First nftables version of minifirewall
This commit is contained in:
parent
3bcaee5b58
commit
129b323f80
10
README.md
10
README.md
|
@ -2,13 +2,15 @@ Minifirewall
|
||||||
=========
|
=========
|
||||||
|
|
||||||
Minifirewall is shellscripts for easy firewalling on a standalone server
|
Minifirewall is shellscripts for easy firewalling on a standalone server
|
||||||
we used netfilter/iptables http://netfilter.org/ designed for recent Linux kernel
|
we used nftables https://wiki.nftables.org/ designed for recent Linux kernel
|
||||||
See https://gitea.evolix.org/evolix/minifirewall
|
See https://gitea.evolix.org/evolix/minifirewall
|
||||||
|
|
||||||
## Install
|
## Install
|
||||||
|
|
||||||
~~~
|
~~~
|
||||||
install -m 0700 minifirewall /etc/init.d/minifirewall
|
install -m 0700 minifirewall.service /etc/systemd/system/minifirewall.service
|
||||||
|
install -m 0700 minifirewall-start.sh /usr/local/sbin/minifirewall-start.sh
|
||||||
|
install -m 0700 minifirewall-stop.sh /usr/local/sbin/minifirewall-stop.sh
|
||||||
install -m 0600 minifirewall.conf /etc/default/minifirewall
|
install -m 0600 minifirewall.conf /etc/default/minifirewall
|
||||||
~~~
|
~~~
|
||||||
|
|
||||||
|
@ -17,19 +19,17 @@ install -m 0600 minifirewall.conf /etc/default/minifirewall
|
||||||
Edit /etc/default/minifirewall file:
|
Edit /etc/default/minifirewall file:
|
||||||
|
|
||||||
* If your interface is not _eth0_, change *INT* variable
|
* If your interface is not _eth0_, change *INT* variable
|
||||||
* If you don't IPv6 : *IPv6=off*
|
|
||||||
* Modify *INTLAN* variable, probably with your *IP/32* or your local network if you trust it
|
* Modify *INTLAN* variable, probably with your *IP/32* or your local network if you trust it
|
||||||
* Set your trusted and privilegied IP addresses in *TRUSTEDIPS* and *PRIVILEGIEDIPS* variables
|
* Set your trusted and privilegied IP addresses in *TRUSTEDIPS* and *PRIVILEGIEDIPS* variables
|
||||||
* Authorize your +public+ services with *SERVICESTCP1* and *SERVICESUDP1* variables
|
* Authorize your +public+ services with *SERVICESTCP1* and *SERVICESUDP1* variables
|
||||||
* Authorize your +semi-public+ services (only for *TRUSTEDIPS* and *PRIVILEGIEDIPS* ) with *SERVICESTCP2* and *SERVICESUDP2* variables
|
* Authorize your +semi-public+ services (only for *TRUSTEDIPS* and *PRIVILEGIEDIPS* ) with *SERVICESTCP2* and *SERVICESUDP2* variables
|
||||||
* Authorize your +private+ services (only for *TRUSTEDIPS* ) with *SERVICESTCP3* and *SERVICESUDP3* variables
|
* Authorize your +private+ services (only for *TRUSTEDIPS* ) with *SERVICESTCP3* and *SERVICESUDP3* variables
|
||||||
* Configure your authorizations for external services : DNS, HTTP, HTTPS, SMTP, SSH, NTP
|
* Configure your authorizations for external services : DNS, HTTP, HTTPS, SMTP, SSH, NTP
|
||||||
* Add your specific rules
|
|
||||||
|
|
||||||
## Usage
|
## Usage
|
||||||
|
|
||||||
~~~
|
~~~
|
||||||
/etc/init.d/minifirewall start/stop/restart
|
systemctl start/stop/restart minifirewall.service
|
||||||
~~~
|
~~~
|
||||||
|
|
||||||
If you want to add minifirewall in boot sequence:
|
If you want to add minifirewall in boot sequence:
