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SYN, DenialofService Attacks

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SYN, DenialofService Attacks - 29.Oct.2001 6:44:00 PM   


Posts: 26
Joined: 5.Jul.2001
From: Houston, TX USA
Status: offline
Help, I am being attacked. My ISP has helped me track some of the IP's but some seem to be spoofed. I need to create a log hourly instead of daily. The logs are so large I cannot load them in anything to view. (currently I have a large log loaded in an Access table.)Currently I am disabling logging, renaming the file and enabling logging again. The file is Gigabytes if I let it go for an entire day.

I realize this is not an ISA problem but I would like to know of any way to manage or block it after a particular IP hits my router so many times.

some of the logs indicated that the attacking server was trying to run cmd.exe. My ISP determined this to be the CodeRed virus infected servers.

Now the logs show information I cannot read, like a dump from debug.

Enough rambling, can anyone point me in a direction here?

Can I stop this?

Post #: 1
RE: SYN, DenialofService Attacks - 29.Oct.2001 9:25:00 PM   


Posts: 50013
Joined: 10.Jan.2001
From: Texas
Status: offline
Hi Jenifer,

A couple things you can do:

1. Turn off logging. This isn't a very good idea.

2. Log fewer fields. You can change the fields that are logged in the properties dialog box of the logs.

You should also stop all the ISA Server services and remove the logs as it sounds like they may have become corrupt. After moving the logs, restart the ISA services.



Get It Here!

(in reply to jenifern)
Post #: 2

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