Session Based Network Issues on 7060E?

So if you are running a 7060E chassis in your enterprise and you are suddenly experiencing strange behavior relating to session based traffic, disable the TCP-Options setting in config global. This is on by default and enables the the client and server to negotiate MSS, window scaling, selective acknowledgements, timestamps, and NOP. These are completely option settings that specifically help the packet along and improve performance.

If any device on your network suffers an issue though and the packets start showing up differently, this becomes an issue and can cause intermittent network connectivity issues and any traffic that is session based (non UDP) will randomly drop and experience extreme latency.

 

I will do a video once I finish assessing the Root Cause Analysis on the issue that I just experienced at an enterprise client.

This entry was posted in Consulting Stories, Fortinet GURU, Tips and Tricks and tagged on by .

About Mike

Michael Pruett, CISSP has a wide range of cyber-security and network engineering expertise. The plethora of vendors that resell hardware but have zero engineering knowledge resulting in the wrong hardware or configuration being deployed is a major pet peeve of Michael's. This site was started in an effort to spread information while providing the option of quality consulting services at a much lower price than Fortinet Professional Services. Owns PacketLlama.Com (Fortinet Hardware Sales) and Office Of The CISO, LLC (Cybersecurity consulting firm).

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