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)

2
votes
4answers
13k views

Possible to “ping” url:port? (OS X-GeekTool)

I'm trying to use GeekTool (Mac pref pane... basically just embeds output of a shell command/script on the desktop... ...
2
votes
1answer
225 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
3k views

keep SSH-port-forwarding connection alive

I am doing a permanent port forwarding via SSH. It is basically while true; do ssh <somewhere> \ -R <dst-port>:localhost:<src-port> \ -N -n ...
2
votes
4answers
10k 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
632 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
658 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
440 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> ...
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
4answers
3k views

Port blocking workaround

I recently was on a visit for a few days where my primary internet access was through verizon, which I eventually discovered blocks SMTP ports. I had to improvise a workaround to send mail, but I ...
2
votes
2answers
1k 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
2answers
397 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
1k 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
875 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
6k 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
527 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
2answers
919 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
786 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 ...
2
votes
1answer
41 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
142 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 ...
2
votes
2answers
82 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
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
296 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
230 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 ...
2
votes
1answer
67 views

Does Windows Firewall have a log?

I am trying to set my router to forward three of my ports for EchoLink. But I'm having trouble with it. I'm Using the PFPortChecker to see if the ports are open, it says they aren't, but to check my ...
2
votes
1answer
7k views

Port forwarding not working in dd-wrt

I just bought a Netgear (3700v4) wireless router to replace another one (3700v1) which failed. A friend had helped me get port forwarding working on the original one. One of the important things that ...
2
votes
1answer
2k views

Dynamic DNS on D-Link DWR-112 3G router uses a private IP address

I'm using a D-Link DWR-112 3G router to connect to the internet by using Celcom broadband plug-in. How can I do the port forwarding to my server? I already have correctly configured my DynDNS, but ...
2
votes
1answer
96 views

How to portforward a site

We have a website, and my superiors asked me to install the mail server that is packaged with Synology. As I mess around with port forwarding I was able to set the mail server and the NAS to connect ...
2
votes
3answers
423 views

Windows 2008 server and Redhat with only 1 ip address, can windows route the traffic?

I have a two home server VMs set up. Windows 2008 server on port 80 and Centos/Redhat on port 8080. Both have separate godaddy domain name A name records pointing to them. But I cant point both domain ...
2
votes
1answer
1k views

Connecting to my own network via external IP

Even though I have seen and read quite a few similar Q's I was still unable to understand what is required for me to be able to do this. I have an internal network. One of the machines is a web ...
2
votes
1answer
11k views

Change PPTP control connection's TCP port number

I have some Windows 7 clients that connect via PPTP to a CentOS server, but I would like them to use a port other than 1723 for the control connection as that port is not available. Is there some way ...
2
votes
1answer
3k views

VM on ESXi host - How does one make externally accessible?

I have a home server running ESXi v5.0.0 with a VM guest OS (linux) up and running. I have apache 2.x installed and serving to my machine (i.e I can access the default apache page when going to ...
2
votes
1answer
518 views

Using router public IP to access another (located in WAN) router behind NAT

I have following setup: at home I have a router up and running with public ipv4 ip at my country house I have ipv4 cam and router which is behind NAT - no public ip (public ip is too expensive) both ...
2
votes
4answers
4k views

Can't access VMware virtual machine through SSH

I have got a VMware Server 2 on a CentOS 5.6 host. I can access my virtual machines from the host machine, but I can not access it from other machines. I have configured NAT port forwarding. But ...
2
votes
2answers
3k views

Does Port Forwarding work for Apache Virtual Hosts?

I have an Apache HTTP server that serve few named based virtual host in LAN environment. For example: www1.local.mylan.com www2.local.mylan.com www3.local.mylan.com The local.mylan.com is not ...
2
votes
1answer
3k views

Cancel ssh port forward

To access restricted university web pages I often run the following command: ssh -fND port username@uni.address.here Then I open a firefox profile which I have set to go through port 5555 using a ...
2
votes
1answer
809 views

How to forward port when using 3 routers?

I've been struggling with my home network since I moved in but finally got to some results. Here's current set-up: INTERNET -> THOMSON 585V.7 (modem/Wi-Fi router) -> wireless bridge -> LINKSYS ...
2
votes
2answers
1k views

Intranet, no Internet after switch to static IP on OS X

I have a Linksys WRT54GS and have two machines on my network connecting wirelessly. DHCP is enabled, and is granting IP addresses in the .100-120 range. The one machine is a laptop running Ubuntu ...
2
votes
1answer
126 views

Troubleshooting port forwarding

I'm trying to run a web server from my home network, but I have some difficulty reaching my server from the WAN. If you have an idea where the problem could lie, or need more information, please let ...
2
votes
1answer
46 views

Connecting two subnets with router

I'm trying to share a couple printers on two subnets and I keep running into issues. I'm trying to figure out the best way to achieve this while maintaing a public and private subnet. Please refer to ...
2
votes
1answer
82 views

User transparent SSH multihop

What I have is the same as this question SSH tunnel through two servers to access a web service on port 9091 (mainly because I asked that question). But the difference now is that I'm accessing it ...
2
votes
1answer
243 views

How can I correctly do port forwarding on two routers; a Wimax CPE and a D-Link DIR 803?

The first router is a Wimax CPE from BSNL. It is connected to the BSNL towers which enables me to have an Internet connection at my home. The CPE has a LAN port and no other port. But since it does ...