Enable 1:1 NAT in Iptables Rumi, April 17, 2015 1:1 NAT maps a single Public IP Address to one of your computer within your local area network (LAN). Unlike port forwarding, 1:1 NAT forwards all ports from one external IP to one internal IP. iptables -t nat -A POSTROUTING -o eth0 -s 192.168.1.2 -j SNAT –to-source 83.229.64.2 iptables -t… Continue Reading
How to enable Port Forwarding in Iptables Rumi, April 17, 2015 Port forwarding allows remote computers, for example, computers on the Internet, to connect to a specific computer or service within a private local area network (LAN). Typical applications include the following: Running a public HTTP server within a private LAN Permitting Secure Shell access to a host on the private… Continue Reading
7 Inspiring Steve Jobs Quotes That Just Might Change Your Life Rumi, March 23, 2015 He came, he saw, he conquered…and he left behind some words to live by: “I’m convinced that about half of what separates successful entrepreneurs from the non-successful ones is pure perseverance.” Everyone says they go the extra mile. Almost no one actually does. Most people who do go there think,… Continue Reading
NFS Server and Client on Debian 6/7 Rumi, March 13, 2015 Assumptions: NFS Server IP: 172.16.5.100 NFS Client Node1: 172.16.5.101 NFS Client Node2: 172.16.5.102 NFS Client Node3: 172.16.5.103 NFS Client Node4: 172.16.5.104 On the NFS Server: Install nfs-kernel-server Install nfs-kernel-server and nfs-common Install nfs-common on the computer that has the files to be shared. apt-get update && sudo apt-get install nfs-kernel-server nfs-common Edit the exports… Continue Reading
Install and configure fail2ban Rumi, January 4, 2015 Servers do not exist in isolation, and those servers with only the most basic SSH configuration can be vulnerable to brute force attacks. fail2ban provides a way to automatically protect the server from malicious signs. The program works by scanning through log files and reacting to offending actions such as… Continue Reading
rkhunter perfect configuration Rumi, January 4, 2015January 4, 2015 Introduction Exposing any computer to the internet is in some ways risky. There are many ways that your server can be compromised or attacked by remote systems and malicious software, and it is an ongoing and proactive process to defend yourself against potential threats. One potential concern is rootkits. Rootkits… Continue Reading
Reset Zpanel Zadmin Password Rumi, December 25, 2014April 25, 2017 It’s a silly though, after updated from webGUI zpanel’s dashboard, the updated password wasn’t just working!!! So had to google a while and found the answer- keeping it for future reference- setzadmin -set password Note: In “password” area type “your new password” That’s it! Continue Reading
Add EPEL Repo to CentOS or SL 6 Rumi, November 24, 2014February 4, 2024 For 64 Bit rpm –import http://fedoraproject.org/static/0608B895.txt wget http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm rpm -ivh epel-release-6-8.noarch.rpm For 32 Bit rpm –import http://fedoraproject.org/static/0608B895.txt wget http://dl.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm rpm -ivh epel-release-6-8.noarch.rpm Additional Add Remi Repo rpm –import http://rpms.famillecollet.com/RPM-GPG-KEY-remi rpm -ivh http://rpms.famillecollet.com/enterprise/remi-release-6.rpm yum install yum-priorities Edit /etc/yum.repos.d/epel.repo… vi /etc/yum.repos.d/epel.repo Update: Feb-04-2024 Enable the EPEL Repository on CentOS 6.x, RHEL 6.x,… Continue Reading
Open Sourced Load Balancer Rumi, October 30, 2014 Linux Virtual Server The Linux Virtual Server Project is a project to cluster many real servers together into a highly available, high-performance virtual server. The LVS load balancer handles connections from clients and passes them on the the real servers (so-called Layer 4 switching) and can virtualize almost any TCP… Continue Reading
How to find my mobile number MSISDN Rumi, October 28, 2014 A local tidbits, but quite useful when I’m lost to find a SIM MSISDN Following are the hidden codes: Grameenphone= *2# Banglalink: *511# Robi= *140*2*4# Airtel= *121*6*3# Continue Reading