A syn flood attack

Unanswered Question
May 7th, 2009

hi,

I receive the next message in unix, my webserver, What the meaning?

What i can do?

"warning: high tcp connect timeout rate! system (port 443) may be under a syn flood attack"

I have this problem too.
0 votes
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 4 (1 ratings)
Loading.
pesanchez2002 Thu, 05/07/2009 - 05:43

Thanks by your answer,

I don't have router edge.

I have the next connection

pix---sw---webserver

!

!

internet

Giuseppe Larosa Thu, 05/07/2009 - 10:20

Hello Pedro,

if the pix is not on the path to/from internet you cannot do anything.

You should have the webserver on an DMZ (third leg/interface) of pix.

doing so you could protect the server.

By the way, the message says:

"warning: high tcp connect timeout rate! system (port 443) may be under a syn flood attack"

port 443 that is

Protocol / Name: https

If you don't need https you can close the service on the web server.

if you are using https this cannot be done.

I would suggest you to review the DMZ and to have it protected by the pix that can provide features similar to TCP intercept.

Hope to help

Giuseppe

Actions

This Discussion