DMZ, which stands for Demilitarized Zone, is an additional layer of security between the WAN and the LAN. A router with a DMZ subnet will allow access to the DMZ from the WAN while having the LAN still protected by the firewall. The most common application of DMZ is to allow servers such as mail servers, HTTP/HTTPS web servers and FTP servers, to provide service to the hosts on WAN.
Let’s talk Security … DMZs, VLANs, and L2 Attacks - VMware Jun 11, 2009 network - Why do people tell me not to use VLANs for If your VLAN is small then your exposure is huge, if your VLAN is big, then your exposure is mega-super-huge (I have customers whose whole corporate network is a huge VLAN, but that´s another issue). Then you have attacks to the stability of your LAN through the use and abuse of the Spanning Tree Protocol (yersinia is the de-facto tool for this). creating a DMZ Vlan on an E3800 - Hewlett Packard Re: creating a DMZ Vlan on an E3800 That's definitely something you want to do if you want to isolate DMZ traffic from internal traffic (which is the whole point :-). You may want to take some extra hardening steps as well, since much of the traffic in the DMZ will be "untrusted". Cisco ASA DMZ Configuration Example – IT Network
DMZ Basics - Cisco Blogs
If the switch is a layer3 switch, DONT assign an ip address to the DMZ vlan, and avoid the inside vlan having an IP Address if you can. Make sure these meet at a firewall. I still prefer to physically seperate, but do use vlans for the set of DMZ zones I have (I have 3 at the moment). Cisco ASA 5505 DMZ with Private VLAN Configuration DMZ Zone: Interfaces E0/2, E0/3 in VLAN 30; Notice that in DMZ we have 2 publicly accessible servers (Web and Email Server) that they both belong in the same Layer2 vlan (VLAN30) and the same Layer3 network subnet (10.0.0.0/24). If we don’t configure “Private Vlans”, then if the Web or Email server gets hacked, the attacker can access the
Configuring DMZ on the RV34x Series Router - Cisco
DMZ over VLAN to VM hosted on Internal network - problem Apr 11, 2019 Module 5: Demilitarized Zone (DMZ) - YouTube