|
||||||
|
|
365
minifirewall-start.sh
Executable file
365
minifirewall-start.sh
Executable file
|
@ -0,0 +1,365 @@
|
||||||
|
#!/bin/sh
|
||||||
|
|
||||||
|
# minifirewall
|
||||||
|
# See https://gitea.evolix.org/evolix/minifirewall
|
||||||
|
|
||||||
|
# Copyright (c) 2007-2020 Evolix
|
||||||
|
# This program is free software; you can redistribute it and/or
|
||||||
|
# modify it under the terms of the GNU General Public License
|
||||||
|
# as published by the Free Software Foundation; either version 3
|
||||||
|
# of the License.
|
||||||
|
|
||||||
|
# Description
|
||||||
|
# script for standalone server
|
||||||
|
|
||||||
|
# Start minifirewall
|
||||||
|
#
|
||||||
|
|
||||||
|
# Variables configuration
|
||||||
|
#########################
|
||||||
|
|
||||||
|
# nft path
|
||||||
|
NFT=/usr/sbin/nft
|
||||||
|
|
||||||
|
# Configuration
|
||||||
|
configfile="/etc/default/minifirewall"
|
||||||
|
|
||||||
|
DOCKER=$(grep "DOCKER=" /etc/default/minifirewall | awk -F '=' -F "'" '{print $2}')
|
||||||
|
INT=$(grep "INT=" /etc/default/minifirewall | awk -F '=' -F "'" '{print $2}')
|
||||||
|
|
||||||
|
# sysctl network security settings
|
||||||
|
##################################
|
||||||
|
|
||||||
|
# Don't answer to broadcast pings
|
||||||
|
echo 1 > /proc/sys/net/ipv4/icmp_echo_ignore_broadcasts
|
||||||
|
|
||||||
|
# Ignore bogus ICMP responses
|
||||||
|
echo 1 > /proc/sys/net/ipv4/icmp_ignore_bogus_error_responses
|
||||||
|
|
||||||
|
# Disable Source Routing
|
||||||
|
for i in /proc/sys/net/ipv4/conf/*/accept_source_route; do
|
||||||
|
echo 0 > $i
|
||||||
|
done
|
||||||
|
|
||||||
|
# Enable TCP SYN cookies to avoid TCP-SYN-FLOOD attacks
|
||||||
|
# cf http://cr.yp.to/syncookies.html
|
||||||
|
echo 1 > /proc/sys/net/ipv4/tcp_syncookies
|
||||||
|
|
||||||
|
# Disable ICMP redirects
|
||||||
|
for i in /proc/sys/net/ipv4/conf/*/accept_redirects; do
|
||||||
|
echo 0 > $i
|
||||||
|
done
|
||||||
|
|
||||||
|
for i in /proc/sys/net/ipv4/conf/*/send_redirects; do
|
||||||
|
echo 0 > $i
|
||||||
|
done
|
||||||
|
|
||||||
|
# Enable Reverse Path filtering : verify if responses use same network interface
|
||||||
|
for i in /proc/sys/net/ipv4/conf/*/rp_filter; do
|
||||||
|
echo 1 > $i
|
||||||
|
done
|
||||||
|
|
||||||
|
# log des paquets avec adresse incoherente
|
||||||
|
for i in /proc/sys/net/ipv4/conf/*/log_martians; do
|
||||||
|
echo 1 > $i
|
||||||
|
done
|
||||||
|
|
||||||
|
# IPTables configuration
|
||||||
|
########################
|
||||||
|
|
||||||
|
if ! test -f $configfile; then
|
||||||
|
echo "$configfile does not exist" >&2
|
||||||
|
exit 1
|
||||||
|
fi
|
||||||
|
|
||||||
|
. $configfile
|
||||||
|
|
||||||
|
# Flush everything first
|
||||||
|
$NFT flush ruleset
|
||||||
|
|
||||||
|
# Add a filter table
|
||||||
|
$NFT add table inet minifirewall
|
||||||
|
|
||||||
|
# Add the input, forward, and output base chains. The policy for input and forward will be to drop. The policy for output will be to accept.
