port-forwarding on firewall or via SSH

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iptables port forwarding troubleshooting

I'm trying to forward connections on port 18600 to port 9980. I have this in /etc/sysconfig/iptables: # Generated by iptables-save v1.3.5 on Mon Oct 21 18:30:43 2013 *nat :PREROUTING ACCEPT [2:280] ...
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1answer
115 views

use VPN to prevent setting Port Fowarding in Router?

Right now I have 2 branches in Asia; one is in Malaysia and another in Vietnam. Unfortunately both are communicating using port 6901-6999 and port 1433. Because of the long distance between the two ...
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1answer
40 views

How is the port a part of a packet? [closed]

Computer A is running a program that initiates a request to Computer B on Port X. Where / how is the port transmitted in the API request?
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1answer
87 views

SSH tunnel chaining

I've found the solution here. http://chrisjordan.ca/post/15052405906/chaining-ssh-tunnels. Why is this answer right? Are the connections between A, B, C, D, E encrypted? From what I understand only ...
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1answer
4k views

port forwarding through AWS VPC NAT

Yes, I have already scoured the internet and read most of the popular IPTables / DNAT guides / pages / posts. My Problem Summary I have a VPC with several subnets. One subnet in particular requires ...
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4answers
3k views

Having two subdomains on one public IP addres behind pFsense router

I have one public static IP address. I have my main domain register at local Internet provider and their DNS. My main router is pfSense and behind it i have my local network. My WEB server is in ...
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3answers
246 views

Accessing a web server behind router, when port forwarding is not an option. Like localtunnel but for multiple sites

The situation I'm running a web server (CentOS on VMware, multiple virtualhosts) on a development machine and I'd like to give access to clients to view some sites without me having to upload them to ...
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1answer
60 views

Port foward to Server that has different gateway

We have two ISPS (2 gateways one Sonicwall and one Verizon Router) and one internal LAN. The sonicwall internal IP is 192.168.1.1 and verizon is 192.168.1.2 On the sonicwall I configured a port ...
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2answers
640 views

Port in Public IP can't be accessed [closed]

I have a local ip (xxx.xxx.xxx.xxx) and also a public ip (yyy.yyy.yyy.yyy) for my local server. I host a website in the local server on port 5555. I can open my website from the local ip ...
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2answers
2k views

Iptables: How to redirect all 8443 incoming and outgoing to 443

So I understand that you need to allow the connection first (right?) iptables -A INPUT -m state --state NEW -m tcp -p tcp --dport 8443 -j ACCEPT iptables -A INPUT -m state --state NEW -m tcp -p tcp ...
2
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0answers
431 views

How can configure Cisco ASA 5510 to allow access to Web server in DMZ from LAN with port translation?

I am trying to configure Cisco ASA 5510 firewall to allow access from LAN to DMZ web server. Web server is located in the DMZ and is using port 8080. I don't want users to type port number every time ...
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1answer
361 views

firewalld: trouble forwarding port 25 while other ports forward just fine, “rich rule” logging shows NO entries

So, I installed Fedora Core 19 for the first time as a replacement for an older system whose disk had finally died. The system serves as a web server and gateway / firewall, protecting internal ...
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1answer
146 views

Cannot reach website from outside of LAN [closed]

I am at much of a loss here, guys. I am running an Apache HTTP webserver from my laptop and I am unable to reach it from outside the routers borders/LAN. I cannot seem to ping it outside LAN and when ...
1
vote
1answer
456 views

Is it possible to get logging in netsh interface portproxy

I am using netsh interface portproxy to do some port forwarding on a server. Is there any way at all to see any logs of what was the input sent to the port, whether something was forwarded etc? i.e. ...
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0answers
246 views

Can't access Server 2012 IIS 8 remotely. Firewall settings are set to forward port to server's LAN IP

IIS role is installed in Server. Server has 2 NICs with fixed address on the same subnet. Firewall allows these apps and features: WWW Services (HTTP) Secure WWW Services (HTTPS) Remote Access Remote ...
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1answer
70 views

