Network Address Translation, a technology used to translate a private IP address into a public IP.

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How to create 2 NAT network types in VMware Workstation 9?

I have a virtual domain network using the VMnet8 (NAT) adapter which simply consists of 2 VM; Windows Server 2012 and Windows 8.I have disabled the DHCP service from the VMnet8 setting due to WIndows ...
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1answer
71 views

Why from a virtualized Ubuntu system I can't discover the ip address of my router?

I am not into computer network and I have the following problem finding my router IP address. I have a Windows 8 PC on on which it is installed VmWare Workstation that virtualizes Linux Ubuntu. The ...
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1answer
50 views

How can I specify which network to use for internet connection and which for viewing network computers

I have two Network Adapters on Windows 7 64 bit operating system which is installed on Oracle Virtual Box. I created those two adapters as follows: NAT VirtualBox Host-Only Ethernet Adapter If I ...
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1answer
309 views

How can I bypass my modem with NAT to open my ports to the outside?

My Internet provider gave me a Modem-Router with WiFi capabilities but it has all ports filtered for incoming traffic. What I'm trying to do is to use NAT in someway that allows me to recieve incoming ...
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1answer
57 views

Connect to internet through two gateways

I am developing a library to perform port forwarding in NAT devices. Using SSDP (de discovery process) I can see two different UPnP servers that implement WANIPConnection service type, one is my ADSL ...
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1answer
317 views

Where to place a port-mirroring switch for home network monitoring

I want to start monitoring traffic that goes in and out of my home network. I'd like to collect information like bandwidth usage and (specifically) HTTP requests from home computers to websites. From ...
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51 views

Setting up a web server behind a ZTE NAT

I have developed a web app in Java using netbeans and running on a glassfish server attached to netbeans. I would like to show this to some people but I can't get it running across the web. It works ...
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2answers
195 views

How can i find the ISP IP allocated to my Router?

I am using Router to connect to internet. How can i find the ip address allocated to my router by isp in windows 7? I cant use whatismyip.com since it will give shared ip if i am behind a CGN.
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202 views

How to expose local loopback to (VirtualBox) VM connecting to host via NAT (VirtualBox NatNetwork)

I'm using the VirtualBox NatNetwork type to connect most of my VMs to the host (with the required ports set up for forwarding). I'd like to know how I can connect to the local loopback ("localhost") ...
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2answers
42 views

Port based routing, 1 public mapped to multiple private ips

Simply put, I want this single public ip mapped into different private ip's based on port 111.1.1.1:80 -> 192.168.1.1:80 111.1.1.1:443 -> 192.168.1.2:443 is this a standard and possible?
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41 views

ADSL device providing No NAT DMZ alongside NAT (IPv4)

I have an ADSL modem/router/switch which performs NAT. It does this even for the one host it can be configured to provide a DMZ. I want to be able to perform Nmap scans from a specific host and there ...
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36 views

A lot of random NAT tables appear

My brothers Mac seems to be infected. It keeps on sending UDP and SYN floods to our router, and it multiplies my ping 10 times.When I look in the NAT Mapping table there are a lot of random address ...
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37 views

How do I, on a Ubuntu Server acting as a NAT, forward all requests for a subnet to a VPN?

I have an Ubuntu server handing out IP addresses in the 10.1.2.x range acting as a NAT. It is connected to a VPN, and has the IP address 172.16.1.250 from it. How do I have it forward any requests ...
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1answer
3k views

Fedora 20 NAT Configuration with firewalld

I'm trying to set up a simple masquerading gateway that will bridge between an internal network on ens33 (192.168.1.0/24) and a private network on ens37 (10.0.1.0/24). It's a VMWare image with two ...
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2answers
156 views

cisco wireless router not allowing full tcp handshake when in router mode

I have a recently-purchased cisco rv220w wireless router. My setup is as follows: Internet -> asa 5505 -> 10.0.1.0 subnet -> wireless router (subnet 10.0.3.0, public facing ip is ...
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0answers
41 views

Xbox to Sonicwall TZ180 [closed]

First, not sure if this is the right place to post this. I have a Xbox 360 hooked up to a SonicWall TZ180. The SonicWall is then connected to my TP-Link router which is downstairs. When I play games ...
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1answer
119 views

