From fb527b11076db8dd72e51e8643612efbb8ce1aac Mon Sep 17 00:00:00 2001
From: Silvino Silva For more information about iptables read
arch wiki.
You can use
- iptables script
- at boot time and iptables-save and iptables-restore tools to
- configure nat and filtering;
# mkdir /etc/iptables - # cp c9-doc/core/scripts/iptables.sh /etc/iptables/ + # cp c9-doc/core/conf/iptables/rules.v4 /etc/iptables/ + # cp c9-doc/core/conf/rc.d/iptables /etc/rc.d/ + # chmod +x /etc/rc.d/iptables-
Adjust iptables to your needs, then;
+Adjust rules.v4 to your needs, then;
- # cd /etc/iptables - # sh iptables.sh - # iptables-save > rules.v4 + # sh /etc/rc.d/iptables start
Copy init script, edit if you dont like to let drop when you call stop.
-- # cp c9-doc/core/conf/rc.d/iptables /etc/rc.d/ - # vim /etc/rc.d/iptables - # chmod +x /etc/rc.d/iptables --
Re-configure your rc.conf and add iptables before (w)lan is up;
diff --git a/core/scripts/iptables.sh b/core/scripts/iptables.sh deleted file mode 100644 index 714a18a..0000000 --- a/core/scripts/iptables.sh +++ /dev/null @@ -1,334 +0,0 @@ -#!/bin/sh - -# -# XXXXXXXXXXXXXXXXX -# XXXX Network XXXX -# XXXXXXXXXXXXXXXXX -# + -# | -# v -# +-------------+ +------------------+ -# |table: filter| <---+ | table: nat | -# |chain: INPUT | | | chain: PREROUTING| -# +-----+-------+ | +--------+---------+ -# | | | -# v | v -# [local process] | **************** +--------------+ -# | +---------+ Routing decision +------> |table: filter | -# v **************** |chain: FORWARD| -# **************** +------+-------+ -# Routing decision | -# **************** | -# | | -# v **************** | -# +-------------+ +------> Routing decision <---------------+ -# |table: nat | | **************** -# |chain: OUTPUT| | + -# +-----+-------+ | | -# | | v -# v | +-------------------+ -# +--------------+ | | table: nat | -# |table: filter | +----+ | chain: POSTROUTING| -# |chain: OUTPUT | +--------+----------+ -# +--------------+ | -# v -# XXXXXXXXXXXXXXXXX -# XXXX Network XXXX -# XXXXXXXXXXXXXXXXX -# -# iptables [-t table] {-A|-C|-D} chain rule-specification -# -# iptables [-t table] {-A|-C|-D} chain rule-specification -# -# iptables [-t table] -I chain [rulenum] rule-specification -# -# iptables [-t table] -R chain rulenum rule-specification -# -# iptables [-t table] -D chain rulenum -# -# iptables [-t table] -S [chain [rulenum]] -# -# iptables [-t table] {-F|-L|-Z} [chain [rulenum]] [options...] -# -# iptables [-t table] -N chain -# -# iptables [-t table] -X [chain] -# -# iptables [-t table] -P chain target -# -# iptables [-t table] -E old-chain-name new-chain-name -# -# rule-specification = [matches...] [target] -# -# match = -m matchname [per-match-options] -# -# -# Targets -# -# can be a user defined chain -# -# ACCEPT - accepts the packet -# DROP - drop the packet on the floor -# QUEUE - packet will be stent to queue -# RETURN - stop traversing this chain and -# resume ate the next rule in the -# previeus (calling) chain. -# -# if packet reach the end of the chain or -# a target RETURN, default policy for that -# chain is applayed. -# -# Target Extensions -# -# AUDIT -# CHECKSUM -# CLASSIFY -# DNAT -# DSCP -# LOG -# Torn on kernel logging, will print some -# some information on all matching packets. -# Log data can be read with dmesg or syslogd. -# This is a non-terminating target and a rule -# should be created with matching criteria. -# -# --log-level