I have a NW65sp4 box with BM38sp1...

I have set up ip specific filter exception for ports required to access a
portal hosted off-site. (for the remote sites specific ipaddress)

When trying to access the portal the login screen more often than not
times out (504 - gateway time out.)...the only 'fix' for this has been to
unload the proxy and reload it with the clear cache switch '-cc'...this
ofcourse is unsatisfactory. Has this actually been 'fixing it' albeit
temporarily or has it been coincidental.

Any assistance in solving this would be great.