In computer security, a DMZ (demilitarized zone) is a physical or logical sub-network that contains and exposes services to a larger untrusted network (usually the Internet).

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I am not able to connect my software with my public IP

please help me in port forwarding. i m stuck in the middle. suppose my local ip is - 192.168.0.103 and public ip is - 49.248.xx.xxx I have D-link DSL-2520U ADSL2+ modem router so here is what i do, i ...
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28 views

pfSENSE: Can't ping dmz gateway from inside dmz

I currently have a virtual pfSense machine with 3 interfaces (WAN: 172.16.xx, LAN 10.1.0.x, OPT1(DMZ) 10.1.1.x) I currently have no explicit rules, besides allow any to any on all interfaces. Internet ...
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11 views

NTP not getting through even to DMZ

My home router seems to be blocking UDP 123. sudo ntpdate -u time.apple.com works as expected, but sudo ntpdate time.apple.com I get: "no server suitable for synchronization found" I can get a ...
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1answer
42 views

Two playstations on one network

In my house I have 2 playstations. My wife and I both play together. On all sort of games but mostly on call of duty. Recently we have been playing Black Ops 3 and have been having problems. We have ...
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7 views

Manipulate a network with virtual machines

How can I make this network with virtual machines? I know that I need next things: ESXi DMZ Debian Firewalls Apache server But how can I do this? Can I download an iso file whit ESXi like you ...
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2answers
81 views

Do I need to port forward if I'm using a DMZ?

It seems like if I set a computer up as a DMZ to host, say, a Minecraft server, then I'd still need to port forward. Otherwise how will the router know which local computer to send them to when they ...
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15 views

DMZ not working

I have a Dlink DSL-2750U and a static IP. When I try opening the static IP from a browser it takes me to the router configuration page. I have a Local Server in the same network with the local IP ...
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41 views

How to put a KVM/libvirt guest in dmz?

I have my network based on a router running ipFire. A host server on debian wheezy is running libvirt/KVM to host several guests. Those are connected to the private network (192.168.2.0 "green") via ...
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49 views

Most secure: Port Forwarding Vs DMZ for SOHO scenario

In a small office / home office (SOHO) scenario, I would like to configure the ADSL router for a small http server installation - actually an experiment with a Raspberry Pi, working as an http server. ...
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24 views

Loopback NAT not working for DMZ host

Since last year, my ISP basically forced me to use their all-in-one cable modem/wireless router instead of a standalone cable modem. I already had my own router (Netgear R7000) and as a result I'm ...
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39 views

Squid reverse proxy, DMZ, how to forward any non-http request

I'm actually facing an issue with some network-protocol related problem. I have my own domain, a owned DMZ, and externals users. In my DMZ, I have a reverse proxy who handle HTTP connection very ...
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2answers
106 views

Double NATing Issues and DMZ Solution?

I just wanted to put this out there to make sure I am understanding everything correctly around double NATs in an apartment building and if my solution is sound. So I just moved to an apartment ...
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1answer
39 views

Port 80 forward on home router

I have a generic Linux home router. I can change iptables on it by telnet to console. Currently, it is set up to forward all incoming connections to machine on my internal network, using something ...
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1answer
42 views

Router behind the switch (DMZ)

I am new to the world of networking and am having a hard time to solve this issue. I want to access my server from outside by configuring the server IP in DMZ host but it is not giving me access from ...
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1answer
63 views

I think my ISP is blocking acsess to my server outside my network [closed]

My friend gave me a nice desktop computer. I decided to install Ubuntu server and use it as a server. I have a ssh server, web server,minecraft server, and sometimes a team speak server running on it. ...
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1answer
123 views

DMZ Host on a router stopped working

I have a U.S. Robotics router, on which there is a DMZ Host configured. DMZ Host's IP is 192.168.1.115, which is the IP of a machine I would like to open to the Internet. This machine is connected ...
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1answer
59 views

Several Routers and DMZ, WAN, Local LAN

I previously had: A PS3 directly connected to the router given to me by my ISP (Router A). I had the console in a DMZ on this router at IP 192.168.1.33 So I had enabled UPnP for this router and ...
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174 views

