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

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2answers
300 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
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1answer
474 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
851 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 ...
2
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0answers
656 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
807 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
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1answer
967 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
853 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
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1answer
506 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
3k 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.
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2answers
423 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
554 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 ...
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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
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1answer
368 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
438 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 ...
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3answers
489 views

How to host a webserver through NAT?

I've come across many "How to host something while behind NAT" but none are like my situation (I knew how to host a server through a simple NAT anyway). This is how my ISP works... First, start off ...
3
votes
2answers
148 views

home network question regarding dhcp

My home network consists of a cable modem provided by the ISP, which is connected to a switch, from the switch 1 cable runs to the digital tv decoder/recorder also provided by my ISP and another cable ...
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3answers
14k views

Connecting to VirtualBox guest (ubuntu) from host (osx) via NAT?

I have a VirtualBox guest (running Ubuntu) configured with NAT through my host laptop (running OSX). It was my understanding that with NAT configured, I could access the guest from the host (w/o any ...
1
vote
1answer
1k views

How to create a TCP tunnel in windows to allow remote->local connections in NAT environment?

So I know about SSH tunneling via a remote Linux server to reach sites which are blocked in my local network. My question is the other way around: I have a webserver running locally, which I can ...
0
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1answer
2k views

pix 501, static route to d-link router (different subnet)

I have pix 501 cisco firewall with internal ip 192.168.10.1. I have connected d-link router (dir-655) to pix 501. The d-link router has internal ip 192.168.0.1 The picture would like something like ...
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3answers
152 views

Forbid one ip to access the wan

I'm trying to configure my DLink DI524 to do the following: I've got a PS3 on the LAN trough cable and my router is configured with MAC filters (this part is OK and working). But now I'm trying to do ...
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1answer
292 views

would a portable NAT router assist for security when you're travelling?

Would a portable NAT router assist for security when you're travelling? In particular say for the cases: a) using your own laptop / on an open wifi / using a VPN b) using your own laptop / on an ...
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2answers
5k views

How to setup external static IP address

I have a block of static IP addresses (eg. 211.11.111.n / n+1 / ...), how can i set them up. Or at least one of them, I need one to be pointing at a server. More specifically, in my network connected ...
2
votes
1answer
6k views

What router settings are required for Windows 7 Remote Assistance?

I want to connect to someone's PC using Remote Assistance in Microsoft Messenger. Both PCs run Windows 7. The remote user is the one initiating the request. We're both behind firewalls/routers ...
0
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2answers
320 views

Can DHCP and NAT co-exist?

I am using a U.S.Robotics 9108 to share ADSL Internet access via both LAN ports and WiFi. Is there a way to allow each Windows 7 PC connected to it to handle its own port forwarding needs, rather ...
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4answers
3k views

How to ssh into home LAN behind ISP NAT (no public IP address)?

My property management company provides free internet access. All the apartments in many buildings are behind some common NAT, so none of us have our own public IP addresses. Thus, services like ...
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1answer
647 views

Ubuntu 9.04, Firestarter complaints even behind the NAT router

I'm behind a router. In router config, I blocked: all (inbound and outbound) UDP inbound ICMP Local iptables are configures with Firestarter wizard: block all incoming connections allow all ...
0
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1answer
93 views

Network problems that might be related to NAT

I have an odd setup where there is a router(Router 2) routing between network network 1 and network 2. One router(Router 1) with nat for internet access that routes between internet and network 1. ...
0
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1answer
147 views

no websites loading using iptables nat

I'm using a 3G modem whilst o2 tranfer over adsl. trouble is no websites load but I can resolve domains. I enabled masquerade on the PPP0 ( modem) interface. added the server as default route for all ...
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2answers
3k views

Why is my router blocking websites? [closed]

I'm not exactly a networking expert and am currently having some issues with my new sitecom router (firmware is upgraded to the latest version) When NAT is enabled on my router and the router ...
0
votes
1answer
1k views

Bandwidth limit by IP on Ubuntu UFW NAT

How can restrict the bandwidth (or perhaps rate of packets) of each IP's traffic going through my Ubuntu Server 10.04 UFW NAT box? (If this belongs on another SOI site, please move it.)
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3answers
2k views

Trouble setting up UltraVNC over my router

I'm trying to setup UltraVNC on my home computer so that I can access it through my router. I'm running Windows 7, with UltraVNC 1.0.8.2, over a Linksys WRT610N Router. I'm able to connect to my ...
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2answers
570 views

Problems exposing a web site from behind a router

I have a D-Link DSL-2650U ADSL router for my home network. I also have my own domain server registered at dyndns.org, and I have successfully configured my router to keep [mydomain].dyndns.org ...
0
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2answers
145 views

Will a standard NAT-router firewall stop outgoing traffic?

