Port forwarding is the act of using redirecting one port to another, commonly used to access a computer from behind a firewall with NAT.

learn more… | top users | synonyms (1)

3
votes
1answer
1k views

Can't access localhost via public IP

I'm having trouble enabling public access to my XAMMP setup. I've been looking at a few threads over at Tom's Hardware forums to resolve this issue but can't figure out were I'm going wrong. Whenever ...
3
votes
1answer
3k views

Properly portforwarding the external IP with iptables

I am trying to forward all the incoming internet/LAN requests on port 80 to my local machine (running Apache), current iptables work (forward incoming internet traffic to my desktop, but if I try to ...
3
votes
2answers
2k views

Port forward to different port number

I have a router that sets up rules like so: TCP Any -> 5800 Any -> 5900 UDP Any -> 5800 Any -> 5900 Computer: ip-address This would allow someone 'outside' to connect to my router's ...
3
votes
1answer
95 views

SSH not creating dynamic forwarding, why?

Edit: meanwhile, I filed a bug with openSSH (https://bugzilla.mindrot.org/show_bug.cgi?id=2577). Should there be any outcome, I will post it here, too. I use an SSH jump host/proxy at a location to ...
3
votes
0answers
513 views

Port forwarding outgoing request with PF

I'm trying to redirect all outgoing traffic from my local machine on port 843, to go to my local service on port 1234. So, when I make a request to e.g. 1.2.3.4:843, I want it to connect to 127.0.0.1:...
3
votes
1answer
205 views

Connect internet camera and bridge/forward IP traffic

I have an Ubuntu (14.04) machine with two Ethernet cards. One Ethernet card (eth0) is connected to the office network. The machine is addressable from the outside Internet. I have a Web camera that ...
3
votes
1answer
974 views

Port Collisions when Forwarding Between Guest and Host

I've been working on getting setup with Vagrant using a VirtualBox base box, and would like to forward ports between my guest (Ubuntu 12.04) and my host (Windows 7) for accessing the apache2 server ...
3
votes
1answer
349 views

Is there such thing like a port forwarding service out in the internet?

I'm looking for a service on the internet allowing me to redirect TCP connections. My company's firewall is very strict and allows only HTTP (through a transparent proxy) or SSL on only port 443. I ...
3
votes
1answer
2k views

ssh port-forwarding with GatewayPorts = no

I want to forward sshd (port 22) on machine X which has a non-routeable IP. The forwarding options are nc (which is horrible), inetd (requires privs), iptables (requires privs) and ssh. So I'm using ...
3
votes
3answers
15k views

Remote desktop connection over internet without port forwarding?

let's say that we have this situation. I want to remote desktop connection to my friend over the internet, but I don't have premission for port forwarding on the router, and my friend also can't ...
2
votes
5answers
2k views

Setting up an SSH Server on Port 80

I'd like to set up an SSH Server to the public internet on port 80. I've got SSH for Windows installed on my machine, and I can use Putty to SSH into localhost. In my router config, I set up a "...
2
votes
3answers
1k views

DynDns confusion

I'm pretty sure this doesn't belong on serverfault. Anyway, I'm confused with DynDns. Its supposed to change the IP address whenever your IP address changes, but for anyone to access the host I have ...
2
votes
5answers
4k views

Forward port 80 on a Linksys WRT54GL to port 80 of a single IP on the local network

I have a Linksys WRT54GL router and a home network of two PCs. What I want is one of the PCs to be a web server visible from the world on my static IP. It is a WindowsXP PC with IIS 5.1 setup and ...
2
votes
2answers
441 views

Can someone access my locally run website even if I haven't specified any port forwarding?

I am using Xampp so I can test my web application directly on my own computer. I am concerned that someone can access my Xampp site since I am still connected to the internet. However, I have NOT ...
2
votes
4answers
3k views

Does port forwarding a port on one computer expose other computers in the network as well?

I have read that port forwarding exposes your computer to security breaches. Does port forwarding a port on one computer expose other computers in the network as well?
2
votes
1answer
254 views

Can router connect back to itself over Internet and why?