level -# Level of logging (numeric or see sys- -# log.conf(5) -# -# --log-prefix prefix -# Prefix log messages with specified prefix -# up to 29 chars log -# -# --log-uid -# Log the userid of the process with gener- -# ated the packet -# NFLOG -# This target pass the packet to loaded logging -# backend to log the packet. One or more userspace -# processes may subscribe to the group to receive -# the packets. -# -# ULOG -# This target provides userspace logging of maching -# packets. One or more userspace processes may then -# then subscribe to various multicast groups and -# then receive the packets. -# -# -# Commands -# -# -A, --append chain rule-specification -# -C, --check chain rule-specification -# -D, --delete chain rule-specification -# -D, --delete chain rulenum -# -I, --insert chain [rulenum] rule-specification -# -R, --replace chain rulenum rule-specification -# -L, --list [chain] -# -P, --policy chain target -# -# Parameters -# -# -p, --protocol protocol -# tcp, udp, udplite, icmp, esp, ah, sctp, all -# -s, --source address[/mask][,...] -# -d, --destination address[/mask][,...] -# -j, --jump target -# -g, --goto chain -# -i, --in-interface name -# -o, --out-interface name -# -f, --fragment -# -m, --match options module-name -# iptables can use extended packet matching -# modules. -# -c, --set-counters packets bytes - -IPT="/usr/sbin/iptables" -SPAMLIST="blockedip" -SPAMDROPMSG="BLOCKED IP DROP" -PUB_IF="wlp7s0" -DHCP_SERV="192.168.1.1" -#PUB_IP="192.168.1.65" -#PRIV_IF="wlp3s0" - -modprobe ip_conntrack -modprobe ip_conntrack_ftp - -echo "Stopping ipv4 firewall and deny everyone..." - -iptables -F -iptables -X -iptables -t nat -F -iptables -t nat -X -iptables -t mangle -F -iptables -t mangle -X -iptables -t raw -F -iptables -t raw -X -iptables -t security -F -iptables -t security -X - - -echo "Starting ipv4 firewall filter table..." - -# Set Default Rules -iptables -P INPUT DROP -iptables -P FORWARD DROP -iptables -P OUTPUT DROP - -# Unlimited on local -$IPT -A INPUT -i lo -j ACCEPT -$IPT -A OUTPUT -o lo -j ACCEPT - -# Block sync -$IPT -A INPUT -p tcp ! --syn -m state --state NEW -m limit --limit 5/m --limit-burst 7 -j LOG --log-level 7 --log-prefix "iptables: drop sync: " -$IPT -A INPUT -p tcp ! --syn -m state --state NEW -j DROP - -# Block Fragments -$IPT -A INPUT -f -m limit --limit 5/m --limit-burst 7 -j LOG --log-level 4 --log-prefix "iptables: drop frag: " -$IPT -A INPUT -f -j DROP - -# Block bad stuff -$IPT -A INPUT -p tcp --tcp-flags ALL FIN,URG,PSH -j DROP -$IPT -A INPUT -p tcp --tcp-flags ALL ALL -j DROP - -$IPT -A INPUT -p tcp --tcp-flags ALL NONE -m limit --limit 5/m --limit-burst 7 -j LOG --log-level 4 --log-prefix "iptables: drop null: " -$IPT -A INPUT -p tcp --tcp-flags ALL NONE -j DROP # NULL packets - -$IPT -A INPUT -p tcp --tcp-flags SYN,RST SYN,RST -m limit --limit 5/m --limit-burst 7 -j LOG --log-level 4 --log-prefix "iptables: drop syn rst syn rst: " -$IPT -A INPUT -p tcp --tcp-flags SYN,RST SYN,RST -j DROP - -$IPT -A INPUT -p tcp --tcp-flags SYN,FIN SYN,FIN -m limit --limit 5/m --limit-burst 7 -j LOG --log-level 4 --log-prefix "iptables: drop xmas: " -$IPT -A INPUT -p tcp --tcp-flags SYN,FIN SYN,FIN -j DROP #XMAS - -$IPT -A INPUT -p tcp --tcp-flags FIN,ACK FIN -m limit --limit 5/m --limit-burst 7 -j LOG --log-level 4 --log-prefix "iptables: drop fin scan: " -$IPT -A INPUT -p tcp --tcp-flags FIN,ACK FIN -j DROP # FIN packet