Home Network :: Static Port Address Translation?
Mar 24, 2011
In my router I can set rule that all traffic incoming to router's extAddr:8888, is forwarded to my intAddr:8888. But I also need reverse rule that packets originating from intAddr:8888 are translated to extAddr:8888. Can I do that? What technique can I search on google to find more information, because it is not port forwarding. I would calll it reverse port forwarding or static port address translation, but I do not find anything useful in internet searching these keywords.
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Aug 22, 2011
I have an 8.3(2) ASA with a single outside IP. Dynamic PAT translates inside addresses to the outside interface address. I would like to use static NAT with port translation to access an inside syslog server. I got an error when I tried using the outside interface address. Can I use both dynamic PAT and Port Translation with the same outside address?This is what I would like to use but I receive an error saying there is an overlap using the outside interface address.(192.168.1.0 is my inside network. 10.10.1.10 is the outside interface IP.)
object network inside-net
subnet 192.168.1.0 255.255.255.0
nat (inside, outside) dynamic interface
object network SYSLOG_SERVER
host 192.168.1.50
nat (inside,outside) static 10.10.1.10 service tcp ssh ssh
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Aug 4, 2012
I have site to site vpn between cisco asa and cisco 2911 router.asa is static ip and cisco 2911 side is dynamic ip. my site to site vpn is working fine. I am just trying to make PAT over the vpn means i want forward one ip in my public pool to one of my local ip in the cisco 2911 side.
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May 30, 2011
I'm trying to migrate from olda PIX to newest ASA 8.4.1. Everything seems to be good except the static NAT. [code]
The inside interface uses implicit rule. ( permit any less secure network )
Although te above config the ASA logs the following.
TCP access denied by ACL from 94.94.94.94/2003 to outside:86.101.228.221/80
The 86.101.228.221 our public Internet IP whic are used as outside IP also.
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Oct 31, 2011
I am trying to correctly configure our ASA 5520 and our Mitel Border Gateway in our DMZ. In the documentation for the Mitel border gateway it wants me to set up 2 external IP's on my ASA one to allow 443 traffice into the MBG, and another for 443 traffic that needs to be forwarded to port 4443 for the MGB in the DMZ. My problem is I don't know how to do this. the MBG only has one IP, and I need to have 2 different URL's mapped to two different external IP's both externally using port 443, and one of them forwarding to 4443 on the DMZ interface.
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Apr 18, 2011
How Stuff Works "How Network Address Translation Works"."This is where NAT (RFC 1631) comes to the rescue. Network Address Translation allows a single device, such as a router, to act as an agent between the Internet (or "public network") and a local (or "private") network. This means that only a single, unique IP address is required to represent an entire group of computers." so let's say 6-7 pc's can have access to the internet using the same IP. doesn't this causes any problems? what if one of those pc's was used fore doing something illegal? how can they spot it later on? or what if 2 or more pc's access (from that subnetwork) access the same website with the same IP?
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Nov 22, 2012
We've got an application that is running on our LAN that is using IP addressing to connect to the server (they refused to use DNS).The server is now being moved to a VM which will be on a different subnet. The supplier is now concerned that there will be a big down time due to him having to reconfigure each device (about 100) with the new server IP. If the server was external I know I'd be able to do NAT on the FW to make this work but can it be done internally on my 6500s? I want to have the devices pointing at their hardcoded IP address off 1.1.1.10 and NAT the destination to the VMware servers IP 2.2.2.10? Is this possible using cisco NAT?
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Jan 19, 2013
Is it possible to perform static Nat's through an internal network?I have a ASA 5510 with a public outside interface (let’s call it 68.68.68.1), and I have an inside private IP address (192.168.1.2/24). The inside IP address leads to a 4900m with that interface being configured with a 192.168.1.1 (no switching). On the 4900 M I have several VLANs one of them is an internal DMZ of sorts. (192.168.2.0/24). Within this DMZ network are several Web servers which need to be associated a public IP address (68.68.68.x).
Every time I configure a static Nat to associating a public IP address with an internal IP address within the DMZ, packet Tracer on the ASA informs me that the packet gets dropped at the static Nat and I cannot figure out why this is so.Safe it to say my question still stands is it possible to Nat (68.68.68.222 to and 92.168.2.60) given the configuration above, and how would I go about configuring in such the manner above so that I acn apply static nat through the 192.168.1.0 network to reach the 192.168.2.0 network.
