RV016/RV042/RV082 Internal port forwarding

Hi!
I'd like to setup a WCCP in those routers, but as I read, it's not possible.
Another way to circumvent this limitation is to foward a request to the router from the LAN port 80 to a LAN IP, something like:
LAN 1 192.168.1.100:80 -> router -> LAN 2 192.168.1.101:80
Is that possible?
Thanks!

I managed to accomplish that by creating a Linux Proxy configured as a bridge and intercepting requests to port 80.

Similar Messages

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.

RV042 Port forwarding stops working when Firewall is enabled

Hey all,
I have a RV042 router on a single WAN and an internal LAN. I have configured port forwarding as follows:
HTTP[TCP/80~80]->10.0.0.6
HTTPS[TCP/443~443]->10.0.0.6
IMAP[TCP/143~143]->10.0.0.5
IMAP SSL[TCP/993~993]->10.0.0.5
SMTP SSL[TCP/587~587]->10.0.0.5
Everything works just fine when I have the firewall DISABLED. However, when I enable it the behaviour is erratic. 1 out of 10 attempts to connect to ANY port forwarded works. Almost all attempts time out.
Notice that this happens even if using only the default firewall rules (which should be bypassed by the port forwarding as I read in other posts).
My second try was to create firewall rules manually, overriding the default ones. I tried adding rules from source WAN1 (where my connection is) to ANY and to SINGLE IP's on every port. Nothing seems to work.
I don't know what I'm doing wrong, this is really bugging me. I had to turn the firewall off so we can access our servers from outside the office. This shouldn't have to be done.
Do you know anything I could try?
Best regards,
Theo
EDIT:
Just found out that my firewall is getting LOTS and LOTS of Blocked - SYN Flood entries. I think this is why we are having trouble with the firewall. Could this be the problem? I have no idea where all these SYN packets are coming from since they appear with spoofed IPs or come from different bots all over.

Hi Theo, if you want to over ride the default state table, you need to first make firewall rules to block all access then make your permission rules.
Such an example would be-
Action Deny
Service All
Source interface WAN
Source IP any
Destination IP any
Save
Action Permit
Service RDP
Source interface WAN
Source IP -xx.xx.xx.xx
Destination IP - xx.xx.xx.xx
Save
As for your concern about the syn flood, it can be a likely cause of your problems. Does the logging facility of the router give any indications?
-Tom
Please mark answered for helpful posts

RV042 vpn&port forwarding problems

Hello,
I spent a few days trying to configure the RV042 router but I messed up. I need this router for VPN access on my site and Port Forwarding to an internal web server. Apparently very simple task, isn't it?
So:
1. PPTP is working fine but I need more than 5 concurrent accesses.
2. Quickvpn does not work when the DHCP server is checked and I can't access any computer from my lan. I have a DHCP server in my LAN but when I'm conected through Quickvpn I never reach it. In the log file there are messages like:
Connection refused - Policy violation TCP 169.254.x.x->192.168.1.2 (DHCP server from my lan)
3. On Setup > Forwarding I added a Port Range Forwarding for HTTP port 80 to an internal IP address (192.168.1.x). I although added a firewall access rule to allow traffic to Port 80 from any source interface and any source IP to 192.168.1.x.
From the internal LAN, using the WAN IP of the router, the Port forwarding works but not form the outside, though in the log file of the router it appears to work:
Connection Accepted TCP 208.64.252.230:33027->192.168.1.x:80 on ixp1
What could I have done wrong?
The router is configured with a static address as a gateway and it has the latest firmware 1.3.12.19-tm. The access rules are the default ones and the one I added.
Any help would be much apreciated.
Thanks.

Can't answer as to why QVPN fails when you enable DHCP on the router, but concidering your requirements it seems to be a moot point. So, you have a DHCP server on your network which I will guess is also running your Web service. If this is a Windows server does your current configuration allow you to enable PPTP on it? If so, that would solve the five user limit. You will need to turn off the PPTP server on the router and then forward port 1723 TCP to your server and you are done. As for your http access, remove any rule that you have in reference to "allow" port 80 connectivity to your web server. Not sure why but this tends to confuse the poor little things. Once you have verified that port 80 is active on the server via the LAN (which you already have) then you are done. If you are still not successful with the connection to the server from the WAN you may want to default the router and start over (lame I know).
*** SORRY, just noticed that you stated that you added a "port range" forwarding rule. Remove that, and configure a UPnP rule for the same server instead. Do not know why they call it that, they just do. This is the same as configuring a single port forward they just call it something different. So just port forward 80 tcp to your server on 192.168.1.x and you are done.

