Cisco :: Forward A Port On An ASA 5505 To An Internal Ip Address?
Apr 24, 2012
I have been asked to "forward a port on an ASA 5505 to an internal ip address." Sounds easy for most of you, and I thought I did it right, but I am not certain. Basically, they want it set up so that when xx.xx.xx.xx:30000 (x's = the firewall ip with port 30000) is accessed from outside, it is forwarded to an internal ip on port 30000 (xxx.xxx.x.xxx:30000)
Here is what I tried from within ASDM 6.4:
1. NAT Rules-add static NAT route:
original-Interface: inside
-Source: xx.xx.xx.xx (local ip of computer on LAN they wish to access from outside)
Translated - Interface - Use Interface IP Address
Enable PAT: Original and Translated port both set to 30000
2. Access Rule - add
Interface: Inside
Source: any
Destination: xx.xx.xx.xx (IP of Firewall)
Service: tcp/30000
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Jul 8, 2012
I have an old ASA 5505, and I'm having some trouble with Nat Hairpinning. I've done this with other firewalls before and I am having no luck now. I have an internal address that I wish to forward from an external address- so if someone goes to 123.456.789.012:3456 then it will forward to 192.168.1.244:92 (All numbers are arbitrary here- only for illustration). I have and Access Rule and NAT and PAT set up so that I can get in if I originate from outside the LAN. What I am trying to do is to have this work from inside the LAN as well- so that if I am at my desk, and I connect a device and type in 123.456.789.012:3456, it will deliver the content at 192.168.1.244:92. The problem I am having is that it just isn't working, and I cannot figure out why- When I started here, there was an address configured to work this way, and it still works- I just cannot find what is different between what I am doing and what the person who configured it did.
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May 30, 2013
I have an old ASA 5505, and I'm having some trouble with Nat Hairpinning. I've done this with other firewalls before and I am having no luck now. I have an internal address that I wish to forward from an external address- so if someone goes to 123.456.789.012:3456 then it will forward to 192.168.1.244:92 (All numbers are arbitrary here- only for illustration). I have and Access Rule and NAT and PAT set up so that I can get in if I originate from outside the LAN. What I am trying to do is to have this work from inside the LAN as well- so that if I am at my desk, and I connect a device and type in 123.456.789.012:3456, it will deliver the content at 192.168.1.244:92. The problem I am having is that it just isn't working, and I cannot figure out why- When I started here, there was an address configured to work this way, and it still works- I just cannot find what is different between what I am doing and what the person who configured it did.
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Oct 12, 2012
Is it possible to create a service which will forward public port 9010 to an internal IP address with port 23?First of all, I do not like to open the public Telnet port to the inside so I would use another public port and second my ISP does not allow some public ports beneath port 80?
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May 4, 2011
I have a couple of ASA 5505's which work fine for what they are doing VPN and all that - we have 1 DLINK DFR-700 Firewall left and I need to get a new ASA to replace this since it is old.
All this box really does is port forward external clients to 1 address on the internal lan for client software updates. Any example configs?
So lets say we have client a with IP 1.1.1.1 and client b has 2.2.2.2 - at the moment this is what happens client a and b come in through http and get mapped to the internal http server 10.10.1.2
So I need to setup about 100 clients which can come in through http only - get mapped to the internal IP and also keeping the internal server to be able to access anything outside.
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Feb 21, 2012
I'm new to the Cisco world and have so far got internet and VPN working (without SDM) using the IOS commands.I have hit a stubling block with port forwarding ports 80 (http) and 443 (https) to my small business server for outlook web access.I need to forward port 80 and 442 to internal LAN server 192.168.10.1.The Cisco 877 has a local IP address of 192.168.10.254. [code]
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Feb 27, 2011
I have a cisco asa 5505 and i need a public ip address on the inside of my network without NAT. for example: I can create a static nat translation rule, but this is not what i need.
isp -> x.x.x.1 /29 (outside asa) (inside network) x.x.x.2 /29
Is this possible?
