Got published!

Hey!

Insecure Mag just published an article I wrote some time ago for them about MailScanner and server-side spam and virus filtering. You can read it in the new issue (1.5). Have fun, and... your comments are welcome!

Comments

Post a Comment

Popular posts from this blog

General linux performance troubleshooting

Here's a list of commands that you should execute and then share the output to someone who can help you figure out what resource is the bottleneck in your system. Note, it requires the  sysstat  and  procps  packages (ubuntu and RHEL and its derivatives): uptime vmstat 1 10 iostat -xN 2 10 mpstat -P ALL 3 10 pidstat 1 10 free -mw (or free -m, if your OS doesn't support -w)  uptime is to see the load averages on the system. vmstat is mostly used to tell if the system is swapping or not. If you see significant numbers in the 'si' and 'so' columns, your system is most likely swapping (using the hard drive as RAM), which usually slows performance a lot. iostat is mostly used to determine if your disk subsystem is not able to cope with the load. If you see one or more lines that shows 100 or close almost constantly, it is probably the case.  If it is your swap volume, you probably saw numbers in the 'si' and 'so' columns in the  vmsta
Read more

Asterisk works under OpenVZ (no zaptel)

Hi, Just to let you know that I did a basic test with asterisk on an OpenVZ VE and it works. We only tested SIP connectivity (it would probably be complex to have Zaptel support and I don't really need it). We were able to connect to a VoIP provider using SIP ( unlimitel ) and music on hold works. The only thing I had to change to make it work is to comment out this line in /usr/sbin/safe_asterisk: #TTY=9 # TTY (if you want one) for Asterisk to run on (I guess there is no TTY9 (console # 9) on openVZ since it is a virtual machine and TTY9 is usually a physical console (monitor)). I'll soon put my asterisk server in a VE, I'll let you know how it goes. I also use Unlimitel and ATAs to link my PSTN line and cordless phones.
Read more