SSH

SSH is the most common FRP Auto Deploy service.

Local SSH on the client

Typical target:

Target host : 127.0.0.1
Target port : 22
SSH user    : existing-user

The SSH account and sshd must already exist. FRP Auto Deploy does not create users, passwords, keys, authorized_keys, or sshd_config.

After enrollment, the SSH service receives a persistent public port.

ssh -p <public-port> <ssh-user>@<server-public-IP>

With a public service hostname:

ssh -p <public-port> <ssh-user>@fw.example.com

The hostname is an access alias. It does not change CLIENT ID, Service ID, or the service-port reservation.

Example:

Target host : 10.10.20.30
Target port : 22
SSH user    : admin

The FRP client must already have normal network reachability to 10.10.20.30:22.

On the target/client:

ss -lntp | grep ':22'

On the client:

sudo frpctl show services
sudo frpctl show info
sudo frpctl doctor

On the server:

sudo frpctl show client <CLIENT-ID> services

Disable SSH when you want to stop publication temporarily but keep the public port.
Release when you intentionally want to return that port to the pool.

Last modified on September 7, 2026