scans - -$IPT -A INPUT -p tcp --tcp-flags ALL SYN,RST,ACK,FIN,URG -j DROP - -##### Add your AP rules below ###### - -#echo 1 > /proc/sys/net/ipv4/ip_forward -#$IPT -t nat -A POSTROUTING -o ${PUB_IF} -j SNAT --to ${PUB_IP} -#$IPT -A FORWARD -i ${PRIV_IF} -o ${PUB_IF} -j ACCEPT -#$IPT -A FORWARD -i ${PUB_IF} -o ${PRIV_IF} -j ACCEPT - -#$IPT -A INPUT -i ${PRIV_IF} -j ACCEPT -#$IPT -A OUTPUT -o ${PRIV_IF} -j ACCEPT - -##### Server rules below ###### - -#echo "Allow ICMP" -#$IPT -A INPUT -i ${PUB_IF} -p icmp --icmp-type 0 -s 192.168.0.0/16 -j ACCEPT -#$IPT -A OUTPUT -o ${PUB_IF} -p icmp --icmp-type 0 -d 192.168.0.0/16 -j ACCEPT -#$IPT -A INPUT -i ${PUB_IF} -p icmp --icmp-type 8 -s 192.168.0.0/16 -j ACCEPT -#$IPT -A OUTPUT -o ${PUB_IF} -p icmp --icmp-type 8 -d 192.168.0.0/16 -j ACCEPT - -#echo "Allow DNS Server" -#$IPT -A INPUT -i ${PUB_IF} -p udp --sport 1024:65535 --dport 53 -m state --state NEW,ESTABLISHED -s 192.168.0.0/16 -j ACCEPT -#$IPT -A OUTPUT -o ${PUB_IF} -p udp --sport 53 --dport 1024:65535 -m state --state ESTABLISHED -d 192.168.0.0/16 -j ACCEPT - -#echo "Allow HTTP and HTTPS server" -#$IPT -A INPUT -i ${PUB_IF} -p tcp --dport 443 -m state --state NEW,ESTABLISHED -s 192.168.0.0/16 -j ACCEPT -#$IPT -A INPUT -i ${PUB_IF} -p tcp --dport 80 -m state --state NEW,ESTABLISHED -s 192.168.0.0/16 -j ACCEPT -#$IPT -A OUTPUT -o ${PUB_IF} -p tcp --sport 80 -m state --state NEW,ESTABLISHED -s 192.168.0.0/16 -j ACCEPT -#$IPT -A OUTPUT -o ${PUB_IF} -p tcp --sport 443 -m state --state NEW,ESTABLISHED -s 192.168.0.0/16 -j ACCEPT - -#echo "Allow ssh server" -#$IPT -A OUTPUT -o ${PUB_IF} -p tcp --sport 22 -m state --state ESTABLISHED -j ACCEPT -#$IPT -A INPUT -i ${PUB_IF} -p tcp --dport 22 -m state --state ESTABLISHED -j ACCEPT -#$IPT -A INPUT -i ${PUB_IF} -p tcp --dport 22 -m state --state NEW -m limit --limit 3/min --limit-burst 3 -j ACCEPT - -##### Add your rules below ###### - -echo "Allow DNS Client" - -$IPT -A INPUT -i ${PUB_IF} -p udp --sport 53 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT -$IPT -A INPUT -i ${PUB_IF} -p tcp --sport 53 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT - -$IPT -A OUTPUT -o ${PUB_IF} -p udp --sport 1024:65535 --dport 53 -m state --state NEW,ESTABLISHED -j ACCEPT -$IPT -A OUTPUT -o ${PUB_IF} -p tcp --sport 1024:65535 --dport 53 -m state --state NEW,ESTABLISHED -j ACCEPT - -echo "Allow Whois Client" - -$IPT -A INPUT -i ${PUB_IF} -p tcp --sport 43 -m state --state ESTABLISHED -j ACCEPT -$IPT -A OUTPUT -o ${PUB_IF} -p tcp --sport 1024:65535 --dport 43 -m state --state NEW,ESTABLISHED -j ACCEPT - -echo "Allow HTTP Client" - -$IPT -A INPUT -i ${PUB_IF} -p tcp --sport 80 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT -$IPT -A INPUT -i ${PUB_IF} -p tcp --sport 443 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT -$IPT -A OUTPUT -o ${PUB_IF} -p tcp --sport 1024:65535 --dport 80 -m state --state NEW,ESTABLISHED -j ACCEPT -$IPT -A OUTPUT -o ${PUB_IF} -p tcp --sport 1024:65535 --dport 443 -m state --state NEW,ESTABLISHED -j ACCEPT - -echo "Allow Rsync Client" -$IPT -A OUTPUT -o ${PUB_IF} -p tcp --dport 873 -m state --state NEW,ESTABLISHED -j ACCEPT -$IPT -A INPUT -i ${PUB_IF} -p tcp --sport 873 -m state --state ESTABLISHED -j ACCEPT - -echo "Allow POP3S Client" -$IPT -A OUTPUT -o ${PUB_IF} -p tcp --dport 995 -m state --state NEW,ESTABLISHED -j ACCEPT -$IPT -A INPUT -i ${PUB_IF} -p tcp --sport 995 -m state --state