Several Routers and DMZ, WAN, Local LAN

I previously had: A PS3 directly connected to the router given to me by my ISP (Router A). I had the console in a DMZ on this router at IP 192.168.1.33 So I had enabled UPnP for this router and ...
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68 views

My DMZ Host on the router is not working

I am using DLink 2750u router to connect to the internet. I have connected my RaspBerry Pi to the router and set up the DMZ Host on the router. I configured ddclient on my Pi and it is working fine to ...
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1answer
77 views

Open Port for home server on router

I want to access home web server from internet. At last I could do by enabling my DMZ and pointing host to Local IP. My router configuration does not show up port forwarding. But I understand that ...
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94 views

Why can't my second router (in DMZ) automatically find DNS settings?

I'm trying to set up my own router after the ATT modem/router combo. There is no bridge mode to bypass the ATT router. So I set up the DMZ to point to my personal router and wasn't able to get any ...
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166 views

Public IP address port forwarding goes to my router's homepage and not my laptop’s server

I am trying to turn my laptop into an internal server to be accessed from anyone on the Internet. But whenever someone types my public IP address into their URL bar it sends them to my router’s config ...
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2answers
288 views

How do routers avoid port clashes when DMZ and NAT are used?

NAT in consumer routers makes the router translate a request from an internal device on a private IP (say dev0) and a specific source port X to a request from it's own public IP at a different source ...
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29 views

DMZ on a different router

Is it possible to set a second router as a DMZ host? Or is it much simpler to set my webserver as the DMZ host? I'm using two routers on my network and these routers are on different subnets. My ...
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2k views

Setting up a server behind Comcast Modem + Airport Time Capsule

I'm trying to set up port forwarding for a server behind an Airport Time Capsule that's behind a Comcast Arris modem. I'm trying to avoid changing the Arris modem to bridge mode, and instead using DMZ ...
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57 views

Grabbing DHCP from DMZ?

Is it possible to grab DHCP from the DMZ of a router above? Essentially i want to have a setup like this. DMZ DHCP ------> Router (master router) | | ...
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2answers
379 views

Router serving as DMZ host at the same time

My Linksys EA6700 wireless router supports DMZ. To configure DMZ I need to specify a DMZ host. As far as I understand, the DMZ host is a server which can be accessed from the Internet. As I have a ...
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34 views

Connecting to a computer inside a network [duplicate]

I have a network in my College which is connected to the internet. How can I access a system inside this network from the internet (WAN)? I don't have access to the gateway of the system, so port ...
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4k views

Asus router RT-N56U unnecessarily opens extra ports for a DMZ device

My Asus RT-N56U router (latest firmware 3.0.0.4.374_979) opens port UDP 3659 for a Playstation 3 which is already in DMZ. The DMZ was set up properly with a static IP assigned to the PS3 and the ...
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1answer
191 views

SSH to a computer in a DMZ

So here is a rough sketch of what my network currently looks like: From the .2 machine I would like to SSH into my .6 machine, however I am not even able to ping it. This all worked when I was on ...
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746 views

Cisco ASA 5520 as a home router

I have a Cisco ASA 5520 that I recently acquired from work that I am planning to use as my home router. I also have a Linksys E4200 router and a Linksys WRT610N router, both dual-band, that I would ...
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7k views

Samba - Access shares from internet

I've added my computer to my router's DMZ so all opened ports are accessible from the internet. I have a couple of Samba shares that currently have public read permission. I want all other computers ...
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998 views

DMZ forwarding on Cisco DPC/EPC2100 Cable Modem to Linksys Router for IP Cameras

I have one of the old Cisco DPC/EPC2100 Cable Modems and wanted to know if anyone has had any luck setting up DMZ on it? Link to modem: http://www.cisco.com/web/consumer/support/modem_DPC2100.html ...
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317 views

Hosting my website (IIS) 2 routers & a VMware VM involved - how to setup?

