I use Redhat ES 4.0 on my server
I run a small business with 12 users
I am the only one who uses remote access
I been having lately an exessive number of Brute-Force attacks and am concerned about security.
My router is set up to allow only ssh protocol
router is also set up to bar access while I am not online. meaning: server is only vulnerable while I am accessing it remotely.
I am looking to limit remote ssh access to one user-id
and restrict remote session to only one at at a time
Meaning:: do not allow a a second remote ssh login session while one is in progress
Is alternative practical?
Any other alternatives?
Will also consider a commercial solution..
Your help is appreciated