shorewall_code/Shorewall/action.A_Reject
Tuomo Soini 772f88b1fd action.A_Reject: improve comment text
Signed-off-by: Tuomo Soini <tis@foobar.fi>
2016-04-12 13:17:56 +03:00

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#
# Shorewall -- /usr/share/shorewall/action.A_Reject
#
# The audited default REJECT action common rules
#
# This action is invoked before a REJECT policy is enforced. The purpose
# of the action is:
#
# a) Avoid logging lots of useless cruft.
# b) 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!!!!!!!!!
###############################################################################
#ACTION SOURCE DEST PROTO
#
# Count packets that come through here
#
COUNT
#
# ACCEPT critical ICMP types
#
# For IPv6 connectivity ipv6-icmp broadcasting is required so
# AllowICMPs must be before broadcast Drop.
#
A_AllowICMPs - - icmp
#
# Drop Broadcasts so they don't clutter up the log
# (broadcasts must *not* be rejected).
#
dropBcast(audit)
#
# Drop packets that are in the INVALID state -- these are usually ICMP packets
# and just confuse people when they appear in the log (these ICMPs cannot be
# rejected).
#
dropInvalid(audit)
#
# Reject Microsoft noise so that it doesn't clutter up the log.
#
SMB(A_REJECT)
A_DropUPnP
#
# Drop 'newnotsyn' traffic so that it doesn't get logged.
#
dropNotSyn(audit) - - tcp
#
# Drop late-arriving DNS replies. These are just a nuisance and clutter up
# the log.
#
A_DropDNSrep