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

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1answer
826 views

Linux PPTP VPN and gateway woes

I have an Amazon Linux machine running in an Amazon EC2 instance. I am connecting to my office's VPN as follows: sudo pppd pty "pptp pptp.<DOMAIN>.com --nolaunchpppd --loglevel 2 --debug" file ...
0
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1answer
736 views

How can I route internet traffic via another computer to sniff the connection?

I need to do port forwarding on Windows 7. I have machine A that runs a program, which connects to the internet. I need to debug this connection, and I can't install a sniffer for checking the packet ...
2
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2answers
2k views

How to access a computer behind two NAT routers? [duplicate]

For technical reasons that I cannot change my computers at home are located behind two routers, only one of which (the one connecting my own network) I have control over. Basically the setup is ...
2
votes
3answers
334 views

How is an HTTP proxy different from a NAT box?

A host in a LAN with IP (10.0.0.1 TCP port 8888) connects to a server without knowing there is a NAT box at the network edge. The NAT box is dumb and just translates port 8888 to some other port 5555 ...
2
votes
2answers
471 views

How can I access an IPv6-only host from a Windows 7 computer behind an IPv4-NAT?

I have a computer with Windows 7. It's connected to Internet via an IPv4 NAT router. How can I access a host that is only accessible with IPv6? Is there an easy way to configure the Windows 7 Teredo ...
3
votes
1answer
93 views

How can I view different internally hosted websites, set up as virtual hosts?

I have an old machine that I've converted into a web server. I'm wondering what the best way to make the websites viewable on the internal network, without using a proxy. I experimented with BIND, ...
3
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4answers
2k views

setup web server behind a router

I want to turn a laptop with a broken monitor into a home web server behind a wireless router (buffalo airstation). I removed all ubuntu gui packages and installed lighttpd. The laptop has a fixed ip ...
0
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2answers
1k views

Redirect subdomain to internal IP

I have a Fortigate 80C at home and have a number of servers hosted: mail, git, web, RDP, voip etc. Now I want these subdomains to redirect to certain internal IPs: mail.domain.com > 192.168.0.200 ...
2
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2answers
269 views

Without NAT on IPv6, and only one DNS name, how do i talk to my servers?

Right now we own one domain name (e.g. superfault.com). From the internet i can connect to a variety of networked devices using that single DNS name: superfault.com ...
0
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2answers
250 views

NAT Helper for HTTP

I'd like to expose a Web server available on an intranet (local IP address behind a Firewall + NAT) to another client on Internet or different LAN. Since I can't do anything on the firewall (ex. ...
3
votes
1answer
638 views

Redirect Port on Mac to VMWare

So...I have started working as a front-end developer in a shop that does .NET. I use a Mac and have a VMWare image with Visual Studio and the project on it. The project runs great. However, I was ...
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2answers
3k views

SSH connection between two behind-nat computers through third public-ip computer

I have a computer at home (home-server) that runs irssi, rtorrent etc. My ISP is blocking every traffic from outside (dumb, I know, but it's the only ISP I can have). I want to be able to log in into ...
1
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1answer
495 views

Shorewall NAT problem

I have installed and configured Shorewall with two ISPs. I want to provide Internet access to the clients and the other connection for servers connection and NATs. I can navigate both from the ...
0
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2answers
566 views

Understanding port forwarding and NAT

I've got some confusion about port forwarding vs NAT. I know the problems NAT causes for P2P, and that there exist some solutions to it (STUN,TURN,etc) which require a relay server to setup direct ...
1
vote
1answer
662 views

Linux router frequently drops connections

Until a few months ago, I had my Linux desktop serving double duty as a router for my home network, and all was well. Then I set up a small Linux machine to act as a stand-alone router, and since ...
1
vote
2answers
494 views

Firewall in front of device with public IP address

Is it possible to have a firewall in front of a device with a public IP address without getting in the middle of NAT? I have a server that I need to put on the internet, but I want to put a firewall ...
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0answers
68 views

NAT through VPN

I'm currently trying to access a resource located inside a VPN. For development purposes I need to use programs I don't have on the laptop that connect to the VPN and - for reasons that still escape ...
2
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2answers
96 views

Translating an IP Address again

I have a question about NAT(Network Address Translation). is it possible to translate an already translated IP address? would you please guide me why it is possible or impossible?
6
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3answers
8k views

Bridged vs. NAT: a Virtualbox and VMWare Comparison

I installed VMWare Workstation 7.1.x and Virtualbox 4.0.8 on two different hosts, so I could compare. I set the virtual network adapter on both to NAT, which was successful for both. The result: ...
5
votes
1answer
510 views

Rackspace Firewall/Gateway Setup

I have rackspace account and wish to have this sort of setup: Firewall/Gateway eth0 - Public IP (56.X.X.X) eth1 - Private IP (10.X.X.X) Ubuntu 10.10. Accepts connections from the internet and ...
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2answers
3k views

Can't access vm from other computers in the network

HOST OS: windows 7 64 Guest OS windows server 2008 32 Vmware Worstation 7.1 Network Connection Type: NAT I can access my application from the guest os using the computer name or localhost but if I ...
0
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1answer
114 views

route packets for 2 eth's

I have 2 ethernet cards on my 1st computer eth0 10.1.1.254/24 eth1 10.2.1.254/24 eth0 is connected to 2nd computers eth0 using crossover cabe which is 10.1.1.1 I can ping computer 1 eth0 from ...
1
vote
1answer
850 views

Network problems after installing text-only Fedora 14 using VirtualBox

A small background. I've just subscribed to virtual dedicated server running Fedora 14. But before starting to setup it, I've decided that it is a good idea to try all installing/configuration on my ...
0
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1answer
772 views

How to NAT DSL modem to a LAN computer?