|
||||||
|
$NFT add chain inet minifirewall minifirewall_input '{ type filter hook input priority 0 ; policy drop ; }'
|
||||||
|
$NFT add chain inet minifirewall minifirewall_forward '{ type filter hook forward priority 0 ; policy drop ; }'
|
||||||
|
$NFT add chain inet minifirewall minifirewall_output '{ type filter hook output priority 0 ; policy accept ; }'
|
||||||
|
|
||||||
|
# Add set with trusted IP addresses
|
||||||
|
#$NFT define minifirewall_trusted_ips = {$(echo $TRUSTEDIPS | sed 's/ /, /g')}
|
||||||
|
$NFT add set inet minifirewall minifirewall_trusted_ips { type ipv4_addr\;}
|
||||||
|
$NFT add element inet minifirewall minifirewall_trusted_ips {$(echo $TRUSTEDIPS | sed 's/ /, /g')}
|
||||||
|
|
||||||
|
# Add set with privileged IP addresses
|
||||||
|
#$NFT define minifirewall_privileged_ips = {$(echo $PRIVILEGIEDIPS | sed 's/ /, /g')}
|
||||||
|
$NFT add set inet minifirewall minifirewall_privileged_ips { type ipv4_addr\;}
|
||||||
|
$NFT add element inet minifirewall minifirewall_privileged_ips {$(echo $PRIVILEGIEDIPS | sed 's/ /, /g')}
|
||||||
|
|
||||||
|
# Add TCP/UDP chains for protected, public, semi-public and private ports
|
||||||
|
$NFT add chain inet minifirewall protected_tcp_ports
|
||||||
|
$NFT add chain inet minifirewall protected_udp_ports
|
||||||
|
$NFT add chain inet minifirewall public_tcp_ports
|
||||||
|
$NFT add chain inet minifirewall public_udp_ports
|
||||||
|
$NFT add chain inet minifirewall semipublic_tcp_ports
|
||||||
|
$NFT add chain inet minifirewall semipublic_udp_ports
|
||||||
|
$NFT add chain inet minifirewall private_tcp_ports
|
||||||
|
$NFT add chain inet minifirewall private_udp_ports
|
||||||
|
|
||||||
|
# Related and established traffic is accepted
|
||||||
|
$NFT add rule inet minifirewall minifirewall_input ct state related,established accept
|
||||||
|
|
||||||
|
# All loopback interface traffic is accepted
|
||||||
|
$NFT add rule inet minifirewall minifirewall_input iif lo accept
|
||||||
|
|
||||||
|
# Allow services for $INTLAN (local server or local network) is accepted
|
||||||
|
$NFT add rule inet minifirewall minifirewall_input ip saddr $INTLAN accept
|
||||||
|
|
||||||
|
# Any invalid traffic is dropped
|
||||||
|
$NFT add rule inet minifirewall minifirewall_input ct state invalid drop
|
||||||
|
|
||||||
|
# ICMP and IGMP traffic is accepted
|
||||||
|
$NFT add rule inet minifirewall minifirewall_input meta l4proto ipv6-icmp icmpv6 type '{ destination-unreachable, packet-too-big, time-exceeded, parameter-problem, mld-listener-query, mld-listener-report, mld-listener-reduction, nd-router-solicit, nd-router-advert, nd-neighbor-solicit, nd-neighbor-advert, ind-neighbor-solicit, ind-neighbor-advert, mld2-listener-report }' accept
|
||||||
|
