Background: Squid: squid-3.1.23-2.el6.x86_64 OS: CentOS 6.5 - Linux 2.6.32-431.23.3.el6.x86_64 #1 SMP Thu Jul 31 17:20:5= 1 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux Issue: I have two boxes, same OS, same squid binary, same config file, same squid-= passwd file. Configuration is setup for ncsa_auth. Squid runs as user squid. Both systems return OK to use of command line of ncsa_auth as squid user to= the login and password in the squid-passwd file. Using squid however via a curl thru one of the proxy ips/port of the system= : one system gives 403 forbidden, the other works just fine. Tried removing authentication entirely, a fully open squid. It fails - same message. Also looked at thusfar: rpm -q query_options --requires squid-3.1.23-2.el6.x86_64 the same on both boxes. Ran yum update on both to insure everything was up to latest - no change. Any ideas what I should look far? - S. Baker Manager of Technical Operations, BrightEdge