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

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Turning Computer into Router,Network Address Translation encryption.?

I have windows seven and am using connectify. but when i try to connect to the interner through my ethernet court in my dorm room the comp0uter doesnt recognize the ethernet cord. I belive that the ...
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56 views

Linux VM can not connect to the internet

I'm trying to set up an virtual server with connection to the internet. When I start a ping to the local network, there are no problems. When I try to ping an address from the internet, it shows that ...
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587 views

After NAT how to setup VPN in windows server 2008 r2?

We have one windows server 2008 R2 with about 10 Hyper-V virtual machines. We've used wizard that comes when you enable RRAS to setup NAT, so that virtual machines can connect to internet (and to ...
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26 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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38 views

How do I configure NAT to forward external requests?

I have three Raspberry Pi's connected to Linux machines and one computer (also a Linux machine) connected to a router which is connected to the Internet. My goal is to configure each Raspberry Pi and ...
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117 views

NAT routing command in windows

Is there any specific command in windows which do the following task: I want to modify the source IP address in the packet whose Destination IP is not in the private LAN, i.e., I have a virtual ...
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134 views

Tunnelling TCP connection through NAT

My server is in my school's NAT and my desktop computer is in my home NAT. I want to SSH to my server from home. I normally used school's VPN, but recently for some reason I can't. So I'm looking for ...
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82 views

Netgear NAT over LAN TO LAN

I have the following question: I need to connect through a vpn IPsec lan 2 lan tunnel with a partner but they want that I connect through a specific ip subnet which is not mine. Here's the situation: ...
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228 views

IP forwarding with iptables

Suppose there are hosts A and B. A is allowed SSH access to B based on its IP address. Consider now another host C. C does not have access to B, but if we could route its traffic through A, then C ...
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402 views

Routing table on Linux not respected

I have a very specific problem, building a Linux VPN endpoint (with external VPN Gateway), which should route certain networks over the tunnel, others via default gateway. The Linux VPN should do a ...
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140 views

Is there a decent diagram of packet flow for a modern era (2.6+) iptables setup?

I'm currently trying to debug a particularly hairy set of DNAT based iptables rules (the UDP reply never makes it back to the original requester) and I'm struggling to visualise the packet flow ...
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140 views

How to provide “reverse ssh” to a shell?

Scenario: Many embedded devices (running Linux) out in the fields, behind routers so NAT'd and we can't make connections to them. We need for a support person to be able to initiate a terminal/shell ...
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329 views

How do you set up port-forwarding on a SwissCom Motorola Centro Grande?

I'm setting up a Minecraft server and the NAT forwarding on my router isn't working. This isn't the first time I'm doing this - I previously did this with an Apache server (used to run a server) and ...
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444 views

VMWare networking mode (NAT)

I've created a new WinXP vitual machine on my win7 using VMware player. This virtual machine is using NAT (10.0.0.0/24) and has a WAMP server running. I want this to be NAT as I want the server to be ...
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425 views

Mac OS X Lion - forward all connections on port 22 to external ip

I need to forward all connection to any address port 22 to a different gateway (i.e. no default). Firstly I suppose to do it with ipfw: sudo ipfw add 5 fwd $EXTERNAL_IP,22 tcp from any to any 22 ...
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128 views

peer to peer software vpn solutions?

Looking for a software based way to create a vpn for sales guys that will automatically reconnect if dropped (setup pptp dialin for moment but doesnt autoreconnect). I'm aware of Hamachi which is ...
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701 views

How can I port forward with an airport extreme and a NAT enabled modem?

I run an Actiontec HD701D modem with NAT to an Airport extreme base station to laptop etc. As you might expect I get double NAT issues. I tried a lot of different things to forward a port, but no ...
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13 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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14 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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11 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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19 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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12 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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19 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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12 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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29 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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19 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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29 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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37 views

Windows 7 Samba-Server Access via Routing

My Network is split up in 2 Sub-networks (network 1: 192.168.240.0/24 and network 2: 10.0.0.0/8). Network 2 has a Samba server on it. Both are connected via a router, network 2 is reachable from ...
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140 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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18 views

Apple Store Content Downloading Errors

Setup: I have two iOS devices and a Windows PC with iTunes. I am trying to download newly purchased music, book, app, or update an app from the Apple store over my LAN. The LAN has two routers between ...
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185 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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42 views

unable to configure nat on centos 6.4

i have configured nat on my centos 6.4 on vmware workstation with the following cofiguration i have two ethernet adapters eth0 and eth1 eth0 has public ip automatically taken by dhcp eth1 has private ...
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21 views

