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Computing

Adding a USB backup drive to SBS backup

Add a new disk to the backup schedule by running the wbadmin command from an elevated command prompt. Run the following command from an elevated command prompt to determine the Disk Identifier of the new disk: wbadmin get disks Based on the output, locate the disk that will be added to the scheduled backup. Make […]

Change Centos IP address

In common situation, “system ip address” is the ETH0 address. So edit /etc/sysconfig/network-scripts/ifcfg-eth0 with your favourite text editor and run service network restart ps don’t forget to change default gw also, it’s located in /etc/sysconfig/network.

Routerboard SNTP Client

How to set the NTP client on a Mikrotik router using the Terminal /system ntp client set enabled=yes primary-ntp=###.###.###.### secondary-ntp=###.###.###.### Change the ### for IP address’s Once done use the below to check if the settings has been applied /system ntp client print Below are two IP addresess for NTP servers that I use, they […]

What version of Centos is my server running?

This post shows how to find out what version of Centos you are running from the command line. tail /etc/redhat-release This will output the version in a simple format: Centos release 5.10 (Final)  

Remove a folder in Linux

This is the command to remove a folder/directory including its contents, use with caution as you wont get an “are you sure” prompt rm -rf example In the above example it would delete a folder/directory called example. Just change that to your folder/directory name. The below code will do the same as above, but you […]

Zyxel P660 – Removing secured web IP

If you have locked down the web management port to 1 IP address and you need to access it from a different IP you can telnet to the router and using the below commands remove the secured Ip address allowing access from the web gui from any IP. sys server load sys server secureip web […]

Draytek 2860 Port 443 / SSL not working port forward

There seems to be a bug in the Draytek 2860 router, even though I had changed the management ports from the default 80 and 443 to 8080 and 8080. I was still unable to port forward any 443 traffic and would end up getting an 404 error page from the Draytek 2860. The next thing […]

TCPDUMP to sniff headers

This tcpdump command will grab the first 1024 bytes (vs. smaller 68 or so) and line buffer the output for all packets using port 80 (http) tcpdump -s 1024 -l -A port 80