Tag: Transparent Firewalls

Transparent Firewalls

A firewall in terms of traditional network configurations serves as a default gateway for hosts connecting to one of its secured subnets. A transparent firewall acts like a “stealth firewall” and it is actually a Layer 2 firewall. In order to implement this, the connection of the security equipment is made to same network on both the internal and external ports. However, there is a separate VLAN for each interface.

Now let’s discuss the characteristics of transparent firewall mode:

  • Transparent firewall mode supports outside interface and an inside interface.
  • The best thing about transparent firewall mode is that it can run in both the single and multiple context modes.
  • Instead of routing table lookups the MAC lookups are performed.

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