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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Port fowarding and load balancer in ubuntu server 12.04

I am looking to create a load balancing server. Essentially here is what I want to do: I have a public IP address, lets say 1.1.1.1 I have a second public IP address, lets say 2.2.2.2. I have a ...
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236 views

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 ...
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1answer
160 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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1answer
165 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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1answer
507 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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1answer
221 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 ...
2
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1answer
747 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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1answer
40 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 ...
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1answer
348 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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299 views

How to create reverse dynamic ssh port forwarding

I'm trying to set up an ssh tunnel layout where: client A (not ssh-server enabled) initiates ssh connection to server S socks server is opened on server S:yyyy that tunnels all data via client A ...
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1answer
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Double port forwarding - SSH

NOTE: I'm not explaining why I want to do this. But here is the requirement. There are 4 hosts. Host A, Host B, Host C, Host D Host A is running some application which can be accessed at port 8001 ...
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1answer
59 views

Forward all traffic from Android to Ubuntu server running privoxy (iptables)

My university has installed a non-transparent restrictive proxy which allows only traffic through 80 and 443 ports. Currently, I have my android phone (Nexus running CM12.1) pointing to my Ubuntu ...
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1answer
41 views

SSH Tunneling does it multiplex?

I'm writing an application which will be doing something similar to SSH tunnelling (port forwarding and reverse port forwarding). However, SSH will not be involved at all, hence why I'm not using any ...
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1answer
536 views

Port Forward :80 and :8080 to Two Different Servers

On a CentOS 6 server with an IP address of 172.16.1.10, how can I configure iptables to route traffic destined for 172.16.1.10:80 to 192.168.1.10:80, and traffic destined for 172.16.1.10:8080 to ...
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1answer
443 views

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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1answer
87 views

Ubuntu Server 12.04 vsftpd timeout using external IP

I am having a problem connecting to my Ubuntu 12.04 server with vsftpd using my external IP. Connecting with local IP is successful. I am using FileZilla for the ftp client. I know there is a bunch of ...
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1answer
160 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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1answer
229 views

Specifying a random monitoring port with autossh

I have many reverse ssh tunnels and because monitoring ports can't be reused, I am trying to find a free random port for monitoring. Meanwhile I specified -M 0 and the forwards work great and in ...
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1answer
250 views

how to transfer port in virtual box

I am running a Debian guest VM on Oracle VirtualBox on my Windows machine. I have a DNS server (bind) on the guest that I'd like to see externally from outside the guest OS. How do I give this access ...
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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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0answers
69 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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246 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 ...
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283 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 ...
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228 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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104 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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216 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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63 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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230 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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466 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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100 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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392 views

How to forward Remote-Desktop Port across interfaces using ufw?

Machine A has two network interfaces: Network eth0: 10.10.20.0/24 Network wlan0: 192.168.1.145/24 Machine A has 192.168.1.145 as Default Gateway, and also a route to pass 172.16.0.0/16 to ...
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64 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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123 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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22 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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35 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 ...
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700 views

Fedora 21 Port Forwarding with firewalld (firewall-cmd); how does it REALLY work? Or, does it?

Fedora's ability to forward ports using the apparently "native" networking software, firewalld, appears to continue to be broken beyond credulity. Please note that it hasn't really worked since at ...
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67 views

How to forward range ports in my linux server?

Is there any tools to do range port forwarding in my CentOS system? Just like any ports from 8000 to 9000 shoud be forwarded another IP's 8000~9000 respectively. I know it's easy to be done in Router ...
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225 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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169 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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Need help with openvpn with making clients on the Vpn can use ports and people can connect too them with the vpn ip

How do I let clients on my Vpn setup maybe a mine craft server on there computer using the Vpn's IP address
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Unable to connect the Ubuntu EC2 instance to VPC LAN on AWS using secondary NIC adapter?

Infrastructure setup: VPC is created with 192.168.254.0/24 netwok Private subnet within VPC (Virtual Private Cloud) is created with 192.168.254.0/25 network Public subnet within the VPC is created ...
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260 views

How to troubleshoot: “X11 connection uses different authentication protocol.”

I start an ssh session with localbox % ssh -vvv -Y remotebox 2>debug_ssh_log ...which succeeds. Then I try to run xlogo on remotebox, but the command fails immediately, and the following lines ...
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76 views

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 ...
0
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0answers
11 views

Bind address forwarding in Lighty

I have a question not sure is it possible or not, if possible then how ? I have a Lighty running on a Linux system and is bind to localhost only on port 80. I have another web site written in Node ...
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137 views

Cannot connect to Solaris Server when Oracle GoldenGate process uses the port

I'm trying to test the Oracle goldengate to replicate data between two databases on the same server. So I installed two databases and two goldengate homes in the same machine. The goldengate ...