Archive for the ‘security’ Category

About errors setting up SASL/StartTLS in Postfix under Ubuntu

Sunday, August 29th, 2010

In the process of setting up SASL and StartTLS under Postfix, I got this in the log:

“warning: SASL authentication failure: cannot connect to saslauthd server: No such file or directory”

It took me some minutes to figure out what was wrong. Obviously it has to do with postfix not being able to connect to the saslauthd server. The question is just, why? I went with a hunch of permissions … and wasted some time, so if you get the error, here is what solved it for me. In

/etc/default/saslauthd

You have to remove the default line and let saslauthd create its file under the postfix dirstructure. That is

> OPTIONS="-c -m /var/spool/postfix/var/run/saslauthd
< OPTIONS="-c -m /var/run/saslauthd"

And then

/etc/init.d/postfix restart

Not rocket science, but I chased a wild goose looking at permissions for 15 minutes before figuring out what was wrong.

Posted in Linux, Mobile Phone, Unix, security | No Comments »

Firewall in an ZynOS based xDSL router (ie. zyxel P660R-D1)

Tuesday, April 13th, 2010

I recently got xDSL from one of the major danish ISPs. I was very satisfied until I discovered that port 80 was closed. I looked high and low for a solution. Eventually I gave up and contacted the support, which confirmed my suspicion: the router had an firewall which blocked port 80.

The solution is actually quite straight forward:

wan node index 1
wan node filter incoming tcpip 256 256 256 256
wan node filter outgoing tcpip 256 256 256 256
wan node save

And now my blog is accessible for the outside world again.

Posted in Hardware Projects, security | No Comments »

Upgrade of wordpress engine

Sunday, June 1st, 2008

Due to some script-kiddie hacking my aging wordpress (2.0.4) installation I decided to upgrade wordpress on zensonic.dk. At the same time I also hardneded the security a bit. Luckily the intruder only gained access to the apache user resulting in him/her being able to do very very little. He managed to send a couple of spam mails though. I have to live the rest of my life knowing that I probably helped a stupid person fool an even more stupid person by selling him some viagra pills. I think I will manage the burden.

Posted in security | No Comments »