Difference between revisions of "Iptables"
From Teknologisk videncenter
m (New page: iptables is a packet filtering, NAT/PAT and packet mangling tool for Linux. Used by a variety of Linux distributions including Ubuntu, Redhat and CentOS. Iptables is highly configurabl...) |
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*input : Packets from a Interface to a local process on the machine. A packet from outside to the machine. | *input : Packets from a Interface to a local process on the machine. A packet from outside to the machine. | ||
*output : Packets from a local process - the machine itself - to the outside world. | *output : Packets from a local process - the machine itself - to the outside world. | ||
| − | [[Image:Iptables chains.png|300px|thumb| | + | [[Image:Iptables chains.png|300px|thumb|left|iptables flowchart showing chains]] |
Revision as of 15:21, 7 March 2009
iptables is a packet filtering, NAT/PAT and packet mangling tool for Linux. Used by a variety of Linux distributions including Ubuntu, Redhat and CentOS. Iptables is highly configurable and are used in many firewall solutions.
Using IPTABLES
Iptables is a commandline command with numerous options, and need some training to master. Basically iptables has three chain.s
- forward: Packets traversing from one Interface to another Interface
- input : Packets from a Interface to a local process on the machine. A packet from outside to the machine.
- output : Packets from a local process - the machine itself - to the outside world.
