Cisco Switching/Routing :: Router 881 Range Port Forwarding
Apr 3, 2012
I have a Cisco 881 router in my office and I would like to do port forward for port 5060, and 10000 - 20000 to my PABX(192.168.1.61).After I did some research from internet, understand that we need to NAT by using following command to do port forward for port 5060.
ip nat inside source static udp 192.168.1.61 5060 XXX.XXX.XXX.XXX(WAN IP) 5060 extendable.However, now I'm facing an issue to perform port forward for a huge range of ports like 10000 to 20000.It is impossible to ask me add one by one?
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Jan 21, 2013
I have a Cisco 881 router in my office and I would like to do port forward for port 5060, and 10000 - 20000 to my PABX(192.168.1.61). After I did some research from internet, understand that we need to NAT by using following command to do port forward for port 5060. ip nat inside source static udp 192.168.1.61 5060 XXX.XXX.XXX.XXX(WAN IP) 5060 extendable However, now I'm facing an issue to perform port forward for a huge range of ports like 10000 to 20000.
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Apr 7, 2013
I am trying to open up port 32400 on my 881w Cisco router but I have not had any success I need to configure manual port-forward to enable my Plex Media server.
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Oct 17, 2011
I currently have an E1200. I can port forward single ports, but when I attempt to forward a range of ports it doesn't work and there is no error in the log.
Specifically I am port forwarding RTP ports (10000 - 20000). I am aware of the security risks, please do not preach.
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Aug 21, 2011
I have configured port range forwarding (8440 - 8449) for a single PC (192.168.1.134) and am unable to access these ports from outside my LAN. Conversely, if I set up single port forwarding for each of the ports in the range for the same computer then I am able to access from outside my LAN. Does port range forwarding actually work?
E1200 / 1.0.00 build 11 Jan 23, 2011
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Oct 3, 2012
I have a WRT160n that I am trying to forward some ports on for some DVR equipment. When I use the single port forwarding and enter each port separately it works fine. But I have 2 DVR's and they use a bunch of ports each so I want to use the port range forwarding because there are not enough spots in the single port forwarding section. The ports I am trying to forward are 8000-8004 for one IP address and 8005-8009 for a second IP address. I have entered it into the port range forwarding section but I can not connect from outside my network. As I said if I enter them in the single port section seperately as 8000,8001,8002,8003,8004 then I can connect fine outside my network.
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Nov 3, 2011
At the E4200 there is a limit of (free to make) 15 Single port forwarding and 15 port range forwarding to fill in.I get as suggestion that I must give up a total range of ports where all the ports I use where in.But for security reasons I will not do that.
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Jan 26, 2013
I'm trying to make the server work for minecraft and I have the port number for the port which is 25565.I just need to know where exactly to enter this information. I also know that the protocol is supposed to be set for both tcp/udp.
So basically I guess my question is, where exactly do I put the port number if the one given to me was 25565?
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Jan 14, 2013
I just setup my homelab today, after having Cat5e installed so I can run my servers and network equiptment over wired network as well as setting up a wireless system. I got everything setup and its going great I can access everything from my office now including a E4200 Linksys router that I setup to do RiP (was only choice pretty much, or NAT), and my 891 Cisco Router which is my internet connection.
I use to have the linksys setup to do port forwarding but now I need to figure out how to do it on the cisco 891 router via command line.
Below is my current configuration. I need to be able to access my server which is behind my router by Remote Desktop. I also have a web server, and the kids also play minecraft, and have a server setup so I need to be able to forward their port as well.
[URL]
Ths is from the link above, would I just do like that but then put in my IPs and is that my Private IP I use this or my public facing. Also he has "interface Dialer1 6881" again after the port in the second and third row. I dont really understand what they have there. I understand basic access list and such though I am extremely rusty.
!
ip nat inside source list 102 interface Dialer1 overload
ip nat inside source static tcp 10.0.0.2 6881 interface Dialer1 6881
[Code].....