$NFT add rule inet minifirewall minifirewall_input meta l4proto icmp icmp type '{ destination-unreachable, router-solicitation, router-advertisement, time-exceeded, parameter-problem }' accept
|
||||||
|
$NFT add rule inet minifirewall minifirewall_input ip protocol igmp accept
|
||||||
|
|
||||||
|
# New UDP traffic from trusted IPs jumps to the private_udp_ports chain
|
||||||
|
$NFT add rule inet minifirewall minifirewall_input 'ip saddr @minifirewall_trusted_ips meta l4proto udp ct state new jump private_udp_ports'
|
||||||
|
|
||||||
|
# New TCP traffic from trusted IPs jumps to the private_tcp_ports chain
|
||||||
|
$NFT add rule inet minifirewall minifirewall_input 'ip saddr @minifirewall_trusted_ips meta l4proto tcp tcp flags & (fin|syn|rst|ack) == syn ct state new jump private_tcp_ports'
|
||||||
|
|
||||||
|
# New UDP traffic from trusted IPs and privileged IPs jumps to the semipublic_udp_ports chain
|
||||||
|
$NFT add rule inet minifirewall minifirewall_input 'ip saddr @minifirewall_privileged_ips meta l4proto udp ct state new jump semipublic_udp_ports'
|
||||||
|
$NFT add rule inet minifirewall minifirewall_input 'ip saddr @minifirewall_trusted_ips meta l4proto udp ct state new jump semipublic_udp_ports'
|
||||||
|
|
||||||
|
# New TCP traffic from trusted IPs and privileged IPs jumps to the semipublic_tcp_ports chain
|
||||||
|
$NFT add rule inet minifirewall minifirewall_input 'ip saddr @minifirewall_privileged_ips meta l4proto tcp tcp flags & (fin|syn|rst|ack) == syn ct state new jump semipublic_tcp_ports'
|
||||||
|
$NFT add rule inet minifirewall minifirewall_input 'ip saddr @minifirewall_trusted_ips meta l4proto tcp tcp flags & (fin|syn|rst|ack) == syn ct state new jump semipublic_tcp_ports'
|
||||||
|
|
||||||
|
# New UDP traffic from any other IP jumps to the public_udp_ports chain
|
||||||
|
$NFT add rule inet minifirewall minifirewall_input 'meta l4proto udp ct state new jump public_udp_ports'
|
||||||
|
|
||||||
|
# New TCP traffic from any other IP jumps to the public_tcp_ports chain
|
||||||
|
$NFT add rule inet minifirewall minifirewall_input 'meta l4proto tcp tcp flags & (fin|syn|rst|ack) == syn ct state new jump public_tcp_ports'
|
||||||
|
|
||||||
|
# Reject all traffic that was not processed by other rules
|
||||||
|
$NFT add rule inet minifirewall minifirewall_input meta l4proto udp reject
|
||||||
|
$NFT add rule inet minifirewall minifirewall_input meta l4proto tcp reject with tcp reset
|
||||||
|
$NFT add rule inet minifirewall minifirewall_input counter reject with icmpx type port-unreachable
|
||||||
|
|
||||||
|
# Feed public_tcp_ports chain with public TCP ports
|
||||||
|
for x in $SERVICESTCP1
|
||||||
|
do
|
||||||
|
$NFT add rule inet minifirewall public_tcp_ports tcp dport $x accept
|
||||||
|
done
|
||||||
|
|
||||||
|
# Feed public_udp_ports chain with public UDP ports
|
||||||
|
for x in $SERVICESUDP1
|
||||||
|
do
|
||||||