Port forwarding RV016

Hello to all cisco experts!!
Hi guys im new here, I need ur help, I've got a Cisco small business router RV016. At first I have no problem in port forwarding because our first ISP install with simply DSL broadband modem, for some issue on our first ISP, our company acquire a new DSL connection on a different ISP. My problem now is our second ISP install to us a DSL modem with 4 ports built-in router so how can I forward a port for our Remote Desktop Connection (RDP) in our Cisco RV016 while the Public IP address is in the Second ISP router. I know I can use the port forwarding feature on our Second ISP router, but I would like to use the port forwarding in our Cisco RV016 because we also use the the VPN client access feature in our Cisco RV016.
Is there a way to solve my problem guys? I highly appreciate all your helps, thanks in advance.
Ricardo Trupa

Ricardo,
My name is Ismael. Iam with Small Business Support center and do appreciate you reaching out to us. From what you have described to us is that you having issue with port forwarding with RDP (3389). I am also understanding that you have a Modem/router combo from ISP and then the RV016.
For port forwarding to work, you need two rules one on your modem/router and one on your RV016 . So its source ip address will be the LAN of this modem and destination is WAN ip address of the RV180. Another rule is then configured on RV180 WAN pointing to LAN of the internal device you trying to reach. So its source ip will be the WAN on RV016 and destination will be LAN ip address of the internal device you trying to reach. This type of double port forwards can be complex and unstable. So if your network allows for configuration changes then you modem can be set to bridge mode, to simplify things and have them working for you all the time.
The single port forward can still be done, but it would require for your ISP to fully bridge your Modem. This will allow for RV016 to receive a public ip on WAN1. Once bridged only one rule is required on your RV016. Hope this helps you.

RV042 - Port forward/translation from ext to int

Hy,
I recently buy a CSRV042-EU. I need to make a translation port to acces remote some of my server on lan.
I use a primary WAN with static IP 83.166.XXX.XXX .The LAN has aprox. 30 clients.
I want to acces remote one of the computer from LAN, as example:
83.166.xxx.xxx:10101 -> 192.168.10.10, using 10101 as external port and 3389 as internal port for remote on 192.168.10.10 machine
83.166.xxx.xxx:10102 -> 192.168.10.11, using 10102 as external port and 3389 as internal port for remote on 192.168.10.11 machine
I don't konw how to do this forward because in Port Forward i cannot find the option to enter teh ext port and the int port.
Could you please help me with an example, how ca i make this forward?
Thank you !

I know it's been this long post, but I have the following question ...
I have several external IPs and would like to designate for each type of service.
eg:
200.0.0.1 => http => 10.0.0.2
200.0.0.2 => https => 10.0.0.1
How could this setting in RV?
Today I have two models in the network-to-VPN Gw Gw the RV016 and 042.
Regards,

RV016 - Port Forwarding

I have an RV016 router with 2 Fibre WAN connections on it. I have two internal servers with resources I need available externally.
I would like WAN1 to forward port 443 to server 1 and WAN2 to forward port 443 to server 2.
It does not appear this is possible as you do not have the option to select which WAN port you want the port forwarding for and can only forward ALL traffic on 443 to one internal server.
Does anyone know if this is possible or not?
Thanks

Hi Wbtadmin1,
You can use Port access translation which you can translate the port for example if you have two server listen in the same port such 443 , with port access translation you can choose an external port and internal port.
configuration :
Please follow this steps:
1. Please remove the rule of the port forwarding
2. Go to Setup under UPnP , service management and you will see external port and internal port so please configure external port to xxx and internal to 443 and click add, please do not enable UPnP
3. on the same page please choose the service you created and put the internal IP of the server A
4. for the second rule is the same just change teh external port to yyy and in internal 443 and put the second server B as internal IP
if you want to access to server A : publicIP:external port xxx
if you want to access to server B : publicIP:external port yyy
Now we want to restrict Client to access to server A from WAN 2 and allow only from WAN1
Under Firewall -- Access Rules
- Allow service (you can create custom service for external port xxx) from WAN1 to Server A
- seconds Access rules Deny Service (custom service xxx) from WAN 2 to Server A
- The same for server B
N.B : for Protocol Binding is working from LAN to WAN it means if you want to force Server A to communicate outside through WAN 1 or WAN 2
Please rate the post or mark it as answered to help other Cisco customers
Thanks
Mehdi

