We help IT Professionals succeed at work.

We've partnered with Certified Experts, Carl Webster and Richard Faulkner, to bring you a podcast all about Citrix Workspace, moving to the cloud, and analytics & intelligence. Episode 2 coming soon!Listen Now

x

How do I block all traffic from a foreign country using SBS2003 with ISA 2004

MasPreguntas
MasPreguntas asked
on
Medium Priority
282 Views
Last Modified: 2010-04-09
Hello all,

I would like to setup a rule to block remote smtp connections from China and Latin America by IP address or range of IP's. I followed the steps outlined in the last post here: http://forums.isaserver.org/m_250018400/mpage_1/key_block%2cchina/tm.htm#250018416 , but now I am getting a ton of event: 15108 warnings in the Application log. What is the proper way to configure ISA to accomplish this task?

Thanks,

Todd  
Comment
Watch Question

Enterprise Architect
CERTIFIED EXPERT
Top Expert 2008
Commented:
I assume you have published your mail server through a publishing rule? By default the listener that gets configured shows Anywhere as the FROM entry. In the bottom half of the FROM box, you will see an exceptions section.

make subnet entries that cover the IP addresses you want to block port 25 traffic for ( highlight the firewall policy then use the toolbox on the right to create subnets etc) then add these entries to the exceptions box. Save the policy.



Not the solution you were looking for? Getting a personalized solution is easy.

Ask the Experts
Keith AlabasterEnterprise Architect
CERTIFIED EXPERT
Top Expert 2008

Commented:
Alternatively of course you could add the exclusions within the SMTP service itself but ISA is probably the best place.

Author

Commented:
I ended up creating a new address range and creating a new firewall access rule. I called the rule 'Spam-killer' with action set to deny all outbound traffic from the freshly created address range to localhost appied to all users. I chose this method over using the SMTP publishing rule, because I decided to just block all access instead of just SMTP. Your method would have worked, so I'll give you the points.

Thanks.
Keith AlabasterEnterprise Architect
CERTIFIED EXPERT
Top Expert 2008

Commented:
Thank you :)
Access more of Experts Exchange with a free account
Thanks for using Experts Exchange.

Create a free account to continue.

Limited access with a free account allows you to:

  • View three pieces of content (articles, solutions, posts, and videos)
  • Ask the experts questions (counted toward content limit)
  • Customize your dashboard and profile

*This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

OR

Please enter a first name

Please enter a last name

8+ characters (letters, numbers, and a symbol)

By clicking, you agree to the Terms of Use and Privacy Policy.