|
$NFT add rule inet minifirewall public_tcp_ports udp dport $x accept
|
||||||
|
done
|
||||||
|
|
||||||
|
# Feed semipublic_tcp_ports chain with semi-public TCP ports
|
||||||
|
for x in $SERVICESTCP2
|
||||||
|
do
|
||||||
|
$NFT add rule inet minifirewall semipublic_tcp_ports tcp dport $x accept
|
||||||
|
done
|
||||||
|
|
||||||
|
# Feed semipublic_udp_ports chain with semi-public UDP ports
|
||||||
|
for x in $SERVICESUDP2
|
||||||
|
do
|
||||||
|
$NFT add rule inet minifirewall semipublic_udp_ports udp dport $x accept
|
||||||
|
done
|
||||||
|
|
||||||
|
# Feed private_tcp_ports chain with private TCP ports
|
||||||
|
for x in $SERVICESTCP3
|
||||||
|
do
|
||||||
|
$NFT add rule inet minifirewall private_tcp_ports tcp dport $x accept
|
||||||
|
done
|
||||||
|
|
||||||
|
# Feed private_udp_ports chain with private UDP ports
|
||||||
|
for x in $SERVICESUDP3
|
||||||
|
do
|
||||||
|
$NFT add rule inet minifirewall private_udp_ports udp dport $x accept
|
||||||
|
done
|
||||||
|
|
||||||
|
# Feed protected_tcp_ports chain with protected TCP ports
|
||||||
|
for x in $SERVICESTCP1p
|
||||||
|
do
|
||||||
|
$NFT add rule inet minifirewall protected_tcp_ports tcp dport $x accept
|
||||||
|
done
|
||||||
|
|
||||||
|
# Feed protected_udp_ports chain with protected UDP ports
|
||||||
|
for x in $SERVICESUDP1p
|
||||||
|
do
|
||||||
|
$NFT add rule inet minifirewall protected_udp_ports udp dport $x accept
|
||||||
|
done
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
### We avoid "martians" packets, typical when W32/Blaster virus
|
||||||
|
## attacked windowsupdate.com and DNS was changed to 127.0.0.1
|
||||||
|
## $NFT -t NAT -I PREROUTING -s $LOOPBACK -i ! lo -j DROP
|
||||||
|
#$NFT -A INPUT -s $LOOPBACK ! -i lo -j DROP
|
||||||
|
#
|
||||||
|
#
|
||||||
|
#if [ "$DOCKER" = "on" ]; then
|
||||||
|
#
|
||||||
|
# $NFT -N MINIFW-DOCKER-TRUSTED
|
||||||
|
# $NFT -A MINIFW-DOCKER-TRUSTED -j DROP
|
||||||
|
#
|
||||||
|
# $NFT -N MINIFW-DOCKER-PRIVILEGED
|
||||||
|
# $NFT -A MINIFW-DOCKER-PRIVILEGED -j MINIFW-DOCKER-TRUSTED
|
||||||
|
# $NFT -A MINIFW-DOCKER-PRIVILEGED -j RETURN
|
||||||
|
#
|
||||||
|
# $NFT -N MINIFW-DOCKER-PUB
|
||||||
|
# $NFT -A MINIFW-DOCKER-PUB -j MINIFW-DOCKER-PRIVILEGED
|
||||||
|
# $NFT -A MINIFW-DOCKER-PUB -j RETURN
|
||||||
|
#
|
||||||
|
# # Flush DOCKER-USER if exist, create it if absent
|
||||||
|
# if chain_exists 'DOCKER-USER'; then
|
||||||
|
# $NFT -F DOCKER-USER
|
||||||
|
# else
|
||||||
|
# $NFT -N DOCKER-USER
|
||||||
|
# fi;
|
||||||
|
#
|
||||||
|
# # Pipe new connection through MINIFW-DOCKER-PUB
|
||||||
|
# $NFT -A DOCKER-USER -i $INT -m state --state NEW -j MINIFW-DOCKER-PUB
|
||||||
|
# $NFT -A DOCKER-USER -j RETURN
|
||||||
|
#
|
||||||
|
#fi
|
||||||
|
#
|
||||||
|
#
|
||||||
|
## Local services restrictions
|
||||||
|
