Megamon Tech Blog

IT issues resolved

Browsing Posts in Linux

Here is how you enable 802.x tagging on your Centos host cat /etc/sysconfig/network-scripts/ifcfg-vlan100 VLAN=yes VLAN_NAME_TYPE=VLAN_PLUS_VID_NO_PAD DEVICE=vlan100 PHYSDEV=eth5 BOOTPROTO=static ONBOOT=yes TYPE=Ethernet IPADDR=192.168.200.254 NETMASK=255.255.255.0

The example shows group dialing on the inbound number, to 2 SIP clients as well as a Cisco VoIP handset. Where 12345678 is your mynetfone account number. extensions.conf: [myfone-inbound] exten => 12345678,1,Dial(SIP/6666,30) exten => 12345678,2,Congestion exten => 12345678,102,Busy [default] exten => 12345678,1,Dial(SIP/6666&SIP/6667&SCCP/6668,30) exten => 12345678,2,Congestion exten => 12345678,102,Busy sip.conf: [mynetphone-out] disallow=all allow=ulaw allow=alaw authname=12345678 canreinvite=no [...]

I recently installed Zimbra. Very impressed with the system having migrated my postfix+courier+spamassasin+clamav solution to it. However I have found that out of the box it lets a lot of spam through. I had been forwarding spam emails to my spam training account for a week but the X-Spam-Status headers didn’t show the BAYES_xx numbers [...]

I recently setup a few virtual machines under ESX 4 and found that the Centos hosts were running inĀ  between 300 and 400 mhZ where as the Windows 2k3 and even the Ubuntu hosts were running at approx 70-100 mHz idle. I learnt that it’s got to do with the frequency of the interupts changing [...]