port-forwarding on firewall or via SSH

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3answers
1k views

Forward traffic to local LAN IP while keeping the originator IP

I am trying to forward traffic from one server to another, while keeping the origin requestor IP. Therefor I cannot use SNAT or MASQUERADE. SERVER A: Public IP: 111.111.111.111 Private IP: 10.0.0.1 ...
2
votes
0answers
131 views

Unable to force passphraseless ssh authentication while port forwarding

I'm completely at a loss as to what is preventing my local machine from authenticating the connection that is being forwarded from the remote server. I've read a ton of the posts on here regarding ...
2
votes
1answer
50 views

Proper postgres port forwarding on linux/ubuntu inside AWS VPC

At Amazon AWS we have VPC, where one node has public IP and others - private. Instance with public IP is something like balancer. On every node we have Ubuntu LTS. One of the private nodes is ...
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votes
4answers
1k views

How to redirect traffic from port 80 to port 8080

Currently, in a local system there is Apache Tomcat on port 8080 and Apache 2 on port 80. I'm unable to start both the servers at the same time. We need to stop apache2 to have tomcat running in the ...
0
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1answer
107 views

Open loopback port for remote access

I have a pyLoad machine in my local network which connects with autossh to my hosted virtual server so that I can access pyLoad from wherever I am. Now I want to have access to the API port which is ...
2
votes
2answers
727 views

Unix Shell/SSH config to allow TCP port forwarding without showing a command prompt

I'm running a Debian Linux. I'd like to have a user account that is able to connect via SSH for TCP-forwarding only, without a command prompt. e.g the following would work (from a remote computer): ...
4
votes
1answer
1k views

Vagrant forward a range of ports

Is there a way to forward a range of ports using vagrant 1.2.1 or higher? I know that you can forward any number of ports individually by using config.vm.forward_port 80, 4567 Or, is the answer ...
0
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1answer
81 views

AT&T Business Class Internet Router Options [closed]

I have a situation where AT&T seems to be very uncooperative in their selection of modems (routers) for their business class DSL service. They essentially gave us only two options for modems ...
0
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1answer
2k views

Problems with port forwarding on a Arris TG862

I am having a heck of a time getting port forwarding setup on an Arris TG862. I am trying to forward port 80 to a machine on my network but I am having exactly zero luck. Here is my setup: The Arris ...
1
vote
1answer
110 views

Route SSL requests depending on host

I am trying to forward SSL requests depending on the hostname to sub daemons running on my machine. To achieve such a behaviour, I tried experimenting with nginx, which will then act as a reverse ...
0
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1answer
99 views

Forward only incoming requests to port 80

I'm trying to forward the local port 80 to the local port 9080. Basically this works if I set iptables -t nat -A PREROUTING -p tcp --dport 80 -j REDIRECT --to-ports 9080 iptables -t nat -A OUTPUT -p ...
1
vote
1answer
157 views

Should I use non- standard Windows Azure Port Mappings?

When I configured Windows Azure VM last night I had to Edit Mappings in Azure Management portal. This is a process of opening a public port and mapping that to a private port. Its very simple but I ...
0
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2answers
1k views

Cisco ASA-5505 Port Forwarding

I have a Cisco ASA-5505 firewall, which is currently configured to share our internet connection and do NAT for my LAN, as well as forward port 443 to an internal machine. I need to forward port 2222 ...
1
vote
1answer
1k views

ASA 5510 8.4 Nat & Portforwarding

So I'm trying to forward an internal service on a internal server to the external interface on the same port on the outside interface of our ASA. I been searching for a solution for days and found ...
2
votes
1answer
2k views

How to set mark on packet when forwarding it in nat prerouting table?

I have a few port forward rules like this iptables -t nat -A PREROUTING -p tcp --dport 46000 -j DNAT --to-destination 172.16.8.2:46000 iptables -A FORWARD -p tcp -d 172.16.8.2 --dport 46000 -j ACCEPT ...
0
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1answer
69 views

Do any applications using port forwarding require the SNAT address = external DNAT address?