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Mar 29, 2012
We are in a planning phase of adding another service to our DMZ. The DMZ has a singe publicly accessible IP. We are running Citrix inside our network externally accessible via w121eb https (443). Another service will be added to the DMZ (Exchange/O365) requiring ADFS & and ADFS proxy also using port 443 as well. Both services (the Citrix secure gateway & ADFS) will have separate subdomains but directed to that same IP, each with its own cert.
Now, I guess the question is: How (if possible) can we forward the public requests to the two services that hit our network on the same port (can't change the port on either), to two separate appliances with their own internal IP's internally?Our current appliance on the DMZ is an ASA 5505. Also could use a PIX
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Jul 12, 2012
I recently installed a First Alert Security System and assigned IP address to the DVR but within the DHCP (After reading many threads, I will asssign, ping and create a static IP outside of the DHCP, maybe this will resolve the issue). I am able to view the cameras on my iPhone and HP Laptop but only internally on my network. I am trying to port forward my DVR IP address to be able to view the cameras on a public website. Although I am going to chcek and see if assigning an IP to my DVR outside of the DHCP and hopefully this will be it, I am afraid that my CradelPoint CRT 500 Modem will not support it. I read on one thread that this is a common issue after you have exhausted all the options. How can I be sure that my modem supports that my router port forwards? I want to avoid configuring to run in bridged or pass-through mode.
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Apr 22, 2013
I'm trying to set up a minecraft server i have the correct ipv4 adress and port but for some reason its still closed?
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Nov 20, 2011
I want to have my port 4 on the asa 5505 only allow access to the internet and not the internal network, what do i need to do?
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Nov 2, 2011
I have a RV042 using (for now), just the single WAN interface. I am trying to forward all packets to port 9000 from the WAN to a single IP address on the network. I've set up both forwarding rules under Setup -> Forwarding and under the Firewall -> Access Rules.I cannot connect to my device from the outside world, however. Is there something I'm missing?
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Dec 19, 2011
I have an ASA 5505 configured with internal network, a DMZ, and a VPN on seperate subnets. The implicit rules allow my internal client computers to connect to the web servers on the DMZ IP, but I can not connect to the public NAT address from the internal network. I have a DNS server on my internal network and it does resolve to the public IP correctly. NAT seems to be working correctly because if I go outside the network and connect to the public IP or qualified name then I can get to everything correctly. I do not see any messages in the Cisco logs and the packet trace tool shows the route of http from an internal IP adddress to the external (NATed) address is allowed.
Specifically, I can go to http://192.168.1.121 from the internal (192.168.0/24) network, but I can not go to http://72.22.214.121 (the NAT address) from the internal network. If I am outside my cisco then I can go to http://72.22.214.121 easily. [code]
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Dec 27, 2011
I have Cisco ASA 5505 Firewall with security plus license, Currently I open ports on 25,80,443 on public IP address 1.1.1.1 and perform static nat between the inside and outside IP address Such as i configured via CLI
access-list OUT_IN extended permit tcp any host 1.1.1.1 eq 80
access-list OUT_IN extended permit tcp any host 1.1.1.1 eq 443
access-list OUT_IN extended permit tcp any host 1.1.1.1 eq 25
[Code]......
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May 26, 2012
We have 2 TS (Terminal Servers) and have configured the 1st RDP using my public address (say 8.8.8.8) on port 3389. it is working very well of course. However I need setup my 2nd TS but will use port 7777 on the same public address which is not working.I am using ASDM 6.3 and firmware 8.3.1.Is this a limitation for this IOS?
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Nov 26, 2011
I am new to the ASA series and I am at a complete loss as to why I cannot configure this router to forward SMTP and RDP traffic to an internal host.
The packet trace tool in ASDM shows complete end-to-end connectivity for RDP but it still fails to connect from outside. This is my config file, what I need to change in order to make it work?
