Netgear FVX538v1 FVX538 Reference Manual - Page 217
Table C-18. System Logs: Invalid Packets continued
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ProSafe VPN Firewall 200 FVX538 Reference Manual Table C-18. System Logs: Invalid Packets (continued) Explanation Recommended Action Message Explanation Recommended Action Message Explanation Recommended Action Message Explanation Recommended Action Message Explanation Invalid RST packet 1. Invalid packets are dropped. 2. Use this command to enable dropping and logging of the invalid packets: fw/rules/attackChecks/configure dropInvalid 1 To allow invalid packet and disable logging: fw/rules/attackChecks/configure dropInvalid 0 2007 Oct 1 00:44:17 [FVX538] [kernel] [INVALID][ICMP_TYPE][DROP] SRC=192.168.20.10 DST=192.168.20.2 PROTO=ICMP TYPE=19 CODE=0 Invalid ICMP Type 1. Invalid packets are dropped. 2. Use this command to enable dropping and logging of the invalid packets: fw/rules/attackChecks/configure dropInvalid 1 To allow invalid packet and disable logging: fw/rules/attackChecks/configure dropInvalid 0 2007 Oct 1 00:44:17 [FVX538] [kernel] [INVALID][TCP_FLAG_COMBINATION][DROP] SRC=192.168.20.10 DST=192.168.20.2 PROTO=TCP SPT=23 DPT=54899 Invalid TCP flag combination 1. Invalid packets are dropped. 2. Use this command to enable dropping and logging of the invalid packets: fw/rules/attackChecks/configure dropInvalid 1 To allow invalid packet and disable logging: fw/rules/attackChecks/configure dropInvalid 0 2007 Oct 1 00:44:17 [FVX538] [kernel] [INVALID][BAD_CHECKSUM]DROP] SRC=192.168.20.10 DST=192.168.20.2 PROTO=TCP SPT=23 DPT=54899 Bad Checksum 1. Invalid packets are dropped. 2. Use this command to enable dropping and logging of the invalid packets: fw/rules/attackChecks/configure dropInvalid 1 To allow invalid packet and disable logging: fw/rules/attackChecks/configure dropInvalid 0 2007 Oct 1 00:44:17 [FVX538] [kernel] [INVALID][BAD_HW_CHECKSUM][DROP] SRC=192.168.20.10 DST=192.168.20.2 PROTO=ICMP TYPE=3 CODE=0 Bad Hardware Checksum for ICMP packets System Logs and Error Messages v1.0, March 2009 C-11