RE: [Snort-users] SA login failed.....

Do you have port 1433 open to the internet? When you make a connection
to a server, your source port is random, while the destination server
replies on the same port. my initial thoughts are that you have port
1433 open to the internet or to that network where the source is coming
from. Depending on your firewall, I myself would re-check my fw rules
and run a packet sniffer to watch the traffic coming from and to that
host. It better to see it in tcpdump or tethereal versus seeing alerts
in snort, you see it real-time with all relevant info

 

Thanks,

Michael Brown, 

  _____  

From: snort-users-admin@lists.sourceforge.net
[mailto:snort-users-admin@lists.sourceforge.net] On Behalf Of Jeff
Heckart
Posted At: Tuesday, March 29, 2005 9:46 AM
Posted To: Snort
Conversation: SA login failed.....
Subject: [Snort-users] SA login failed.....
  

I am getting quite a few unusual alerts, and am confused with what I am
seeing.

 

The payload of the packet is:

04 01 00 3B 00 00 01 00 AA 27 00 18 48 00 00 01        ...;....*'..H...

0E 1B 00 4C 6F 67 69 6E 20 66 61 69 6C 65 64 20        ...Login failed 

66 6F 72 20 75 73 65 72 20 27 73 61 27 2E 00 00        for user 'sa'...

00 00 FD 02 00 00 00 00 00 00 00                       ..}........

 

The strange thing is that the source is:

x.x.x.x:1433 (our network)

Destination

x.x.x.x: 2838/random (remote unknown network)

 

This has now happened to two systems, both running mysql on tcp/1433.
It just makes no sense that the source port is 1433.  What am I missing
here?