[x]
Posted via EE Mobile

Search, ask, and monitor your questions on the go with EE Mobile. Visit Experts Exchange from your mobile device and never be out of touch again.
04/01/2005 at 08:48AM PST, ID: 21373073
[x]
Attachment Details
[x]
The Solution Rating System

With so many solutions, how can you tell which solutions are most likely to help you and which ones are not? To provide you with a tool to use, we rate our solutions based on various elements that most accurately determine if a solution is a quality solution. To explain what factors affect the solution rating, here are the elements we take into consideration when formulating our solution rating.

  • The Grade of the Solution
  • The Zone Rank of the Expert Providing the Solution
  • The Number of Author and Expert Comments
  • The Number of Experts Contributing
  • The Feedback of the Community

Your Input Matters
Because of the way the system is set up, the most important variable in this equation is you. As a member of Experts Exchange, you are able to cast your vote on the quality of the solutions in regard to how complete, accurate, helpful and easy to understand each solution is. When you provide your feedback, each rating is adjusted accordingly. So, if you see a solution that has a poor rating that you think is a good solution, let us know by rating it. As you do, the rating will be adjusted and will become more accurate for other members of our site.

If you have any suggestions that you would like to make for our rating system, please ask a question in the Suggestions Zone of Community Support.

Thank you!
7.8

Allow outbound SMTP traffic from only one server....

Asked by jamesreddy in Miscellaneous Networking, Email Protocols

Tags: block, from, pix, server, traffic

We are having a problem wherein a host on our network is sporadically connecting and sending spam to the Internet.  The address he is transmitting from indicates that he is somewhere on the internal network and being NATed to one of our external addresses.  I need to stop this from occuring.  So here is what I want to do.

I want to disable SMTP on our PIX EXCEPT for a single server whose IP address I want to allow.  I tried using the following commands:

outbound  1 deny 0.0.0.0 0.0.0.0 25 tcp


This command effectively stops all SMTP outbound traffic great.  Then I tried to enable the one server to be able to send SMTP:


outbound  1 permit 192.168.1.1 255.255.0.0 25 tcp

But this does not seem to work.  I was under the impression that the PIX took commands in order.  So, if I do a global deny of SMTP, then make a SPECIFIC permission for a host to allow SMTP below that, the allow permission will overrule the global deny.

What is the answer here?  I need to stop the spam, but make sure the SMTP server can still send messages.  How can I make an exception for just one server to send outbound SMTP, block all incoming SMTP (to prevent our server from being used to bounce email), and keep SMTP outbound blocked for all other computers on the network?

Thanks in advance.

James
[+][-]04/01/05 08:53 AM, ID: 13682364

At Experts Exchange, members can ask their questions to thousands of technology professionals, also known as Experts. Experts compete and collaborate to answer those questions by leaving comments like this one.

Start your 30-day free trial to view this Expert Comment or ask the Experts your question.

 
[+][-]04/01/05 09:06 AM, ID: 13682461

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

Start your 30-day free trial to view this Author Comment or ask the Experts your question.

 
[+][-]04/01/05 09:22 AM, ID: 13682581

At Experts Exchange, members can ask their questions to thousands of technology professionals, also known as Experts. Experts compete and collaborate to answer those questions by leaving comments like this one.

Start your 30-day free trial to view this Expert Comment or ask the Experts your question.

 
[+][-]04/01/05 09:42 AM, ID: 13682726

View this solution now by starting your 30-day free trial. Setting up your free trial is quick, easy, and secure. We will return you to this solution, unlocked, when you're done.

 

About this solution

Zones: Miscellaneous Networking, Email Protocols
Tags: block, from, pix, server, traffic
Sign Up Now!
Solution Provided By: gpriceee
Participating Experts: 5
Solution Grade: A
 
 
[+][-]04/01/05 11:49 AM, ID: 13683799

Assisted solutions are selected by the member who asked the question as a comment that contributed to their question's solution.

Start your 30-day free trial to view this Assisted Solution or ask the Experts your question.

 
[+][-]04/01/05 12:03 PM, ID: 13683922

At Experts Exchange, members can ask their questions to thousands of technology professionals, also known as Experts. Experts compete and collaborate to answer those questions by leaving comments like this one.

Start your 30-day free trial to view this Expert Comment or ask the Experts your question.

 
[+][-]04/01/05 12:14 PM, ID: 13684012

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

Start your 30-day free trial to view this Author Comment or ask the Experts your question.

 
[+][-]04/01/05 12:21 PM, ID: 13684070

At Experts Exchange, members can ask their questions to thousands of technology professionals, also known as Experts. Experts compete and collaborate to answer those questions by leaving comments like this one.

Start your 30-day free trial to view this Expert Comment or ask the Experts your question.

 
[+][-]04/01/05 12:58 PM, ID: 13684364

At Experts Exchange, members can ask their questions to thousands of technology professionals, also known as Experts. Experts compete and collaborate to answer those questions by leaving comments like this one.

Start your 30-day free trial to view this Expert Comment or ask the Experts your question.

 
[+][-]04/01/05 11:34 PM, ID: 13686893

At Experts Exchange, members can ask their questions to thousands of technology professionals, also known as Experts. Experts compete and collaborate to answer those questions by leaving comments like this one.

Start your 30-day free trial to view this Expert Comment or ask the Experts your question.

 
[+][-]04/02/05 07:49 AM, ID: 13688396

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

Start your 30-day free trial to view this Author Comment or ask the Experts your question.

 
[+][-]04/02/05 08:04 AM, ID: 13688441

At Experts Exchange, members can ask their questions to thousands of technology professionals, also known as Experts. Experts compete and collaborate to answer those questions by leaving comments like this one.

Start your 30-day free trial to view this Expert Comment or ask the Experts your question.

 
[+][-]04/06/05 03:26 PM, ID: 13722031

At Experts Exchange, members can ask their questions to thousands of technology professionals, also known as Experts. Experts compete and collaborate to answer those questions by leaving comments like this one.

Start your 30-day free trial to view this Expert Comment or ask the Experts your question.

 
[+][-]06/03/05 06:14 AM, ID: 14139180

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

Start your 30-day free trial to view this Author Comment or ask the Experts your question.

 
 
Loading Advertisement...
20091111-EE-VQP-91