NETGEAR UTM50-100NAS, UTM5-100NAS manual Invalid Packet Logging, Multicast/Broadcast Logs

Models: UTM5-100NAS UTM50-100NAS

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ProSecure Unified Threat Management (UTM) Appliance Reference Manual

Multicast/Broadcast Logs

This section describes logs that are generated when the UTM processes multicast and broadcast packets.

Table C-16. System Logs: Multicast/Broadcast

Message

Jan 1 07:24:13 [UTM] [kernel] MCAST-BCAST IN=WAN OUT=SELF

 

SRC=192.168.1.73 DST=192.168.1.255 PROTO=UDP SPT=138 DPT=138

 

 

Explanation

• This packet (broadcast) is destined to the device from the WAN network.

 

• For other settings, see Table C-1.

 

 

Recommended Action

None

 

 

Invalid Packet Logging

This section describes logs that are generated when the UTM processes invalid packets.

Table C-17. System Logs: Invalid Packets

Message

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

 

[NO_CONNTRACK_ENTRY] [DROP] SRC=192.168.20.10

 

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

 

 

Explanation

No connection tracking entry exists.

 

 

Recommended Action

None

 

 

Message

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

None

 

 

Message

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

None

 

 

Message

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

None

 

 

C-10

System Logs and Error Messages

v1.0, January 2010

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NETGEAR UTM50-100NAS manual Invalid Packet Logging, Multicast/Broadcast Logs, Table C-16. System Logs Multicast/Broadcast