Port Forwarding with Port Translation RV042, RV016, RV082

This is a feature request for the Linksys RV series Routers. Currently, it appears that the Cisco/Linksys RV042, RV082, and RV016 only support port forwarding and 1-to-1 Nat. One item that I find very helpful with customers is port forwarding with port translation. I am requesting that this feature be included with a future firmware relase for these RV series routers.
Here is an example of the request.
Take an incoming service request on a TCP or UDP destination port and forward it to an internal IP on a different TCP or UDP port. For example, customer A wants to allow different machines on the internal network to receive Windows RDP connections inbound. To make PC maintenance identical between the internal machines, the customer does not want to change the listening port for RDP on the individual PC workstations through the Windows Registry. The customer also does not want to dedicate separate IP's to each machine in a 1-to-1 NAT setup. The only option is to have remote connections to each of these PC's to use a different destination port. So, for example, PC one could be reached on TCP port 5151, PC two on TCP port 5152, and PC three on port 5153. This requres a firewall that is able to translate each of these connection requests to a different internal IP on the default RDP port (TCP 3389). So, the following setup is required:
Port Forwarding with Port Translation:
Router External IP on TCP port 5151 ---> forwarded to PC One's internal IP on TCP 3389
Router External IP on TCP port 5152 ---> forwarded to PC Two's internal IP on TCP 3389
Router External IP on TCP port 5153 ---> forwarded to PC Three's internal IP on TCP 3389
There are several comparable "small business" class router competitors to the RV042, RV082, and RV016 that will perform this port forwarding with port translation process without incident. Unfortunately, these Cisco/Linksys small business routers will not accomplish this task currently.
Please implement this feature in a future firmware release.
Thanks!

Excellent. I see this now. None of our customers actually use the UPNP feature, so we never realized that Port Forwarding with Port Translation features existed on this page along with the ability to enable or disable UPNP.
Perhaps, in the future, this functionality could be moved to and incorporated into the port forwarding page which seems to be a more logical location.
In either case I'm very happy to know that this feature is available on the RV's.
Thanks for your assistance.

Similar Messages

Port Forwarding with Verizon-Branded Action GT704-WG

I am new to the forums, and I am already overjoyed with the 30 minutes I spent figuring out that the login mechanism does not even work with browsers other than IE7/8. Lots of fun to start.
I live in a residential building with the residential High Speed Internet Plan. I assume this is the case because it is a DSL line and they are not using business grade, or I do not think I would be having these problems.
I have spent many hours trying to figure out how to port forward with the above-mentioned router/modem/gateway/**bleep** extraordinnaire. I am in IT professionally, and I am tired of feeling **bleep**. I called Verizon tech, but they were very unhelpful unless I pay for a premium tech service to figure out port forwarding problems. And yes, I have read the info on port-forward.com numerous times for this device.
Essentially, I want to forward an arbitrary port, let's say 6336, to a server running Ubuntu 9.10. I have put this computer in the DMZ using the web interface. I have also set up a mapping rule to forward 6336 (all three entries pointed to 6336 in the Security/Applications/Forwarding section, following docs on port-forward.com for this specific model AND Verizon's own documentation). Occassionally, I can see the service is viewable from the likes of canyouseeme.org. Nonetheless, I cannot access the port: I get a connection refused error when using ssh on this port. Yes, I correctly configured ssh on the DMZ server/host to respond to the non-standard 6336 port, and I have tried it with the server's firewall system (ufw/iptables, for the curious) enabled and disabled. It NEVER works.
Some posts here have indicated I might need a static IP assignment. That can be done only client-side (meaning the Ubuntu server in the DMZ), if I understand people saying it is not possible to do static assignments from this **bleep** gateway, so I am not sure if that should matter (I wonder what happens with this **bleep** when two computers try to demand the same static IP; dare I guess that he asks first wins?). I cannot recall if I have uPnP enabled or disabled as I am at the office right now, but I believe it is off. Not sure if this matters either. If I am wrong, I would love if someone could let me know. I am at a loss and sick of dealing with such a simple problem. I would really appreciate the help.
Solved!
Go to Solution.

Ok.
#1 On your computer setup a Static IP.
This means following the directions at http://www.cyberciti.biz/tips/howto-ubuntu-linux-convert-dhcp-network-configuration-to-static-ip-con...
#2 The Static IP must be outside of that DHCP range of the router. So, this means your IP has be above 1 but below 64.
#3 In the router forward to the IP Address that you setup on the computer.
OR if the router can give the computer the same IP Address each time, you could do that.
If you are the original poster (OP) and your issue is solved, please remember to click the "Solution?" button so that others can more easily find it. If anyone has been helpful to you, please show your appreciation by clicking the "Kudos" button.

