Help with webfilter Regex to allow Steam

Question

The webfilter is blocking the Windows Steam app from connecting to the servers. I tried following the regex tutorial but it still makes no sense to me. 
 
 The ip addresses that are being blocked by decrypt and scan are: 
 https://ext3-iad1.steamserver.net:27032/ 
 https://ext3-iad1.steamserver.net:27024/ 
 ext1-ord1.steamserver.net:27024/ 
 and more. 
 What I want is for the webfilter to allow any domain that matches "steamserver.net" but I can't figure out which regex entry to use. 
 
 Here is an example of my webfilter log: 
 2022:10:15-16:47:55 XXXXXXX httpproxy[9709]: id="0002" severity="info" sys="SecureWeb" sub="http" name="web request blocked" action="block" method="CONNECT" srcip="192.168.1.30" dstip="" user="" group="" ad_domain="" statuscode="403" cached="0" profile="REF_DefaultHTTPProfile (Default Web Filter Profile)" filteraction="REF_DefaultHTTPCFFAction (Default content filter action)" size="2646" request="0xe6442e00" url=" ">ext1-ord1.steamserver.net:27021/" referer="" error="Target service not allowed" authtime="0" dnstime="0" aptptime="0" cattime="0" avscantime="0" fullreqtime="294726" device="0" auth="0" ua="" exceptions=""

Amodin · Accepted Answer

That port is in my example above, as part of the three ports that have to be open for it to work correctly. It's looking for that port to be open in your filter it appears to me. You don't need the steamserver.net address.

Amodin · Answer

There should be only a couple of things you need. I run Steam pretty much daily. 
 Web filtering:

Skipping: 
 Authentication / Caching / Block by download size / Antivirus / Extension blocking / MIME type blocking / URL Filter / Content Removal

Matching these URLs: 
 steampowered.com

Steam does need to have some ports opened. I have three service definitions : 
 
 For any gaming ports that I need to open, I create a 'Gaming' group and put all of the ports that I have to open in that group, then add that group to the Firewall Rules. Just keep it organized. ;) 
 This should be all you need to run and play in Steam. If you still run into issues, you can create a Network definition for Valve/Steam (155.133.253.0/24) and add it to your Transparent Skip Lists

Help with webfilter Regex to allow Steam

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