How does IP Masquerade differ from Proxy or NAT services?
Proxy: Proxy servers are available for: Win95, NT, Linux, Solaris, etc. Pro: + (1) IP address ; cheap + Optional caching for better performance (WWW, etc.) Con: – All applications behind the proxy server must both SUPPORT proxy services (SOCKS) and be CONFIGURED to use the Proxy server – Screws up WWW counters and WWW statistics A proxy server uses only (1) public IP address, like IP MASQ, and acts as a translator to clients on the private LAN (WWW browser, etc.). This proxy server receives requests like TELNET, FTP, WWW, etc. from the private network on one interface. It would then in turn, initiate these requests as if someone on the local box was making the requests. Once the remote Internet server sends back the requested information, it would re-translate the TCP/IP addresses back to the internal MASQ client and send traffic to the internal requesting host. This is why it is called a PROXY server. Note: ANY applications that you might want to use on the internal machines *MUST* ha
