|cut -d"=" -f2`
PROXY_IP=`grep ^PROXY_IP= $CONF_FILE|cut -d"=" -f2`
nb_gw=`grep ^WAN $CONF_FILE|wc -l`

# Marquage (et journalisation) des paquets qui tentent d'accéder directement aux ports d'écoute du proxy HTTP/HTTPS (E2Guardian) pour pouvoir les rejeter en INPUT
# Mark (and log) the direct attempts to E2guardian listen ports in order to REJECT them in INPUT rules
# 8080 = ipset av_bl
$IPTABLES -A PREROUTING -t nat -i $TUNIF -p tcp -d $PRIVATE_IP -m tcp --dport 8080 -j NFLOG --nflog-group 1 --nflog-prefix "RULE direct-proxy -- DENY "
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp -m tcp --dport 8080 -j MARK --set-mark 1
# 8081 = ipset av_wl + av (to be redefine)
$IPTABLES -A PREROUTING -t nat -i $TUNIF -p tcp -d $PRIVATE_IP -m tcp --dport 8081 -j NFLOG --nflog-group 1 --nflog-prefix "RULE direct-proxy -- DENY "
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp -m tcp --dport 8081 -j MARK --set-mark 2
# 8443 = tranparent HTTPS for ipsets av_bl + av_wl + av (future version)
#$IPTABLES -A PREROUTING -t nat -i $TUNIF -p tcp -d $PRIVATE_IP -m tcp --dport 8443 -j NFLOG --nflog-group 1 --nflog-prefix "RULE direct-proxy -- DENY "
#$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp -m tcp --dport 8443 -j MARK --set-mark 6
 
# Marquage des paquets qui tentent d'accéder directement aux ports d'écoute DNS (UNBOUND) pour pouvoir les rejeter en INPUT

# Redirection des requêtes HTTP des usagers "av_bl + av_wl + av" vers E2guardian
# Redirect outbound "av_bl + av_wl +av" users HTTP requests to E2guardian
# 8080 = ipset av_bl
#$IPTABLES -A PREROUTING -t mangle -i $TUNIF -m set --match-set av_bl src -m set ! --match-set site_direct dst ! -d $PRIVATE_IP  -p tcp --dport http -j MARK --set-mark 200
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_bl src -m set ! --match-set site_direct dst ! -d $PRIVATE_IP  -p tcp --dport http -j REDIRECT --to-port 8080
# 8081 = ipset av_wl & av
#$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_wl src ! -d $PRIVATE_IP -p tcp --dport http -j REDIRECT --to-port 8081
#$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av src ! -d $PRIVATE_IP -p tcp --dport http -j REDIRECT --to-port 8081
 
# Redirection des requêtes HTTPS sortantes des usagers av_bl + av_wl + av vers E2Guardian (in a future version - don't forget to set E2guardian as a tranparent HTTPS proxy)
# Redirect outbound HTTPS requests of av_bl + av_wl + av users to E2Guardian
#$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_bl src -m set ! --match-set site_direct dst ! -d $PRIVATE_IP  -p tcp --dport https -j REDIRECT --to-port 8443
#$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_wl src -m set ! --match-set site_direct dst ! -d $PRIVATE_IP  -p tcp --dport https -j REDIRECT --to-port 8443

$IPTABLES -A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
 
# On interdit les connexions directes aux ports d'écoute d'E2Guardian. Les packets concernés ont été marqués et loggués dans la table mangle (PREROUTING)
# Deny direct connections on E2Guardian listen ports. The concerned paquets have been marked and logged in mangle table (PREROUTING)
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 8080 -m mark --mark 1 -j REJECT --reject-with tcp-reset # av_bl
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 8081 -m mark --mark 2 -j REJECT --reject-with tcp-reset # av_wl + av
#$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 8443 -m mark --mark 6 -j REJECT --reject-with tcp-reset # av_bl + av_wl + av (future version)
 
# On autorise les connexions HTTP/HTTPS légitimes vers E2Guardian
# Allow HTTP connections to E2Guardian
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport 8080 -m conntrack --ctstate NEW --syn -j ACCEPT
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport 8081 -m conntrack --ctstate NEW --syn -j ACCEPT
#$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport 8443 -m conntrack --ctstate NEW --syn -j ACCEPT # (future version)
 
# On interdit les connexions directes aux ports d'écoupe DNS (UNBOUND). Les packets concernés ont été marqués dans la table mangle (PREROUTING)
# Deny direct connections to DNS ports (UNBOUND). The concerned paquets are marked in mangle table (PREROUTING)
$IPTABLES -A INPUT -i $TUNIF -p udp --dport 54 -m mark --mark 3 -j REJECT --reject-with icmp-port-unreachable

