I'v been trying to connect to other machine(2 redhat7.3 and 1 winxp) by telnet.When I telnet from linux to linux or from windows to linux, it always say like Connected to 192.168.0.10 Escape charactor is '^]'. Connection closed by foreign host. I have no idea what that means. However telnet from linux to windows is just fine. allowed hosts are explicitly exist in the telnet file. Please help

Did you start the telnet daemon on Linux box? It will not let you log in if there is no running... Lawrence

Yes of course.

Even if you have started the telnet daemon, you still need to able it! If you are running RedHat Linux, check in /etc/rc.d. There should be a file called telnet and look at the content of that fill. You should probably figure it out yourself... Lawrence

Hi Lawrence. I think the file you are talking about is in /etc/xinetd.d (redhat uses xinetd) the content of telnet is service telnet { disable = no flags = REUSE socket_type = stream wait = no user = root server =/usr/sbin/in.telnetd log_on_failure += USERID only_from = 192.168.0.100 only_from = 192.168.0.99 } where first IP is windowsxp second IP is redhat on another machine Is something wrong wiht the content? thanks

Well, I don't see anything wrong with it but perhaps you want to install sshd instead which is more secure then telnet... You can download the latest version from www.openssh.com. But come to think of it, you should have a copy of sshd running on your RedHat BUT it is an older version where there is a secure problem. You can read more about it from their website. Lawrence