Custom Local Direct Route Windows

I have an external IP address of a load balancer that I want to route locally for internal servers. What's the best way to do this? I was thinking I could use the command line route command to add a ...
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77 views

client still cannot get internet access from gateway pc

I have already set up a laptop as a gateway in ubuntu 12.04. with 2 interface cards. internet >> eth0 >> gateway pc >> eth1 >> Access Point for eth0 IP dhcp for eth1 Static Ip 192.168.5.1 Access ...
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55 views

Wifi extenders: sharing private subnet

Apologies if this is a duplicate, it probably vaguely overlaps other questions. I want to create shared folders among home computers and laptops etc. running windows and linux (workgroups / samba). I ...
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244 views

Squid proxy server vs NAT rule of Mikrotik router

I have installed squid proxy server to hide our network ips after some time it becomes slow then I read through NAT rules to achieve what I want by proxy server. As per this link the difference ...
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442 views

How to configure AirPort Extreme as the DHCP/DNS/NAT server where DSL modem/router does them?

I have an AirPort Extreme BS and a modem/router (ISP's NetMaster). I want to host my own websites from my Mac Mini with OS X Server. At the moment, ISP's router is the DHCP/DNS/NAT server, and AirPort ...
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172 views

FreeSwitch - how to configure ICE, Turn, Stun, NAT traverse mode?

I have been using FreeSWITCH but some of my test users are behind very complicated network. Where default FreeSWITCH setup is not working such as: they can't register via SIP and also there are audio ...
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132 views

centos 6.4 nat virtual machines not able to connect to the internet

I have two virtual machines running on virtual box. The master has one interface(eth0) bridged to the host nic(eth0) and another one connected to the internal network(eth1). This acts as a gateway to ...
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65 views

Is it possible to communicate two networks without being dual nat?

I have two separate networks, at two different locations, each with there own internet, connected with a nanobridge(lan/lan). I have both networks set statically so that they aren't always crossing ...
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50 views

Cisco 861 Router forces one-to-one NAT

I have a cisco 861 router that only allows one-to-one NATs in order to access the Internet. I would like for computers to get an address via DHCP from this router, and be able to access the Internet ...
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933 views

Using iptables to give an LXC container a routable IP

I'm using Docker to manage LXC containers. At the moment Docker configures the underlying LXC container with host-only routing and then uses iptables/DNAT to punch holes into the container, making it ...
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631 views

Forwarding RDP connections with iptables

I have a workstation that runs Windows 7 as the host, and Ubuntu Server 12.04 in VMware on a bridged network. Both have their own static public IP address. However, I only have one hostname to work ...
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276 views

Port Forwarding to internal device without default gateway using iptables

I need to access externally (via Internet) one device in internal network which has no default gateway configured. Just IP and Mask. The standard iptable rule to accomplish the first part of this ...
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50 views

Ubuntu machine not visible on internal network

I have the following problem. My laptop with Ubuntu can connect to my home network without any problems, but it's internal IP (10.0.0.5) is not visible to any other machine on the network. I have ...
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32 views

How to restrict RemotePort of ssh to particular ports?

Consider ssh -R '0.0.0.0:9090:localhost:5050' [email protected] A laptop is running a webserver on port 5050 The laptop is behind a router with NAT and port forwarding cannot be ...
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33 views

any software that can do port forwarding for me when issue with double nat present

I have modem/router from Comcast and per some diagnostic tools that Comcast modem/router is creating what is called "Double nat". I don't want to replace modem/router, don't want to put it in a bridge ...
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45 views

linux natting one wireless card and a wired connection is not working

I am following instructions in http://blog.oberghmans.be/?p=71 to nat my wireless connection with some pc's that cant be connected to the router with a wired connection, using a Dlink DWA-525 Wireless ...
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264 views

Open ports and disable firewall from router D-link

I want to open and use the incoming ports from WAN to LAN: 443 (https), 1243 (mssql), 3306 (mysql), my firewall windows is open for out an in , I have static ip, I have the router D-link DSL 2500-E, ...
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118 views

iOS Hotspot Port Foward Hack (NAT)

Good Day, I have a hardware device that has a WiFi chip that requires port fowarding on a router to normally work. That is, my server sends data to the router, which has port foward info to foward ...