How to port forward with AirPort Extreme

I really just cant find an accurate description in the support community. Err, let me rephrase: I'm not tech-savvy enough to really comprehend all aspects of port forwarding within the AirPort utility.
I am trying to set up a server for a game (Starbound) and I have been trying for hours to open 1 port. I believe it connects through TCP on port 20125.
I cant seem to figure out which IP address the utility needs. The router's? Which IP address is the router's if so? How do I see that?
I wish server was freeware so badly, I've watched videos and tried to replicate the results manually but I just absolutely can't get it. Would really appreciate support on this, as I've never encountered this problem configuring port forwarding in a browser-based scenario.
Thanks all. All I really need is a walkthrough to open that ONE port.

For reference the following AirPort User Tip will give you the basics for port forwarding.
I cant seem to figure out which IP address the utility needs.
What is required is the IP address of the host device that you want reached from the Internet. In this case it would be the server hosting the Starbound game.
It is highly recommended that you configure your server with a static Private IP address. You can do this using the DHCP Reservation feature of the AirPort Utility. What this does is assign a dedicated address from the pool of addresses that are provided to local network clients. You will then use this address to populate the IP Address field for the port mapping. Note: Port Forwarding and Port Mapping are used interchangeably. Apple uses Port Mapping.
To assign a DHCP Reservation:
Start the AirPort Utility, select the AirPort Extreme, and then, select Edit.
Select the Network tab.
Click on the "+" button under the DHCP Reservations window.
For "Description," enter Starbound or whatever you want to describe this port mapping.
Reserve Address By: MAC Address
MAC Address: (Note: This will be the hardware MAC address of the server's Ethernet or wireless interface.)
IPv4 Address: [enter the desired IP Address that you want to assign the server. It should be from the available pool of DHCP addresses. By default this pool is: 10.0.1.2 thru 10.0.1.200. For example, you can use 10.0.1.100
Select Save
Using the reference provided earlier, use the AirPort Utility to define the port mapping that you require. (Note: You should still be on the Network tab.) I filled in the values for you. Note, however; that you may need to change the value for the IP Address field to the address that you set earlier in the DHCP Reservation.

Single port forwarding with a E2000.

I was wanting to port forward a port that was 25565 for a game of mine, but everytime I try it won't work. someone give me a walk through?
By the way, it's 7AM and I didn't sleep yet so i'll explain more detailed in the morning.
I'm using a E2000 Router.

Best thing would be to set a dhcp reservation for your pc/notebook and then set the port at the single port forwarding page to your int. IP.

RV220W - Port Forwarding - Different Ports

Hey,
I have a RV220W with 1.0.3.5 Firmware installed.
I also have a few servers with services I need to expose to outside the network (RDP and some websites) where the external port is not the same as the LAN port. I could accomplish this with my previous router using port forwarding and it looks like I can do the same here on the RV220W but I can't quite get it to work successfully. I would be grateful for any help / directions.
Thanks.

So here is how Port Forwarding is set up on the RV220W with firmware 1.0.3.5
In my example I needed to setup my :6001 to forward to an internal address for remote desktop, 192.168.1.12:3389.
First, as detailed above by Robert, set up the custom service you want the public address to be listening for. In 1.0.3.5 I found this under Firewall > Advanced Settings > Custom Settings. Add a new service speficying the name, protocol, and ports. For my RDP connection It was "RDP", TCP, and the Start Port and End Port set as "6001", the port that was listening publicly.
Next go to Firewall > Port Forwarding and add a port forwarding record. And set the following values.
Action: Always Allow
Service:
Destination IP:
Forward From Port: Same as incoming port
Forward To Port: 3389
Hit save and that should be it. The problem I was running into is I was setting the "Forward From Port" as the port I wanted to have translated, so 6001. This is already specified with the custom service I created, so when setting it twice it wasnt working.

Difference Between Port Forwarding and Port Triggering.

Hi guys,
I'm lost! The differences between port forwarding and port triggering is driving me nuts! It all seems very subtle to me. Can anyone explain to me (in a very simple way) what exactly are their differences. Thanks in advance!!

