Poll: Verifying ssh Fingerprint on EC2 Instances

By Eric Hammond on August 4, 2009 5:18 AM | 1 Comment

When you ssh to a new EC2 instance, you are presented with the challenge:

The authenticity of host 'XXX' can't be established.
RSA key fingerprint is YYY.
Are you sure you want to continue connecting (yes/no)?

For optimal security, you are supposed to request the instance console output and find the ssh host key fingerprint in the log to verify that it is the same as the fingerprint presented to you by the ssh command.

poll by twiigs.com

1 Comment

Eric Hammond | August 11, 2010 9:19 AM | Reply

Check out Scott Moser's article which describes how to verify the ssh host key fingerprint:

http://ubuntu-smoser.blogspot.com/2010/07/verify-ssh-keys-on-ec2-instances.html

Ubuntu Release	server 64-bit
Ubuntu 13.04 Raring EBS boot	`ami-c30360aa`
Ubuntu 13.04 Raring instance-store	`ami-c8ccaca1`
Ubuntu 13.04 Raring HVM (cluster compute)	`ami-c70360ae`

Ubuntu 12.10 Quantal EBS boot	`ami-0cdf4965`
Ubuntu 12.10 Quantal instance-store	`ami-b8d147d1`
Ubuntu 12.10 Quantal HVM (cluster compute)	`ami-02df496b`

Ubuntu 12.04 LTS Precise EBS boot	`ami-79c0ae10`
Ubuntu 12.04 LTS Precise instance-store	`ami-91c5abf8`
Ubuntu 12.04 LTS Precise HVM (cluster compute)	`ami-7bc0ae12`

Ubuntu 10.04 LTS Lucid EBS boot	`ami-21e47148`
Ubuntu 10.04 LTS Lucid instance-store	`ami-bffa6fd6`

Ubuntu Release	server 64-bit
Ubuntu 13.04 Raring EBS boot	`ami-d383af96`
Ubuntu 13.04 Raring instance-store	`ami-b28ba7f7`

Ubuntu 12.10 Quantal EBS boot	`ami-00b39045`
Ubuntu 12.10 Quantal instance-store	`ami-42b39007`

Ubuntu 12.04 LTS Precise EBS boot	`ami-69b59a2c`
Ubuntu 12.04 LTS Precise instance-store	`ami-b5b699f0`

Ubuntu 10.04 LTS Lucid EBS boot	`ami-e63013a3`
Ubuntu 10.04 LTS Lucid instance-store	`ami-30301375`

Ubuntu Release	server 64-bit
Ubuntu 13.04 Raring EBS boot	`ami-bf1d8a8f`
Ubuntu 13.04 Raring instance-store	`ami-9a1780aa`
Ubuntu 13.04 Raring HVM (cluster compute)	`ami-a11d8a91`

Ubuntu 12.10 Quantal EBS boot	`ami-a4b83294`
Ubuntu 12.10 Quantal instance-store	`ami-6ab8325a`
Ubuntu 12.10 Quantal HVM (cluster compute)	`ami-a6b83296`

Ubuntu 12.04 LTS Precise EBS boot	`ami-773caa47`
Ubuntu 12.04 LTS Precise instance-store	`ami-f33fa9c3`
Ubuntu 12.04 LTS Precise HVM (cluster compute)	`ami-793caa49`

Ubuntu 10.04 LTS Lucid EBS boot	`ami-6ec8425e`
Ubuntu 10.04 LTS Lucid instance-store	`ami-04c84234`

Ubuntu Release	server 64-bit
Ubuntu 13.04 Raring EBS boot	`ami-3d160149`
Ubuntu 13.04 Raring instance-store	`ami-12796e66`
Ubuntu 13.04 Raring HVM (cluster compute)	`ami-3f16014b`

Ubuntu 12.10 Quantal EBS boot	`ami-64636a10`
Ubuntu 12.10 Quantal instance-store	`ami-5a60692e`
Ubuntu 12.10 Quantal HVM (cluster compute)	`ami-66636a12`

Ubuntu 12.04 LTS Precise EBS boot	`ami-7b62730f`
Ubuntu 12.04 LTS Precise instance-store	`ami-7b63720f`
Ubuntu 12.04 LTS Precise HVM (cluster compute)	`ami-65627311`

Ubuntu 10.04 LTS Lucid EBS boot	`ami-ca1a14be`
Ubuntu 10.04 LTS Lucid instance-store	`ami-881d13fc`

Ubuntu Release	server 64-bit
Ubuntu 13.04 Raring EBS boot	`ami-6b26ab6a`
Ubuntu 13.04 Raring instance-store	`ami-5a2da05b`

Ubuntu 12.10 Quantal EBS boot	`ami-875fdb86`
Ubuntu 12.10 Quantal instance-store	`ami-4d5fdb4c`

Ubuntu 12.04 LTS Precise EBS boot	`ami-7d43cd7c`
Ubuntu 12.04 LTS Precise instance-store	`ami-a547c9a4`

Ubuntu 10.04 LTS Lucid EBS boot	`ami-0366e302`
Ubuntu 10.04 LTS Lucid instance-store	`ami-b567e2b4`

Ubuntu Release	server 64-bit
Ubuntu 13.04 Raring EBS boot	`ami-2b511e79`
Ubuntu 13.04 Raring instance-store	`ami-f55619a7`

Ubuntu 12.10 Quantal EBS boot	`ami-10206d42`
Ubuntu 12.10 Quantal instance-store	`ami-76206d24`

Ubuntu 12.04 LTS Precise EBS boot	`ami-e40846b6`
Ubuntu 12.04 LTS Precise instance-store	`ami-fa0846a8`

Ubuntu 10.04 LTS Lucid EBS boot	`ami-42e1a310`
Ubuntu 10.04 LTS Lucid instance-store	`ami-52e1a300`

Ubuntu Release	server 64-bit
Ubuntu 13.04 Raring EBS boot	`ami-84a333be`
Ubuntu 13.04 Raring instance-store	`ami-0ea03034`

Ubuntu 12.10 Quantal EBS boot	`ami-046cfa3e`
Ubuntu 12.10 Quantal instance-store	`ami-006cfa3a`

Ubuntu 12.04 LTS Precise EBS boot	`ami-b30e9e89`
Ubuntu 12.04 LTS Precise instance-store	`ami-bb0e9e81`

Ubuntu 10.04 LTS Lucid EBS boot	`ami-eebd2bd4`
Ubuntu 10.04 LTS Lucid instance-store	`ami-eabd2bd0`

Ubuntu Release	server 64-bit
Ubuntu 13.04 Raring EBS boot	`ami-28e43e35`
Ubuntu 13.04 Raring instance-store	`ami-cae03ad7`

Ubuntu 12.10 Quantal EBS boot	`ami-9bb96286`
Ubuntu 12.10 Quantal instance-store	`ami-6db96270`

Ubuntu 12.04 LTS Precise EBS boot	`ami-0c76ac11`
Ubuntu 12.04 LTS Precise instance-store	`ami-e071abfd`

Ubuntu 10.04 LTS Lucid EBS boot	`ami-2f6ab232`
Ubuntu 10.04 LTS Lucid instance-store	`ami-016ab21c`

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Poll: Verifying ssh Fingerprint on EC2 Instances

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