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Dec 6, 2010
I have a nat and vpn setup on my Cisco 2801 router.Everything is working as expected except the NAT. I have a single static nat translation but it only works for inbound and not outbound. Going outbound, it uses the default overload nat address of the outside interface. [code] I want to add another mailserver. But I fear if one mailserver were to get black-listed, they would both be reporting there ip address as the same address (the one on the ethernet interface) which would blacklist both mail servers.Again, inbound nat works ok, but outbound is just using the IP of the ethernet0/0 address.
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Jul 19, 2011
I am trying to change a static nat entry from this:
ip nat inside source list 1 interface Dialer0 overloadip nat inside source static tcp 192.168.0.246 25 interface Dialer0 25ip nat inside source static tcp 192.168.0.246 80 interface Dialer0 80ip nat inside source static tcp 192.168.0.246 443 interface Dialer0 443
to
ip nat inside source list 1 interface Dialer0 overloadip nat inside source static tcp 192.168.0.247 25 interface Dialer0 25ip nat inside source static tcp 192.168.0.247 80 interface Dialer0 80ip nat inside source static tcp 192.168.0.247 443 interface Dialer0 443
I have tried various methods from exec mode clear ip nat translation *
no ip nat inside source static tcp 192.168.0.246 443 interface dialer0 443 But I am getting cisco2800(config)#%Static entry in use, cannot remove.
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Dec 20, 2012
Recently upgraded to an Asa 5512x from a pix 515e. I have an Ipswitch secure MoveIT server on the dmz1 interface that needs to be accessed from both the inside and outside interfaces. I have setup a static nat from the outside to the dmz1 and it works, I can also connect from the inside interface. Now I need the MoveIT server to access the DNS server and email server on the inside interface so it can send notifications. On the pix I just created a static from the inside to the dmz1 using its own IP address - static (inside,dmz1) 192.168.1.7 192.168.1.7 net mask 255.255.255.255. I would then add the access-list to allow. How would I set this up with the Asa 8.6 commands?
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Feb 24, 2013
I have a Time Warner Cable business class service with no static IP, with a wireless modem which is plugged to a CAT5 distribution panel. On the jacks (2 other rooms on the house) I have a Linksys E3000 and a Linksys Valet router for signal boost and gadgets usage (TV, cameras, etc).The main router (TWC) has it's own external IP which TWC assigns to me and internally distributes via DHCP the range 192.168.0.x. With that said:
- The E3000 has a 192.168.0.6 IP -- this is fixed setup on the TWC router (ubee brand) by MAC address
- The Valet has a 192.168.0.7 IP -- this is fixed setup on the TWC router (ubee brand) by MAC address
- The main router has the 192.168.0.1 as the gateway and web-interface
Whenever I connect something to the E3000, it is distributing the 192.168.1.x range and the valet 192.168.2.x range.That works perfectly for my home based business until I decided to use more stuff on the network such as a IP printer, IP cameras, etc.
- The IP cameras are connected to the E3000 due to signal strength and I have manually assigned them the 192.168.1.15 and 192.168.1.16 IPs and ports 9001 and 9002.
- The printer is connected to the E3000 and I have manually assigned the IP 192.168.1.30.
Issue 1: Port forwarding On the main router (TWC - UBEE) I have tried to setup a port forwarding by informing the Local IP as 192.168.0.6 (E3000 IP), Internal Port 0, Public Interface IP (0.0.0.0), Ext Start Port 9001, Ext End Port 9001, Protocol - Both, Enabled Yes. On the E3000 I did the same config (screen shot attached e3000.png).This is not working properly. I can't get into the camera.
Issue 2: Printer/ The printer is only accessible if I connect to the E3000 (because it is on the 192.168.1.x network)
Issue 3: How to configure all the devices on the same subnet? If I want everyone to be on the 192.168.0.x network, how to configure properly the E3000 and the Valet? I have tried to force them into the same network but it would not work properly. It would not get an IP from the UBEE router (main).
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Jun 23, 2011
What I'm trying to go for is to make a Static IP so that I can forward my ports in order to play certain games. I have had my ports forwarded at one time with a different ISP (in the same area), however they used cable and the company I'm with now uses DSL. The company "Hawaiian Telcom" has provided me with a Motorola 2210 modem/router. I have had trouble trying to create a static IP with this router so (sorry if this was a stupid move) I decided to buy a linksys router to try to port forward with that. When my ports were forwarded with the previous ISP I was using a linksys router then. The now aged linksys router was replaced due to it getting wet, but that's besides the point
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May 28, 2012
For numerous reasons, I want to bind my DHCP clients to static IP addresses, but can't figure out how to do it in DD-WRT.
