Can't remember your home IP address? Dynamic DNS let you down? Fret not! Look
for the last known host key in ~/.ssh/known_hosts, determine your ISP's AS
number, run
./sshd-finder <partial key fingerprint> <as number>
and wait.
usage: sshd-finder [-e] [-p port] [-k key_algo] fingerprint as_number
Scan ISP's IPv4 address space for an SSH server whose hostkey matches
a given host key fingerprint.
Options:
-e, --exec-ks use ssh-keyscan. sshds are still searched with sshd-finder
but actual key fetching is delegated to ssh-keyscan,
which does it more realiably than the simple key exchange
logic used in sshd-finder itself. another benefit is
support for wider range of kex algorithms and SSH
protocol versions.
-p, --port= port to scan (default: 22)
-k, --key-algo= host key algorithm (no effect with -e, --exec-ks).
allowed values:
"ecdsa" for ecdsa-sha2-nistp256 (default)
"ed25519" for ssh-ed25519
"rsa" for ssh-rsa
Arguments:
fingerprint complete or partial host key fingerprint
as_number ASN for the ISP whose network the sshd is on