*filter
:INPUT DROP [0:0]
:FORWARD DROP [0:0]
:OUTPUT DROP [0:0]

###################################################################
# Simple webserver filter
#
# Usage:
#   firejail --net=eth0 --ip=192.168.1.105 --netfilter=/etc/firejail/webserver.net /etc/init.d/apache2 start
#   firejail --net=eth0 --ip=192.168.1.105 --netfilter=/etc/firejail/webserver.net /etc/init.d/nginx start
#
###################################################################

# allow webserver traffic
-A INPUT -p tcp --dport 80 -m state --state NEW,ESTABLISHED -j ACCEPT
-A OUTPUT -p tcp --sport 80 -m state --state ESTABLISHED -j ACCEPT
-A INPUT -p tcp --dport 443 -m state --state NEW,ESTABLISHED -j ACCEPT
-A OUTPUT -p tcp --sport 443 -m state --state ESTABLISHED -j ACCEPT

# allow incoming ping
-A INPUT -p icmp --icmp-type echo-request -j ACCEPT
-A OUTPUT -p icmp --icmp-type echo-reply -j ACCEPT

# allow outgoing DNS
-A OUTPUT -p udp --dport 53 -j ACCEPT
-A INPUT -p udp --sport 53 -j ACCEPT

COMMIT