##############################
|
||||||
|
#
|
||||||
|
#if [ "$DOCKER" = "on" ]; then
|
||||||
|
#
|
||||||
|
# # Public services defined in SERVICESTCP1 & SERVICESUDP1
|
||||||
|
# for dstport in $SERVICESTCP1
|
||||||
|
# do
|
||||||
|
# $NFT -I MINIFW-DOCKER-PUB -p tcp --dport "$dstport" -j RETURN
|
||||||
|
# done
|
||||||
|
#
|
||||||
|
# for dstport in $SERVICESUDP1
|
||||||
|
# do
|
||||||
|
# $NFT -I MINIFW-DOCKER-PUB -p udp --dport "$dstport" -j RETURN
|
||||||
|
# done
|
||||||
|
#
|
||||||
|
# # Privileged services (accessible from privileged & trusted IPs)
|
||||||
|
# for dstport in $SERVICESTCP2
|
||||||
|
# do
|
||||||
|
# for srcip in $PRIVILEGIEDIPS
|
||||||
|
# do
|
||||||
|
# $NFT -I MINIFW-DOCKER-PRIVILEGED -p tcp -s "$srcip" --dport "$dstport" -j RETURN
|
||||||
|
# done
|
||||||
|
#
|
||||||
|
# for srcip in $TRUSTEDIPS
|
||||||
|
# do
|
||||||
|
# $NFT -I MINIFW-DOCKER-PRIVILEGED -p tcp -s "$srcip" --dport "$dstport" -j RETURN
|
||||||
|
# done
|
||||||
|
# done
|
||||||
|
#
|
||||||
|
# for dstport in $SERVICESUDP2
|
||||||
|
# do
|
||||||
|
# for srcip in $PRIVILEGIEDIPS
|
||||||
|
# do
|
||||||
|
# $NFT -I MINIFW-DOCKER-PRIVILEGED -p udp -s "$srcip" --dport "$dstport" -j RETURN
|
||||||
|
# done
|
||||||
|
#
|
||||||
|
# for srcip in $TRUSTEDIPS
|
||||||
|
# do
|
||||||
|
# $NFT -I MINIFW-DOCKER-PRIVILEGED -p udp -s "$srcip" --dport "$dstport" -j RETURN
|
||||||
|
# done
|
||||||
|
# done
|
||||||
|
#
|
||||||
|
# # Trusted services (accessible from trusted IPs)
|
||||||
|
# for dstport in $SERVICESTCP3
|
||||||
|
# do
|
||||||
|
# for srcip in $TRUSTEDIPS
|
||||||
|
# do
|
||||||
|
# $NFT -I MINIFW-DOCKER-TRUSTED -p tcp -s "$srcip" --dport "$dstport" -j RETURN
|
||||||
|
# done
|
||||||
|
# done
|
||||||
|
#
|
||||||
|
# for dstport in $SERVICESUDP3
|
||||||
|
# do
|
||||||
|
# for srcip in $TRUSTEDIPS
|
||||||
|
# do
|
||||||
|
# $NFT -I MINIFW-DOCKER-TRUSTED -p udp -s "$srcip" --dport "$dstport" -j RETURN
|
||||||
|
# done
|
||||||
|
# done
|
||||||
|
#fi
|
||||||
|
#
|
||||||
|
## External services
|
||||||
|
####################
|
||||||
|
#
|
||||||
|
## DNS authorizations
|
||||||
|
#for x in $DNSSERVEURS
|
||||||
|
# do
|
||||||
|
# $NFT -A INPUT -p tcp ! --syn --sport 53 --dport $PORTSUSER -s $x -j ACCEPT
|
||||||
|
# $NFT -A INPUT -p udp --sport 53 --dport $PORTSUSER -s $x -m state --state ESTABLISHED,RELATED -j ACCEPT
|
||||||
|
# $NFT -A OUTPUT -o $INT -p udp -d $x --dport 53 --match state --state NEW -j ACCEPT
|
||||||
|
# done
|
||||||
|
#
|
||||||
|
## HTTP (TCP/80) authorizations
|
||||||
|
#for x in $HTTPSITES
|
||||||
|
# do
|
||||||
|
# $NFT -A INPUT -p tcp ! --syn --sport 80 --dport $PORTSUSER -s $x -j ACCEPT
|
||||||
|
# done
|
||||||
|
#
|
||||||
|
## HTTPS (TCP/443) authorizations
|
||||||
|
#for x in $HTTPSSITES
|
||||||
|
# do
|
||||||
|
