Re: [SSHGuard-users] Auth error ignored by sshguard

[Daniel A. <co...@da...>]

On Sun, Jan 22, 2017, at 11:53, li...@la... wrote:
> >From FreeBsd auth.log:
> ----------------------------------
> Jan 22 04:16:13 theranch sshd[48754]: fatal: Unable to negotiate with
> 198.50.142.115 port 57860: no matching key exchange method found. Their
> offer: diffie-hellman-group1-sha1 [pre auth]
> ---------------------
> I suppose this is an odd case for an ssh login attempt, but I figured
> I'd post it for what it is worth. Sshguard didn't block the IP. Now I
> suppose you can say if the key exchange method isn't supported, they
> will never get it, but it seems to me that could leave the system open
> to some exploit.

Hm. Wouldn’t that potentially block some legitimate clients that are
trying to negotiate a connection?

> I'm still on rev 1.7. 
> 
> IP is  OVH. Oh, I'm shocked. ;-)
-- 
Daniel Aleksandersen