We are runnig a system on CentOS 4.5 where we use a testing ERP system. Users have to login to it with telnet. When it reches about 60 telnet users, the remaing users will NOT be able to login.

Hardware is , HP Pentium 4 Server with 4 Gb RAM .

Pls Note we used the same system on a lower Machine with Redhat EL 3 until yesterday. But , it worked fine. @ that time, more than 100 users logined with telnet.

Now, only it gves such error even when we have better Hardware and Software.

Any ideas?

What does the client see that can not log in via telnet? What does /var/log/messages say when additional users attempt to log in?