0
votes
1answer
146 views

How do I specify the key exchange method in OpenSSH?

I'm trying to understand how OpenSSH decides what key exchange method to use. What I don't see is how to specify the method. In addition, I know every ssh server/client is required to support at least ...
4
votes
2answers
3k views

Configure OSX Firewall to Allow SSH Server?

If I turn on my OSX firewall, ssh is disallowed. If I turn it off, ssh can connect just fine. These are the settings from the ssh host: while I don't know what I'm doing, I figured that giving ...
1
vote
2answers
235 views

Change OpenSSH account password in Linux

I suppose that my main Linux user account password serves as my SSH password as well. Is there a way I can modify this? As it turns out, I'd like to have a REALLY secure SSH password for obvious ...
8
votes
1answer
6k views

Denyhosts keeps adding my IP address to hosts.deny

I have setup Denyhosts to run on my server, and have been using it succesfully for the last few weeks, to allow me to ssh into my server from my home dev machine. This morning, I accidentally typed ...
5
votes
4answers
19k views

Can someone explain the 'PasswordAuthentication' in the /etc/ssh/sshd_config file?

On this page, the explanation given is: The option PasswordAuthentication specifies whether we should use password-based authentication. For strong security, this option must always be set ...
1
vote
2answers
1k views

A failed login lockout system for ssh on Ubuntu that actually works?

Currently, my ssh server lets a user fail to login an infinite number of times (theoretically until the password is correctly guessed). I do not want this to be the case, I want the user to be banned ...
9
votes
9answers
18k views

How do I skip the “known_host” question the first time I connect to a machine via SSH with public/private keys? [duplicate]

How do I skip the "known_host" question the first time I connect to a machine via SSH with public/private keys?