I've generated my ssh key and uploaded it to my github account.

What I do was copy directly my id_rsa.pub to my github account. I've verified the key to my local key using ssh-add -l, it was the same.

Then I try to connect to github using the command: ssh -vT git@github.com I get the following messages:

OpenSSH_5.9p1 Debian-5ubuntu1, OpenSSL 1.0.1 14 Mar 2012

debug1: Reading configuration data /etc/ssh/ssh_config

debug1: /etc/ssh/ssh_config line 19: Applying options for *

debug1: Connecting to github.com [] port 22.

debug1: Connection established.

debug1: permanently_set_uid: 0/0

debug1: identity file /root/.ssh/id_rsa type -1

debug1: identity file /root/.ssh/id_rsa-cert type -1

debug1: identity file /root/.ssh/id_dsa type -1

debug1: identity file /root/.ssh/id_dsa-cert type -1

debug1: identity file /root/.ssh/id_ecdsa type -1

debug1: identity file /root/.ssh/id_ecdsa-cert type -1

debug1: Remote protocol version 2.0, remote software version OpenSSH_5.5p1 Debian-6+squeeze1+github12

debug1: match: OpenSSH_5.5p1 Debian-6+squeeze1+github12 pat OpenSSH*

debug1: Enabling compatibility mode for protocol 2.0

debug1: Local version string SSH-2.0-OpenSSH_5.9p1 Debian-5ubuntu1

debug1: SSH2_MSG_KEXINIT sent

debug1: SSH2_MSG_KEXINIT received

debug1: kex: server->client aes128-ctr hmac-md5 none

debug1: kex: client->server aes128-ctr hmac-md5 none

debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent

debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP

debug1: SSH2_MSG_KEX_DH_GEX_INIT sent

debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY

debug1: Server host key: RSA 16:27:ac:a5:76:28:2d:36:63:1b:56:4d:eb:df:a6:48

The authenticity of host 'github.com (' can't be established.

RSA key fingerprint is 16:27:ac:a5:76:28:2d:36:63:1b:56:4d:eb:df:a6:48.

Are you sure you want to continue connecting (yes/no)?

I pressed 'enter', then I got the message:

Host key verification failed.

Just for information, I've installed openssh-client. I never succeeded to connect before. Besides, in my .ssh folder, the file known_hosts was never automatically generated. Even if I create manually the empty file, it still doesn't work.

up vote 4 down vote accepted

You need to type "yes" when it asks you to verify the host key.

  • Thanks and sorry for making such a stupid mistake. However I got Permission denied (publickey) now... but I think I can try to search the answer :) – Y Wang Jul 2 '13 at 7:17

You have to generate an SSH key.

Follow these instructions:

Error: Permission Denied Publickey

  • Try to add the instructions to your post, it will help if links expire. – MoonSire Jul 6 '13 at 18:18

Your Answer


By clicking "Post Your Answer", you acknowledge that you have read our updated terms of service, privacy policy and cookie policy, and that your continued use of the website is subject to these policies.

Not the answer you're looking for? Browse other questions tagged or ask your own question.