Server & Network Security Setups

If you are looking to build a security capability into your existing IT infrastructure such as,

  • Installing SSL certicates
  • Applying Security Patches and Updates to your server.
  • Tightening up user permissions.
  • Implementing Access Control on your server
  • Conguring Authentication
  • Deploying File Integrity solutions
  • Deploying Network/Web/Host Firewall/li>
  • Deploying Intrusion Detection/Prevention System (IDS/IPS)
  • Deploying Network/Host based Antivirus and Antimalware
  • Implementing Unified Threat Management (UTM) System
  • Implementing Network Access Control (NAC) Systems
  • Conguring VPN between locations.
  • Creating Dematerialized Zones in your data center and many more….

Let sysmoth’s certied & professional security sta handle this for you, providing you complete end-to-end service.


Netfilter is a framework that provides hook handling within the Linux kernel for intercepting and manipulating network packets. Put more concretely, Netfilter is invoked, for example, by the packet reception and send routines from/to network interfaces. As the master Netfilter function is called with a packet, Netfilter runs through the list of registered hooks and calls the extensions in succession, which then handle packets as they desire. The term Netfilter is also used to refer to the Free Software project that aims to provide firewalling tools for GNU/Linux.

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IPCop is a Linux distribution which aims to provide a simple-to-manage firewall appliance based on PC hardware. IPCop is a stateful firewall built on the Linux netfilter framework.

Originally a fork of the SmoothWall Linux firewall, the projects are developed independently, and have now diverged significantly.

IPCop includes a simple, user managed update mechanism to install security updates when required.

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Snort is a free and open source network intrusion prevention system (NIPS) and network intrusion detection system (NIDS), created by Martin Roesch in 1998.[3] Snort is now developed by Sourcefire, of which Roesch is the founder and CTO. In 2009, Snort entered InfoWorld’s Open Source Hall of Fame as one of the “greatest pieces of open source software of all time”.

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ModSecurity supplies an array of request filtering and other security features to the Apache HTTP Server. ModSecurity is a web application layer firewall.

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Untangle is a privately held company based in Sunnyvale, California. The company provides a multi-function firewall for small & medium businesses, schools, and non-profit organizations. Untangle provides applications installed at the edge of a network. Over 2 million people in 30,000 organizations worldwide are protected by Untangle.

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pfSense is an open source firewall/router distribution based on FreeBSD. pfSense is meant to be installed on a personal computer and is noted for its reliability and offering features often only found in expensive commercial firewalls. It can be configured and upgraded through a web-based interface, and requires no knowledge of the underlying FreeBSD system to manage. pfSense is commonly deployed as a Perimeter Firewall, router, wireless access point, DHCP server, DNS server, and as a VPN endpoint.

The name was derived from the fact that it helps make the OpenBSD packet-filtering tool pf make more sense to non-technical users.

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Shorewall (more appropriately the Shoreline Firewall) is an open source firewall tool for Linux that builds upon the Netfilter (iptables/ipchains) system built into the Linux kernel, making it easier to manage more complex configuration schemes.

Using an analogy understandable to programmers: Shorewall is to iptables, what C is to assembly language. It provides a higher level of abstraction for describing rules using text files.

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OpenVPN is an open source software application that implements virtual private network (VPN) techniques for creating secure point-to-point or site-to-site connections in routed or bridged configurations and remote access facilities. It uses a custom security protocol that utilizes SSL/TLS for key exchange. It is capable of traversing network address translators (NATs) and firewalls. It was written by James Yonan and is published under the GNU General Public License (GPL).

OpenVPN allows peers to authenticate each other using a pre-shared secret key, certificates, or username/password. When used in a multiclient-server configuration, it allows the server to release an authentication certificate for every client, using signature and Certificate authority. It uses the OpenSSL encryption library extensively, as well as the SSLv3/TLSv1 protocol, and contains many security and control features.

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Network Access Control (NAC)

Network Access Control (NAC) is an approach to computer network security that attempts to unify endpoint security technology (such as antivirus, host intrusion prevention, and vulnerability assessment), user or system authentication and network security enforcement.

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