We use iptables to implement SNAT for our users with a dozen external IP's in round robin (for load balancing). Our developers require port forwarding to their machines and have each requestded a ...
4
votes
2answers
2k views

NAT routing and port forwarding on Cisco ASA 5505

I have inherited my first Cisco router and am having trouble understanding how to do NAT port forwarding correctly. ASA: 8.0.2 ASDM: 6.1(1) I have a single external ip address on the outside (via ...
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votes
1answer
177 views

re-route requests on filtered smtp port 25 [closed]

My VPN filters port 25 (to prevent spam) but my ISP doesn't. The VPN takes over all traffic and changes the default gateway? How can I bypass the VPN to send mail? I want all outgoing traffic except ...
0
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0answers
51 views

Is there a way to diagnose *where* comms to a port on a windows machine is being blocked?

I am developing a system that comprises an email server. I have so far been unable to connect on port 25 (using telnet), despite having checked the following are set up correctly. Connections to port ...
1
vote
1answer
503 views

Can you configure SNAT with multiple source IP's and use static DNAT (port forwarding)?

We have a private LAN connected to a firewall with multiple public IP's to use for SNAT in order not to overload the ports on a single IP. However, we have a requirement to allow certain workstations ...
1
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0answers
627 views

Puppet agent (v3.0.1) hangs connecting to master (v3.1.1) in VM behind firewall (with NAT based access)

I am using puppet agent v3.0.1 (On FreeBSD), trying to connect to a puppet master v3.1.1 (On Ubuntu) and the puppet agent hangs with the following debug output: puppet agent --debug --no-daemonize ...
3
votes
3answers
2k views

Registering SIP phone (X-Lite) to asterisk server (asteriskNow)

We currently have a school-project going in which we need to set up an PBX with Asterisk. Thus we have installed asteriskNow in a virtual environment (with virtualBox) on ubuntu 12.10. We tried the ...
1
vote
4answers
105 views

Vps to laptop ssh tunnel

I have a laptop that I use mostly as a desktop but occasionally it moves networks. I have a vps with a static address and I want to forward ports from the vps to the laptop so that I can get to the ...
0
votes
0answers
157 views

set DMZ server on modem that not support DMZ, using port forwarding

I have to see an application server from outside of my network, but the modem that I am using is a Zyxel P-660-HN-T1H that not supports DMZ server configuration.So, which port(s) I should forward to ...
0
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2answers
611 views

DSL routing - NAT Virtual server - port forwarding - static ip address [closed]

My NAT virtual server - port forwarding has been working fine up to the past couple of weeks. All in a sudden, it doesn't work. Setting was done as shown on the link: I'm afraid it no longer ...
0
votes
1answer
318 views

Configure nginx to forward external port to same internal port

I'm running TileMill, which is listening to port 20008 and 20009, from localhost. I want 20009 to be only accessed through nginx on port 80 (with simple auth). I want 20008 to be accessible "directly" ...
0
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0answers
76 views

Forwarding DNS requests

How to forward DNS requests (or any requests on port 53) on Cisco Router (for example Cisco 2811)?
0
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1answer
56 views

How to configure port-forwarding to enable internal service accessed by another machine?

I have an existing service which is listening on 127.0.0.1:2009, and I want to access that service from another machine, so I tried to configure port-forwarding to do it: sudo /sbin/iptables -t nat ...
0
votes
1answer
251 views

redirect traffic from 2 Ubuntu external NICs to specific internal hosts

I am having problems redirecting incoming traffic to 2 external facing interfaces on my Ubuntu 12.10 server to 2 separate internal hosts. I am able to redirect incoming traffic on my eth0 just fine to ...
0
votes
1answer
262 views

Forwarding url requests to different ports

For development I run a few different servers (multiple instances of Tomcat and nodejs) to simulate some applications that work together. Each one runs on a different port and responds to different ...
1
vote
1answer
336 views

Packets do not reach FILTER chain of iptables

I have a problem I cant figure out, I am trying to access webserver on [RPI], but packets never reach iptables FILTER chain I will try to explain it a bit: GW1 has public address and doing DNAT from ...
0
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2answers
215 views

Opening tomcat server to the public

I have a server that is pingable from the public internet. I've just installed tomcat on 8080 port on this server. From the server itself I can see the main page come up when accessing ...
1
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0answers
71 views

Pass / forward 8080 port on server with masquerade

There is server machine wich is connected to ISP only with modem, no router. Server got apache on 80port. Now on other ethernet card in my server i have cable going to my router, router serve ...
-1
votes
1answer
162 views