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Nov 7, 2011
I have one server 172.16.0.100 and i nat this server to a public ip X.X.X.5 and i open RDP for this public ip.Now when i access Remote desktop on this public ip x.x.x.5 it open perfectly.Now my senario is that i want to open a http url on port 5555,server ADMIN open port 80 for this URL on LOCAL lan(http://172.16.0.100:80)So how can i map port 5555 to port 80 on ASA 5520.so when i hit URL [URL]
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Mar 6, 2012
I am having an issue where occasionally the Sidewinder starts to see my internal RFC 1918 address instead of the configured external address of my firewall. This is for peering between the two. The error they see on the Sidewinder is:So instead of seeing the external peer address he sees a 10.220.3.18 address. We are not sure what triggers this becuase normally he see's my 63.117.98.222 address.
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Nov 18, 2012
Region : Italy
Model : TD-W8968
Hardware Version : V1
Firmwae Version : latest
ISP : telecom italia business on ipatm
How to Forward an external wan port like 49150 to lan ip on port 22?In the control pannel I can set only one port , and this port will be the same where the connection will be router to the lan ip ,therefore If I set the port 22 , the connection will be natted to the 22, but how to set a different external port to a specified different lan ip port?
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Sep 18, 2012
I have only recently noticed a HUGE decrease in my Utorrent speeds, so i thought i would have a gander and lo and behold.apparently the port Utorrent uses wasn't open. Now, i have tried about 10 different port numbers, made sure Utorrent is being accepted by Norton 360 Firewall,followed complicated directions to (i think) foward ports, and also follow directions to open a specific port.Nothing has worked so far, Utorrent still comes back with a port closed error.
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Oct 11, 2012
Is it possible to create a service which will forward public port 9010 to an internal IP address with port 23 ?
First of all, I do not like to open the public Telnet port to the inside so I would use another public port and second my ISP does not allow some public ports beneath port 80
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Mar 7, 2013
Region : UnitedKingdom
Model : TD-W8970
Hardware Version : V1
Firmware Version : 0.6.0 0.11 v000c.0 Build 121203 Rel.46289n
ISP : Virgin Media
Is there any way of forwarding an external port to a different internal port on the TD-8970 ?I saw a question posed on an Australian forum implying that it might be provided in a later firmware release.Our TD- 8970 has replaced a previous NetGear WAG 320N which had this facility, and is useful to provide access to multiple machines without having to modify each individually to use a different port.
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Oct 19, 2011
I'm trying to forward a site (ex: facebook) to another ip address or site (on another computer). Just wondering if it's possible by editing settings in the router (I do not have access to the 2nd computer but it is on the network).
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Jan 28, 2012
I have a couple of domains and servers. I want to forward my domains to my local IP's. Currently, my domains only forward to my WAN ip and then handled by ports. The problem is that I have a lot of the same applications using the same ports.
How do hosting companies do [URL[ For more clarification, This is kind of what I want to do - Domain.com --> 76.xx.xxx.xx --> 192.168.1.xxx ^My domain^ ^My WAN IP^ ^My LAN IP^
Do I need a DNS server? Do I need a proxy server?
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Nov 7, 2011
I need to forward some ports for remote desktop and remote outlook which I host on an internal server. I have looked all over the web and got close, but no hints on how to do it in the asa 8.2. there is an 8.3 guide, but it is just different enough to not work. I am new to this device and cli.
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Jul 18, 2011
I currently have two Cisco ASA 5505. They are at different physical sites (SITE A, SITE B) and are configured with a site-to-site VPN which is active and working.
I can communicate with the subnets on either site from the other and both are connected to the internet, however I need to ensure that all the traffic at my site B goes through this VPN to my site A.
I changed this access-list : access-list outside_2_cryptomap extended permit ip network_siteB network_siteA to access-list outside_2_cryptomap extended permit ip network_siteB any
But this does not work. If I do [URL], site B IP address is not same that site A.
