Linux Services Organization

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IT Security: firewalls, proxys, IDS and security scaner linux server.

Linux enterprise services firewall linux server

Firewall with iptables

Iptables is a powerful firewall built into the linux kernel and is part of the netfilter open source project . It can be configured directly, or by using one of the many frontends and GUIs. Iptables is used for ipv4 and ip6tables is used for ipv6

Normally the code comes in the S.O. so no instalation is needed.

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Linux enterprise services proxy linux server

Proxy with squid

Squid is a proxy server and web cache daemon. It has a wide variety of uses, from speeding up a web server by caching repeated requests; to caching web, DNS and other computer network lookups for a group of people sharing network resources; to aiding security by filtering traffic.

The code is provided in RPM format so installation on linux server is trivial and no paid for license is required !!!

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Linux enterprise services snort linux server

Instrusion Detection System with snort

Snort open source network-based intrusion detection system (NIDS) has the ability to perform real-time traffic analysis and packet logging on Internet Protocol (IP) networks. Snort performs protocol analysis, content searching, and content matching. The program can also be used to detect probes or attacks, including, but not limited to, operating system fingerprinting attempts, common gateway interface, buffer overflows, server message block probes, and stealth port scans. The program can then perform a specific action based on what has been identified.

In 2009, Snort was named one of the greatest open source software of all time.

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Linux enterprise services nessus server

Security Scanner with nessus

The Nessus vulnerability scanner is the world-leader in active scanners, featuring high-speed discovery, configuration auditing, asset profiling, sensitive data discovery and vulnerability analysis of your security posture. Nessus scanners can be distributed throughout an entire enterprise, inside DMZs and across physically separate networks..

According to surveys done by, Nessus is the world's most popular vulnerability scanner, taking first place in the 2000, 2003, and 2006 security tools survey. It is used by over 75,000 organizations worldwide.

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