Works On

Viewing:

Ubuntu 20.04 LTS (Focal Fossa)

Same on:

Other versions:

Ubuntu 18.04 LTS (Bionic Beaver) Ubuntu 22.04 LTS (Jammy Jellyfish) Ubuntu 24.04 LTS (Noble Numbat) Debian 10 (Buster) Debian 11 (Bullseye) Debian 12 (Bookworm) Debian 13 (Trixie) Debian 9 (Stretch)

Details

Size: 1 lines
MD5: 6210c4fb07117e7c5c395d5df44b8f84
SHA256: c282d17bfb8bfbbdc2702cd29a54dc4865542b52724e7fcc87a6a7407e615582

/etc/ssh/ssh_host_rsa_key.pub

ssh-rsa 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 root@f227fa9875ed

Copy & Paste

curl:

curl https://exampleconfig.com/api/v1/config/original/6210c4fb07117e7c5c395d5df44b8f84?hint=ssh_host_rsa_key.pub

wget:

wget -O ssh_host_rsa_key.pub https://exampleconfig.com/api/v1/config/original/6210c4fb07117e7c5c395d5df44b8f84?hint=ssh_host_rsa_key.pub

For AI Agents

<prompt><role>DevOps agent</role><source url='https://exampleconfig.com/api/v1/config/original/6210c4fb07117e7c5c395d5df44b8f84?hint=ssh_host_rsa_key.pub' /><config><app>OpenSSH</app><os>Ubuntu 20.04 LTS (Focal Fossa)</os><location>/etc/ssh/ssh_host_rsa_key.pub</location><lines>1</lines><md5>6210c4fb07117e7c5c395d5df44b8f84</md5><sha256>c282d17bfb8bfbbdc2702cd29a54dc4865542b52724e7fcc87a6a7407e615582</sha256></config></prompt>

Paste into Claude, ChatGPT, or any AI assistant.

Install OpenSSH

Alpine Linux

sudo apk add openssh-server

Debian

sudo apt update && sudo apt install openssh-server

Red Hat Enterprise Linux

sudo yum install openssh-server

Ubuntu

sudo apt update && sudo apt install openssh-server

File Location

File Path

/etc/ssh/ssh_host_rsa_key.pub

FAQ

When should I use this ssh_host_rsa_key.pub?

Use it to restore a missing default, confirm what shipped, or diff against your current OpenSSH config.

How do I restore OpenSSH defaults?

Download the file, back up the current one in /etc/ssh/ssh_host_rsa_key.pub, replace it, then reload or restart OpenSSH.

Is ssh_host_rsa_key.pub safe for production?

It is the vendor default for Ubuntu 20.04 LTS (Focal Fossa). Treat it as a baseline and review security and performance settings before production use.

How does this differ from other OS versions?

Defaults vary by distro and version. This copy matches Ubuntu 20.04 LTS (Focal Fossa).

Can I use this for OpenSSH troubleshooting?

Yes. Diff it against yours to find drift, then restore only the sections you need.

OpenSSH /etc/ssh/ssh_host_rsa_key.pub