Adding the IP Address in Redhat Enterprise Linux can be done by using the netconfig tool or by editing the network-scripts or by using the ifconfig command. While this procedure is tested on Redhat Enterprise Linux, I'm sure it should work on CentOS, Fedora and older Redhat versions.
Tag: Linux
Internet Junk Buster – Free Opensource Non-caching proxy for online privacy
Internet Junk Buster is a free Opensource Non-Caching proxy for personal use on your PC or server system for company networks or even ISPs. Internet Junk buster is a privacy-enhancing proxy that blocks ads and banners that you wish you never want to see on websites. Blocking these ADs and banners on the website diretly improves the performance on the access to the site.
Internet Junk Buster runs on most of the Linux and Unix systems including Sun Solaris and HP-UX and Windows platforms. There is a seperate installer package available for Windows.
How to set MTU size for a Network Interface in Redhat Enterprise Linux(RHEL)
The Maximum Transmission Unit (MTU) can be set/modified in real time on Redhat Enterprise Linux or can be set force the value at boot time.
The MTU in simple terms is the maximum size of a packet that can be sent on a Network Interface card. The default MTU size is 1500 bytes.
Endian Firewall – IPCop based Opensource Linux Firewall
Endian Firewall is an Opensource Linux Firewall based on the IPCop Linux Firewall, a very popular Opensource firewall. Endian Firewall is almost an opensource Universal threat Management (UTM) device with a Stateful firewall, VPN, Webproxy, SIP proxy for VoIP, Web Security, Content Filtering, Mail gateway and Antivirus, Anti-spyware and Anti-phishing capabilities.
How to Disable ICMP Redirects in Linux for security (Redhat,Debian,Ubuntu,SuSe tested)
ICMP Redirects Send and Accept are by default enabled on most of the linux flavours including Debian, Ubuntu, Redhat Enterprise Linux, Suse Linux.
ARPing – Ping using Address Resolution Protocol(ARP)
ARPing is an utility that can be used to ping using ARP requests instead of using ICMP as used in standard Ping utility.
Because it involves ARP, arping is limited to the local network to which the server or the interface (if more than one interface) is connected to. ARPing can be quite useful to
- Check if an IP Address is already in use before assigning to another device
- Duplicate address detection
- Update neighbors ARP cache
Firewall Builder – Multiplatform Firewall Configuration Manager
Firewall Builder is an Opensource multi-vendor Firewall Configuration and Management GUI tool. It uses a set of policy compilers for the different firewalls supported. If you are a Network administrator supporting multiple sites and multiple firewall devices then you would know what difference a central Firewall Manager can make to the day to day task. A Netscreen Security Manager for Junipers or the admin tool for checkpoints is an example, despite these being expensive commercial options from the very own vendors. Firewall Builder on the other hand a hetrogenous, vendor neutral configuration and management tool with support to more than one single platform and an easy design allowing expanding support more platforms.
Firewall Builder uses object-oriented approach, it helps administrator maintain a database of network objects and allows policy editing using simple drag-and-drop operations. Firewall Builder can generate configuration file for any supported target firewall platform from the same policy created in its GUI. This provides for both consistent policy management solution for heterogeneous environments and possible migration path.