How to check for GRE Tunnels [closed]

Is there a way to check for GRE Tunnels? I've heard spammers will use GRE tunnels to send mail from a central machine out of another and would like to check for possible GRE tunnels.
3
votes
2answers
703 views

VPC SSH port forward into private subnet

Ok, so I've been racking my brain for DAYS on this dilema. I have a VPC setup with a public subnet, and a private subnet. The NAT is in place of course. I can connect from SSH into a instance in the ...
0
votes
2answers
1k views

cisco ip nat / port forwarding

I have been trying to get port forwarding working with a newly installed cisco router. I cannot seem to find where my fault is and have been looking for quite a while. The relevant section of my ...
0
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1answer
491 views

Forwarding SNMP ports over SSH

I access my work network through a VPN and have access to every host in there through SSH. Currently I need to access around 3000 hosts via SNMP, but corporate sec policies restrict SNMP access ...
0
votes
1answer
197 views

How Do I Access A PIX External Port-Forward From The Inside Network?

I have a PIX running 8.0(3). I've got a port-forward to permit external users to hit a server on my inside network set up as so: static (inside,outside) tcp interface 8080 192.168.168.100 8080 ...
0
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1answer
537 views

NAT / Port Forwarding with iptables firewall [duplicate]

I've got the following setup: firewall (iptables) eth0 internal interface, 192.168.2.10 ppp0 external interface, public_ip (IP masquerading) server1 (192.168.2.11), service 1 (port 443) server2 ...
0
votes
3answers
252 views

IOS Nated port forwarding

I have cisco ios router with ios C1900 Software (C1900-UNIVERSALK9-M), Version 15.2(4)M1. And I have setup Nat with port overload (one public IP). And there is a static mapping: ip nat source static ...
0
votes
2answers
345 views

Re-routing incoming network traffic from sub-domain to specific port on Windows 2008

I'll do my best to explain this. I've got a Windows 2008 server with TWO local intranet-sites running on it. The first website will open if you just type in the name of the IP address - ...
0
votes
1answer
1k views

Can I confugure RRAS on Win8 (non-server OS)? [closed]

I'm trying to configure RRAS (Routing and Remote Access) on Windows 8 (not a server OS). Is this possible? I've started the service "Routing and Remote Access Services", but the entry still doesn't ...
0
votes
1answer
177 views

2 Public IP's - 2 exchange servers - Need port forwarding to both

I am currently setting up 2 new servers at a Church/Private school. They are migrating from one single exchange server to two separate servers, they are set up through vlan with different subnets. I ...
0
votes
1answer
360 views

How do I Reject all SMTP traffic except from a specified IP Block using DD-WRT?

I am running DD-WRT v24-sp2 std firmware on a Linksys WRT54GL. I have a port forward configured on port 25 to ip 10.10.10.1. What I want to do is allow this port forwarding, but only from WAN IP's in ...
0
votes
1answer
78 views

Redirect an Outgoing port using IPTables to an aliased IP

I'm working on a network where I need to set up a specific port forward and am struggling to figure out if IPTables can do it. I have a server on an internal IP (192.168.XXX.1) routing through a ...
1
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0answers
298 views

Static Public IP OpenVPN Client Needs to Accept Incoming Connections on His Public IP

I love serverfault, I have learned quite a bit from this website. Hopefully I can learn one more thing. OpenVPN Server has 30 Static WAN IP's each one has 1 user on it. Plus there is a main IP ...
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votes
2answers
838 views

Accessing a host's SSH tunnel from a guest VM in VMWare Fusion [closed]

I have VMWare Fusion running on my OS X host and I have a Windows 8 Pro guest VM running. On my host I have an SSH tunnel open on port 1010. The SSH tunnels works great from OS X Safari once I set the ...
0
votes
1answer
2k views

Configuring UPnP on pfSense

I need a little help configuring UPnP on pfSense. I have installed pfSense between ADSL connection and connecting internal router. There are two video servers behind the router that need port 80, ...
3
votes
1answer
61 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 ...
2
votes
4answers
2k views

LXC, Port forwarding and iptables

I have a LXC container (10.0.3.2) running on a host. A service is running inside the container on port 7000. From the host (10.0.3.1, lxcbr0), I can reach the service: $ telnet 10.0.3.2 7000 Trying ...