shorewall_code/Shorewall2/action.Drop

#
# Shorewall 2.1 /usr/share/shorewall/action.Drop
#
#	The default DROP common rules
#
# This action is invoked before a DROP policy is enforced. The purpose of the action
# is:
#
#	a) Avoid logging lots of useless cruft. 
#	b) Ensure that 'auth' requests are rejected, even if the policy is DROP.
#	   Otherwise, you may experience problems establishing connections with
#	   servers that use auth.
#       c) Ensure that certain ICMP packets that are necessary for successful 
#	   internet operation are always ACCEPTed.
#
# IF YOU ARE HAVING CONNECTION PROBLEMS, CHANGING THIS FILE WON'T HELP!!!!!!!!!!!!
######################################################################################
#TARGET  	SOURCE		DEST      	PROTO
#
# Reject 'auth'
#
RejectAuth
#
# Don't log broadcasts
#
dropBcast
#
# ACCEPT critical ICMP types
#
AllowICMPs	-		-		icmp
#
# Drop packets that in the INVALID state -- these are usually ICMP packets and just
# confuse people when they appear in the log.
#
dropInvalid
#
# Drop Microsoft noise so that it doesn't clutter up the log.
#
DropSMB
DropUPnP
#
# Drop 'newnotsyn' traffic so that it doesn't get logged.
#
dropNotSyn	-		-		tcp
#
# Drop late-arriving DNS replies. These are just a nuisance and clutter up the log.
#
DropDNSrep
#LAST LINE -- ADD YOUR ENTRIES BEFORE THIS ONE -- DO NOT REMOVE