Tales from our World

Here a script I found that generates various passwords.

I found this command a long time ago, and I forgot where. But, I wanted to share it with everyone. It will tell you what IP addresses are connected to your web server, and how many connections there are.

netstat -ant | grep \:80 | awk '{ print $5 }' | awk -F \: '{ print $1 }' | sort | uniq -c | sort -n


Note: Again, I don’t remember where I found this, and you are the author please let me know and I will link it back to you.

If you are using CentOS 5 and enable FTP and when your users try to FTP in, they get the following error:

500 OOPS: cannot change directory:/home/their_directory

The problem isn’t with FTP (as I first thought), the issue is actually with SELinux.

To fix, edit the file: /etc/selinux/config

Look for the line that says:

SELINUX=enforcing


and change it to:

SELINUX=disabled

There are lots of reports of issues with CentOS 5 and the newest Nvidia chipset. The biggest one that I have found is the network settings are forgotten on each reboot. So, if you set your machine with a static IP only to find when you reboot the machine switches to DHCP mode, then here’s a simple and easy way to fix (note: the proper fix would be to recompile the network card drivers, however this is a bit time consuming).

The simple fix is to turn off Kudzu. From the command line type:

chkconfig --levels 345 kudzu off