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ProSafe VPN Firewall 200 FVX538 Reference Manual

System Logs and Error Messages C-11

v1.0, January 2010

Message 2007 Oct 1 00:44:17 [FVX538] [kernel]

[INVALID][RST_PACKET][DROP] SRC=192.168.20.10

DST=192.168.20.2 PROTO=TCP SPT=23 DPT=54899

Explanation Invalid RST packet

Recommended Action

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

Message 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

Explanation Invalid ICMP Type

Recommended Action

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

Message 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

Explanation Invalid TCP flag combination

Recommended Action

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

Message 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

Explanation Bad Checksum

Recommended Action

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

Message 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

Table C-18. System Logs: Invalid Packets (continued)