Port forwarding Cisco RV042 / RV042G

Hi,
we use three Cisco RV042 small Business Routers.
The problem:
We want to forward HTTPS on Wan-side to an other port than 443 on Lan-side.
For example: Wan 217.44.55.66 port 443 to 192.168.0.5 port 5001
There is only this option in RV042 : Forwarding -> Service HTTPS [TCP/443~443] to "IP-Adress" (also Port 443)
but we need something like this:
Forwarding -> Service HTTPS [TCP/443~443] to 192.168.0.5:5001
How can I configure it ?
Greetings from Germany
Goetz Hartwig, ITUC GmbH

Hi Ituconsult1
My name is Mehdi from Cisco Technical Support, yes with RV042 we can translate the port
Please follow this steps:
1. Please remove the rule of the port forwarding
2. Go to Setup under UPnP , service management and you will see external port and internal port so please configure external port to 443 and internal to 5001 and click add, please do not enable UPnP
3. on the same page please choose the service you created and put the internal IP of the server server
Please rate the post or mark it as answered to help other Cisco customers
Greeting
Regards
Mehdi

Cannot Port Forward RV042 in "Router" Mode

I use an RV042 exclusively as our VPN host to our main network for branch office connectivity. The RV042 is configured in Router Mode and does not provide Internet / NAT access to the LAN. I would like to add an additional role to this unit by having it Port Forward web requests to an internal Web Server. It appears that the router cannot do Port Forwarding while configured in Router mode; can you confirm this to be true? Is there a work around or an alternate configuration that would allow me to port forward web requests from the Internet to my Internal Web Server and still keep the RV042 in Router only mode?
Thanks

Mike,
The port forwarding feature only works in the context of NAT. This is true for all small business routers.

RV082 port forwarding limited to 30 entries ?

Hello,
we use RV082 as main gateway and need to open/forward around 50 ports to inside. But during setting of the rules I got an error message "The max of Port Range Forwarding is 30 entries. You can't add any more.".
In the online help is explicitely said "4. Click the Add to List button, and configure as many entries as you would like."
How can we setup more than 30 port forwarding rules ?
If it is this a sotfware bug, can this be corrected ?
Regards,
Petr Svoboda

Petr, I agree with tekliu. I use the UPnP rules with UPnP disabled for all of my port forwarding, unless a range is needed. They should not cause any more exposure than regular Forwarding rules, and if you use port translation they will reduce your exposure.
The only differences:
Forwarding allows port ranges
Forwarding has a "Port Triggering" section
UPnP allows port translation (because it's only single port at a time, not a range)
UPnP has unlimited entries

RV016 Wired 16 Port Cisco Router Port Forwarding Functions

Thank you for your time. I have created and attached a Word Document discussing the Cisco Model RV016 16 port wired Router port forwarding functions for your review. I would appreciate your time in reviewing it with your comments and suggestions.
Thank you very much,
Eddie LeFiles
850-471-1271

Thank you for your time. I have created and attached a Word Document discussing the Cisco Model RV016 16 port wired Router port forwarding functions for your review. I would appreciate your time in reviewing it with your comments and suggestions.
Thank you very much,
Eddie LeFiles
850-471-1271

RV016 port forwarding by WAN port?