I've googled, but every link I click times out (for this specific search- my uplink is otherwise fine).
I know I can do it with hardcoded IPs, I'm just curious how static DHCP is done (and yes I am aware that Static is a contradiction in terms of DHCP. I want a given MAC to always get the same IP) and would like to have some info on this.
(call this reserved DHCP if you prefer... )
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May 28, 2012
So I have AT&T U-verse and am teaching myself networking and am wanting to mess around in creating my home network and set up static IPs for my devices. I know how to set them up, but I guess AT&T is saying that they have to allocate the static IPs....pretty much they are saying I have to pay them so they can say ok I can use the IP addresses from xxx-xxx-x-10 to and then depnding on how many I want to have depends on how much I pay. This makes no sense to me. Why should I have to pay my ISP for static IP address, from my understanding those are things
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Oct 17, 2012
We have a NETGEAR ProSafe™ 802.11g Wireless VPN Firewall FVG318 set up at work with a static IP so we can do a Voice Over IP from our sales office.Everything works fine until I plug in a computer that is connected to our digital printer, then the PC stays on the internet for a while, then crashes the connection.Once I plug in the PC to the network, the rest of the network has issues.
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Jun 18, 2012
I am in the process of acquiring a static ip address from my isp time Warner. I only want to pay for a single static, but I have a number of machines I want to put on the internet, a web server and a e-mail-server. Using a cisco router, a Cisco Rv 120w. Can I assign the static ip address my isp gave me to the Rv 120w and then crate a vlan to assign addresses to various computers. Or is this something my ISP does. I get the impression from the tech guy at Time Warner that this is something they do.
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Jul 2, 2011
I'm connected through a simple non-configurable switch to a 172.20.0.0. 255.255.0.0 network, with a gateway of 172.20.2.2.
When i use DHCP, i am able to connect to the web.
When i change my ip address to a static address (with an available ip address and correct subnet mask and default gateway) i am unable to connect to the web.
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Nov 7, 2012
I have 5 Static Ip pool all IPs are working fine. I have deploy a IIS Server on Windows2008 and configure the Static IP on that server. earlier it was working fine . but since last month the IP is not pinging from Out Side but internal IP Pool its working. I have checked the SERver firewall and another Setting is Ok. if i changed the Ip from the server the new IP is also not pinging.
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Feb 25, 2012
I have a router manufactured by AirTies,the model is Air 4450.This has the capability of being an Access Point in a current network, which is how I want to use it. (Introducing it into my current Sky Broadband network with a Sagem F@ST 2504N router).However, I cannot access the configuration page whatsoever.The manual states the default IP address of the router is 192.168.2.254, so I have set my laptop to a static IP of 192.168.2.100 and patched into LAN port #1 on the rear of the Airties 4450, powered on the unit and cannot access the router at all.I have held down the reset button several times to no avail.how I can configure this unit ?
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Jan 15, 2013
I've got a server that is connected to the network through one physical ethernet adapter. From my ISP, I got 4 static, public IP adresses, one of which is in use on the Host-Server itself, the remaining three each on a virtualized server. All 4 Servers are running on the same machine.Everything is running smoothly, however, I need to do some Bandwidth Management and Port Mapping, this is why I bought a ZyWall USG20, thinking it would be perfectly capable of doing what I need. is it possible, with a ZyWall USG20, to have all my four IP adresses being forwarded to the one physical machine, and apply some bandwith shaping and port mapping to it?
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Jul 11, 2011
I am connected to a static ip network. This network sets local ips to connected computers but general ip is the same: static ip of network. When i go to "whatismyipaddress", I can see this static ip. I want to change my ip address. I have no chance to use proxy server or router connection. Is there a way to change my ip address? (Because some sites ban ip address, ex:rapidshare etc. and I need to change my ip)
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Oct 18, 2011
I have 5 static public IP addresses assigned by my ISP. I like to use one of these static public IP addresses to access one of my PCs in my office from the outside. So I like to configure something like:65.11.22.44 <-> 192.168.1.100.This translation is good for all protocols and all ports. Where I can configure this on the DIR655?
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Feb 26, 2012
is it possible to connect the wan port of a cable modem to a lan port of the home network? the reason is, i need some wifi access and more ports to my wired network, and the most reasonable solution would be a cable modem router with wifi and 4 ports just plugged into one of my routers.