Port Forwarding
The big difference between this and port triggering is that forwarding is fixed.. you forward a port and it is always forwarded.. IE available to connection.. basically the forwarded port is excluded from the fire walling abilities of the router. Second it is static and applies to one machine only. Whereas you could set port triggering to the router and thereafter any machine on the LAN can trigger it unless its already in use.. port forwarding must be specified for each individual machine.
Port forwarding requires you to give each PC on the network its own unique static IP address.. Although there is ssh port forwarding that can be set dynamically. Most users only have the option of static ip port forwarding.
The real downside of port forwarding is that it can be very tricky to set up... You may have to allow a series of ports on a machine and have to do that for each machine you want to allow through. Also routers often have limited abilities and may not allow you the ability to forward a port or select the service you require.
Port Triggering
This is a way of Dynamically assigning a service to a port WHEN it is required by an outgoing service. The port is initially not allowed so nothing can get in and you are protected by your network.
A good example of this is when using Yahoo! voice .. the voice works fine for a few minutes after you connect to Yahoo! then Yahoo! sends some kind of packet that requires a response from your PC... The packet is allowed in through your router no prob but the outgoing reply is not authorized to open a port on the router and is thus blocked.
'ope this helps

Problem with opening/port forwarding some ports but not others

I read the Faq and the first few pages of the forums but couldnt find anything.
I am using the Port Forwarding (WRT54G, Firmware 4.20.7) to my network camera to try to open up ports 80, 554, 5556 and 5558.
Using the network toolbox at Blackcode.com I then check the ports to see if they are open.
Port 554 seems to be open. Port 80, 5556 and 5558 do not appear to be open.
I am using the correct external IP address (I can toggle port 554 open and closed and test that). Toggling Blocking Anon Internet Requests Of/Off makes no difference to the result.
I have checked with my ISP and they dont claim to block those ports.
Any thoughts on what this could be? Is there a way to test if its my ISP? If it is my ISP, is there a workaround?
Thanks for any help.

Are you sure the camera does listen on those port at the time you did this tests? Are those ports open inside your LAN, too?
5556 and 5558 look like RTP ports which may only be active after the channels have been established through RTSP.
Forwarding of port 80 is known to be an issue on various routers as the router allocates port 80 for the web interface. Sometimes it helps to change the remote management port on the router from 80 to 8080 or something else. You may even have to enable remote management to get this active.
If this does not work you have to reconfigure port 80 on your server to a different port if possible.
Message Edited by gv on 08-21-2007 12:28 AM

Port forwarding with natd

I have set up my Leopard Server with a public ip on Ethernet, 85.165.220.114, and a private ip on the Airport interface, 192.168.207.200.
This is working well, I can access my server with a registered domain name from the internet, with web, ssh etc.
Now I want to forward port 12000 to a device on my network with ip 192.168.207.245, and put this into /etc/nat/natd.plist:
<key>redirect_port</key>
<array>
<dict>
<key>proto</key>
<string>tcp</string>
<key>targetIP</key>
<string>192.168.207.245</string>
<key>aliasIP</key>
<string>85.165.220.214</string>
<key>aliasPortRange</key>
<string>12000</string>
<key>targetPortRange</key>
<string>12000</string>
</dict>
</array>
I have Firewall setup and running, and NAT running on my server.
Port 12000 is checked in Firewall, and that should be it.
Port forwarding should now work, but it doesn't.
Looking at Firewall log, it looks like the Firewall is doing it correctly:
Aug 10 11:02:46 leopard ipfw[66524]: 12315 Accept TCP 84.212.229.188:57224 192.168.207.245:12000 in via en0
Aug 10 11:02:46 leopard ipfw[66524]: 12301 Accept TCP 84.212.229.188:57224 192.168.207.245:12000 out via en1
So I am completely lost why this does not work as it should.
Ivan

I got it working at last. I removed the Airport, and made a second Ethernet interface in system preferences - Network. The second interface populated with the private IP address, and gateway with the same private ip (192.168.207.200).

Port forwarding with E2000 for a game called Minecraft.

Okay, I've been wanting to port forward this game called Minecraft for quite awhile now, but never got around to it, but now that I've wanted to let my friends that can't play with hamachi play with me. I wanted to port forward it so that they go into the game without using hamachi, or any other networking program. If anyone knows how to acomplish this with a guide for this then it would be nice, or just simply write out instructions. I've already tried once and whenever I ran my server, I would say "FAILED TO BIND TO PORT" or just ask me this "Is another _____ running on that port?" Thanks for helping guys,

Yea it looked okay. Go to cmd, then type in ipconfig. Look for your ipv4 address. Now make sure that address is the same as the one that you set up port forwarding for in your router.
Make sure you have reserved that ip by going to 192.168.1.1--->Basic Setup--->DHCP Reservation---> (your PC). Now restart your PC. The important thing is to make sure that your local ip matches everything (Port forward, server.properties, and the DHCP Reservation Table)
Now go to the .bat files that you downloaded for the minecraft server. You should see a file called "server.properties". Go into it and make sure that the server ip matches your local ip (192.168.1.4 for example). If not, change it. Here's a reference video: http://www.youtube.com/watch?v=6MJVNxPtmtM
I don't work for Cisco. I'm just here to help.

