Beyond LFS OpenSSH Issue

Jon Wilder · 04-24-2020, 10:29 PM

I just finished a LFS Systemd build on a Raspberry Pi. Following Beyond LFS OpenSSH installation, I built with PAM support (I've already installed PAM and rebuild Shadow, plus set "UsePAM" in /etc/ssh/sshd_config to yes).

From PiLFS, I can ssh into other machines. However, I'm having an issue ssh'ing into the LFS machine. Using PuTTY, I ssh to the Pi. It asks for my login name.

As soon as I enter my login name, I get "Remote side unexpectedly closed the connection".

Has anyone had this issue before?

TheRealGrogan · 04-25-2020, 02:30 PM

As a matter of fact I did have that exact same problem. I didn't realize it right away, because I seldom ssh into this box. When I noticed, I recompiled it and it worked after that. I don't follow the BLFS procedure and compiled openssh as one of the first things after getting LFS booting. I think it's because I didn't use --with-md5-passwords. I don't use PAM (hate it).

I compiled mine like this (change yours to --with-pam):

Code:

./configure --prefix=/usr --sysconfdir=/etc/ssh --with-md5-passwords --without-pam --with-privsep-user=sshd --with-privsep-path=/var/lib/sshd --with-libedit

You did remember to create the user and group, sshd?

P.S. It could have also been the version of openssh that didn't compile right. When I recompiled it, there was a newer one, openssh 8.2p1 and I used that.