Cisco Firewall :: 5505 Port Forward External Clients To 1 Address
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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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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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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Nov 4, 2011
I've configured a 5505 but internal clients can't ping external ip. To test I've connect a pc with the ip of the default router on the Outside int the ASA can ping the PC and the PC can ping the ASA, but internal clients can't ping the PC
PC config 195.12.23.241/28
Here's the ASA config, so far I've wiped the ASA and started with a blank sonfig and built it up but still not working.
ASA Version 8.2(5)
!
!
interface Ethernet0/0
switchport access vlan 2
!
interface Ethernet0/1
!
interface Ethernet0/2
!
interface Ethernet0/3
!
interface Ethernet0/4
[Code] .....
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Dec 30, 2012
I am a total Cisco novice who has just had a ASA5505 installed to replace a linux freeware firewall (smoothwall).I'm told that the 5505 can't port forward traffic (e.g. ssh) from two external IP addresses to two internal destination machines via the same port # (22 in this example).
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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 13, 2013
We have an ASA 5505 and are changing ISPs so we'll be getting a new static IP address. How do I change the external IP address using ASDM? (I haven't done it in 5 years so I'm rusty and just want ot make sure.) The ASA and ASDM are up to date.Am i correct in that I only need to change the external address in the configuration under Interfaces, then under Routing - Static Routes - Gateway IP I just need to enter the new WAN gateway 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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Nov 10, 2011
I have a cable modem internet connection and my cable modem is connected to an ASA 5505. The inside interface of the ASA has an IP address of 192.168.2.2 and is connected to a Linksys router's internet port which has an IP address of 192.168.2.1. The Linksys router then has a local area network of 192.168.1.0 and all my clients are on that network. Everything is working fine except in my ASA logs all the traffic shows up as the router's external address which is 192.168.2.1. I would like to see the 192.168.1.x address of the clients in the ASA firewall. I've tried making some changes to the Linksys router but that hasn't resolved it. Is there any changes I can make on the ASA to get this to work?
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Sep 10, 2012
I'm configuring a 5505 for a remote office. Until they are assigned a static ip by the provider I will have to use the providers dhcp address. How do I construct an access list for the outside interface using the external address if I don't know it yet? is there a commnd that will insert the ip address in to the access list once one is assigned?
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Jul 25, 2011
I have purchased a subnet of 8 private IP addresses from my ISP. 109.x.x.128/29.The ISP has placed a juniper router within our data centre which is routing purely from 109.x.x.206/30 to 109.x.x.128/29 with the ip of fa0/1 set to .129.
I have linked a cisco 5505 to fa0/1 of the juniper from fa0/0 and configured its IP to .130. I have configured NAT to translate our client pool 192.168.16.x /24 address' to the internet.
Is it possible for the 5505 to route / map my remaing private IP addresses through its external port? I have tried creating a seperate VLAN for a DMZ for our servers to sit within but am returned with a subnetting error as VLAN for my external port is all ready configured within the same subnet.
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Jun 9, 2010
I'm looking to setup AnyConnect VPN with no split tunneling. ASA 5505 v8.2. It seems this should be really easy. I must be missing something.
I can get the AnyConnect users to connect fine and they can access sites internal and at other IPSec-tunneled sites. But no access to the internet.
Internal is 10.1.1.x, VPN pool is 10.1.1.251-253 (Temp list for testing). I issued the following tracer: packet-tracer input outside tcp 10.1.1.253 12345 69.147.125.65 80 detailed
The last reported point (where it fails) is:
Phase: 7
Type: WEBVPN-SVC
Subtype: in
[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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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 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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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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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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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 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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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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Oct 28, 2012
Our company uses a commercial copier monitoring package called FMAudit to obtain meter readings from our clients' copiers, and it uses a feed to send the readings back to us. We have used port 90 for this purpose.Due to a recent server crash and emergency reconfiguration of our network, we have moved our FMAudit central server from in-house to a hosted service, with of course a different external IP address.
Without interfering with our other systems, is there a way to redirect JUST PORT 90 to another IP address external to our own? I don't care if it has to happen at the router or server level. We are using Server 2003 and a Cisco 887VAW.
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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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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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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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Nov 20, 2012
My internet works. However port forwarding does not work. I want to port forward from the outside to inside obviously. I get an error in my log file which Ill show you and then I will share the running-config I have tried using this method found elsewhere.
========================================================================================================
ATTEMPTED CONFIG
object network inside-host
host 192.168.100.4
nat (inside,outside) static interface service tcp 3389 3389
access-list Outside-2-Inside line 1 extended permit tcp any host 192.168.100.4 eq 3389 log informational interval 300
access-group Outside-2-Inside in interface outside
[code]....
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Jan 19, 2013
I'm trying to do a normal port forward on a ASA 5505 with 9.1(1) and it is not working as it should.There are two ports that I want to forward, TCP 32000 and TCP 32001, from the outside interface.I tried a Auto NAT that gave rpf-check drop. [code]
I have tried diffrent configurations on this for several hours now and I cant get it to work.Could this be asymetric NAT with the dynamic rule? How can I troubleshoot this in a smart way?
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Oct 11, 2011
i´m trying to make a traditional port forward (http to http) on our new asa5510. Previous releases off 5505 and software prior 8.3 was no problem. Could someone tell me how do it in new 8.4 version? I ám a rookie on the new ASA series!
If nothing makes sense in this configuration please give example on how to do it correct. The object on the inside is SRV02 wich is running a webserver on port 80. So i want to open upp for http on outside interface and forward that traffic to srv02 (inside webserver)
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Jan 1, 2012
I consider the NAT mechanism to be quite straight forward, but although the firewall ACLs allow the traffic, it is being denied. The ASDM log and packet-tracer indicate the problem being an ACL.
# the internal resource
object network mabe-mbp
host 10.0.0.36
!
# these are ALL of the rules on the outside/inside interfaces
access-list outside_access_in extended permit tcp host 1.2.3.90 any eq 12380 log disabled
access-list outside_access_out extended permit ip any any log
access-list inside_access_in extended permit ip any any log
access-list inside_access_out extended permit ip any any log (code)
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Apr 24, 2012
We were having a discussion of ios firewall vs. asa for smaller clients(less than 50). On using ios firewall(zbf or cbac)and an asa 5505/5510. One of the arguments brought up on using ios firewall on the router is that a router will do an ip sla failover. I have configured a number of isr's for this and i know it works good.
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Sep 8, 2010
Successfully creating a port-forward in ASA5510, ASA version 8.3(1) ASDM6.3(1)?I have spend hours now trying, but I'm still unsuccessful.What I want is a simple: "if this particular ip-adress hits the wan interface on this tcp-port redirect to this inside ip-address on this tcp-port.I have never had any trouble on any other firewall creating something like this, but the ASA is killing me.
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Sep 26, 2012
I have a cisco asa 5520. i need to forward telnet to a router on the inside interface. Here is what i have done so far but it doesnt seem to be working.
I have created an access-list that looks like this:
access-list 102 extended permit tcp any host 10.10.60.2 eq telnet
But when do this it still doesnt forward my request to the router at 10.10.60.2 . So just to explain what im trying to do. I use Putty, i am putting the outside interface IP into putty, selecting telnet and opening the session. i need the outside interface to see this request and know to forward port 23 to the router on the inside interface with IP 10.10.60.2. The ASA is running version: asa842-k8.bin
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