# # Shorewall -- /usr/share/shorewall/action.A_Drop # # The audited 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 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 DPORT SPORT # # Count packets that come through here # COUNT # # Special Handling for Auth # Auth(A_DROP) # # ACCEPT critical ICMP types # # For IPv6 connectivity ipv6-icmp broadcasting is required so # AllowICMPs must be before broadcast Drop. # A_AllowICMPs - - icmp # # Don't log broadcasts # 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. # dropInvalid(audit) # # Drop Microsoft noise so that it doesn't clutter up the log. # SMB(A_DROP) 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