Subversion Repositories ALCASAR

(root)/scripts/alcasar-iptables.sh @ 2519 – Rev 3190 → 3193

Rev 3190		Rev 3193
Line 1...		Line 1...
1	`#!/bin/bash`	1	`#!/bin/bash`
2	`# $Id: alcasar-iptables.sh 3190 2024-04-07 22:35:03Z rexy $`	2	`# $Id: alcasar-iptables.sh 3193 2024-04-21 22:33:19Z rexy $`
3	`# Script de mise en place des regles du parefeu d'Alcasar (mode normal)`	3	`# Script de mise en place des regles du parefeu d'Alcasar (mode normal)`
4	`# This script writes the netfilter rules for ALCASAR`	4	`# This script writes the netfilter rules for ALCASAR`
5	`# Rexy - 3abtux - CPN`	5	`# Rexy - 3abtux - CPN`
6	`#`	6	`#`
7	`# Reminders`	7	`# Reminders`
Line 51...		Line 51...
51	`SSH_WAN_ADMIN_FROM=$([ "$SSH_WAN_ADMIN_FROM" == "0.0.0.0" ] && echo "0.0.0.0/0" \|\| echo "$SSH_WAN_ADMIN_FROM" )`	51	`SSH_WAN_ADMIN_FROM=$([ "$SSH_WAN_ADMIN_FROM" == "0.0.0.0" ] && echo "0.0.0.0/0" \|\| echo "$SSH_WAN_ADMIN_FROM" )`
52	SSH_LAN_ADMIN_FROM=`grep ^SSH_ADMIN_FROM= $CONF_FILE\|cut -d"=" -f2\|cut -d"/" -f1`	52	SSH_LAN_ADMIN_FROM=`grep ^SSH_ADMIN_FROM= $CONF_FILE\|cut -d"=" -f2\|cut -d"/" -f1`
53	`SSH_LAN_ADMIN_FROM=${SSH_LAN_ADMIN_FROM:="0.0.0.0"}`	53	`SSH_LAN_ADMIN_FROM=${SSH_LAN_ADMIN_FROM:="0.0.0.0"}`
54	`SSH_LAN_ADMIN_FROM=$([ "$SSH_LAN_ADMIN_FROM" == "0.0.0.0" ] && echo "$PRIVATE_NETWORK_MASK" \|\| echo "$SSH_LAN_ADMIN_FROM" )`	54	`SSH_LAN_ADMIN_FROM=$([ "$SSH_LAN_ADMIN_FROM" == "0.0.0.0" ] && echo "$PRIVATE_NETWORK_MASK" \|\| echo "$SSH_LAN_ADMIN_FROM" )`
55	`IPTABLES="/sbin/iptables"`	55	`IPTABLES="/sbin/iptables"`
56	`REHABILITED_IP="/etc/e2guardian/lists/exceptioniplist"`	56	`REHABILITED_IP="/etc/e2guardian/lists/group1/exceptioniplist"`
57	`ALLOWED_SITES="/usr/local/etc/alcasar-site-direct" # WEB Sites allowed for all (no av and no filtering for av_bl users)`	57	`ALLOWED_SITES="/usr/local/etc/alcasar-site-direct" # WEB Sites allowed for all (no av and no filtering for av_bl users)`
58	MULTIWAN=`grep ^MULTIWAN $CONF_FILE\|cut -d"=" -f2`	58	MULTIWAN=`grep ^MULTIWAN $CONF_FILE\|cut -d"=" -f2`
59	PROXY=`grep ^PROXY= $CONF_FILE\|cut -d"=" -f2`	59	PROXY=`grep ^PROXY= $CONF_FILE\|cut -d"=" -f2`
60	PROXY_IP=`grep ^PROXY_IP= $CONF_FILE\|cut -d"=" -f2`	60	PROXY_IP=`grep ^PROXY_IP= $CONF_FILE\|cut -d"=" -f2`
61	nb_gw=`grep ^WAN $CONF_FILE\|wc -l`	61	nb_gw=`grep ^WAN $CONF_FILE\|wc -l`
Line 229...		Line 229...
229	`# Marquage (et journalisation) des paquets qui tentent d'accéder directement aux ports d'écoute du proxy HTTP/HTTPS (E2Guardian) pour pouvoir les rejeter en INPUT`	229	`# Marquage (et journalisation) des paquets qui tentent d'accéder directement aux ports d'écoute du proxy HTTP/HTTPS (E2Guardian) pour pouvoir les rejeter en INPUT`
230	`# Mark (and log) the direct attempts to E2guardian listen ports in order to REJECT them in INPUT rules`	230	`# Mark (and log) the direct attempts to E2guardian listen ports in order to REJECT them in INPUT rules`
231	`# 8080 = ipset av_bl`	231	`# 8080 = ipset av_bl`
232	`$IPTABLES -A PREROUTING -t nat -i $TUNIF -p tcp -d $PRIVATE_IP -m tcp --dport 8080 -j NFLOG --nflog-group 1 --nflog-prefix "RULE direct-proxy -- DENY "`	232	`$IPTABLES -A PREROUTING -t nat -i $TUNIF -p tcp -d $PRIVATE_IP -m tcp --dport 8080 -j NFLOG --nflog-group 1 --nflog-prefix "RULE direct-proxy -- DENY "`
233	`$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp -m tcp --dport 8080 -j MARK --set-mark 1`	233	`$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp -m tcp --dport 8080 -j MARK --set-mark 1`
234	`# 8090 = ipset av_wl + av`	234	`# 8081 = ipset av_wl + av (to be redefine)`
235	`$IPTABLES -A PREROUTING -t nat -i $TUNIF -p tcp -d $PRIVATE_IP -m tcp --dport 8090 -j NFLOG --nflog-group 1 --nflog-prefix "RULE direct-proxy -- DENY "`	235	`$IPTABLES -A PREROUTING -t nat -i $TUNIF -p tcp -d $PRIVATE_IP -m tcp --dport 8081 -j NFLOG --nflog-group 1 --nflog-prefix "RULE direct-proxy -- DENY "`
