Sabin Shrestha

Mr. Sabin Shrestha is a technology visionary and computer sysadmin, security specialist, Web Application, Website, Mobile developer, who thrives on solving complex problems. Sabin is an industry-recognized expert with over 20 years of hands-on experience in Nepal and Europe . His career is highlighted on starting and creating new companies, organizations and products. He loves creating new entities and discovering creative ways of solving complex problems. Sabin's primary love is sysadmin, cyber security; but, he understands in order to be successful at securing an organization, you must have a detailed understanding of OS, Programming, WAN LAN Networks and related fields. He is passionate about customer service and his role as a network, sysadmin, developer, security expert and always exceeds his clients' expectations. He is also the Founder of I.T. Experts Solution, Check International, Global Link Technology in Nepal.

Iptables Firewall

This How-To provides the details for securing a Linux gateway box with the IPTABLES firewall. This guide can be used for Kernels ranging from 2.4-2.6. Special rules for running Squid in transparent mode and providing Network Address Translation (NAT) are also covered in this guide. The tool IPTABLES talks to the kernel and tells it […]

Enterprise FreeBSD/Linux Squid Proxy Server

Squid is the most popular high end web proxy used by both by small or big organizations and ISPs around the world. It improves web browsing performance and conserves bandwidth. It also has a very rich Access Control Lists (ACLs) which can be configured to act as superb filter and can also act as a […]

Squid + FreeBSD + Cisco WCCP !!!

This How-To details the steps required to configure WCCP version 2 with a Cisco 3620 or 7206 router together with Squid-2.6.STABLE18 running on FreeBSD-6.2. Cisco’s WCCP (Web Cache Control Protocol) version 2 is used for sending web requests from clients to 1 or more Squid proxy servers. WCCP feature allows us to redirect Web traffic […]

ISP Setup in Nepal

There are over 300 communications satellites in the geostationary orbit, directly above the equator, spaced typically 2 or 3 degrees apart. Because they orbit the earth at the same speed and in the same direction as the earth rotates they remain fixed in the sky and we can use a fixed pointing Very Small Aperture […]

Network Management using Nagios

If you are reading this article, then you should be well aware that there are various and different types of network devices, servers, electronic gadgets, transport mediums, media converters, etc, which are somehow connected to each other to form the Internet. The internet is the biggest network in the world consisting of billions of computers, […]