May be somebody knows if there is a product that may be addressing following
issue:

    - On Windows 2000 Professional/XP Professional IIS (version 6.0) is
limited by 10 simultaneous TCP connections.
If 11'th connection comes it going to get HTTP error.
    - IE uses HTTP 1.1 and Keep-Alive. If IE client made a connection to IIS
(and keep-alive is on) then IE will keep this connection
up to ~30 sec (even if does not have any requests to send).
    - Each IE client makes up to 2 connections to the IIS and keeps them in
cash.

    So 10 simultaneous IE clients will eat up to 10 connections and 11'th
user may get an error. This becomes a limitation for my WEB application.

What I am looking for is a Proxy that would not have limitation on number of
incoming TCP connections (IE to Proxy), but would be aware of IIS limitation
(10 connections on Professional platform) and put client's request on hold
until IIS connection would become available.

I've already considered possibility of turning off keep-alive on the server
side and now interested only in discussion of the option described above
(Proxy).