Provide SSH to someone w/ dynamic IP address {Scanned}

[Volker Kindermann]

Hi,

> I'm willing to open up my box to a subnet xxx.xxx.xxx.0 but so far the range
> of ip addresses he is getting is so large, it will defeat the purpose to
> blocking ssh because I would have to open up to so many ranges. Is there any
> solution?

it might be necessary to open port 22 for all ip-addresses.

To lock it down, you may want to put the allowed ssh-users in a group (say ssh-users) and add "AllowGroups ssh-users" to your sshd_config.

Additionally you may want to disable password-login and allow only key-based login.

So your ssh should be sufficiently save.

 -volker