[OpenIndiana-discuss] Who is trying to break in ?

[Till Wegmüller]

Brogyányi József schrieb am Sunday 28 June 2015 11.01:55:

> /The last was strange a little bit because he wanted to switch of the 
> server. I think you have to change the 21 and 22 communication port.
> I use the 443 port for ssh. I can reach the server easily from anywhere 
> because every company left it open that port.

I Advise Strongly against using a different port for SSH. Especially a port like 443 which by default is used by apache and other webservers. Some Webservers might refuse to launch depending on their configuration.

> I've noticed some text output before shutting down the system.
> It seems someone ( or bots ) are constantly trying to log in as root.

Yea there are some Chinese Bot nets that scan for open SSH Ports and try to log in with root. I have them on every SSH capable server which is Internet reachable. They don't only scan 22 but also 666 or 1337. But they only make tries with weak default passwords like 12345. 

If you want to block them I suggest the Tool fail2ban. I use it on my Linux boxes and it works like a charm. There also seems to be a Port for snv_134 https://github.com/jamesstout/fail2ban-0.8.4-OpenSolaris but I haven't tested that.

Greetings Till