# $NFT -A INPUT -p tcp ! --syn --sport 443 --dport $PORTSUSER -s $x -j ACCEPT
|
||||||
|
# done
|
||||||
|
#
|
||||||
|
## FTP (so complex protocol...) authorizations
|
||||||
|
#for x in $FTPSITES
|
||||||
|
# do
|
||||||
|
# # requests on Control connection
|
||||||
|
# $NFT -A INPUT -p tcp ! --syn --sport 21 --dport $PORTSUSER -s $x -j ACCEPT
|
||||||
|
# # FTP port-mode on Data Connection
|
||||||
|
# $NFT -A INPUT -p tcp --sport 20 --dport $PORTSUSER -s $x -j ACCEPT
|
||||||
|
# # FTP passive-mode on Data Connection
|
||||||
|
# # WARNING, this allow all connections on TCP ports > 1024
|
||||||
|
# $NFT -A INPUT -p tcp ! --syn --sport $PORTSUSER --dport $PORTSUSER -s $x -j ACCEPT
|
||||||
|
# done
|
||||||
|
#
|
||||||
|
## SSH authorizations
|
||||||
|
#for x in $SSHOK
|
||||||
|
# do
|
||||||
|
# $NFT -A INPUT -p tcp ! --syn --sport 22 -s $x -j ACCEPT
|
||||||
|
# done
|
||||||
|
#
|
||||||
|
## SMTP authorizations
|
||||||
|
#for x in $SMTPOK
|
||||||
|
# do
|
||||||
|
# $NFT -A INPUT -p tcp ! --syn --sport 25 --dport $PORTSUSER -s $x -j ACCEPT
|
||||||
|
# done
|
||||||
|
#
|
||||||
|
## secure SMTP (TCP/465 et TCP/587) authorizations
|
||||||
|
#for x in $SMTPSECUREOK
|
||||||
|
# do
|
||||||
|
# $NFT -A INPUT -p tcp ! --syn --sport 465 --dport $PORTSUSER -s $x -j ACCEPT
|
||||||
|
# $NFT -A INPUT -p tcp ! --syn --sport 587 --dport $PORTSUSER -s $x -j ACCEPT
|
||||||
|
# done
|
||||||
|
#
|
||||||
|
## NTP authorizations
|
||||||
|
#for x in $NTPOK
|
||||||
|
# do
|
||||||
|
# $NFT -A INPUT -p udp --sport 123 -s $x -j ACCEPT
|
||||||
|
# $NFT -A OUTPUT -o $INT -p udp -d $x --dport 123 --match state --state NEW -j ACCEPT
|
||||||
|
# done
|
||||||
|
#
|
||||||
|
## Always allow ICMP
|
||||||
|
#$NFT -A INPUT -p icmp -j ACCEPT
|
||||||
|
#[ "$IPV6" != "off" ] && $NFT6 -A INPUT -p icmpv6 -j ACCEPT
|
||||||
|
|
||||||
|
trap - INT TERM EXIT
|
||||||
|
|
||||||
|
echo "...starting NFTables rules is now finish : OK"
|
||||||
|
|
||||||
|
exit 0
|
31
minifirewall-stop.sh
Executable file
31
minifirewall-stop.sh
Executable file
|
@ -0,0 +1,31 @@
|
||||||
|
#!/bin/sh
|
||||||
|
|
||||||
|
# minifirewall
|
||||||
|
# See https://gitea.evolix.org/evolix/minifirewall
|
||||||
|
|
||||||
|
# Copyright (c) 2007-2020 Evolix
|
||||||
|
# This program is free software; you can redistribute it and/or
|
||||||
|
# modify it under the terms of the GNU General Public License
|
||||||
|
# as published by the Free Software Foundation; either version 3
|
||||||
|
# of the License.
|
||||||
|
|
||||||
|
# Description
|
||||||
|
# script for standalone server
|
||||||
|
|
||||||
|
# Stop minifirewall
|
||||||
|
#
|
||||||
|
|
||||||
|
# Variables configuration
|
||||||
|
#########################
|
||||||
|
|
||||||
|
# nft path
|
||||||
|
NFT=/usr/sbin/nft
|
||||||
|
|
||||||
|
echo "Flush all rules and accept everything..."
