Understanding Dual-Homed Host Firewall Implementation
In my previous article, I have talked about the different types of firewalls that you should know about the different types of firewalls in network security. In this article, I want to talk about Dual-home firewall security in network security. Follow me as we look at that together in this article.
A Dual-Homed host firewall is a firewall running on a server with at least two network interfaces. Most firewall today are implemented in actual routers, rather than servers. The server acts as a router between the network and the interfaces to which it is attached.
To make this work, the automatic routing function is disabled, meaning that an IP packet from the internet is not routed directly to the network The administrator can choose what packet to route and how to route them. Systems inside and outside the firewall can communicate with the dual-homed host, but cannot communicate directly with each other.
The Dual-Home host configuration is simply an extension of the network host firewall implementation. That means it is also dependent on the security of the underlying operating system. Anytime a firewall is running on a server of any kind, the security of that server operating system becomes even more critical than normal.
The option has the advantage of being relatively simple and inexpensive. The primary disadvantage is its dependency on the underlying operating system.
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