Port Forwarding with Airport Express 802.11n Utility version 6.1

Hi all,
Quick question, hoping it can be solved with a quick answer
Not sure what I'm doing wrong: I'd like to set up port forwarding for Skype and Transmission, however in the airport utility even when I assign the public/private ports to the ones specified in the respective programs (with the IP address for the machine I am using), if I go into Transmission or onto a port checker website the connections are shown as closed for the ports I have selected (on the public side).
I've made a DHCP reservation for this machine to tie it to a given IP address, and I've enabled NAT port forwarding protocol in the Network options (no default host so far).
Also, in case it makes a big difference, right now I'm connecting to the internet via a Cisco DCP3825 cable modem running in bridge mode, with the AEBS in DHCP and NAT router modes.
Any tips?
Thanks!

Sadly I never got it to work. I called up Apple and they claimed that all the ports are open for the Airport Express, but if I run port scanner in Network Utilities none of the ports I specify show up as open unless I select one of the "Default" port categories like "Windows File Sharing". I told this to the person I spoke to on the phone, and they replied several times in a row that they are not allowed to help set up port forwarding, that they can only provide info on how to open the ports, and that even if the ports are subsequently not opened or forwarded they can't provide any assistance. It wasn't a very good conversation. Unfortunately, based on some of the other disucssions I've looked at in this forum, it doesn't seem possible to do conventional custom port forwarding using this version of the Airport Utility. Hopefully someone will correct me though. Sorry I can't be more help.

Port forwarding with airport & external router

Hi,
I'm happy with port forwarding normally, but I've just made my network entirely wireless and can't figure out the answer to this problem. I have a non wired netgear router as my internet access point, an airport express is connected to this getting its address via DHCP, another airport is joined to this network, and 2 macs are connected to the airports again getting addresses via DHCP. How do I port forward to the macs using this setup? I can't figure it out. Obviously I'll need to configure manually, but if I open the port on my router and open the same port on the AX will they go throught to the mac ok. Do I map the router to forward to the AX manual IP then map the AX to a specific mac IP? Any tips appreciated before I go ahead and break my network
Emma

Emma,
Ok, here are my thoughts. Have you tried assigning static IPs via DHCP, not manual config, based on client MAC addresses? Meaning when the router sees an ethernet MAC address it always assigns the same IP to that machine. This should enable the handing out of IPs while retaining port forwarding to the same machine each time and still preserve the routing that DHCP seems to enable more betterer . I'm not familiar with the netgear setup and I couldn't get my AX performing satisfactorily for my needs either so I have returned it however this is a 'somewhat' common option when setting up DHCP on different routers and I have found it works better when daisy chaining through routers.
HTH,
Steve

Port Forward with EA4500 Cloud connect firmware

Installed my new EA4500 and trying to access my PC from internet (remote desktop) in order to do so I need to forward the TCP port 3389. In the old web admin page this option was easy to find and change. with the new cloud connect I can't find it. how do Ienable port forwarding on the EA4500? thanks

You can find port forwarding under Security. click on the "Security" icon on the left hand panel then it will open another window and there you will be able to select "APPS and GAMING" and that's where you can find Port Range Forwarding.

How to port forward with Modem and Router

I have a Linksys AM300 Modem and a Linksys WRT610N router.
I want to forward ports for Call of Duty Modern Warfare 2 and STEAM.
How do I port forward when I have 2 devices and how can I test that it is working?

I would recommend that you reconfigure your AM300 into bridge mode. In bridge mode it operates like a standard modem would do. Then reconfigure the WRT610N for your internet connection, i.e. most likely PPPoE. Now the WRT has a direct connection into the internet. Now you only need to configure port forwarding on the WRT610N.