|
||||||
|
|
||||||
|
# Flush everything
|
||||||
|
$NFT flush ruleset
|
||||||
|
|
||||||
|
echo "...flushing IPTables rules is now finish : OK"
|
||||||
|
|
||||||
|
exit 0
|
|
@ -1,6 +1,4 @@
|
||||||
# Configuration for minifirewall : https://forge.evolix.org/projects/minifirewall
|
# Configuration for minifirewall : https://forge.evolix.org/projects/minifirewall
|
||||||
# For fun, we keep last change from first CVS repository:
|
|
||||||
# version 0.1 - 12 juillet 2007 $Id: firewall.rc,v 1.2 2007/07/12 19:08:59 reg Exp $
|
|
||||||
|
|
||||||
# Main interface
|
# Main interface
|
||||||
INT='eth0'
|
INT='eth0'
|
||||||
|
@ -21,9 +19,9 @@ INTLAN='192.168.0.2/32'
|
||||||
# Trusted IPv4 addresses for private and semi-public services
|
# Trusted IPv4 addresses for private and semi-public services
|
||||||
TRUSTEDIPS=''
|
TRUSTEDIPS=''
|
||||||
|
|
||||||
# Privilegied IPv4 addresses for semi-public services
|
# Privileged IPv4 addresses for semi-public services
|
||||||
# (no need to add again TRUSTEDIPS)
|
# (no need to add again TRUSTEDIPS)
|
||||||
PRIVILEGIEDIPS=''
|
PRIVILEGEDIPS=''
|
||||||
|
|
||||||
|
|
||||||
# Local services IPv4/IPv6 restrictions
|
# Local services IPv4/IPv6 restrictions
|
||||||
|
@ -77,27 +75,3 @@ SMTPSECUREOK=''
|
||||||
# NTP authorizations
|
# NTP authorizations
|
||||||
NTPOK='0.0.0.0/0'
|
NTPOK='0.0.0.0/0'
|
||||||
|
|
||||||
|
|
||||||
# IPv6 Specific rules
|
|
||||||
#####################
|
|
||||||
|
|
||||||
# Example: allow input HTTP/HTTPS/SMTP/DNS traffic
|
|
||||||
/sbin/ip6tables -A INPUT -i $INT -p tcp --sport 80 --match state --state ESTABLISHED,RELATED -j ACCEPT
|
|
||||||
/sbin/ip6tables -A INPUT -i $INT -p tcp --sport 443 --match state --state ESTABLISHED,RELATED -j ACCEPT
|
|
||||||
/sbin/ip6tables -A INPUT -i $INT -p tcp --sport 25 --match state --state ESTABLISHED,RELATED -j ACCEPT
|
|
||||||
/sbin/ip6tables -A INPUT -i $INT -p udp --sport 53 --match state --state ESTABLISHED,RELATED -j ACCEPT
|
|
||||||
/sbin/ip6tables -A INPUT -i $INT -p tcp --sport 53 --match state --state ESTABLISHED,RELATED -j ACCEPT
|
|
||||||
|
|
||||||
# Example: allow output DNS, NTP and traceroute traffic
|
|
||||||
/sbin/ip6tables -A OUTPUT -o $INT -p udp --dport 53 --match state --state NEW -j ACCEPT
|
|
||||||
/sbin/ip6tables -A OUTPUT -o $INT -p udp --dport 123 --match state --state NEW -j ACCEPT
|
|
||||||
#/sbin/ip6tables -A OUTPUT -o $INT -p udp --dport 33434:33523 --match state --state NEW -j ACCEPT
|
|
||||||
|
|
||||||
# Example: allow DHCPv6
|
|
||||||
/sbin/ip6tables -A INPUT -i $INT -p udp --dport 546 -d fe80::/64 -j ACCEPT
|
|
||||||
/sbin/ip6tables -A OUTPUT -o $INT -p udp --dport 547 -j ACCEPT
|
|
||||||
|
|
||||||
# IPv4 Specific rules
|
|
||||||
#####################
|
|
||||||
|
|
||||||
# /sbin/iptables ...
|
|
||||||
|
|
14
minifirewall.service
Normal file
14
minifirewall.service
Normal file
|
@ -0,0 +1,14 @@
|
||||||
|
[Unit]
|
||||||
|
Description=minifirewall
|
||||||
|
Documentation=https://gitea.evolix.org/evolix/minifirewall
|
||||||
|
After=default.target
|
||||||
|
|
||||||
|
[Service]
|
||||||
|
Type=oneshot
|
||||||
|
ExecStart=/usr/sbin/minifirewall-start.sh
|
||||||
|
RemainAfterExit=yes
|
||||||
|
ExecStop=/usr/sbin/minifirewall-stop.sh
|
||||||
|
StandardOutput=journal
|
||||||
|
|
||||||
|
[Install]
|
||||||
|
WantedBy=multi-user.target
|
Loading…
Reference in a new issue