wget https://cdn.openbsd.org/pub/OpenBSD/OpenSSH/portable/openssh-9.9p2.tar.gz sha1sum openssh-9.9p2.tar.gz # edefe960645780dee78059c444d4261667ad3056 tar xzf openssh-9.9p2.tar.gz cd openssh-9.9p2/ mkdir /usr/legacy/ ./configure --enable-dsa-keys --prefix=/usr/legacy time nice make make install
host node3
hostname x.x.x.x
kexalgorithms diffie-hellman-group1-sha1,diffie-hellman-group14-sha1
ciphers aes256-ctr,aes192-ctr,aes128-ctr
hostkeyalgorithms +ssh-dss
identityfile ~/.ssh/id_...
user administrator
and call that with
/usr/legacy/bin/ssh node3
note you will have to comment out the hostkeyalgorithms line while using the normal ssh client
https://www.openssh.org/releasenotes.html