Security Gateway becomes unresponsive and memory consumption increases when HTTP traffic passes through

Support Center > Search Results > SecureKnowledge Details

Technical Level

Solution ID	sk109801
Technical Level
Product	IPS, URL Filtering, Application Control
Version	R75 (EOL), R76 (EOL), R76SP (EOL), R76SP.10 (EOL), R76SP.10_VSLS (EOL), R76SP.20 (EOL), R76SP.30 (EOL), R76SP.40 (EOL), R77 (EOL), R77.10 (EOL), R77.20, R77.30 (EOL)
Platform / Model	All
Date Created	25-Jan-2016
Last Modified	19-Mar-2017

Symptoms

Security Gateway becomes unresponsive when HTTP traffic passes through it.
SmartView Monitor shows high memory consumption on Security Gateway.
"out_of_memory: trying to free memory using oom_notify_list" error appears in /var/log/messages file.

Cause

HTTP traffic is not compliant with RFC.
Length of HTTP method field in the HTTP header and/or length of entire HTTP header are sufficiently long to have adverse performance impact on gateway CPU and memory resources.

Solution

Note: To view this solution you need to Sign In .