Will a standard NAT-router firewall stop outgoing traffic? I can see that the firewall will stop incoming traffic, but what will stop outgoing traffic in the case of malware being on the machine? Is ...
1
vote
1answer
961 views

Share internet connection in OSX through existing wireless network?

It's easy to share your Internet with AirPort by checking "Internet Sharing" in the system preferences, but this option asumes you want to create a new wireless network. Is there an easy way to ...
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2answers
455 views

How are you supposed to NAT with Snow Leopard Server mini with only 1 ethernet port?

How are you supposed to NAT with Snow Leopard Server mini with only 1 ethernet port?
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3answers
10k views

Win 7: Share internet connection via Ethernet and WiFi

I have the following configuration: Box 1. Running Win 7, connected to the Internet via Eth0. Has one wireless network adapter and one another ethernet adapter (say, Eth1). Box 2. Running Win XP, ...
11
votes
4answers
61k views

Does mailx send mail using an SMTP relay or does it directly connect to the target SMTP server?

Suppose i send a mail using the following the following command: mailx person@x.com then does mailx first try to find out the SMTP server of my ISP for relaying the mail or does it connect ...
4
votes
5answers
982 views

VNC as a Support Tool Over the Internet

I'd like to set up an environment where I can use VNC to remotely support my clients over the internet. No VPNs and no port forwarding involved. I've used the UltraVNC repeater in the past, but the ...
11
votes
1answer
11k views

How does a NAT server forward ping ICMP echo reply packets to users?

NAT uses an IP address port number combination to hash the outgoing requests. Since ping requests consist of ICMP echo request packets, they do not have any associated port number. How does a NAT ...
0
votes
1answer
725 views

How can I fix my Virtual PC 2007 network configuration

I have installed Windows Virtual PC 2007 on my Windows 2003 R2 Server. I have installed a virtual Windows XP. I have configured the virtual PC to use Shared Networking (NAT) I have disabled the ...
3
votes
3answers
232 views

Find out how many NATs exist between my home machine and the Internet

Are there any tools/utilities that can help me find out how many NATs exist between my home machine and the public Internet? Any references to protocols that would help me figure this out would also ...
7
votes
5answers
13k views

Is it possible to host a web server from behind a NAT

My PC is behind a NAT router that has a public IP address. If I want to host a website then I believe I need a domain name which I can purchase from some site which would pledge to resolve all DNS ...
3
votes
2answers
4k views

Bridging my laptop's wireless and wired adaptors

I would like to be able to connect a desktop computer that does not have a wireless adapter to my wireless network. I could just run a network cable from my ADSL/wireless router to the desktop ...
35
votes
8answers
95k views

How to do networking between virtual machines in VirtualBox?

I have two virtual machines in VirtualBox. I would like to do networking between them. For the moment I have the default configuration on both, but they seem to have the same IP-address 10.0.2.15. I ...
2
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2answers
3k views

Difference between intranet IP Address and internet IP Address

My computer has 2 IP Addresses, one is 192.168.1.100 and the other is 78.x.x.x. If connecting to a socket, what IP address would a program outside of my network use, and how would it differentiate ...
9
votes
2answers
10k views

how to access samba on a guest Linux behind the VirtualBox NAT?

On my laptop, I'm running Ubuntu 9.10 under WinXP using VirtualBox 3.1.2. I want a setup where: The guest can freely access the internet. The host can access the guest files via Samba. The setup ...
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votes
7answers
8k views

VMware Player loses internet connectivity

Periodically, the internet simply stops working in my virtual machine, and the only way I can get it working again is to restart the host computer. Since I use the virtual machine specifically for ...
6
votes
3answers
43k views

How will a router with NAT disabled behave?

Just a quick, somewhat newbie question... I noticed that my home router has the option to disable NAT. How will the router behave with NAT turned off? Will it simply broadcast all incoming traffic to ...