Saving SSH options for specific host

prego 5 Kommentare

Who doesn’t know that problem. You are working on a bunch of different hosts via ssh, and on all of them you need specific SSH Options. On the first the port differs, on the second you need to login with a different user than you are connected right now, on the third you need X-Forwarding and on the fourth you want to redirect a remote port to a local one. I knew that it is possible to save host-specific options in a ssh config file, but I never got arround to take a look at it. Now I found exactly that question – and the answer – in the popular german computer magazine CT. The file is

~/.ssh/config

The structure is rather simple. You specify a connectionname via

Host CONNECTIONNAME

and the belonging host via

HostName HOSTNAME

After that you can specify any options you want to for the connection (see man ssh_config). You can do it for as many hosts as you want. I just set it up and it is just to cool how much time it saves not to type all the stuff all the time.

Example:

Host stiffmaster
HostName 192.168.6.112
User prego
Port 33
LocalForward 6312 localhost:631
ForwardX11 yes

Now you just type ssh stiffmaster instead of ssh -X -L 6312:localhost:631 -p 33 prego@192.168.6.112. Isn’t that cool?? :-)

Improoving spamassassin

prego 2 Kommentare

I’ve got a mailserver running that fetches mails from different accounts via fetchmail, scans them for viruses using clamav, filters for SPAM using spamassassin and then deliveres it to the mailbox and sorts them via procmail. Now Spamassassin just filtered arround 35-40% of all SPAM I recieved. My local.cf includes

use_bayes 1
bayes_auto_learn 1
bayes_auto_lern_threshold_nonspam 1
bayes_auto_lern_threshold_spam 14.00
bayes_ignore_header X-Spam-Flag
bayes_ignore_header X-Spam-Status
In order to recognize more SPAM i created a folder SPAM in my Mailbox and moved all SPAM I recieved into it. Now simply change to that folder and run a sa-learn –spam –progress * there, as well as a sa-learn –ham –progress * in your inbox and voila… SPAM-recognition by spamassassin starts improoving very fast :-)

(Thanks Diederik for the hint)

Mal wieder…

prego Schreib einen Kommentar

Lange nichts mehr gebloggt… Heute mal kurz, wir haben gewonnen, sehr hoch, aber irgendwie kann man sich ueber die Tore gar nicht so richtig freuen… Des Weiteren gibt es zu berichten, dass ich Krank bin, Bin derbst erkaeltet u hab Kopfschmerzen u ich HASSE es krank zu sein, erwaehnte ich es schonmal??

Ach so, finde es immer wieder faszinierend… Hab am 8. Juli das Akismet-Plugin zu Comment und Trackback SPAM auf meinem Blog installiert. Dieses Plugin hat mir seitdem 557 SPAM Posts blockiert… finde ich ne ganz schoen krasse zahl!