As it it sates in title. Every router I had couldn't connect back to itself over Internet, for example: I open forward port 22 for ssh on my PC. I try to connect to that ssh with other PC in same ...
2
votes
4answers
11k views

VNC on port 80 (TeamViewer can do it)

How does it come that programs like TeamViewer can communicate without any problem on port 80, but it is not possible with VNC? Are there any free and open alternatives to VNC that can do this, too?
2
votes
2answers
6k views

Portforwarding is not working in E5172 Huawei 4G Router

I have been trying to do port-forwarding on my router (Huawei E5172 4G Router). I've done this before and it worked but i can't get it to work on this router, and i have no idea why! This is a ...
2
votes
2answers
699 views

How to forward a port to another server connection via SSH

I think what I am trying to do is called SSH Tunneling. I am a bit confused if this is actually what I want to do. I want to setup a tunnel on port 1234 on Server A. Server A forwards all ...
2
votes
3answers
2k views

Port forwarding: If the IP is static, what happens to computers set up for dynamic IP adresses?

If I set up my router to hand out static IP adresses, as far as I know, I will have to configure my computer to use a specific IP adress. What will happen if someone don't configure their computer, ...
2
votes
3answers
663 views

port forwarding on mac with belkin router?

I'm trying to set up port forwarding on my mac so I can do iOS game center programming. I have a Belkin router. Apple's instructions are here. But after several hours of using Apple's instructions ...
2
votes
1answer
2k views

How to tunnel a local port onto a remote server

I have a domain that i bought from DynDNS. I pointed the domain at my ip adress so i can run servers. The problem I have is that I don't live near the server computer... Can I use an ssh tunnel? As I ...
2
votes
2answers
479 views

Weird behaviour with mysql port forwarding

I have set up MySQL port forwarding in my machine as: ssh -f -N -L :9906:localhost:3306 <ssh login> Now, if I try to connect to MySQL from my localhost as: mysql -u<user> -p<...
2
votes
2answers
3k views

Do hotels block certain ports? [closed]

I'm on vacation this week and I'm trying to access my home DVR camera system (Bunker Hill DVR) from the hotels I've been staying at. Unfortunately, I have not been able to access them successfully. I ...
2
votes
3answers
183 views

I'm in a pub with only port 80 and I need to SSH into something

Any public proxy ideas that I can use right away over port 80? I would presume this is a common problem. Would be nice to know if there are any sites sites or tools for solving it.
2
votes
2answers
1k views

How to keep a static network local IP for all the connected machines, and still dynamically assign all the incoming ones?

I have read the manual and could find no word on this, so I'm asking here. I have a couple Macs on a wireless network, this router model: http://homesupport.cisco.com/en-us/wireless/lbc/WRT54GL Now, ...
2
votes
2answers
2k views

How can I run SSH on a port other than 22? [closed]

I have a Linux machine on my network. I connect to it using SSH with PuTTY over the Internet, so I have forwarded port 22 to the machine. Now I need to put another Linux machine on the network. I ...
2
votes
1answer
23 views

Launching chrome adds port forwards

I've installed Google Chrome using the google-chrome brew cask, a while ago. This morning I noticed that I have various ports forwarded on my mack to random places, as show by the lsof command… $ ...
2
votes
3answers
173 views

How do you debug broken home networks?

I have a small home network, and I’m having trouble accessing one of the computers on that network. The home network is NAT’ed, and I've set up some port forwarding and a dynamic DNS. rye sits on my ...
2
votes
1answer
7k views

Does Wake-on-LAN via WAN needs port forwarding?

If yes, how does it work? The pc still has no ip, so where should I forward the port?
2
votes
2answers
484 views

Port forwarding doesn't work?

I set up a linux box a few days ago to host a web server (nginx). The site is ilan.duckdns.org, and I can connect to it fine using my local IP as well as the external IP. However, when I use ...
2
votes
1answer
2k views

MOSH into bastion server, SSH into internal hosts

I have ssh configured to automatically forward through the bastion host: Host bastion_host HostName bastion.example.com Host internal_host ProxyCommand ssh -q bastion_host nc -q0 ...
2
votes
6answers
965 views

Trying to set up at-home server but not able to set up IP forwarding

I'm having a bit of an issue trying to enable IP forwarding for my server. Hardware: Modem: Embarq 660 Series Router: DI-624 D-Link Computer: Vaio Windows Server Software: Apache, MySQL, PHP ISP: ...
2
votes
2answers
7k views

DD-WRT routers - How can I specify any/all IP address ranges?

