I can connect from every other computer on the LAN, as well as externally. It connects fine to other machines running SSHD. When trying ssh with verbosity, I get the following readout:
$ ssh -vvv 192.168.1.9 OpenSSH_6.2p2, OpenSSL 1.0.1e 11 Feb 2013 debug2: ssh_connect: needpriv 0 debug1: Connecting to 192.168.1.9 [192.168.1.9] port 22. debug1: Connection established. debug1: identity file /home/Steven/.ssh/id_rsa type -1 debug1: identity file /home/Steven/.ssh/id_rsa-cert type -1 debug3: Incorrect RSA1 identifier debug3: Could not load "/home/Steven/.ssh/id_dsa" as a RSA1 public key debug1: identity file /home/Steven/.ssh/id_dsa type 2 debug1: identity file /home/Steven/.ssh/id_dsa-cert type -1 debug1: identity file /home/Steven/.ssh/id_ecdsa type -1 debug1: identity file /home/Steven/.ssh/id_ecdsa-cert type -1 debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_6.2 ssh_exchange_identification: read: Connection reset by peer
Any idea what I might have messed up? I don't recall changing in the SSH config files, only adding some users to groups to experiment with permissions. Even when I try not specifying an account (as above) it still hangs at "Local version string SSH-2.0-OpenSSH_6.2" for a minute before giving the final error. I'm running Ubuntu Server 12.04 x86, for what it's worth.