Implementing a direct TCP link between computers hidden by a router with a server managing the connection

I'm working on an encrypted chat program and I'm trying to work out a way of sending messages directly between two computers which are hidden by a router (each have their own local IP address and are ...
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144 views

Running Hyper-V Manager behind NAT

I am running Hyper-V Manager on a Windows 8.1 box behind a router (actually a VMware Fusion VM). When I try to connect to my Hyper-V box, I get an error RPC server unavailable. Unable to establish ...
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18 views

would NAT router work behind a NAPT router

If I put a NAPT router behind the NAT router which is at the border of my company enterprise network, can the hosts behind my NAPT router access to the external network. Thank yopu for your response. ...
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83 views

How to setup private network using 2 routers with the following setup, one with ddwrt: internet modem > router > router?

I just purchased a DDWRT router with ddwrt v24 installed. Now I have a regular netgear router (R6300) that is connected to an internet cable modem. Internet Cable Modem > Netgear Router > DDWRT ...
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1answer
219 views

IPv6 only LAN with NAT64 router for Internet

I want to disable IPv4 on my LAN and run only IPv6. I will use a NAT64 Juniper firewall to provide Internet access since I only have IPv4 Internet. Will this break applications? Will I be able to ...
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73 views

How to share folders b/n VirtualBox and Win 7 using NAT adapter and Samba

When I had my Adapter set to Host Only I followed this tutorial and was able to view the folder # \samba\share\ only buy typing \\192.168.55.444 in my windows start up. So, this means I could share ...
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1answer
2k views

Accessing VirtualBox with NAT adapter using SSH

I have a CentOs 6.5 running on a VirtualBox. I am using NAT adapter and my inet addr is 10.0.2.15 But, I can't access this host using ssh root@10.0.2.15 I get ssh: connect to host 10.0.2.15 port 22: ...
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30 views

Modem not assigning DNS

I have a ZyXEL P-870H-51A V2 VDSL2 modem. Currently, the modem connects to the internet, but computers require to use a static DNS in order to use it, otherwise they fail to reach a DNS lookup. ...
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1answer
510 views

How to forward ports through ssh and nat to another machine

I have a problem when using ssh port forwarding and nat simoultaneously. Situation: Machine A runs a webserver on port 8080 Machine B is a raspberry pi which works like a little router. It has two ...
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70 views

Use rtpproxy as a NAT on openIMSCore

I have some problems, I want to ask about rtpproxy and OpenIMSCore server. Actually I want to make IMS running like this: client IPv4 -- > OpenIMS <-- ipv6client. I want to use RTPProxy as NAT, so ...
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1answer
79 views

Computer only accesses the internet when using a static DNS ip

My setup is wall-> Zyxel p-870h-51a VDSL2 modem -> DD-WRT router. The issue is that the modem has connected to the internet, but the computer is unable to. This is resolved if on the individual ...
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30 views

Blocking an outbound port for a bridge'd nat'd inteface

eth0 and wlan0 are bridged to br0, and have access to the outside world through eth1 and NAT. I'd like to block an outbound port on wlan0, but leave it open for eth0.
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117 views

packages from router dont match iptables dnat rule

I have the follow rules to forward port 443 from external to a internal host: IF_INET=ppp0 IF_INET_IP=1.2.3.4 # Router External IP IF_LAN_IP=192.168.0.1 # Router Internal IP ...
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2answers
2k views

No internet connection in Virtual Machine on selecting NAT in VMWare workstation

I'm facing this strange problem from yesterday where if I select NAT as the network adapter in VMWare, I'm not getting any internet connection in the VM. I have a requirement where I have to have the ...
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1answer
658 views

Virtualbox -> Can't add 2nd adapter to network for VM

I have a Debian Wheezy VM running in virtual box with the 1st adapter being NAT. However I want to also add a Host-only network but I can't add 2nd adapter to network for VM, it is grayed out. Any ...
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1answer
336 views

Odd packet loss through NAT with two WAN interfaces

I have got a Linux server machine which I also use as network gateway / "router". It has three network interfaces active – two network interfaces connected to the internet over different ISPs and the ...
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1answer
218 views

Editing IPTABLES nat rule in cron job

I am sitting here with an issue: I need to switch the source interface for iptables' NAT rule at a given time. I want to basically do soemthing like this - caution: concept code: #!/bin/bash if [ it ...
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248 views