ESTABLISHED -j ACCEPT - -echo "Allow SMTPS Client" -$IPT -A OUTPUT -o ${PUB_IF} -p tcp --dport 465 -m state --state NEW,ESTABLISHED -j ACCEPT -$IPT -A INPUT -i ${PUB_IF} -p tcp --sport 465 -m state --state ESTABLISHED -j ACCEPT - -echo "Allow NTP Client" -$IPT -A OUTPUT -o ${PUB_IF} -p udp --dport 123 -m state --state NEW,ESTABLISHED -j ACCEPT -$IPT -A INPUT -i ${PUB_IF} -p udp --sport 123 -m state --state ESTABLISHED -j ACCEPT - -$IPT -A INPUT -i ${PUB_IF} -p tcp --sport 21 -m state --state ESTABLISHED -j ACCEPT -$IPT -A OUTPUT -o ${PUB_IF} -p tcp --dport 21 -m state --state NEW,ESTABLISHED -j ACCEPT - -echo "Allow IRC Client" -$IPT -A OUTPUT -o ${PUB_IF} -p tcp --sport 1024:65535 --dport 6667 -m state --state NEW -j ACCEPT - -echo "Allow Active FTP Client" -$IPT -A INPUT -i ${PUB_IF} -p tcp --sport 20 -m state --state ESTABLISHED -j ACCEPT -$IPT -A OUTPUT -o ${PUB_IF} -p tcp --dport 20 -m state --state NEW,ESTABLISHED -j ACCEPT - -echo "Allow Git" -$IPT -A OUTPUT -o ${PUB_IF} -p tcp --dport 9418 -m state --state NEW -j ACCEPT - -echo "Allow ssh client" -$IPT -A OUTPUT -o ${PUB_IF} -p tcp --dport 22 -m state --state NEW,ESTABLISHED -j ACCEPT -$IPT -A INPUT -i ${PUB_IF} -p tcp --sport 22 -m state --state ESTABLISHED -j ACCEPT - -#echo "Allow Passive Connections" -$IPT -A INPUT -i ${PUB_IF} -p tcp --sport 1024:65535 --dport 1024: -m state --state ESTABLISHED,RELATED -j ACCEPT -$IPT -A OUTPUT -o ${PUB_IF} -p tcp --sport 1024:65535 --dport 1024: -m state --state ESTABLISHED,RELATED -j ACCEPT - - -# echo "Allow FairCoin" -# $IPT -A OUTPUT -o ${PUB_IF} -p tcp --dport 46392 -m state --state NEW,ESTABLISHED -j ACCEPT -# $IPT -A INPUT -i ${PUB_IF} -p tcp --sport 46392 -m state --state ESTABLISHED -j ACCEPT -# -# echo "Allow Dashcoin" -# $IPT -A OUTPUT -o ${PUB_IF} -p tcp --dport 29080 -m state --state NEW,ESTABLISHED -j ACCEPT -# $IPT -A INPUT -i ${PUB_IF} -p tcp --sport 29080 -m state --state ESTABLISHED -j ACCEPT -# -# echo "Allow warzone2100" -# $IPT -A INPUT -i ${PUB_IF} -p tcp --dport 2100 -s 192.168.0.0/16 -j ACCEPT -# $IPT -A OUTPUT -o ${PUB_IF} -p tcp --sport 2100 -j ACCEPT -# $IPT -A OUTPUT -o ${PUB_IF} -p tcp --dport 2100 -j ACCEPT -# $IPT -A OUTPUT -o ${PUB_IF} -p tcp --dport 9990 -j ACCEPT -# -# echo "Allow wesnoth" -# $IPT -A OUTPUT -o ${PUB_IF} -p tcp --dport 15000 -m state --state NEW -j ACCEPT -# $IPT -A OUTPUT -o ${PUB_IF} -p tcp --dport 14998 -m state --state NEW -j ACCEPT - -##### END your rules ############ -# Less log of known traffic - -# RIP protocol -$IPT -A INPUT -i ${PUB_IF} -p udp --sport 520 --dport 520 -s 192.168.0.0/16 -j DROP - -# DHCP -$IPT -A OUTPUT -o ${PUB_IF} -p udp --sport 68 --dport 67 -d $DHCP_SERV -j ACCEPT -$IPT -A INPUT -i ${PUB_IF} -p udp --sport 67 --dport 68 -s $DHCP_SERV -j ACCEPT - -# log everything else and drop -$IPT -A INPUT -j LOG --log-level 7 --log-prefix "iptables: INPUT: " -$IPT -A OUTPUT -j LOG --log-level 7 --log-prefix "iptables: OUTPUT: " -$IPT -A FORWARD -j LOG --log-level 7 --log-prefix "iptables: FORWARD: " - -exit 0 diff --git a/core/scripts/setup-install.sh b/core/scripts/setup-install.sh index 7625519..4ca01ff 100644 --- a/core/scripts/setup-install.sh +++ b/core/scripts/setup-install.sh @@ -209,6 +209,7 @@ setup_crux() { vim $CHROOT/etc/fstab echo "1.2.6. Initialization Scripts;" + cp $DIR_CONF/rc.d/* $CHROOT/etc/rc.d/ cp $DIR_CONF/rc.conf $CHROOT/etc/ vim $CHROOT/etc/rc.conf -- cgit 1.4.1-2-gfad0