Cisco came out with two new products called "LocalDirector" and
"DistributedDirector", (last july as far as I know).
Especially LocalDirector can solve some of your problems. It is a
"black box" with one IP address. To this box you can connect serveral
WEBservers (up to 12 I think). The blackbox will do loadscheduling
to all these connected WEBservers.
The beauty is, that all these servers are reachable trough only one
IP-address/DNS hostname. You can firewall connections between
the internet and the blackbox quite easy. So you don't have to worry
about connections to your servers.
I only received a glossy white paper on this subject so I cant' judge
on the robustness of this product yet, but it seems to be a promissing
Hope this helps,
tschaefer @ brokat.de (Thorsten Sch fer)
20/08/96 09:10 AM
To: firewalls @ GreatCircle.COM @ SMTP
cc: (bcc: Rens Schipper/NOTES4/NL)
Subject: Load balancing Firewall for multiple SSL Web Server
Does anyone know of a firewall concept which provides a load
balancing for maybe 10 SSL Web Server (one Web adress in the
internet !). The concept has to guarantee, once a SSL session
between the client and one of the Web server has established,
the specified Web server does not change during the whole
What about a solution for 2 or 3 firewalls with dynamic
adress change (After each request the valid web adress
changes between the 3 firewalls). Each firewall is followed
by 10 SSL Web servers. Also the concept has to guarantee,
once a SSL session between the client and one of the Web
server has established, the specified Web server does not
change during the whole session !!
email: tschaefer @