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Oct 30, 2012
I need to open port range 554 - 558 to a DVR on the internal network. Also, I need to NAT one of my public IP's to the DVR. How is this accomplished in 8.4? I was able to do it in an older version ASA software.
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Mar 23, 2006
I’m having serious issues getting Tandberg H.323 working behind this router with NAT.
My setup is Cisco 1811 configured with Fas0 to pull DHCP (public address). This router is being used in a mobile medical clinic VAN so the setup needs to be seamless and transparent to the users. The idea with the DHCP is anywhere they go they could pull a DHCP address and then NAT behind that address. The van visits mostly small schools in the Texas Rio Grande Valley providing medical assistance and consulting to the local community. The router has an 8 port built in switch and all ports are sitting in default VLAN 1.
Basic stripped down config, only relevant commands listed…
ip dhcp excluded-address 10.0.0.1 10.0.0.4
ip dhcp pool VANnet
network 10.0.0.0 255.255.255.240
default-router 10.0.0.1
dns-server 10.0.0.1(code)
Now initially I can’t even get the call to connect with just using the ports above, which I should. Also knowing there are several issues with H.323 and NAT I went ahead and added all know ports Tandberg says they use…
80 HTTPd *TCP
443 HTTPs TCP
1719 H323/RAS UDP
1720 H323/Q931 *TCP
2326-2373 (2837)** H323/RTP UDP
5555-55xx (5587)** H323/H.245/Q.931 TCP
Basically I created static NAT entries for all the ports and the ranges above. For the ranges I had to add a line for every port.
This didn’t and hasn’t worked yet even with some additional tweaking… Finally the question… am I going about this all wrong? Is there an arrangement of commands that will even work? How can I accomplish the port forwarding setup on a Linksys/Netgear router on a real Cisco router?
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Dec 5, 2012
I have a network with multiple servers behind a PIX with 6.3 on it. I have one public IP address, and I'm using NAT. I'm currently trying to port my Exchange server to a cloud host, and the vendor is requiring I open up a wide range of ports for MAPI, basically ports 1024 on. What would be the command to forward all of the trafic cominto/from that broad range? if I could simply route all trafic to and from their two IP addresses to my email server, that would accomplish the same end goal.
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Sep 4, 2012
How can one forward a range of ports?
Suppose I have defined the following service:
Service: TEST
Port type: UDP
Starting port: 5060
Ending port: 5070
and I want to forward it to a specific IP. Then, if I create a new port forwarding rule for this service it asks me to specify a single port number to be used internally as:
Action: Always Allow
Service: TEST
Source IP: Any
Destination IP: 10.0.0.100
Internal Port: ?
I want to forward all ports from 5060 to 5070 to the internal range 5060 to 5070.
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Sep 12, 2011
I am not a tech guy but have to take care of some basic IT stuff. I had Ether fast cable/DSL router and it got changed with RV 120W router. there were comment that internet is now working slowly - what could be the reason for this?
I copied most of settings. First big technical problem was with phone. It stopped working - call could get through but when answered there was no sound. We use linksys modem for VoIP. I called operator and was told to disable sip alg. I did that and service improved a little. When answering a call sound could get through but would stop for few moments and then continue. Operator told me to forward port 16384 to 16482 to VoIP modem IP. But I can only set forwarding for one port at the time in "Port forwarding" settings. Is there a way to forward to port range?
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Jun 1, 2011
I have an ASA 5505 on a job. It is a smaller business that would have done better with an RV082, but they have what they have. It is running firmware 8.4. The client needed ports forwarded for their FTP server. The port range in this config is tcp 43333-43339. The FTP server ip is 192.168.1.2. [Code] ......
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Dec 1, 2011
I have my Cisco 881 router up and running, routing all traffic on my small network. I am wanting to utilize port forwarding to enable FTP (forward port 21). All docs I have found say you need to be running Configuration Professional (not Express) to do this.