I'm creating port forwarding rules on my DD-WRT router (shown below) and want to allow all (any) source networks access. My thought was to specify 0.0.0.0/32 but that is not working. How do I ...
2
votes
3answers
608 views

Setting up WOL for PC

My goal is to be able to wake my PC up remotely. So I did the following: 1) Running Windows 8 so turned off my firewall 2) Went into my LAN properties and enabled WOL 3) Went into BIOS and checked all ...
2
votes
1answer
13k views

How can make a web server publicly accessible?

Recently I have installed LAMP server on Ubuntu Server and now my website is accessible from any device that is connected to my DSL modem (router). But I don't know how to make the server accessible ...
2
votes
2answers
949 views

Iptables port mapping from two PCs to one

We have 3 PCs, two of it are connected to internet (both of it have 2 NIC) PC1: eth0 - 1.0.0.1 (external IP) eth1 - 172.16.0.1 (internal IP) PC2: eth0 - 1.0.0.2 (external IP) eth1 - 172.16.0.2 (...
2
votes
1answer
3k views

Forwarding port 80 of Windows 7 to virtual Ubuntu Server

I'm running a virtual instance of Ubuntu Server using VirtualBox in Windows. To access the site hosted in it, I want to forward port 80 to Ubuntu, so that I can simply go to localhost to mess around ...
2
votes
2answers
19k views

Set Up Port-Forwarding on Netgear N300 Router

I have a Netgear N300 router that has DynDNS.org as a preset DDNS option. After setting it up it (unsurprisingly) sent traffic directly to my router. I'm essentially using this to connect remotely to ...
2
votes
1answer
839 views

How do I port forward my Computer that uses Bridging?

I need to portforward my computer using bridged connection type. Previously my router dialed my connection and there was an Port forward page in the router and by adding rules there , it worked Now ...
2
votes
2answers
1k views

Use Port Forwarding on Airport Extreme

Is there any way to use port forwarding on an Airport Extreme? I don't know the exact model but I know for a fact that it is the newest kind.
2
votes
4answers
4k views

Port Forwarding: Why do my local sites on 80 work but not those on 8080?

I setup my router to forward port 80 to the PC hosting my web site. As a result, I am able to access this url (Don't bother clicking on it, it's just an example): http://my.url.com/ When i click on ...
2
votes
2answers
5k views

Why isn't my port forwarding with mysql working on my server?

I have a mysql server running on some server in our network. Now, only connections from localhost are accepted by the server and I can't connect to it remotely. Now, I want to set up a port forwarding,...
2
votes
1answer
159 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 ...
2
votes
1answer
268 views

How do I make a server accessible over the internet

I wrote a chat client and server in Java. It works but as I'm finding out, only locally. The goal is to get it to function over the web. I've tried quite a lot of things, and can elaborate if need be....
2
votes
2answers
107 views

Shared external IP address

So Here is my set-up: I have a raspberry pi behind a router. I set a static internal IP address for the pi. I configured the SSH config files and everything how I like it so far. I have a contab ...
2
votes
3answers
7k views

virtualbox port forwarding does not work

My Ubuntu is the guest OS running on a windows host. NAT is used and port forwarding has been added. All access to host on port 3000 should be forwarded to guest on the same port. But that port can ...
2
votes
2answers
2k views

Port Forwarding on Router using same internal port number on different IP addresses

The objective that I'm trying to achieve is to be able to connect to two computers that are behind the router using RDP. My logic is that I should be able to connect to the router externally on 2 ...
2
votes
1answer
364 views

Is forwarding to port 9 (discard) essentially the same as blocking a port?

My router (Linksys WRT1900ac) seems to leave port 4567 open, as discussed in this question. I'd like to block that port. Unfortunately I see no easy way in the Linksys admin console to simply drop ...
2
votes
1answer
249 views

If my DSL modem leaves a port open, how vulnerable is my router?

Port scans of my old Netgear router showed that port 4567 was open. I assumed my router was to blame. Now port scans of my new Linksys router show the same open port, which makes me think my DSL modem ...