236	`$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp -m tcp --dport 8090 -j MARK --set-mark 2`	236	`$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp -m tcp --dport 8081 -j MARK --set-mark 2`
237	`# 8443 = tranparent HTTPS for ipsets av_bl + av_wl + av (future version)`	237	`# 8443 = tranparent HTTPS for ipsets av_bl + av_wl + av (future version)`
238	`#$IPTABLES -A PREROUTING -t nat -i $TUNIF -p tcp -d $PRIVATE_IP -m tcp --dport 8443 -j NFLOG --nflog-group 1 --nflog-prefix "RULE direct-proxy -- DENY "`	238	`#$IPTABLES -A PREROUTING -t nat -i $TUNIF -p tcp -d $PRIVATE_IP -m tcp --dport 8443 -j NFLOG --nflog-group 1 --nflog-prefix "RULE direct-proxy -- DENY "`
239	`#$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp -m tcp --dport 8443 -j MARK --set-mark 6`	239	`#$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp -m tcp --dport 8443 -j MARK --set-mark 6`
240		240
241	`# Marquage des paquets qui tentent d'accéder directement aux ports d'écoute DNS (UNBOUND) pour pouvoir les rejeter en INPUT`	241	`# Marquage des paquets qui tentent d'accéder directement aux ports d'écoute DNS (UNBOUND) pour pouvoir les rejeter en INPUT`
Line 279...		Line 279...
279	`# Redirection des requêtes HTTP des usagers "av_bl + av_wl + av" vers E2guardian`	279	`# Redirection des requêtes HTTP des usagers "av_bl + av_wl + av" vers E2guardian`
280	`# Redirect outbound "av_bl + av_wl +av" users HTTP requests to E2guardian`	280	`# Redirect outbound "av_bl + av_wl +av" users HTTP requests to E2guardian`
281	`# 8080 = ipset av_bl`	281	`# 8080 = ipset av_bl`
282	`#$IPTABLES -A PREROUTING -t mangle -i $TUNIF -m set --match-set av_bl src -m set ! --match-set site_direct dst ! -d $PRIVATE_IP -p tcp --dport http -j MARK --set-mark 200`	282	`#$IPTABLES -A PREROUTING -t mangle -i $TUNIF -m set --match-set av_bl src -m set ! --match-set site_direct dst ! -d $PRIVATE_IP -p tcp --dport http -j MARK --set-mark 200`
283	`$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_bl src -m set ! --match-set site_direct dst ! -d $PRIVATE_IP -p tcp --dport http -j REDIRECT --to-port 8080`	283	`$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_bl src -m set ! --match-set site_direct dst ! -d $PRIVATE_IP -p tcp --dport http -j REDIRECT --to-port 8080`
284	`# 8090 = ipset av_wl & av`	284	`# 8081 = ipset av_wl & av`
285	`#$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_wl src ! -d $PRIVATE_IP -p tcp --dport http -j REDIRECT --to-port 8090`	285	`#$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_wl src ! -d $PRIVATE_IP -p tcp --dport http -j REDIRECT --to-port 8081`
286	`#$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av src ! -d $PRIVATE_IP -p tcp --dport http -j REDIRECT --to-port 8090`	286	`#$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av src ! -d $PRIVATE_IP -p tcp --dport http -j REDIRECT --to-port 8081`
287		287
288	`# Redirection des requêtes HTTPS sortantes des usagers av_bl + av_wl + av vers E2Guardian (in a future version - don't forget to set E2guardian as a tranparent HTTPS proxy)`	288	`# Redirection des requêtes HTTPS sortantes des usagers av_bl + av_wl + av vers E2Guardian (in a future version - don't forget to set E2guardian as a tranparent HTTPS proxy)`
289	`# Redirect outbound HTTPS requests of av_bl + av_wl + av users to E2Guardian`	289	`# Redirect outbound HTTPS requests of av_bl + av_wl + av users to E2Guardian`
290	`#$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_bl src -m set ! --match-set site_direct dst ! -d $PRIVATE_IP -p tcp --dport https -j REDIRECT --to-port 8443`	290	`#$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_bl src -m set ! --match-set site_direct dst ! -d $PRIVATE_IP -p tcp --dport https -j REDIRECT --to-port 8443`
