We want to implement an automatic fail-over mechanism for our Internet
Let's say we've got 2 Internet accesses protected by 2 firewalls. The
web browsers are configured to use a web-cache-proxy. The
web-cache-proxy has its "next proxy" configured to be One of the
If the web-cache-proxy "next proxy" parameter was configured to be a
list, (e.g. firewall1, firewall2) AND if the proxy was intelligent
enough, we'd have a fail-over solution.
The problem is to find the proxy able to do that.
We've tried Squid without success, If anybody has got any idea on how
squid would work ...
The best result, so far, are obtained with the Netscape proxy server,
with the implementation of what is described in the
The automatic fail-over works, i.e. when the primary firewall is down,
the users continue to browse the web using
the second firewall.
BUT, we have, in fact, a very degraded mode.
In the proxy log file we have : "proxy-retrieve reports: No response;
retrying (error may be bogus: No such file or directory)". The user is
given a "No response" page, and after a few clicks on the reload button,
the page eventually gets through, but often with missing
images...(very degraded mode).
* Has someone out there succeeded in implementing an automatic
fail-over solution ?
* Has someone tried the
http://home.netscape.com/eng/server/2.5_proxy/p3rel.htm for fail-over ?
* Are there any other NS proxy parameters that would fix the
behavior I'm experiencing ?
Thanks in Advance.
e-mail: francois_arcasedda @
44 (0) 171 892 8341