Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

Firewall reporting a SYN attack

Posted on 2013-01-29
7
Medium Priority
?
251 Views
Last Modified: 2013-02-25
We have a single sbs2011 server running exchange with AVG, and we noticed that everything, particulalry our internet service is running slowly. On checking our Firewall logs we noticed that it is reporting a SYN attack, which may explain the speed issues.

I dont know the first thing about this kind of attack, so could anyone please provide a step by step approach on how to deal with this?

Many thanks.
0
Comment
Question by:nigelbeatson
  • 4
  • 3
7 Comments
 
LVL 8

Expert Comment

by:R_Edwards
ID: 38830676
what type of firewall are you using?
0
 

Author Comment

by:nigelbeatson
ID: 38831016
it is a Cisco ASDM 6.2(1)
0
 
LVL 8

Accepted Solution

by:
R_Edwards earned 2000 total points
ID: 38831416
can you post part of the log that shows the SYN attack?
0
Concerto Cloud for Software Providers & ISVs

Can Concerto Cloud Services help you focus on evolving your application offerings, while delivering the best cloud experience to your customers? From DevOps to revenue models and customer support, the answer is yes!

Learn how Concerto can help you.

 

Author Comment

by:nigelbeatson
ID: 38888492
On site today, and will try to provide the requested info.

Many thanks.
0
 

Author Comment

by:nigelbeatson
ID: 38924794
Problem appears to have resolved itself? Ie no further problems have been encountered.

Many thanks
0
 
LVL 8

Expert Comment

by:R_Edwards
ID: 38925599
good to hear.
0
 

Author Closing Comment

by:nigelbeatson
ID: 38925608
Thanks for your assistance
0

Featured Post

Important Lessons on Recovering from Petya

In their most recent webinar, Skyport Systems explores ways to isolate and protect critical databases to keep the core of your company safe from harm.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Written by Glen Knight (demazter) as part of a series of how-to articles. Introduction One of the biggest consumers of disk space with Small Business Server 2008(SBS) is Windows Server Update Services, more affectionately known as WSUS. For t…
Because virtualization becomes more and more common, and, with Microsoft Hyper-V included in Windows Server at no additional costs, and, most server hardware nowadays is more than capable of running a physical Small Business Server (SBS) 2008 or 201…
Video by: ITPro.TV
In this episode Don builds upon the troubleshooting techniques by demonstrating how to properly monitor a vSphere deployment to detect problems before they occur. He begins the show using tools found within the vSphere suite as ends the show demonst…
This lesson discusses how to use a Mainform + Subforms in Microsoft Access to find and enter data for payments on orders. The sample data comes from a custom shop that builds and sells movable storage structures that are delivered to your property. …
Suggested Courses

916 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question