I install Kaspersky for Proxy server on Squid, my license key is 100 node

I connect 4 clients to proxy server and access website and check license key the license show "Count: 1" always like below.


Product name: Kaspersky Anti-Virus for Proxy Server
Creation date: 15-03-2005
Expiration date: 14-06-2006
Serial 0007-0004XXX-0000XXXX
Type: Commercial
Count: 1 <------------------------ show "1" always.
Lifespan: 365

I think license will be show "Count: 4" because 4 client access proxy server.

I don't know Kaspersky for proxy check license from where?

Thank you for answer.