Archive for Network Administration

A Helpful Guide for Deploying Sophos Firewall

sophos-xg-login

This is a helpful guide for deploying Sophos XG Firewall.

Getting Excited about Sophos new UTM Offerings

 

Sophos UTM Offerings

 

http://www.sophos.com/en-us/products/unified-threat-management/how-to-buy.aspx

Contact us if you are interested!

Running Sysprep on Windows 2008 R2 x64 Server

111809_1711_HowtoSyspre1

http://www.codeproject.com/Articles/45365/How-to-Sysprep-Windows-2008-Servers

It’s time for DKIM!

Last week it seems like Google changed their group (Google App’s groups) spam settings and it shutdown most of one of our client’s internal emails to their groups.

We trouble-shooted the email headers, and saw a SPF softfail, but also a link to the new Google groups spam policy. After talking to Engineering over at Google, it became clear that a DKIM setup was necessary to prevent this.

We logged into Google Apps management to generate the public key and then setup the DNS, using the tool at DNS Watch to generate a parallel entry for testing. It’s fixed!

Useful Microsoft Tool for Creating SPF Records

Microsoft has a useful tool for creating SPF records.

It also queries the domain that you put in and nicely formats the results.

Of course, most of us are just “dig text domain” from the CLI or Cygwin on Windows, but it’s nice to have another method as well.

UPDATE There are also some helpful comments from HostGator.