A TCP/IP connection creates a pseudo-tty device (ptty) on the fly at the host system. The numbers assigned to them are not stored, but are lost at disconnect. The specific ptty may change with each connection.

Some configurations may require that users login through specified ptty ports. SCO UNIX has a solution for this in the recon command. Similar commands may exist for other host operating systems, but they are not as well documented.

This entry was posted on Thursday, March 22nd, 2007 at 2:29 pm and is filed under TCP/IP, UNIX. You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed.