ProSecure Unified Threat Management UTM10 or UTM25 Reference Manual

Table C-17. System Logs: Invalid Packets (continued)

Message

2007 Oct 1 00:44:17 [UTM] [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

None

 

 

 

 

Message

2007 Oct 1 00:44:17 [UTM] [kernel]

 

 

[INVALID][BAD_HW_CHECKSUM][DROP] SRC=192.168.20.10

 

 

DST=192.168.20.2 PROTO=ICMP TYPE=3 CODE=0

 

 

 

 

Explanation

Bad hardware checksum for ICMP packets.

 

 

 

 

Recommended Action

None

 

 

 

 

Message

[INVALID][MALFORMED_PACKET][DROP] SRC=192.168.20.10

 

 

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

 

 

 

 

Explanation

Malformed packet.

 

 

 

 

Recommended Action

None

 

 

 

 

Message

2007 Oct 1 00:44:17 [UTM] [kernel]

 

 

[INVALID][SHORT_PACKET][DROP] SRC=192.168.20.10

 

 

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

 

 

 

 

Explanation

Short packet.

 

 

 

 

Recommended Action

None

 

 

 

 

Message

[INVALID][ INVALID_STATE][DROP] SRC=192.168.20.10

 

 

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

 

 

 

 

Explanation

Packet with invalid state.

 

 

 

 

Recommended Action

None

 

 

 

 

Message

2007 Oct 1 00:44:17 [UTM] [kernel]

 

 

[INVALID][REOPEN_CLOSE_CONN][DROP] SRC=192.168.20.10

 

 

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

 

 

 

 

Explanation

Attempt to re-open/close session.

 

 

 

 

Recommended Action

None

 

 

 

 

Message

2007 Oct 1 00:44:17 [UTM] [kernel]

 

 

[INVALID][OUT_OF_WINDOW][DROP] SRC=192.168.20.10

 

 

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

 

 

 

 

Explanation

Packet not in TCP window.

 

 

 

 

Recommended Action

None

 

 

 

 

Message

2007 Oct 1 00:44:17 [UTM] [kernel]

 

 

[INVALID][ERR_HELPER_ROUTINE][DROP] SRC=192.168.20.10

 

 

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

 

 

 

 

 

 

 

System Logs and Error Messages

C-11

v1.0, September 2009

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NETGEAR UTM10EW-100NAS, UTM25-100NAS Invalidbadchecksumdrop SRC=192.168.20.10, Invalidbadhwchecksumdrop SRC=192.168.20.10