sshd_config question

[Jeremy Chadwick]

On Mon, Jun 30, 2008 at 02:54:57AM +0000, Pollywog wrote:
> On Sunday 29 June 2008 23:55:25 Brandon S. Allbery KF8NH wrote:
> > On 2008 Jun 29, at 19:22, Jeff Richards wrote:
> > > After setting those options I kill -HUP the sshd  process.
> >
> > I thought sshd ignored SIGHUP and you had to actually stop and restart
> > it to pick up configuration changes.
> 
> IIRC, I use SIGHUP in OpenBSD but in FreeBSD, I use /etc/rc.d/sshd restart

According to the OpenSSH sshd manpage, it handles SIGHUP, and re-reads
the configuration file:

  sshd rereads its configuration file when it receives a hangup signal,
  SIGHUP, by executing itself with the name and options it was started
  with, e.g. /usr/sbin/sshd.

> I also have 
> 
> PubkeyAuthentication yes 
> 
> in my sshd_config but perhaps this is the default, I am unsure.

It is the default, in both sshd_config (server) and ssh_config (client).
See the sshd_config(5) and ssh_config(5) manpages.

> In some situations, I also need to edit ~/.ssh/config to allow the connection 
> and add 'PubkeyAuthentication yes' (on the host initiating the connection).

Possibly you have to do this on machines with an older OpenSSH; I don't
know if the default values were different then.

-- 
| Jeremy Chadwick                                jdc at parodius.com |
| Parodius Networking                       http://www.parodius.com/ |
| UNIX Systems Administrator                  Mountain View, CA, USA |
| Making life hard for others since 1977.              PGP: 4BD6C0CB |