I'm using DSL modem manufactured by Billion (China, i think), i have 2 computers sharing this modem. Now, I have a domain and want to A the domain to my modem's IP, however, when opening this IP, ...
0
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4answers
638 views

Running a server when all computers have the same WAN ip

I want to run a server on my machine so that anyone in the Internet may connect to it. But my Broadband internet provider issues the same WAN ip to all the customers while each of them has a different ...
1
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2answers
3k views

Setting up a Linux server with a public Static IP

I have setup a Ubuntu Linux server in an office. It should have a public IP so that outside users can access the internet. Currently, it is set with a public IP, but is it supposed to have a local ...
3
votes
3answers
1k views

How can my router have the same MAC as a computer in the LAN?

My ISP refused to give out a new IP when I switched from just having one computer in the LAN to using a router in spite of me doing a few releases and renews. So I tried an a little unorthodox ...
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5answers
11k views

SSH access to office host behind NAT router

I would like to access the ssh port of my office linux host from home. Unfortunately the host is located behind a NAT router. So, the IP address is not publicly available. There is however access to ...
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2answers
126 views

Two easy networking questions

I have basic understanding of networking, but I just want to know to more thing I don´t understand. So, I have 1st Router, which is connected to DSL/Router and than internet. So my structure is this: ...
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0answers
137 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 ...
0
votes
2answers
464 views

Why already set NAT info in router but not working?

I'm using ADSL service from ISP. The ADSL modem has only 1 LAN port and that port is connected to my PC. The LAN IP of my computer is 192.168.1.100, and I have apache running on localhost ...
0
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3answers
713 views

Remote socket connection C

I wrote a simple server application in C. I managed to establish a connection using telnet. The problem is that I cannot reach the server if I specify public instead of local ip in telnet. I mean this ...
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3answers
522 views

Why is port forwarding necessary for servers but not for clients?

Whenever I host a server, I'm required to forward the listening ports of the server on my NAT device. However, if I connect to a remote server, I won't be required to forward the port used for ...
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3answers
759 views

setting up the D-Link modem as a router

I have 5 computers and 1 D-Link modem that is connected to Bezeq (the infrastructure provider) All the computers and the d_link are connected to the switch. Currently only one computer is connected ...
0
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2answers
301 views

how to connect to my home computer when i was at company

i want to connect to my home's computer when i was at another place .but my home's computer is behind a router.and i can't set the router , cause it is not my. any way i can let my home's computer ...
0
votes
1answer
476 views

Need to connect to virtual box guest from host

The guest is a NAT device. From Ipconfig I can have an ip adress but I can't ping it from the host. do you have some ideas on how to connect to virtual box guest from host ? Host OS: 2008 windows ...
0
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1answer
874 views

Wireless router setup for 1-1 NAT

What I have: A linksys router WAG160N with firmware version 2 A "pool" of 5 external static IP's provided by my ISP 213.xx.xxx.n All the required configuration values for the static IPs such as ...
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0answers
675 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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0answers
834 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 ...
1
vote
1answer
986 views

loopback error, home network

I've setup my router to forward port 80 through to my computer, so I can access it from a dyndns.org domain. The domain and the ip both seem to be totally working, externally (can access it from ...
0
votes
1answer
884 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 ...
0
votes
1answer
535 views

SSHFS between two firewalled machines via third-party proxy

Both my home machine and my destination machine are behind NAT routers I have zero control over. I have a non-firewalled VPS that I can use for proxying requests. How do I set up sshfs from my home ...
1
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1answer
4k views

UPnP port mapping client for Linux

Is there any client that can request mapping and unmapping ports via UPnP port mapping behind a NAT gateway? I had problem with PortMap. I want this mostly for testing purposes.
0
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2answers
441 views

Any consumer routers with Outgoing VPN support?

When I'm working at home, I need to be able to connect to three different outgoing VPNs, two of which happen to use the same internal IP addressing schemes (192.168.0.*). I also need a static address ...
2
votes
1answer
600 views

Change the NAT setttings on mobile dongle

Is it possible to change the NAT type on a mobile dongle modem? I've searched the web but couldn't find anything. Should I contact the ISP for this, is it even possible. At the moment it is set as ...
10
votes
5answers
3k views

Does NAT provide security?

I'm following discussions about the IPv4->IPv6 transition, and IPv6 doesn't seem to like NAT at all. I've always thought that NAT was helpful in v4 for some security, I know it doesn't really hide ...
2
votes
1answer
373 views

What's wrong with my MAC address?

I have a D-Link DSL-2650U router, and exactly one computer on the network. For reasons of port forwarding I want to give my computer a static internal IP address, so that I don't take the chance of ...
5
votes
2answers
4k views

Connecting to a VirtualBox machine from the host, using an ip address

In a macbook host, I run VirtualBox having a guest ubuntu server, with a NAT network setting. In the virtual machine application "Parallels", I would get on the host an IP address of the guest, to ...
0
votes
1answer
7k views

DrayTek 2820 configuration using public IP addresses

I have a /29 range of public IP addresses assigned to me by my ISP. I'm trying to configure a SIP VOIP handset to register with my VOIP provider who recommend using public IP addresses rather than ...
0
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2answers
440 views

DIR-615 lose internet connection after 3 minutes

I got a new DLink DIR-615 routeur. DSL model connects fine. Connected PCs connects to the internet fine (wireless, wired) fine too. After ~3 minutes, connected PCs cannot go to the internet. Web pages ...