hi
In the past I've used FTP & WinSCP clients to connect to the Linxux www server. What other technologies should I look at for increased security and preventing transfer of unencrypted password.

I may add an SSL certificate for membership access also.

Thanks

It depends on what the "clients" are doing.

hi chris, the users are purely using http://www and maybe https://www in the future. is that what you meant? thanks

Why do they need "secure" access then?

there's not a strong need but its inexpensive to add this additional security. this question is about admin access to the server. thanks

admin access to do WHAT though.

SSL may be enough if you are using a control panel.
SSH may be a neccessity.

We can't second guess what your requirements are.

SSH is a good start.
Make sure IP tables is locked down to the IP addresses that will use SSH.

Also, Rather than basic SSH you could use keys. Ie: they have a private jey, your server has a public key. and without his / hers private key they cant login ( even if the username and password are right )

It just adds an extra level of protection.

A bit over the top for most. But i find it natural now.

Thanks for the suggestion I will investigate the SSH & lock down of IP Table, they sound like good possibilities, and the extra level of protection I was seeking.