Port Forwarding With Shorewall

I have Shorewall setup on my router, but even though I've read on how to set up port forwarding it doesn't seem to work.
Here's my /etc/shorewall/rules.conf
# Shorewall version 4.0 - Sample Rules File for two-interface configuration.
# Copyright (C) 2006,2007 by the Shorewall Team
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
# See the file README.txt for further details.
# For information about entries in this file, type "man shorewall-rules"
#ACTION SOURCE DEST PROTO DEST SOURCE ORIGINAL RATE USER/ MARK CONNLIMIT TIME HEADERS SWITCH HELPER
# PORT PORT(S) DEST LIMIT GROUP
#SECTION ALL
#SECTION ESTABLISHED
#SECTION RELATED
#SECTION INVALID
#SECTION UNTRACKED
SECTION NEW
# Don't allow connection pickup from the net
Invalid(DROP) net all tcp
# Accept DNS connections from the firewall to the network
DNS(ACCEPT) $FW net
# Accept SSH connections from the local network for administration
SSH(ACCEPT) loc $FW
SSH(ACCEPT) net $FW TCP 3000
# Allow Ping from the local network
Ping(ACCEPT) loc $FW
# Drop Ping from the "bad" net zone.. and prevent your log from being flooded..
Ping(DROP) net $FW
ACCEPT $FW loc icmp
ACCEPT $FW net icmp
# Accept DNS connections from the local network to the firewall
DNS(ACCEPT) loc $FW
# Allow Webmin access from local net
ACCEPT loc $FW tcp 80
# Allow Transmission Traffic
DNAT net loc:192.168.1.100:51413 tcp 51413
DNAT net loc:192.168.1.100:32000 tcp 32000
DNAT net loc:192.168.1.114:6881 tcp 6881
DNAT net loc:192.168.1.114:8881 udp 8881
DNAT net loc:192.168.1.1:80 tcp 1017
Here's my /etc/shorewall/policy in case it's needed
# Shorewall version 4.0 - Sample Policy File for two-interface configuration.
# Copyright (C) 2006 by the Shorewall Team
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
# See the file README.txt for further details.
# For information about entries in this file, type "man shorewall-policy"
#SOURCE DEST POLICY LOG LEVEL LIMIT:BURST
$FW net ACCEPT info
loc net ACCEPT info
net all REJECT info
# THE FOLLOWING POLICY MUST BE LAST
all all REJECT info
SSH works internally, but not externally, and ping works both inside and outside of the network, web browsing also works fine. I just can't seem to get to anything inside the network from outside of the network. What am I doing wrong?
Last edited by brando56894 (2014-04-02 04:04:34)

Even if the forum policy is more to give people the possibility to help themself, I'd like to post a (hopfully) working configuration for the case above, so everyone trying to use shorewall get an idea how it works.
If someone finds errors please let me know, so I can correct this post. Thanks.
/etc/shorewall/interfaces
# change interface to your external iface
net eth0 dhcp,tcpflags,nosmurfs,routefilter,logmartians,sourceroute=0
# change interface to your internal iface
# if running a dhcp server on your internal interface add ",dhcp" to the following line
# if the interface is a bridge add ",bridge" to the following line
loc eth1 nets=(192.168.1.0/24),tcpflags,nosmurfs,routefilter,logmartians
/etc/shorewall/zones
fw firewall
net ipv4
loc ipv4
/etc/shorewall/masq
# change interface to your internal iface
eth1 192.168.1.0/24
/etc/shorewall/policy
$FW all ACCEPT # FW may talk to everyone
loc net ACCEPT # LAN may talk to the internet
net all DROP info # Drop everything not in rules file
# THE FOLLOWING POLICY MUST BE LAST
all all REJECT info
/etc/shorewall/rules
SECTION NEW
### FIREWALL INCOMING ###
# MISC
Invalid(DROP) net all tcp # prevent connection pickup
Ping(DROP) net $FW # no ping from outside allowed
# ALL -> FW
ACCEPT all $FW tcp 3031 # SSH from internet and LAN
# LOC -> FW
Ping(ACCEPT) loc $FW # Ping from LAN to FW
DNS(ACCEPT) loc $FW # DNS from LAN to FW
HTTP(ACCEPT) loc $FW # Webmin access from LAN to FW
### FIREWALL OUTGOING ###
# not needed, because everything allowed in policy file
### DNAT RULES ###
# leaved out rules not found in network diagram
# add them using the same scheme
DNAT net loc:192.168.1.100:32400 tcp 32400
DNAT net loc:192.168.1.100:8081 tcp 8081
# the following may not work, as it redirects to the FW itself
DNAT net loc:192.168.1.1:80 tcp 1017
Last edited by Tarqi (2014-04-01 23:40:46)

How do you port forward with linksys routers?

It's all in the title.Message Edited by NaturalViolence on 10-19-200606:14 PM

to forward the ports, click this: Port Forwarding
Message Edited by Beetlebum on 10-19-2006 06:41 PM
"a helping hand in a community makes the world a universe"

Port Forwarding with Port Translation RV042, RV016, RV082

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