Don't use the same credentials on both machines. Also use different computer names and if they're on the same network, use different ports. What you got is an authentication conflict.
QUOTE=pisthai;751573]Don't use the same credentials on both machines. Also use different computer names and if they're on the same network, use different ports. What you got is an authentication conflict.[/QUOTE] In my Lan, there are computers with different names, they belong to the same Workgroup, each account has different credentials and there is only one computer that acts as a Telnet server. So, where am I wrong? In addition, I can not use the authentication via password for security reasons. Thanks Bye