Solved

Block SMTP Traffic on SonicWall PRO3060 Enhanced OS

Posted on 2009-07-16
4
1,678 Views
Last Modified: 2013-11-30
On a Sonicwall Pro3060 with Enhanced OS, I need to block all smtp traffic, port 25 from going to WAN.  The only exception for that I need is for our e-mail server to allow for SMTP port 25.  I can't have workstations having ability to have SMTP enabled.

0
Comment
Question by:fireguy1125
  • 2
4 Comments
 
LVL 4

Accepted Solution

by:
CreditSoupTech earned 500 total points
Comment Utility
Just add an outbound rule denying from LAN to WAN Service SMTP: LAN-->WAN DENY 25
Then add a rule that allows LAN to WAN Source [Internal Mail Server IP] DESTINATION [ANY] Service 25: LAN-->WAN Source x.x.x.x Destination ANY 25

Is that clear enough?  
0
 
LVL 1

Author Comment

by:fireguy1125
Comment Utility
Thanks, I was putting in the Destination as "WAN Subnets".  When I changed it to ANY I tested and works.

I always get confused with all the Address Groups that SonicWall has.
0
 
LVL 4

Expert Comment

by:CreditSoupTech
Comment Utility
Yeah. WAN Subnets is just your WAN address's or your public IP's assigned to the WAN subnet.
0
 

Expert Comment

by:ethernet69
Comment Utility
very helpful...thanks for the explanation.

Brian
0

Featured Post

What Should I Do With This Threat Intelligence?

Are you wondering if you actually need threat intelligence? The answer is yes. We explain the basics for creating useful threat intelligence.

Join & Write a Comment

Occasionally, we encounter connectivity issues that appear to be isolated to cable internet service.  The issues we typically encountered were reset errors within Internet Explorer when accessing web sites or continually dropped or failing VPN conne…
Hello Friends, My friends and relatives always ask me how to delete all the various types of emails at once in our g-mail  or windows live account.  So I researched this topic to find a unique solution to this query.  Here it is for those who do …
Excel styles will make formatting consistent and let you apply and change formatting faster. In this tutorial, you'll learn how to use Excel's built-in styles, how to modify styles, and how to create your own. You'll also learn how to use your custo…
In this seventh video of the Xpdf series, we discuss and demonstrate the PDFfonts utility, which lists all the fonts used in a PDF file. It does this via a command line interface, making it suitable for use in programs, scripts, batch files — any pl…

762 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

Need Help in Real-Time?

Connect with top rated Experts

6 Experts available now in Live!

Get 1:1 Help Now