Hi,
I am replacing an ancient SOHO 90 series router with our new RV016, I was told this thing would do everything we needed which I didn't doubt, however, I am wondering if I made the wrong choice now. We have 5 IP's on one line coming into the current router, that isn't an issue, if needed I can make 5 seperate drops with each IP, but, now we have several servers hosting services on the same ports. For example 5.2 host a web server which is called to by the .250 address, 5.3 has one as well from .251, we have one on each of the 5, there are other servers too though on each of the 5 using the same ports. When I go to port forwarding the only option is to forward the single port to a single server, can I not forward ports from each WAN connection to a different server? Any help would be appreciated.
Here is a short sample from the old soho of what I want to do
ip nat inside source static tcp 192.168.5.5 443 *.*.*.250 443 extendable
ip nat inside source static tcp 192.168.5.6 443 *.*.*.251 443 extendable
ip nat inside source static tcp 192.168.5.5 80 *.*.*.250 80 extendable
ip nat inside source static tcp 192.168.5.6 80 *.*.*.251 80 extendable
ip nat inside source static tcp 192.168.5.22 80 *.252 80 extendable
ip nat inside source static tcp 192.168.5.22 443 *.252 443 extendable
ip nat inside source static tcp 192.168.5.96 6437 *.251 6437 extendable
ip nat inside source static tcp 192.168.5.96 6438 *.251 6438 extendable
ip nat inside source static tcp 192.168.5.96 6439 *.251 6439 extendable
ip nat inside source static tcp 192.168.5.93 7437 *.251 7437 extendable
ip nat inside source static tcp 192.168.5.93 7438 *.251 7438 extendable
ip nat inside source static tcp 192.168.5.93 7439 *.251 7439 extendable
ip nat inside source static tcp 192.168.5.101 8437 *.251 8437 extendable
ip nat inside source static tcp 192.168.5.101 8438 *.251 8438 extendable
ip nat inside source static tcp 192.168.5.101 8439 *.251 8439 extendable
ip nat inside source static tcp 192.168.5.90 9437 *.251 9437 extendable
ip nat inside source static tcp 192.168.5.90 9438 *.251 9438 extendable

The multi-WAN feature of RV016 is designed for redundancy and load balancing, so basic port forwarding is not tied to a specific WAN port. If a LAN server is exposed to the internet by the 1-to-1 NAT feature of RV016, the server can be accessed by a specified public IP address.

RV042 Port Forwarding bypassing ACL

I have a RV042 with Port Forwarding configured for RDP. This Port Forwarding Rule is being applied before my ACL - so subnets that are not authorized through are being allowed in. Firmware version 4.0.0.07. Any help would be greatly appreciated.

Hi Eric, the default state table may be the problem.
Try to make an access rule something like-
Action Deny
Service All
Source interface WAN
Source IP any
Destination IP any
Save
Action Permit
Service RDP
Source interface WAN
Source IP -xx.xx.xx.xx
Destination IP - xx.xx.xx.xx
Save
-Tom
Please mark answered for helpful posts

RV042 Firewall & Port Forwarding

I am installing a RV042 on a client SBS network. In the configuration, I notice that there is a place for port forwarding where I guess I could open the ports for smtp, http, https, ...
But there are also access rules in the firewall section which seem to be the same except that you can schedule them.
Question is, do I need to configure both, or if only one of them, which one?
Thanks in advance for the advice.
Bob Showalter, Packer International

Bob,
You only need to configure port forwarding, unless you want to specify a source and destination that the packet is allowed or denied; then you would use both.
hope this helps,
Jasbryan

WRT160Nv2-Problem with Single Port forward to multiple servers with same internal port numbers.

On my network I have 3 systems that I've set up as RDP hosts. And need to get to all three of them externally. So I'm trying to do the following single port forwarding.
RDP 1   Forward 4000 to port 3389 for 192.168.1.11
RDP 2   Forward 4001 to port 3389 for 192.168.1.12
RDP 3   Forward 4002 to port 3389 for 192.168.1.14
When I hit "Save Changes" I get the error "Port range already exists". So it's good that it won't let me overlap ports generally, but at the same time, I'm trying to send them to different IP address. There should be no overlap in this case. Please advise
I'm trying this on the WRT160Nv2 with firmware 2.0.02, which I had just bought this weekend.

kevj,
Thanks for your suggestion. I have now upgraded the firmware to 2.0.03 build 7. But I am still seeing the error message
As I mentioned previously, I'm trying to single port forward to multiple machines in the following way:
Machine 1:   Forward 4000 to port 3389 for 192.168.1.11
Machine 2:   Forward 4001 to port 3389 for 192.168.1.12
Machine 3:   Forward 4002 to port 3389 for 192.168.1.14
The error appears to be generated by the fact that 3389 is selected for multiple external port numbers, but the same internal port number. The router I believe isn't taking into account that the similar internal port numbers aren't taking into account the different internal ip address I'm trying to send this to.
This would be a standard sort of practice for running a live HTTP server on one machine, and a new beta HTTP server behind the router on a secondary machine on the same internal port, but different external port numbers for test purposes from the outside.
Please advise
Thank you.

RV016/RV042/RV082 Internal port forwarding

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