At 09:08 AM 3/29/2003 -0800, Phil Faris wrote:
Can anyone tell me what this Shorewall log entry means? I get about fifty to sixty hits like this every day.

Mar 29 16:12:57 Gateway Shorewall:net2all:DROP: IN=eth0 OUT= MAC=00:20:af:38:31:c5:00:10:67:00:b5:6b:08:00 SRC=64.214.177.149 DST=209.233.16.123 LEN=48 TOS=00 PREC=0x00 TTL=111 ID=28282 DF PROTO=TCP SPT=3463 DPT=445 SEQ=3057110942 ACK=0 WINDOW=16384 SYN URGP=0

Interpreting log entries when given NO information about the system involved is always guesswork. Here I assume your setup is typical (for example, eth0 is the external interface, 209.233.16.123 is your IP address).


The traffic is TCP (PROTO=) to port 445 (DPT=). /etc/services says 445 is "microsoft-ds". A quick Google search on "microsoft-ds" turns up two things of interest.

1. "microsoft-ds" is associated with a Microsoft service called LanMan.

2. BugTraq reports a DoS attack associated with use of this port.

More analysis would require more Windows expertise than I possess, but perhaps someone else here knows enough to say more. If not, this should be enough to let you use Google productively to learn more.







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