Port forwarding to the local network machines for local network users

All machines in my network based on linux. Main server has 192.168.0.1, mail server has 192.168.0.2, client machine has 192.168.0.3 ip. I've added iptables -t nat -A PREROUTING -d 192.168.0.1 -p tcp ...
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0answers
46 views

Remote listen to port

I have local server exists inside a corporate local network which is running a web-server at port 8080. I would like to make it available to the internet. But it is inside a local subnet with NAT to ...
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2answers
364 views

Remote Management (VNC-style) without Port Forwarding [closed]

Is there a way of setting up a VNC-style server (RDP would do as well) on machines behind NATs, and have access to them? Should be technically possible by having outgoing connections from the NATed ...
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1answer
43 views

Converting 'ssh -R' to 'ssh -w'

I use ssh remote port forwarding like this: ssh -R $PUBLIC_IP:80:127.0.0.1:80 The local server on 127.0.0.1:80 sees connections as coming from 127.0.0.1. Is there any way at all, hacky or not, to ...
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2answers
913 views

sharing a printer over a VPN

We have our head office, that has a static ip and two windows servers a domain server and a file server. We have another office that only has a router and a pc (with a static ip address) now my aim ...
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1answer
312 views

Port forwarding vs UPnP [closed]

I am wondering what the security implications are between running UPnP or Port Forwarding on my Netgear R6300 router are.... is one better than the other? If I have UPnP turned on and this test ...
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0answers
704 views

ASA5505, 9.1, Static NAT Port Range Forwarding

ASA5505 Version 8.4+ (Using 9.1).. Adding port range for static nat. object network server_x host 123.123.123.123 access-list outside_in extended permit tcp any object server_x range 1000 2000 ...
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3answers
378 views

Redirect localhost requests to a Linux container

I run some linux container on my ubuntu host. Each one of them are running a webapp. To be able to access these webapps, I use iptables to forward port: sudo iptables -t nat -A PREROUTING -p tcp ...
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1answer
98 views

with socat, given port on the remote (server) host is to be forwarded to the given host and port on the local side

Is it possible to use socat to achieve the following, without the need of using ssh? > ssh -N -R 8080:localhost:1080 mylogin@server.com -R [bind_address:]port:host:hostport Specifies that the ...
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1answer
108 views

running multiple application servers on a single AWS instance

I want to run multiple application servers on different ports on a single AWS instance with a different IP/domain pointing to each port. I don't have a clue how to accomplish this. I don't know if ...
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1answer
3k views

How to set up port forwarding on a NETGEAR ProSafe™ Gigabit 8 Port VPN Firewall FVS318N?

UPDATE: Rule might be right, but app still isn't functional. See more details after the screenshots. I want to forward port 3000 to a machine in the local network (192.168.1.106). So far I've ...
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1answer
766 views

Domain Based Port Forwarding with VLAN routing [closed]

At my new workspace I want to setup a network that enables me to deploy my web development work on Dev, Test and Accept servers (VMs) with (controlled) access from outside the network - based on ...
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2answers
1k views

Port forward an incoming SQL connection over TeamViewer VPN

I have a remote server which in turn has access to a SQL Server instance running in the same network. I am developing tools to use this SQL server, but have no backup or rights to backup/copy the ...
0
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1answer
75 views

Redirect clients through ssh tunnel to different server

I have a Debian server, and an OpenShift gear. To access the gear, clients need to connect to it with a SSH tunnel. I want people to instead connect to my main server using a normal connection, and ...
0
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3answers
2k 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 ...
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0answers
136 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
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1answer
54 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
121 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
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2answers
774 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
2answers
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 ...
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1answer
88 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 [closed]

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
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1answer
115 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
votes
1answer
115 views

Unable to setup HTTP Server so that external clients can access

I am running Red Hat Enterprise Server 6. It has Apache Server (httpd) installed and running on boot by default. My document files are kept in /var/www/html/web and I can access them on my computer ...
0
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1answer
122 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 ...
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1answer
183 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
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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
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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 ...
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1answer
72 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
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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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1answer
189 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 ...
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0answers
53 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 ...
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1answer
603 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 ...