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.

Configuring Cisco DSL Routers

This is a simple guide on how to set up your Cisco DSL router for DHCP using PPPoE. The examples in this chapter also show how to configure NAT so you can also have a home / SOHO based website. This page should be suitable for the following Cisco routers:   With Built In DSL […]

Linux Syslog with cisco

syslog syslog is a utility for tracking and logging all manner of system messages from the merely informational to the extremely critical. Each system message sent to the syslog server has two descriptive labels associated with it that makes the message easier to handle: The first describes the function (facility) of the application that generated […]

Openfiler High Availability NAS Server

  https://project.openfiler.com/repository/openfiler/trunk/doc/cluster_guide/openfiler-ha.html 1. Introduction With the release of Openfiler 1.1, there is now preliminary support for creating a high-availability replicated storage solution that can function both at a LAN and WAN level. The replication is one-to-one replication not one-to-many with the primary live server copying each individual data block written to local disk, to a remote […]

Oracle ora 24242 error

http://broersa.wordpress.com/ exec dbms_network_acl_admin.create_acl(acl => ‘resolve.xml’,description => ‘resolve acl’, principal => ‘ABACUS’, is_grant => true, privilege => ‘resolve’); exec dbms_network_acl_admin.assign_acl(acl => ‘resolve.xml’, host => ‘*’); select utl_inaddr.get_host_name(‘116.90.226.210’) from dual; select utl_inaddr.get_host_name(‘mail.abacusnepal.com’) from dual; select utl_inaddr.get_host_name(‘127.0.0.1’) from dual; http://www.liberidu.com/blog/?p=246 DECLARE acl_path VARCHAR2(4000); BEGIN SELECT acl INTO acl_path FROM dba_network_acls WHERE host = ‘host_name’ AND lower_port IS NULL […]

Switching from RHEL 5-server to CentOS 5-everything

It is not hard to switch to CenOS5, just install a couple of rpm packages and your done, but you really do not have to switch. It is possible to add the CentOS repos to your yum configuration. Sample /etc/yum.repos.d/ CentOS5.repo (sample name) file below; [CentOS5 base] name=CentOS-5-Base mirrorlist=http://mirrorlist.centos.org/?release=5&arch=$basearch&repo=os #baseurl=http://mirror.centos.org/centos/$releasever/os/$basearch/ gpgcheck=0 enabled=0 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-5 [CentOS5 updates] […]