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Dec 5, 2012
I have a server in a DMZ of my 8.4 ASA with nat:
object network FTP-SERVER
host 192.168.1.102
nat (dmz,outside) static interface tcp ftp ftp
And that's working well. However, I now need to translate the source address of connections from the outside to the FTP server as well. The aim is that the source address of packets when they reach the FTP server is an address on the DMZ subnet (as the default route for the FTP server now needs to be something else, not the ASA) as well as this outside-dmz NAT. I thought overloading the DMZ interface of the ASA? Or another IP in that range?
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Nov 12, 2011
I would like to know if Cisco Collector Engine 6.0 can recive and reading the sent address traslation logging of router ASR1006. Using Netflow v9.
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Jul 31, 2011
I want to create a Counter Strike Server and need to open some ports for that.The Problem: I cannot seem to open the ports for gaming.The Modem Setup: My Firewall is disabled.My guess is that, this is the area with the problem. I guess my modem is not forwarding onwards.The Problem: I tried checking my ports with websites like URL etc.It cannot access my port.
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Dec 4, 2012
I setup a guest wired network on the WLC 5508 with 7.2.110. A postage machine can only be setup for static IP address over guest wired network. Is any one how to get it configure on the WLC 5508?
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Mar 1, 2012
I have some issues with Twin PAT on ASA (8.4.2), there is sth I dont udnerstand FTP server is on the inside and client is in outside.
I did sth like this
object network NATED-11
host 20.20.20.11
object network REAL-2
host 10.200.200.2
object service SRV-FTP
service tcp destination eq ftp
nat (outside,inside) source static any any destination static NATED-11 REAL-2 service SRV-FTP SRV-FTP so teoretically there should be a problem in NAT cause there is a second channel for data etc. BUT according to docs "For applications that require application inspection for secondary channels (for example, FTP and VoIP),the ASA automatically translates the secondary ports."
The problem is that it doesn't work at all and got the syslogs
Debug on ASA shows
ASA5510(config)# nat: untranslation - outside:20.20.20.11/21 to inside:10.200.200.2/21
nat: untranslation - outside:20.20.20.11/21 to inside:10.200.200.2/21
nat: untranslation - outside:20.20.20.11/21 to inside:10.200.200.2/21
nat: translation - outside:20.20.20.252/37924 failed - port is not found in xlate(0-0)
[code]....
To make it work I need to modify the nat rule to sth like this (translate source of client to inside inteface of ASA) nat (outside,inside) 1 source static any interface destination static NATED-11 REAL-2 service SRV-FTP SRV-FTP / why its not working in the first place? aaa I forgot to mention that both modes of FTP were tested (passive and active)
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Mar 10, 2012
Trying to translate telnet for switches to the outside ip address at some random ports.
172.16.200.2:23 -> 10.199.199.2:2300
172.16.200.3:23 -> 10.199.199.2:2301
172.16.200.4:23 -> 10.199.199.2:2302
etc....
ASA 5510 running 8.4(3):
interface Ethernet0/0
nameif outside
security-level 0
ip address 10.199.199.2 255.255.255.248
interface Ethernet0/1.200
vlan 200
nameif inside
security-level 100
ip address 172.16.200.254 255.255.255.0
[code]....
I can not access the switch at 10.199.199.2:2301 . What am I doing wrong? Or should cleaning toilets be something I really should look at! Now if i run this NAT statment:
object network Switch_TN
nat (inside,outside) static 10.199.199.3 service tcp telnet 2301
I am able to access the switch at 10.199.199.3:2301
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Aug 23, 2012
The old syntax that I am much more familiar with has been deprecated. On older IOS it would have been something like static (inside,outside) tcp 209.114.146.122 14033 192.168.30.69 1433 netmask 255.255.255.255 Plus an extended ACL to allow the traffic.I am trying to create a Static PAT to allow a host address to access our Network through an ASA. I have external address 209.114.146.122 that I want to hit the external interface on an obscure port (say 14033) and translate that traffic to an internal host address on port 1433.
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Mar 6, 2013
I have a server on the inside of my network (with a internet Routable IP). It has been requested to me that people from the internet access port 80, and that is translated at the firewall to port 7080. I have set up a temp Access rule to allow access to 7080 from the outside and it is accessable. I am not sure what I am doing wrong, but I am tion from 80 not able to get the translato 7080 to work.
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Oct 9, 2012
Well I went to command prompt and typed command ipconfig /all and saw the ip address my system was configured to. Dunno why, but I manually set that ip address in my IPv4 internet settings and got access in my hostel. Now suddenly the access is gone. What should I say, the ip address that I set my laptop to has been shut down ? It doesnt work any more? How do I get another IP address like that which gives me no restricted browsing? What does the admin do in the laptop that suddenly it gets unrestricted browsing privileges?
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