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Mar 11, 2011
I have an ASA 5505 running 8.4(1), and I'm configuring it with ASDM 6.4(1). The outside interface is configured with a single static address. I have a few services port forwarded sucessfully to three different servers on the inside network.
I need to make a media proxy on a SIP server available to the outside. It requires a large range of forwarded UDP ports for the media channels.
I tried adding a network object NAT rule like the others I'm already using to forward HTTP and RDP. I entered a range of ports for the real port and the mapped port using the syntax 60000-60999. ASDM accepted it, but the NAT rule list displays "Any" in the service column. When I apply the change, I get the following error:
nat (inside,outside) static interface service tcp 60000-60999 60000-60999
^
ERROR: % Invalid input detected at '^' marker.
How do I forward a large range of UDP ports from the outside interface to a single server on my inside network? I'd like to use ASDM, but I can switch to the CLI if that works better.
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Jan 8, 2012
How do you forward a domain to a sub-net address? I know how to forward to my network address, but I have not been able to find any documentation on the internet on how to forward to a LAN address.
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Jul 11, 2011
My cisco 837 is connected to a ADSL Router by Ethernet Cable. I have forwarded the telnet port from my ADSL Router to the LAN IP of the Cisco Router so that i can connect to it Remotely but it is not working. I am able to telnet internally but from Internet it is not working. I am not using Cisco Router for ADSL Connectivity.
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Jan 2, 2011
I have just purchased a nas drive. I want to be able to access my files from anywhere. I believe if i setup FTP i can view the files over the web. from what i have been told i need to forward port 21 to the ip address of the nas drive.
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Jun 13, 2012
I just got a Cisco asa 5505 with the next OS and ASDM info ASA 5505 OS 8.4(3) ASDM 6.47 I configured and enter all rules to allow incoming traffic to LAN but it's not working also, I have one host inside that is configured in a second IP and create the rule to allow traffic to it but it doesn't work too.
Problem 1 I have VNC running in port 5900 tcp and I want to connect from Internet using port 6001 and this has to forware the connection to the real VNC port. In the configuration I have a few host with the same configuration but I use different outside port to get it.
Problem 2. I have a second IP with services: SMTP, HTTP, HTTPS and port 444 all TCP forwarding to a server in the LAN.
Facts: SMTP. Every time that I do telnet to the second IP looking for the SMTP port, the firewall doesn't let the incoming connection goes through and the LOGGING screen doesn't how that connection.PORT 6001 (outside)this port is configured to work with the IP in the outside internface and it was to send the incoming connection to a host inside to the real port 5900.Can any one check my configuration if I'm missing anything? for sure I'm but I didn't find it. Bellow is the configuration, I masked the Public IPs just left the last number in the IP, also I left the LAN network to see better the configuration.
CONFIGURATION.
: Saved
:
ASA Version 8.4(3)
!
hostname saturn1
domain-name mydominio.com
enable password SOMEPASS encrypted
[code]....
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Jul 21, 2011
I purchased a Cisco 851 Router for the reliablity, but the process to manage the router to port forward a IP address for a internet camera ... I'm lost. I will try the forums, versus paying a $400 dollar fee for support.
What is the process to have an internal IP address for my outdoor network camera visiable for WWW? How do I port forward 10.10.10.40 How do I assign a static IP to this outdoor network camera?
I can access the Cisco SDM Express V2.5
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Sep 20, 2011
I always seem to have problems when trying to configure port forwarding on cisco routers. I've even tried the instructions I have for a cisco 1811, but no luck. I have a cisco 871 and a computer that has VNC installed on it. I want to be able to access that computer from out side the network using the external ip address and port 5950. People outside the network will be able to open vnc viewer and type in *external ip address*:5950 and it will be directed to the computer with a static internal ip address of 10.12.0.10. What commands do I use to do this?
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