I have already covered basic configuration for Squid Here I am trying to cover few advance configuration for Squid, which can make day to day life easier. Assuming, My employer has multiple offices connected using P2P LL, all this offices has dedicated ISP for web use. In case of failure of ISP link, I can [...]
Full Story »Openfire with Audio / Video Chat support
The only reason why I could not block yahoo / gtalk on my network was because of voice / video chat option. Redfire plugin for openfire can be used for audio / video chat. Follow below given procedure to enable openfire voice / video chat. Plugin installation on Openfire server download & install plugin in [...]
Full Story »Ubuntu Takes long to auth SSH Server
Many of you must have faced slow ssh auth in Ubuntu or any other linux client. To eliminate delay you may change following in /etc/ssh/ssh_config. from #GSSAPIAuthentication yes to #GSSAPIAuthentication no GSSAPI (Generic Security Service Application Programming Interface) is a function interface that provides security services for applications in a mechanism-independent way. [...]
Full Story »Save Power using Wake On Lan
Apart from Virtulization we can shut servers whenever it is not being used to save power. At my office, we used to keep Antivirus server running 24×7, to get latest definition updates & to let users fetch. This was not necessary to keep server ON whole night as there was no user. Also we had [...]
Full Story »Recover Ubuntu & Win7 – after upgrading from XP
If you are using Ubuntu & XP dual boot, & if at all you are planing to upgrade / have upgraded to Win7, this post may be helpful for you. When you upgrade to Win7, due to Win’s unsocial behaviour to coexists with other OS, grub boot loader is lost. Here we assume, when you [...]
Full Story »Wpad file for Multiple Networks
WPAD.DAT Many of us use proxy configuration file to automate proxy configuration for users. It is easy to configure wpad.dat for single network, but for some reason if you wish to use same wpad.dat file for multiple networks following might help you. function FindProxyForURL(url, host) { if (shExpMatch(url, “http://localhost*”)) { return “DIRECT”; } if (shExpMatch(url, [...]
Full Story »Apache Web using POP3 Auth
One fine day one the project leader asked that he we to share files over internet to employees, he was looking for some auth system where only existing employee can login. Since we have hosted mail server & no auth system in office the convenient way we found was to use POP3 Auth. Following is [...]
Full Story »Resize LVM -Centos
Here We are sharing guide to resize LVM size. create new partition (partition id should be 8e Linux LVM) ADD PHYSICAL VOLUME pvcreate /dev/new_partition Verify new physical volume pvdisplay Or pvscan Extend existing VOLUME GROUP vgextend VolGroup00 /dev/xvda3 make sure vg free size is = new partition size using vgdisplay command Extend existing LVM by [...]
Full Story »Easiest way for Interface Bonding – CentOS
There is preferred way of bonding using ifcfg- files. But I prefer following method as it is very easy to setup. Here I am using 192.168.3.2 for the bond0. eth0 & eth1 are used for bonding. We’ll enter following lines in /etc/rc.local modprobe bonding mode=balance-rr miimon=100 ifconfig bond0 192.168.3.2 netmask 255.255.255.0 up ifenslave bond0 eth0 [...]
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Install & Configure GlusterFS -CentOS / RHEL