IPFire 2.11 Core 64 Free Download

 
Michael Tremer has announced the release of IPFire 2.11 Core 64, a specialist firewall distribution, with updated intrusion detection software and fixed MAC rules: "Today, we are releasing the 64th Core Update for IPFire 2.11. The Intrusion Detection program Snort has been updated to version 2.9.3.1, the corresponding daq library to version 1.1.1. This enables Snort to work with the latest VRT rule set. Outgoing firewall - the broken MAC rules have been fixed. It was impossible to use the MAC rules to allow hosts to access the Internet. A bigger rewrite of the code fixes this problem and makes the outgoing firewall a bit more performing. Minor bugs and feature enhancements: update accelerator - the path to the delete icon has been fixed; pakfire can now use the XZ compression.

Download: ipfire-2.11.i586-full-core64.iso

Protecting Against Intruders with Security- Firewall

As an administrator in today’s world of networked computing and easy access to the Internet, security both internally and externally must be the first and last issue considered. Denying unauthorized access is the first step to keeping your system secure. The mechanism to prevent access to all or some network services on a system is called a firewall.

Every operating system allows for the implementation of a firewall differently. Red Hat Enterprise Linux uses IPTables, a network packet-filtering mechanism in the Linux kernel. IPTables can be used to allow or deny packets based on numerous factors including their destination, their source, which port they are trying to access, the user ID of the process that created the packet, and more.

Install the iptables RPM package to use IPTables. It includes utilities to configure which packets to filter. The IPTables configuration consists of a series of rules. Each rule must be for a specific table, with each table having its own set of chains. A chain is a list of rules, which are compared to the packets passed through the chain. If a set of packets matches a chain, the target of the rule tells the system what to do with the packets, including passing it along to a different chain.

This section discusses how to write and enable IPTables rules. It also discusses the Red Hat Enterprise Linux security levels, which are predefined sets of IPTables rules. They can be used to quickly implement a basic firewall.

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