This ensures that all the data transmitted between the client and the firewall remains private. This includes user IDs, passwords and all commands and data. In the United States and Canada the ptelnet client uses the DES encryption algorithm. Today the ptelnet client is only available in the USA and Canada. Ptelnet supports normal users and firewall administrators.
Normal users can request encrypted transmission between unsecured hosts and the firewall.
After a user has connected to the telnet proxy and passed strong user authentication they can connect to another system using the safetn command. The safetn command activates data encryption between the ptelnet client and the firewall. The safetn does not support encryption between secured hosts and the firewall. This restriction is in place because the encryption takes place only between the ptelnet client and the firewall. The data transmission between the firewall and the server host is not encrypted.