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Barracuda Web Security Gateway

Seeing Zero sized reply and squid errors, and or timeouts or packet drops.

  • Type: Knowledgebase
  • Date changed: 4 years ago
Solution #00007210  

Scope: 
All Barracuda Web Filters / WSGs,  all firmware versions.

Answer: 

·         Many times an ISP problem exists with their modem or upstream of your network.

·         There is a concern that it could be related to your Firewall

·         It could be something with any perimeter devices like IDS / IPS

·         Even mention of load balancers, DOS and NAT boxes.

 

Basically the issue is seen as a request was sent out from the filter, upon returning to the filter it was seen as a Zero Sized Reply packet. This was not the web filter stating it has a problem, it is a reply the Web filter acknowledged from a bad packet returned to it.

 

Many times the ISP will be able to track down where the issue is and help to resolve the problem experienced.

ADDITIONAL NOTES:

See article here, on Zero sized possible fixes

http://wiki.squid-cache.org/SquidFaq/TroubleShooting#Why_do_I_sometimes_get_.22Zero_Sized_Reply.22.3F


Link to this page:


https://campus.barracuda.com/solution/50160000000uJPDAA2