291	`#$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_wl src -m set ! --match-set site_direct dst ! -d $PRIVATE_IP -p tcp --dport https -j REDIRECT --to-port 8443`	291	`#$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_wl src -m set ! --match-set site_direct dst ! -d $PRIVATE_IP -p tcp --dport https -j REDIRECT --to-port 8443`
Line 344...		Line 344...
344	`$IPTABLES -A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT`	344	`$IPTABLES -A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT`
345		345
346	`# On interdit les connexions directes aux ports d'écoute d'E2Guardian. Les packets concernés ont été marqués et loggués dans la table mangle (PREROUTING)`	346	`# On interdit les connexions directes aux ports d'écoute d'E2Guardian. Les packets concernés ont été marqués et loggués dans la table mangle (PREROUTING)`
347	`# Deny direct connections on E2Guardian listen ports. The concerned paquets have been marked and logged in mangle table (PREROUTING)`	347	`# Deny direct connections on E2Guardian listen ports. The concerned paquets have been marked and logged in mangle table (PREROUTING)`
348	`$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 8080 -m mark --mark 1 -j REJECT --reject-with tcp-reset # av_bl`	348	`$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 8080 -m mark --mark 1 -j REJECT --reject-with tcp-reset # av_bl`
349	`$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 8090 -m mark --mark 2 -j REJECT --reject-with tcp-reset # av_wl + av`	349	`$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 8081 -m mark --mark 2 -j REJECT --reject-with tcp-reset # av_wl + av`
350	`#$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 8443 -m mark --mark 6 -j REJECT --reject-with tcp-reset # av_bl + av_wl + av (future version)`	350	`#$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 8443 -m mark --mark 6 -j REJECT --reject-with tcp-reset # av_bl + av_wl + av (future version)`
351		351
352	`# On autorise les connexions HTTP/HTTPS légitimes vers E2Guardian`	352	`# On autorise les connexions HTTP/HTTPS légitimes vers E2Guardian`
353	`# Allow HTTP connections to E2Guardian`	353	`# Allow HTTP connections to E2Guardian`
354	`$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport 8080 -m conntrack --ctstate NEW --syn -j ACCEPT`	354	`$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport 8080 -m conntrack --ctstate NEW --syn -j ACCEPT`
355	`$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport 8090 -m conntrack --ctstate NEW --syn -j ACCEPT`	355	`$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport 8081 -m conntrack --ctstate NEW --syn -j ACCEPT`
356	`#$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport 8443 -m conntrack --ctstate NEW --syn -j ACCEPT # (future version)`	356	`#$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport 8443 -m conntrack --ctstate NEW --syn -j ACCEPT # (future version)`
357		357
358	`# On interdit les connexions directes aux ports d'écoupe DNS (UNBOUND). Les packets concernés ont été marqués dans la table mangle (PREROUTING)`	358	`# On interdit les connexions directes aux ports d'écoupe DNS (UNBOUND). Les packets concernés ont été marqués dans la table mangle (PREROUTING)`
359	`# Deny direct connections to DNS ports (UNBOUND). The concerned paquets are marked in mangle table (PREROUTING)`	359	`# Deny direct connections to DNS ports (UNBOUND). The concerned paquets are marked in mangle table (PREROUTING)`
360	`$IPTABLES -A INPUT -i $TUNIF -p udp --dport 54 -m mark --mark 3 -j REJECT --reject-with icmp-port-unreachable`	360	`$IPTABLES -A INPUT -i $TUNIF -p udp --dport 54 -m mark --mark 3 -j REJECT --reject-with icmp-port-unreachable`