Ip spoof from 0.0.0.0

["Ingersoll, Jared" <jared () cswv com>]

I was hoping someone could tell me whether this is a misconfigured device
(perhaps) or is this activity I should be concerned with (and please keep
any witless banter regarding my use of 'concerned with' to yourself-
thanks!). 

These are SYSLOG entries from my firewall (PIX). (the x.x.x.X are static
address on the external interface).

-Jared

urchin 7% grep spoof oSYSLOG
Nov  1 01:42:44 2U:10.1.1.1 Nov 01 2002 01:50:32: %PIX-2-106016: Deny IP
spoof from (0.0.0.0) to x.x.x.5
Nov  1 01:58:04 2U:10.1.1.1 Nov 01 2002 02:05:51: %PIX-2-106016: Deny IP
spoof from (0.0.0.0) to x.x.x.34
Nov  1 02:41:50 2U:10.1.1.1 Nov 01 2002 02:49:37: %PIX-2-106016: Deny IP
spoof from (0.0.0.0) to x.x.x.37
Nov  1 04:36:35 2U:10.1.1.1 Nov 01 2002 04:44:22: %PIX-2-106016: Deny IP
spoof from (0.0.0.0) to x.x.x.19
Nov  1 08:18:42 2U:10.1.1.1 Nov 01 2002 08:26:30: %PIX-2-106016: Deny IP
spoof from (0.0.0.0) to x.x.x.16
Nov  1 08:27:31 2U:10.1.1.1 Nov 01 2002 08:35:19: %PIX-2-106016: Deny IP
spoof from (0.0.0.0) to x.x.x.32
Nov  1 09:32:08 2U:10.1.1.1 Nov 01 2002 09:39:56: %PIX-2-106016: Deny IP
spoof from (0.0.0.0) to x.x.x.33
Nov  1 10:42:02 2U:10.1.1.1 Nov 01 2002 10:49:48: %PIX-2-106016: Deny IP
spoof from (0.0.0.0) to x.x.x.34
Nov  1 18:33:05 2U:10.1.1.1 Nov 01 2002 18:40:51: %PIX-2-106016: Deny IP
spoof from (0.0.0.0) to x.x.x.21
Nov  2 00:10:06 2U:10.1.1.1 Nov 02 2002 00:17:53: %PIX-2-106016: Deny IP
spoof from (0.0.0.0) to x.x.x.7
Nov  2 01:54:34 2U:10.1.1.1 Nov 02 2002 02:02:20: %PIX-2-106016: Deny IP
spoof from (0.0.0.0) to x.x.x.35
Nov  2 08:22:47 2U:10.1.1.1 Nov 02 2002 08:30:33: %PIX-2-106016: Deny IP
spoof from (0.0.0.0) to x.x.x.21
Nov  2 16:18:40 2U:10.1.1.1 Nov 02 2002 16:26:29: %PIX-2-106016: Deny IP
spoof from (0.0.0.0) to x.x.x.33
Nov  2 20:33:58 2U:10.1.1.1 Nov 02 2002 20:41:45: %PIX-2-106016: Deny IP
spoof from (0.0.0.0) to x.x.x.22
Nov  2 22:31:45 2U:10.1.1.1 Nov 02 2002 22:39:34: %PIX-2-106016: Deny IP
spoof from (0.0.0.0) to x.x.x.15
urchin 8% grep spoof SYSLOG
Nov  3 03:49:52 2U:10.1.1.1 Nov 03 2002 03:57:39: %PIX-2-106016: Deny IP
spoof from (0.0.0.0) to x.x.x.33
Nov  3 06:58:18 2U:10.1.1.1 Nov 03 2002 07:06:07: %PIX-2-106016: Deny IP
spoof from (0.0.0.0) to x.x.x.37
Nov  3 08:06:33 2U:10.1.1.1 Nov 03 2002 08:14:21: %PIX-2-106016: Deny IP
spoof from (0.0.0.0) to x.x.x.22
Nov  3 12:32:45 2U:10.1.1.1 Nov 03 2002 12:40:34: %PIX-2-106016: Deny IP
spoof from (0.0.0.0) to x.x.x.15
Nov  3 16:51:02 2U:10.1.1.1 Nov 03 2002 16:58:50: %PIX-2-106016: Deny IP
spoof from (0.0.0.0) to x.x.x.30
Nov  3 19:30:21 2U:10.1.1.1 Nov 03 2002 19:38:11: %PIX-2-106016: Deny IP
spoof from (0.0.0.0) to x.x.x.39
Nov  3 21:04:12 2U:10.1.1.1 Nov 03 2002 21:12:00: %PIX-2-106016: Deny IP
spoof from (0.0.0.0) to x.x.x.33
Nov  4 00:31:34 2U:10.1.1.1 Nov 04 2002 00:39:24: %PIX-2-106016: Deny IP
spoof from (0.0.0.0) to x.x.x.5
Nov  4 03:06:55 2U:10.1.1.1 Nov 04 2002 03:14:44: %PIX-2-106016: Deny IP
spoof from (0.0.0.0) to x.x.x.12
Nov  4 03:16:12 2U:10.1.1.1 Nov 04 2002 03:24:01: %PIX-2-106016: Deny IP
spoof from (0.0.0.0) to x.x.x.15
Nov  4 04:03:17 2U:10.1.1.1 Nov 04 2002 04:11:05: %PIX-2-106016: Deny IP
spoof from (0.0.0.0) to x.x.x.13
Nov  4 04:08:19 2U:10.1.1.1 Nov 04 2002 04:16:08: %PIX-2-106016: Deny IP
spoof from (0.0.0.0) to x.x.x.16
Nov  4 04:21:53 2U:10.1.1.1 Nov 04 2002 04:29:41: %PIX-2-106016: Deny IP
spoof from (0.0.0.0) to x.x.x.30
Nov  4 05:27:16 2U:10.1.1.1 Nov 04 2002 05:35:04: %PIX-2-106016: Deny IP
spoof from (0.0.0.0) to x.x.x.30
Nov  4 08:38:26 2U:10.1.1.1 Nov 04 2002 08:46:16: %PIX-2-106016: Deny IP
spoof from (0.0.0.0) to x.x.x.34
Nov  4 13:33:28 2U:10.1.1.1 Nov 04 2002 13:41:18: %PIX-2-106016: Deny IP
spoof from (0.0.0.0) to x.x.x.19

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