Port forwarding is a process consisting in the translation of a host:port couple into another host2:port2 couple, both submitted to the same network mask.

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IPFW Port Forwarding

This is my situation: I want to connect to an OpenVPN server from my office (we're using a proxy, only ports 80 and 443 are allowed). Server IP address is: 176.31.250.232:843 My static IP address is:...
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3k views

forward packets from one interface to another interface using iptables

I have an embeded system with 2 interfaces e0 and m0, whose ips are 10.0.0.20 and 192.168.0.20, respectively. Incoming packets into e0 have an ip of 10.0.0.10 and should be forwarded to m0 interface ...
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355 views

Port forwarding for VPN connection

I'm using a public wifi hotspot. Usually when I connect to these, I immediately connect to my college VPN. On this hotspot, only browsing works (no program other than a browser seems to be able to ...
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432 views

Lightwight MTA which could listen on localhost port

I have multiple Ubuntu servers with Java applications running on it. One of the application's functions is to sent an email. Now we using exim4 as the MTA. I would like to replace exim with something ...
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417 views

SSH fork kills connection

I am using a linux script which has the task of forwarding control of the system to remote support. In this script one of the commands is a ssh port forward command that will forward the port of the ...
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630 views

iptables Port Forwarding — no service with the port

I have setup a network as in the image below: Firewall (FW) running CentOS 6 has two physical interfaces with subinterfaces: eth0:2 — 10.100.1.78/25 eth0:3 — 10.100.1.79/25 eth3 — 192.168.0.21/24 ...
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305 views

WHOIS over SSH via specific port

Is it possible to issue WHOIS requests via my local machine over a port other than 43 to a remote box to execute? Ideally, I'm using Jsch and I'd like to be able to round-robin these requests. I've ...
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924 views

redirect web server with no-ip and port forwarding in livebox

I want my Apache web server running on a Livebox (home router appliance running Linux) to be accessible from the Internet (WAN). I installed and configured the application noip2 on my Ubuntu PC. ...
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16 views

Can't get docker to forward ports

I've been following a tutorial to try and learn docker, however, for some reason I can't seem to access any of the ports it's meant to be opening. For some reason it just times out. Where can I look ...
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28 views

Raspberry Pi port fowarding redirecting to wrong local IP

I'm attempting to host a website from home using a Raspberry Pi with this tutorial. After following all of the instructions and finally testing the result by entering the NoIP address in my browser, I ...
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249 views

How check a port forwarded from localhost to localhost on.. localhost?

I'm learning about iptables, firewalling, routing and so on. I'm on Linux, Centos7, and I've set up a local port forwarding to localhost with: firewall-cmd --add-forward-port=port=2023:proto=tcp:...
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CentOS with AutoSSH, Port Forwarding Clarification

I'm using autossh and set it up like shown in the following example: http://surniaulula.com/2012/12/10/autossh-startup-script-for-multiple-tunnels/ I found it works really well, but need some ...
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93 views

Access fron outside browser to shellinabox site

Server : 192.168.40.23 `# vi /etc/sysconfig/shellinaboxd` # TCP port that shellinboxd's webserver listens on PORT=6175 # specify the IP address of a destination SSH server ...
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194 views

PostgreSQL Remote Connection debugging

I'm having issues connecting to my PostgreSQL database from an online source. PostgreSQL seems to be setup up fine it is running on it's default port 5432 and the postgresql.conf has the following ...
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182 views

UDP Port Fowarding: channel 2: open failed: connect failed: Connection refused

My situation is as follows: I have currently trying to have a program between two Hosts send UDP packets over a SSH Tunnel. There is also a host intermediate between the two hosts. Note Server01 ...
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64 views

How to ssh to a computer using a ddns server

I have Duck DNS installed on my linux machine and I want to be able to ssh to it remotely. The thing is I don't understand the port forwarding step. To complicate things, I live in a large house and ...
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430 views

SSH Failing to fork with sshpass

I've a problem with port forwarding command using sshpass. Problem is that it's working on one server and does not work on another. Both are Debian 7 x64 boxes. sshpass -p password ssh -f -D 0.0.0.0:...
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The right way for dynamic ssh port-forwarding

