If you are trying to connect from behind a "smart" firewall which does not use proxy servers, Yahoo! Messenger will automatically search the firewall for an open port, and, if it finds one, use that to connect. If it's not able to find an open port, ask your System Administrator to open port 5050 to our Pager servers, cs1.yahoo.com, cs2.yahoo.com and cs3.yahoo.com.

If your Internet connection involves an HTTP proxy, do the following to configure the Messenger to work through your connection:

1. Check the box next to Enable HTTP proxy
2. Enter the server name and port number in the spaces provided. (You may be able to find this information in your browser, or you may need to ask your System Administrator for assistance.)

If you are behind a router that does not allow anything except HTTP requests to go through but does not use an HTTP proxy server, check the box next to Force "Firewall with no proxies".

If your Internet connection involves a SOCKS proxy, do the following to configure the Pager to work through your connection:

1. Check the box marked "Enable SOCKS proxy."
2. Enter the SOCKS proxy server address and port number. (Please Note: You may have one even if it is not listed in your browser's configuration. Your System Administrator should be able to provide you with this information.)
3. Specify whether you are using a version 4 or 5 SOCKS proxy.
4. Specify any SOCKS proxy authentication (if necessary).

Once you have entered the necessary information, click the Apply button and then OK to put your new settings into effect. Then click the File menu, choose Login and click the Login button

If you have configured the Messenger's Proxies tab but are still unable to connect, please see our Troubleshooting Guide.