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Category:Firewall

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A '''firewall''' is a [[gateway]] device which sits between networks and examines the traffic wanting to pass through it, and makes decisions about whether to allow, deny, log, [[NAT]], and/or otherwise fiddle with that traffic on a packet-by-packet basis by consulting a ruleset it's been programmed with.
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A '''firewall''' is a software application that runs on a Freebsd system acting as a gateway to the public internet that examines the traffic wanting to pass through it making  decisions about whether to allow, deny, log, NAT, and/or otherwise fiddle with the traffic on a packet-by-packet basis by consulting a ruleset it's been programmed with.
  
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The main purpose of most firewalls is to protect an internal network from malicious traffic inbound from the outside network(s), but they can also be used to monitor and/or control outbound traffic. In particular, in work-related environments it can be useful to deny outbound traffic on ports used for non-work-related peer-to-peer file-sharing networks; and to deny and log outbound traffic that is characteristic of malware-related activity.
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The main purpose of firewalls is to protect an internal network from malicious traffic inbound from public networks. They can monitor and/or control both inbound and outbound traffic. In particular, in work related environments it can be useful to deny outbound traffic on ports used for non-work-related peer-to-peer file-sharing networks; and to deny and log outbound traffic that is characteristic of malware-related activity.
  
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Under FreeBSD, three kernel firewalls are available; [[ipfw]] (FreeBSD-based), [[pf]] (OpenBSD-originated, ported to FreeBSD), and [[ipf]] (OS-agnostic). [[ipfw]] and [[ipf]] will work as [[modules]] but if you're going to be running them at all, you'll probably want to recompile your kernel for static support -- see [[Firewall, Configuring]], below.
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FreeBSD has three firewall soultions available, they are; [ipfw] (FreeBSD-maintained), [pf] (OpenBSD-originated, ported to FreeBSD), and [ipf] (OS-agnostic, ipfilter ported to FreeBSD).  
  
 
If you want your article to appear in this category, append <nowiki>[[Category:Firewall]]</nowiki> to its end.
 
If you want your article to appear in this category, append <nowiki>[[Category:Firewall]]</nowiki> to its end.

Revision as of 13:29, 13 August 2012

A firewall is a software application that runs on a Freebsd system acting as a gateway to the public internet that examines the traffic wanting to pass through it making decisions about whether to allow, deny, log, NAT, and/or otherwise fiddle with the traffic on a packet-by-packet basis by consulting a ruleset it's been programmed with.

The main purpose of firewalls is to protect an internal network from malicious traffic inbound from public networks. They can monitor and/or control both inbound and outbound traffic. In particular, in work related environments it can be useful to deny outbound traffic on ports used for non-work-related peer-to-peer file-sharing networks; and to deny and log outbound traffic that is characteristic of malware-related activity.

FreeBSD has three firewall soultions available, they are; [ipfw] (FreeBSD-maintained), [pf] (OpenBSD-originated, ported to FreeBSD), and [ipf] (OS-agnostic, ipfilter ported to FreeBSD).

If you want your article to appear in this category, append [[Category:Firewall]] to its end.

Pages in category "Firewall"

The following 6 pages are in this category, out of 6 total.

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