SNAT POOL Lists

A SNAT or SNAT pool is really irrespective of the server node's capabilities. TCP allows for 65,535 port numbers per IP address. Subtract the 1024 "well known" ports, and you have ~64k ports. The BIG-IP server side connection (in a full proxy configuration) is the client side connection to the server node. A stateful client will establish a connection to a server using a random source port, going to a known listening destination port (ie. port 80). If the client runs out of random ports to a given destination IP address, it can no longer make new connections to that destination address. The SNAT pool, therefore, allows the BIG-IP to spread the connections across multiple source addresses.