From: sivaran on

I just want to share my tricky problem we had today. We noticed users
not able to login to SQL plus or telnet from them box. Everything else
was working fine. You can ftp / login / rlogin etc. Nothing was
changed and no new software was installed. We rebooted the server that
did not help. Finally we found that it is a permission problem on
device file

crw-rw-rw- 1 root sys 42, 0 Jan 10 16:15 tcp@0:tcp

make sure you have read permission.

Thakns
Siva