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Nov 28, 2011
I have an problem with my new Cisco 876 Router. I configured port forwarding to access internal network devices from the internet . This works good from external but with my old Fritz box I was able to connect to this internal devices from the same internal network with the dyndns address.
So here is a short review for this:
DYNDNS Address port tcp 80 - > 192.168.0.80 tcp port 80
from ex tern it works but with source address example 192.168.0.20 to destination DYNDNS address tcp 80 (maps to 192.168.0.80 tcp 80 ) it doesn't work. Is there any trick in the config of cisco to let this scenario work?
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Aug 11, 2012
I need to configure the port forwarding on Cisco 887 to forward port 22 on Public IP to a LAN IP port 2200. I don't know anything on Cisco router at all, beside telnet to the cisco and quit . Any step by step command.
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May 2, 2012
I want to SSH into a Cisco 1841 router and depending on the suffix added to the SSH (i.e ssh myrouter.myroute.com 2002), would like it to forward this request to a terminal server.Can this be done? If so, how does one accomplish this? I have done something similar with RDP but I was not sure about SSH.
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Aug 23, 2011
I've 8 Static IP assigned me from my ISP.
x.y.w.56 (not usable)x.y.w.57x.y.w.58x.y.w.59x.y.w.60x.y.w.61x.y.w.62x.y.w.63 (no usable)Subnet 255.255.255.248
I've a 877 Router and I would to:NAT al LAN Client with x.y.w.57Configure some ports ( i.e. 80 and 443) to be forewarded from x.y.w.57 to one LAN Server ( i.e. 192.168.0.1)Configure some ports ( i.e. 443) to be forewarded from x.y.w.58 to another LAN Server ( i.e. 192.168.0.2)
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Jan 2, 2013
I feel like this has probably been asked a thousand times over, but it doesn't seem to work for me. TCP works fine. I can't find any definitive answers, I'm still a novice with the IOS.
The purpose behind opening the ranges of UDP ports to the interface and forwarding is because the people in question want to run a VOIP phone from their home, but they have a home grade Internet connection, so therefore no static IP. Also, they're not going to pay for a router to create a S2S VPN.
Also, from one of the remote sites for which there is a VPN ( the 192.168.6.X/24 site), the audio is only one way. The phone guy says "i need to open ports both way through the VPN), but I feel like that's already been done??
For my other site ( 192.168.15.0/24 ) I have an IPSEC over GRE tunnel going, I don't know about the status of the voice phone there..or if its even made it there
Here's my config...i'm redacting things like public IP's, VPN keys, and the like
#show run
Building configuration...
Current configuration : 6525 bytes
!
! Last configuration change at 14:51:00 EST Wed Jan 2 2013 by ctouch
! NVRAM config last updated at 14:57:46 EST Wed Jan 2 2013 by ctouch
[Code]...
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Feb 29, 2012
How can I implement this with Zone-based Firewall on my 1921?
I'm looking for something as simple as the port triggering function on a Linksys or Netgear router.
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Jul 11, 2012
Is it posible to config port forwarding on cisco 2950 or other switchs.if such a option is there ple let me know ho to config port forwarding on cisco 2950 switch..
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Dec 15, 2011
I have a non-cisco router with a public WAN address. This is conencted to a 3750 switch internally. The switch is the default gateway for all VLANs, and the gateway router has static routes back to the 3750. The Router provides NAT, no NAT is done on the switch.My requirement is to port forward port 29 000 so that I can access a server on VLAN4 via this port.
So, I have: Router: Port 29000 map to 192.168.4.1 (Switch VLAN4 address)
The question is, how do I route port 29000 from the 3750 to the server on 192.168.4.42 ? what exactly I should add in order to port forward port 29000 incoming form my router, to my server on 192.168.4.42.
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Mar 26, 2012
I have the above firewall which is working as it should but I have came across an issue with a recent upgrade to Microsoft Exchange 2007 and Outlook 2010 Autodiscovery due to the way the port forwarding has been configured for Outlook Web Access (OWA) on the router.