Want my Firefox could use localhost:9099 proxy forwarded from vps server, why it doesn't it work this way? I always get bind: Address already in use $ ssh -vfND 127.0.0.2:9099 vpn OpenSSH_5.9p1, ...
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CentOS7 on VMware: How to reach Docker service from Host

I want to access the guests docker services via browser with IP:port/service. For example, I'm running a RabbitMQ, which I want to check. Unfortunately I get a ERR_CONNECTION_REFUSED, when trying to ...
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206 views

How to monitor UPnP communication?

My Computer is connected to router that supports UPnP, however it's not the last router on the way to the WAN. So, mapping there has no effect. I've got VPS and I've made a VPN network (computer <-...
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314 views

Port Forwarding Between 2 Internet Machines

Here's my scenario: Setup There are 3 machines: A: on the internet : has ip (a.a.a.a), has port pa open B: my server / gateway : has ip (b.b.b.b), has port pb open C: on the internet : has ip (c....
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21 views

Firewalld forwarding between zones not working

I have a centos 7 kvm hypervisor running multiple VMs that are configured to use NAT networking. These VMs run their services, of which ssh is the most important for administration purposes. I would ...
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148 views

Cannot connect via ssh to server with global IP address

I have the no-ip service running on my raspberry pi, it updates the DNS (no-ip) whenever there is a change to it's IP address. I have enabled port forwarding on my router (Asus rt-n66u) ports 22 &...
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35 views

BeEf Famework Kali-2 configuration

I am running Kali-2(rolling 1 latest) in Vmware workstation 12. I have forwarded my ports and am using NAT. The beef framework links only seem to work within the local network. Any specific reason? ...
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36 views

How can I temporarily map a remote host and port to a local port?

Say I have a machine A acting as a router with two NICs and the following IP addresses: eth0: 192.168.1.1 (LAN) eth1: 10.0.0.1 (WAN) And I have another machine B on IP address 10.0.0.2 that I want ...
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How to properly port forwarding between different machines using UFW / iptables and DD-Wrt?

This is my network I want to see my ip_camera (192.168.3.4:80) from outside my house. It is on dd-wrt router (192.168.3.1) without internet. The router 192.168.1.1 has internet. However, i have a ...
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180 views

Why MS Sql port (1433) forwarding does not work over http_connect proxy?

I have a windows machine with putty, which has access to ms sql server on local network. And i have a remote Ubuntu machine on the Internet with sshd on 443 port (required to establish secured ...
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180 views

Iptables proxy, redirect all connections from a certain port to the internet?

I have an ubuntu pc and an android phone conneted to my router through a cable and wi-fi respectively. I set the android phone to use a proxy my-wan-ip:5555 and enabled port forwarding on my router on ...
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99 views

Unable to ssh in to machine behind router

I'm trying to ssh into a desktop which is behind a router from a remote location. I've set the router (TP-link AC1750) to forward TCP connections to port 8000 along to port 8000 on my desktop using ...
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488 views

Port forwarding with iptables and PIA VPN for single user

I've gotten a Private Internet Access VPN setup on a Mythbuntu 14.04 machine and I am at wits end trying to get port forwarding working with rTorrent (and ruTorrent). My setup is rTorrent running ...
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302 views

How to create a rule on IPCop firewall for bittorrent trafic to work properly?

I've been trying to use my favourite torrent client (µTorrent) after setting up my IPCop (last update 2.1.9) and it warned me that my router/firewall was blocking the traffic and that I had to open a ...
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691 views

Miniupnp thinks my router doesn't support UPnP

I have a IP camera on my network that is truly plug n play. As soon as I plugged the Ethernet cable in, it was accessible from 'the outside', without me having to touch my router's configuration. So I ...
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195 views

How to access Transmission runing behind a NAT from external PC

I have two PCs at two different places. Ons is behind a firewall I cannot (place X) control and the other is at my home. Transmission has a way of adding/ removing torrents using a web interface. ...
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377 views

PPTP port forwarding

I have a Debian server (with public IP) and Raspberry-PI at home with ADSL connection. I am running a web server on RP which I want to be accessible from the outside. I have set up PPTP and my RP ...
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781 views

Port Forward For OpenVpn

I have setup a OpenVPN server on CentOS 6, and it starts ok when i /etc/init.d/openvpn start it shows me Starting openvpn: [ OK ] so far so good, but ...
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170 views

What is the point of the second route lookup after OUTPUT?

