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Re: Home firewall Hits
From: "Tijl DULLERS" <Tijl.DULLERS () dhl com>
Date: Tue, 04 Nov 2003 11:29:20 +0100

Hi,

Port 162 UDP = SNMP traps.
Dit you configure your wireless router to send SNMTP traps to your workstation PC ?
Or do you have SNMP enabled on the Wireless router at all ?



Preston, Tony wrote:

I am hoping someone here can explain what I am seeing on my home network.
I use Kerio's tiny personal firewall and Windows ME.  I have everything up
to date with the latest patches.

This is my home network and something strange is happening.  The
configurations is


 [cable modem] <----> [ Linksys Wireless Router] ~~~ [ Windows ME W/
firewall ]


From reading the firewall log, I would think that my router is continuously
hitting Port 162 with a UDP message. The odd thing is that it is doing this by using an incrementing port from 192.168.1.1, I see many of these every day, it is
continuous.

I have the latest firmware from linksys, the firewall is rejecting all the
packets.

While I am an experienced programmer, I do not have alot of network
experience, probably
I would classify myself as knowing enough to be dangerous...:)
The activity is at a moderate rate from a couple per second to one every 20
seconds.  If it
is some sort of attack attempt it is using a randomized delay between
packets.

Here is a summary of the hits.

[30/Oct/2003 23:53:48] Rule 'Packet to unopened port received': Blocked: In
UDP, 192.168.1.1:40826->localhost:162, Owner: no owner
     thru
 192.168.1.1:40899->localhost:162, Owner: no owner


I do see other "hits" which are much less frequent which are an occasional
hit here or
there, I am not as concerned about these, but would be curious if anyone has
ideas about
why they occur.   The first one, I might see one or two a day.   The second
one would
show up in sets of 5-10, maybe a couple of times a day.

[30/Oct/2003 23:53:56] Rule 'TCP ack packet attack': Blocked: In TCP,
207.46.197.121:80->localhost:1452, Owner: no owner

[31/Oct/2003 00:00:02] Rule 'Packet to unopened port received': Blocked: In
UDP,
0.0.0.0:68->localhost:67, Owner: no owner

Anything here I should be concerned with??

I am hoping someone here can explain what I am seeing on my home network.
I use Kerio's tiny personal firewall and Windows ME.  I have everything up
to date with the latest patches.

The configurations is:

 [cable modem] <----> [ Linksys Wireless Router] ~~~ [ Windows ME W/
firewall ]


From reading the firewall log, I would think that my router is continuously
hitting Port 162 with a UDP message. The odd thing is that it is doing this by using an incrementing port from 192.168.1.1, I see many of these every day, it is
continuous.

I have the latest firmware from linksys, the firewall is rejecting all the
packets.

While I am an experienced programmer, I do not have alot of network
experience, probably
I would classify myself as knowing enough to be dangerous...:)
The activity is at a moderate rate from a couple per second to one every 20
seconds.  If it
is some sort of attack attempt it is using a randomized delay between
packets.

Here is a summary of the hits.

[30/Oct/2003 23:53:48] Rule 'Packet to unopened port received': Blocked: In
UDP, 192.168.1.1:40826->localhost:162, Owner: no owner
     thru
 192.168.1.1:40899->localhost:162, Owner: no owner


I do see other "hits" which are much less frequent which are an occasional
hit here or
there, I am not as concerned about these, but would be curious if anyone has
ideas about
why they occur.   The first one, I might see one or two a day.   The second
one would
show up in sets of 5-10, maybe a couple of times a day.

[30/Oct/2003 23:53:56] Rule 'TCP ack packet attack': Blocked: In TCP,
207.46.197.121:80->localhost:1452, Owner: no owner

[31/Oct/2003 00:00:02] Rule 'Packet to unopened port received': Blocked: In
UDP,
0.0.0.0:68->localhost:67, Owner: no owner

Anything here I should be concerned with??



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