The router is forwarding OWA requests to the exchange server on port 8080 and the default website in IIS on the Exchange Server under which OWA sits and unfortunately Autodiscovery has been set with an SSL port of 8080. I think the reason for this is that we have an RDP server and the router is forwarding all port 443 requests to this server. Due to this Outlook clients cannot connect to Exchange through autodiscovery and cannot therefore get FREE/BUSY and a few other things.
I have 5 public IP addresses and only use two at the moment, one on the ADSL router and one on this firewall. I have no spare interfaces on either the router or the ADSL router.
My question is, is it possible to have a secondary ip address set on the public facing interface and set different rules for this IP which would allow me to forward requests on that IP to a different server?
Cisco IOS Software, 2801 Software (C2801-ADVSECURITYK9-M), Version 12.4(16b), RELEASE SOFTWARE (fc3)
Building configuration...
Current configuration : 4778 bytes
!
version 12.4
service timestamps debug datetime msec
[Code].....
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May 15, 2013
I've created some port forwards from my public IP (Dialer0) to our private LAN but only the 25565 port forward works. I've even added an any statement to the Nat source list Homenet_NAT. Full config attached. My Cisco router is an 877W. [Code]
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Nov 6, 2012
I have a 3750 catlyst switch in my network and it is like a distubation switch,And for the nating and dhcp nomadix is using as gateway in the same network. for one of my local PC i need to config the port forwarding in 3750 switch. How to config the port forwarding on 3750 switch,
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Aug 13, 2012
I'm just setting up a Cisco rv180w router to replace our aging Belkin. I need to allow a range of ports through the firewall to a particular PC on our internal network that runs our VOIP/SIP Trunk phone system.
The Cisco's Port Forwarding looks like it can only forward one port at a time, but for our phones I need to allow a full range of ports (in this case ports 49152-64512) to one machine at 192.168.x.xx.
On the Belkin I used something called 'Virtual Servers' which allows you to enter ranges of ports. Anybody know what the equivalent might be for the Cisco router?
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May 5, 2011
My Comtrend WAP5813n router, seems to be failing at port forwarding as I have configured it to forward ports,all the port checkers (offline and online) say those ports are open, yet I cannot access through them,it just fails to forward them(My server isn't blocking anything because it has worked on a previous router).
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Oct 1, 2012
port forwarding this im trying to setup a minecraft server with bukkit and i tried a number of things to port forward and it won't open port. I have a tomato firmware linksys router and a qwest modem.
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Jul 29, 2012
how can I show the DHCP-range of a router if I don't have privilege level? (not in enable-mode),I can do a "show ip dhcp pool" - this will show me the range which is configured with the network-command.But there are also some dhcp-exclude-addresses which I can't see.... (I did a test on a router with full privilege-access)I need this because I have a router with limited access from our provider.
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Apr 29, 2013
Probably this is a trivial question but I have not found any response to it. What I would like is to set my cisco 877W rotuer up in order to act as a DNS server which forwards DNS queries following these simple rules:
1.- If the name is within my local domain *.ib forward them to my local DNS 172.21.238.229 and .230, and
2.- Else forward them to the chosen public domains (i.e. 8.8.8.8 and 8.8.4.4).
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Aug 14, 2012
I've recently set up a PC-based IP PBX in our small business which uses a SIP Trunk for up to 3 simultaneous voice calls. Ports needed to operate include 5060 (SIP-UDP) and then a huge range of high-number UDP ports which I believe is for the 'media' or audio. Let's call the range UDP 49,152 to 64,512. I only know a little about the SIP protocol but my understanding is that each call will randomly use a few ports from this range across which will pass audio, Is there a need to have such a wide range of ports open? If my SIP trunk is only capable of 3 simultaneous calls then it seems only 9 or so of those open ports could get used at once. Could I not just open, say a range of 100 ports and be fine, thereby reducing the security risk?
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