mirror of
https://gitlab.com/shorewall/code.git
synced 2024-12-22 22:30:58 +01:00
48 lines
2.1 KiB
Modula-2
48 lines
2.1 KiB
Modula-2
|
############################################################################
|
||
|
|
# Shorewall 1.3 -- /etc/shorewall/common.def
|
||
|
|
#
|
||
|
|
# This file defines the rules that are applied before a policy of
|
||
|
|
# DROP or REJECT is applied. In addition to the rules defined in this file,
|
||
|
|
# the firewall will also define a DROP rule for each subnet broadcast
|
||
|
|
# address defined in /etc/shorewall/interfaces (including "detect").
|
||
|
|
#
|
||
|
|
# Do not modify this file -- if you wish to change these rules, create
|
||
|
|
# /etc/shorewall/common to replace it. It is suggested that you include
|
||
|
|
# the command "source /etc/shorewall/common.def" in your
|
||
|
|
# /etc/shorewall/common file so that you will continue to get the
|
||
|
|
# advantage of new releases of this file.
|
||
|
|
#
|
||
|
|
run_iptables -A common -p icmp -j icmpdef
|
||
|
|
############################################################################
|
||
|
|
# Drop invalid state TCP packets
|
||
|
|
#
|
||
|
|
run_iptables -A common -m state -p tcp --state INVALID -j DROP
|
||
|
|
############################################################################
|
||
|
|
# accept ACKs and RSTs that aren't related to any session so that the
|
||
|
|
# protocol stack can handle them and so the ACKs can create connection
|
||
|
|
# tracking entries.
|
||
|
|
#
|
||
|
|
run_iptables -A common -p tcp --tcp-flags ACK ACK -j ACCEPT
|
||
|
|
run_iptables -A common -p tcp --tcp-flags RST RST -j ACCEPT
|
||
|
|
############################################################################
|
||
|
|
# NETBIOS chatter
|
||
|
|
#
|
||
|
|
run_iptables -A common -p udp --dport 137:139 -j REJECT
|
||
|
|
run_iptables -A common -p udp --dport 445 -j REJECT
|
||
|
|
run_iptables -A common -p tcp --dport 135 -j reject
|
||
|
|
############################################################################
|
||
|
|
# UPnP
|
||
|
|
#
|
||
|
|
run_iptables -A common -p udp --dport 1900 -j DROP
|
||
|
|
############################################################################
|
||
|
|
# BROADCASTS
|
||
|
|
#
|
||
|
|
run_iptables -A common -d 255.255.255.255 -j DROP
|
||
|
|
run_iptables -A common -d 224.0.0.0/4 -j DROP
|
||
|
|
############################################################################
|
||
|
|
# AUTH -- Silently reject it so that connections don't get delayed.
|
||
|
|
#
|
||
|
|
run_iptables -A common -p tcp --dport 113 -j reject
|
||
|
|
|
||
|
|
|