February 5, 2016

General Router Commands

Network,

Router> User mode Router# Privilege mode Router(config)# Configuration mode Router(config-if)# Interface configuration mode

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January 8, 2016

Network Installation on Linux using NFS

Linux General,

Install dhcp,copy /usr/share/doc/dhcp-xxxx/dhcpd.conf.sample to /etc/dhcp/dhcpd.conf cp -r /usr/share/doc/dhcp-xxxx/dhcpd.conf.sample /etc/dhcp/dhcpd.conf

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September 23, 2015

Open VPN Server Configuration on Linux

Linux General,

Download openvpn-.rpm , And install using this command rpm -ivh openvpn-.rpm

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September 12, 2015

Networking Concepts, in RHEL 7 or CENTOS7.

Linux General,

We usually edit the network configuration file in the older versions to manage IPs. under /etc/sysconfig/network-scripts/

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August 26, 2015

Symbolic link hack and its prevention in cPanel based servers.

Linux General,

Just like we use shortcut in windows based operating system. Symbolic link (symlink or soft link) is a shortcut like file in linux operating systems. In linux a normal user cannot access server main/root directory. So, they use this symlink option as a tool to hack/gain access to server main/root directory. User will create a…

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August 14, 2015

DNS Configuration (Internal and External)

Linux General,

bind-9.8.2-0.17.rc1.el6_4.6.i686.rpm bind-chroot-9.8.2-0.17.rc1.el6_4.6.i686.rpm

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July 13, 2015

Routing Basics

Network,

Routers in a network discover remote networks in two ways Statically configured routes Dynamic routing protocols By default routers knows only the directly connected networks represented.

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July 8, 2015

Routers Basics

Network,

It is an internetworking component that connects networks at different geographical locations.It has

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July 1, 2015

Networking Basics

Network,

A network is any collection of independent computers(devices) which are connected to one another to share files and peripherals such as printers, modems, tape drives.

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June 18, 2015

Iperf

Linux General,

Iperf was developed by NLANR/DAST as a modern alternative for measuring maximum TCP and UDP bandwidth performance. Iperf allows the tuning of various parameters and UDP characteristics. Iperf reports bandwidth, delay jitter, datagram loss.

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