NAT Loopback stops working after a few days

I bought an Asus RT-AC68 and set it up as a DHCP (10.0.0.*) behind my FIOS Westell 9100em router (192.168.1.*). The FIOS Router is set to DMZ-mode, and points to the Asus RT-AC68. The FIOS router has ...
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2answers
137 views

How To Obtain IP from Public Wireless Router and Share via My Own Private Wireless Router? [duplicate]

I live in an apartment with a public wireless router which requires you to log in via a splash-screen page. I want to have my own private wireless router which logs into the public wireless router ...
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25 views

NAT to remote computer

PC A (Windows 7) can create TCP connections to PC B (Windows XP) but B can't make outbound connections to anywhere due to firewall rules. If I need B to connect to a host in the same network as A, I ...
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35 views

Change current internet connection interface

I am at a dorm, where the internet is shut down at 11.30PM but I own a Vodafone dongle and I would like to automate the NAT setup, so that at 11.30pm, sakis3g is invoked to connect ppp0 to the ...
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1answer
820 views

With VMware Workstation, how can I SSH from the host to a guest with NAT?

My host is Windows 7 with VMware Workstation 10. I am running an Ubuntu 12.04 guest that is connected to an NAT network. How can I set up the network so that I can SSH from the host to the guest? I ...
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2answers
6k views

How to configure cable modem router to allow port forwarding to other connected router?

I recently got a new cable model that also acts as a router. I am not super thrilled about it, but this is what my provider gave me. My previous setup was using just a cable modem and my current WiFi ...
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2answers
3k views

NAT Port Forwarding in VirtualBox

I have enabled two adapters in my VirtualBox (running Ubuntu 12.10 Server Edition), with types as: Host-only and NAT. My main motive is to be able to connect two VMs running on two different hosts ...
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3answers
712 views

How to communicate with devices that have the same IP address

I have a situation where I need to communicate via telnet to multiple devices that have the same IP address. The context is that I am writing a "final test" of devices in a manufacturing facility. ...
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1answer
418 views

VMWare Fusion 6 Nat translation issue

I have the following network diagram, using VMWare Fusion 6 I am able to ping from the en0 interface on my mac to all of the 172.16 network, and on the custom linux kernel (2.6.x) base I can ping ...
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882 views

VirtualBox and Samba 4 on Linux Guest (NAT and Host Only)

Gentlemen, I really need a help from you to configure the "Samba 4" using the "Virtual Box". Here's the situation: In certain networks where I work, the Samba 4 works, in other does not. The guest ...
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80 views

Forwarding all traffic to other server with iptables

Assume I have a sever with X.X.X.X IP address and a web server with Y.Y.Y.Y IP address. How would I forward web traffic from X.X.X.X to Y.Y.Y.Y using iptables? My servers run Linux and use iptables
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66 views

How to setup my machine so I can reach my website from inside and outside my network?

I have a home web server and I cant access website from the external ip when inside my local network (due NAT loopback). Im trying to be able to seamlessly access my sites from outside and inside my ...
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2answers
641 views

How does Network Address Translation (NAT) works on a home router? [duplicate]

I have three computers connected to a router at home. I am sure my router has only one address. When the packet arrives from computer 1, the source IP is translated to the router IP address. Let's ...
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1answer
387 views

Linux nat with a secondary ip address

I want to setup nat on a server/router with a multiple public ip addresses (on different subnets and with different gateways, but the same physical ethernet interface), using address A for all local ...
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2k views

Why can't I access MySQL server with port forward rule in router?

This is my setup (the relevant parts, anyway): I have port forwarding rules in place (in the Linksys) for all the relevant ports and I've restarted that router multiple times, each time hoping that ...
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1answer
2k views

Forwarding all incoming traffic on eth0 to go to eth1

I am trying to setup my raspberry pi to sit between my router and my modem. I'm basically trying to set it up as an intercepting proxy so that all web traffic goes through the proxy. I have the ...
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1answer
768 views

How would I test to see if I'm behind carrier grade or regular NAT?

Inspired by the comments to this answer and its question. Some of my local ISPs are using carrier grade nat, and as someone who occasionally runs his own servers, remote support, it would be highly ...