I have a modem-router from my ISP (in UK) this is a Technicolor TG582n, and a D-Link DIR-615 router. These are connected via cable, cable ends in the 'Internet' port of D-Link. I connect via Wi-Fi to ...
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1k views

Can't access DMZ host via public IP within LAN

Recently I replaced my old router with the Linksys E4200V2. I have a personal server, which is a DMZ host in my home network. I can access the server via the public IP of the router, since DMZ is set. ...
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1answer
2k views

How to setup DMZ in router with DD-WRT firmware?

I have a router d-link dir-300, flashed to dd-wrt v24. By the unknwon reasons web interface not working. Spawning in console httpd, didnt help. Now I need a DMZ ip. How I can setup it with standard ...
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1answer
472 views

Working with VLANS

So I recently bought a HP ProCurve (managed) switch to start messing around with VLAN's in a lab environment at home. I have a basic VLAN configured, two machines connected to the VLAN on 192.168.1.10 ...
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3answers
2k views

Trying to chain 4 routers together.. possible?

I have comcast 50mb internet and 3 other routers that I am trying to connect throughout my duplex house. I am running 50 ft cat5 cables to them throughout the house and have them powered on and ...
2
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1answer
691 views

DMZ server with a public IP

So, I'd like to run a L4D2 game server on a VM. Partially for playing and partially for training. This is a simple residential network with a DSL modem and a E4200 router (for now). The router uses ...
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1answer
3k views

SSH (sftp) Server - DMZ or Port Forwarding?

I run an SSH server on my main machine. What are the security risks here, and advantages/disadvantages to port forwarding or a DMZ? Also, is there a way to tunnel an SSH server without making changes ...
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398 views

Enabling DMZ for opening ports

I earlier asked this question. There, my problem was that I port forwarded certain ports and turned off Windows Firewall, but still, online port checkers showed that those ports were closed. So, I ...
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5answers
5k views

Why do I see router and not my real IIS?

I am trying to access IIS through web but unable to do so. Basically I have a router (which functions as router and modem) that is given by ISP and I have another router connected to the router given ...
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2answers
1k views

How is an Exchange server supposed to be seen on the perimeter network?

I have done a lot of research and I think I am on a good track, finally. I have been searching for days. I am not even sure if this is a good forum to ask this question, but all the other forums I ...
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1answer
1k views

Creating a DMZ with two routers

Hopefully it's okay to post semi-"I am learning" questions on this forum! Basically, I have two routers (both Netgear D834G's) and would like to setup a DMZ at home (merely for learning purposes and ...
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1answer
3k views

Allow access from outside network with dmz and iptables

I'm having a problem with my home network. So my setup is like this: In my Router (using Ubuntu desktop v11.04), I installed squid proxy as my transparent proxy. So I would like to use dyndns ...
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1answer
3k views

Why does my DD-WRT not accept SSH connections from my laptop?

So, here is my system: I have a 2Wire AT&T modem/router which I use for wireless and a Buffalo router flashed with DD-WRT which is physically attached to the 2Wire and set in the DMZ. I set ...
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2answers
6k views

External ping fails on Linksys router

When I try to ping my server from somewhere other than my local network, if finds the host, but returns as a lost packet. Screenshot from http://tools.pingdom.com: http://cl.ly/1I1c3K0z3Y1I2c3x3R3Z ...
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1answer
1k views

How can I make my livebox route to my external IP address for a computer in the DMZ?

I have a sagem livebox 2 (Fiber optic model), and have placed my computer in a DMZ. People from outside of my network can access my comp fine via its external dyndns.org address, yet when I try to ...
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1answer
673 views

Sharing folders on LAN with a DMZ computer on same tier (in DMZ)

This is my current setup, tiers in order; Modem Linksys wireless router D-Link wired router - wired desktop 1 - wireless laptop Wired DMZ desktop 2 Modem is connected to the linksys wireless ...
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2answers
2k views

Routing from the DMZ to the interior network only

I have a home network connected to Verizon's FIOS service. Verizon's ActionTec router is connected to the ONT via coax to establish the MOCA network. My DD-WRT router's WAN port is connected to one ...