According to the packet path diagram, and its description: Table 6-2. Source local host (our own machine) [...] Routing decision, since the previous mangle and nat changes may have ...
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108 views

Forcing broswers to use a different host and port when viewing websites over ssh-tunnels

I've setup an ssh tunnel to a network that has a website I need to view. However, when requesting the page my browsers sends the host localhost and url http://localhost:1234 in the HTTP headers. Is ...
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160 views

setting up a local VoIP to use as a Wifi Headset

I had this idea of using Wi-fi in a vehicle to connect my cell to the car call handler.Just as it works with bluetooth nowadays. Just to demonstrate that such a thing is possible , i had three Linux ...
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32 views

Multiple Tomcat Containers using Docker

I need a machine to run 2 BPM engines for comparisom. I'm running Camunda BPM in port 8080 so I want bonita to answer in port 8081 on the same host. I've installed the appliance with the following ...
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Question about SSH tunneling

Consider this scenario. I have network manager on Server (S) and a network machine (N) both in a different network."N" can only be accessed via VPN..... .My laptop (L) is in the same subnetwork of ...
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Can I use UFW to replace the job of a router to route port connections to my applications?

I was on AT&T and had a router and always had to setup port forwarding for a few applications, like Qbittorrent etc. Not tht im on Time Warner Cable all I have is a modem and a switch and im ...
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153 views

Iptables Port Forwarding is not working for Host Only Network. What am I doing wrong?

Host OS Ubuntu with live(public) IP address 1.2.3.4 . And a Ubuntu VM running in Virtual Box with Host Only and NAT network configuration. Configuration of both network cards are according to this ...
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66 views

Cannot telnet to Postgresql Forwarded Port

I'm trying to portforward a PostgreSQL port using my DLINK ADSL Router. I have the following IP addresses. Public Internet IP 197.321.321.32 PostgreSQL 192.123.123.12:5432 (Port To ...
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83 views

External port forwarding stop working when VPN is activated

I've a problem with my local Debian server. I use a port forward to allow access from outside my lan to my server. It's works very well but when I activate my VPN (OpenVPN) on my server, the port ...
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160 views

Accessing forwarded port via SSL/TLS

I have a Raspberry Pi that sets up an SSH tunnel with my VPS so that I can access several things remotely. My Pi forwards its local port 80 to my VPS's port 3180, so I can access it via http://domain....
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587 views

CentOS as home network router: IPTables Port Forwarding failure

I have currently set up a home server with a CentOS 6.6 installation on it. The server has two NIC interfaces which I'm using it as my router and DHCP server. Here's a diagram showing the network ...
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518 views

Opening a TCP port in Linux

I am trying to establish a TCP socket between my linux server and my client running on my laptop. The TCP server code I am running is, from socket import * HOST = '' PORT = 1999 ...
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Port forwarding Configuration for Webcam

I have a webcam which is streaming via mjpg-streamer on http://localhoste:8121/?action=stream. Now, I'm wishing to access the camera from outside. I'm using an DDNS system and now I have a domain name ...
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forward Windows application connection to a unix VPS to bypass port restriction

my campus has blocked all ports except those for webpages 80, 443, but funnily I can access my SSH via putty with port 88888 configured on its sshd. I am wondering if there's a way I can make my ...
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Assign port to container

On my container with ID 634eb4c5d6ee I have these ports: docker port 634eb4c5d6ee 222/tcp -> 0.0.0.0:222 8080/tcp -> 0.0.0.0:80 8443/tcp -> 0.0.0.0:443 Now I want to change 8080/tcp -> ...