Cisco WAN :: 1941 When Check NAT Translation On Router / It Does Translate Packets
May 15, 2012
Few are the issues that I am facing on IOS Version 15 and Cisco 1941 Router , this router is currently in production on clients.
•1. I do PAT on router interface , and it has public IP on it , when I send request to Internet via Browser from LAN client , Page does not open and when I check NAT TRANSLATION on router , Router does translate the packets. The work around I found is that when I disabled CEF on router , Web starts browsing , Why does this happen and why I need to disable CEF ?
•2.I have Public IP Pool its subnet mask is /29 , one of the Public IP from this pool is live on the interface. When I perform STATIC NAT a web server resides in LAN , then I can access this server from anywhere in the world by IP. After few days Static NAT stopped working , I again Static NAT it on other Public IP , the same issue rise again , I am not able to access this server from Internet. This issue has been faced at two clients. The same pool i have checked on 1841 router and static nat works fine on the same public IP .
I have 5 workstations with 2 servers but the backup server (black) is shut down intentionally.I have 1 cisco gigabit unmanaged 8 port switch and 1 cisco 1941 vpn router.The cisco 1941 vpn router is configured for IPVPN connection to other branches.
Challenge:
1. Configure NAT to enable the 5 workstations to be connected to the internet thru the router to the ISP. 2. Configure NAT to enable the server to be accessed from outside using the public IP address provided by the ISP. [code]
Verification:
1. I can ping other pc on 10.71.5.0/24 network. 2. When I typed in the ISP's public ip address on the browser, i got into the modem user interface for configuration.
I still can't connect to the internet. When i do tracert, it stops on the 192.168.15.1 hop and didnt continue. This shouldn't be the case since i want to connect using the GE0/1 outside port for the internet.
I have a virtual machine running in my desktop which connected on the gigabit lan port on EA4500 with firmware 2.0.37.What I want to be able to do forward a port that came from an external ipv4 address to the ipv6 address and a different port to my virtual machine (to remote desktop port 3389).The reason I want to convert the traffic to ipv6 is because virtual machine is running vpn and is not reacheable through ipv4 (unless bunch of routes are setup and things get complicated etc). I verified my phsical server and virtual server get both ipv6 ip addresses through ipv6 tunnel from comcast. Without tunneling I could not get ipv6 setup using automatic mode with comcast, it simply did not work for some reason.
currently I face problem with outside nat translation and Im not sure how to solve it. I gotta 881 router
int vlan1 ip address 10.10.10.1 255.255.255.0 ip nat inside [code]...
and remote server 100.100.100.25 routed to interface fa0/0. So the problem is that hosts from V lan 1 and V lan 2 want to communicate to this server, but they cannot route, which means, that I have to "give" them some IP from their range as fake address of this server and translate it. So I did
ip nat outside source static 100.100.100.25 10.10.10.7 (for Vlan 1) ip nat outside source static 100.100.100.25 20.20.20.7 (for Vlan 2)
As far as I understand router doesn't allow this translation, because if the communication would be started from outside (initial packet would come from server side), router wouldn't know how to translate its source address.
I currently have a pair of Adtran Netvanta 1224R units that I want to replacce with Cisco 1760 routers. How can I translate the existing QoS (relevant sections below) on the Adtrans to work.
I have a firewall which is conntect to a Cisco 870 router.
The router only allows one ip address to ssh into and it which is 7.7.7.7 but the interface which is connected to the router is on the firewall is a 2.2.2.2 and the router interface is a 2.2.2.1.
I can ping the router from the inside of my firewall, but I can't ssh into it at is has a access list which will only allow ssh from the ip address 7.7.7.7.
Would it be possible to do a static NAT which can translate the 2.2.2.2 to a 7.7.7.7 when I ssh into the router when coming from the inside?
I have problems in exporting translations of NAT from my router through NetFlow v9 ASR1006, to my server nfdump, any opensource or licensed software (collector) that I recommend.
ip nat log translations flow-export v9 udp destination 10.1.1.15 1181
I have a internal subnet 192.168.3.0/24 sitting behind an ASA firewal 8.2 and would behind accessing to web server 192.168.11.54 which sits behind the outside interface of the ASA firewall.The access would be like this:
1) 192.168.3.0/24 will be accesing to the web server http://192.168.11.54 2) We would like to translate the source 192.168.3.0/24 to the firewall outside IP address 3) We would like to translate the destination web server 192.168.11.54 to 202.90.197.146 as well
How to perform this simultaneous source and destnation address translation in ASA firewall 8.2? Could this be done in ASA firewall 8.2?
I guess I'll start with the easy stuff, Cisco ASA 5520 ver 8.2, ASDM ver 6.2, IPSec L2L tunnel with overlapping private IPs.
I have about a dozen L2L connections on our 5520 but never had to do one with overlapping IPs. I have two that I have to build and one definitely overlaps our inside locals, and the other is requesting that we NAT our inside locals to a 10.x.x.x.
I've searched the board and found several good posts including document 112049, but I just don't seem to be able to get my head around how to translate one inside address to another. It would seem like is would be as easy as doing an (inside,inside) static NAT, but most everything has the solution as a policy NAT or doing an (inside, outside) but in the less secure address space place the name of an ACL. I have ordered that brick of a book on ASAs from Cisco Press, but need to get something going and I'm not having much luck getting this thing up and running.
Perhaps my basic understanding of NAT rules is wrong. I thought that when using NAT the command speaks to the interfaces and the direction of travel, (inside,outside). I also thought that the IP adresses used must be valid on the interface refferenced, so any refference to "inside" would have to be an address on the "inside interface of the FW and likewise for the "outside" interface. Finally, to be sure I'm not calling a duck a goose my understanding is that the following are correct; "inside local" = my private, "inside global= my peer, "outside local"= their private, "outside global"= their peer.
So if I'm translating say a 192.x.x.x on my inside local and wanted to present them a 10.x.x.x, wouldn't I need an (inside,outside)? And even though I'm translating my private IP into a different private IP, the translated IP must be on the "outside" interface because that is the interface that I want to present the new private IP on?
So for the scenario I suggested at the top where I need to translate my private 192.x.x.x into a 10.x.x.x and present that 10.x.x.x to the other side, I need something like NAT Static (inside,outside) 10.x.x.x 192.x.x.x?
chrome has an application that auto translates any text that is selected, directly in the browser.is there something similar for IE7? I dont wanna install some toolbar or any visible program, just a program similar to the chrome application, that translates selected text and displays it in a pop up.
We have an ethernet port on Cisco router 1800 connected to the ADSL modem. The router does ip nat translation, but users complained it is slow when they access to internet. [code]
I currently have a pair of Adtran Netvanta 1224R units that I want to replacce with Cisco 1760 routers. How can I translate the existing QoS (relevant sections below) on the Adtrans to work on the Cisco routers.
I just purchased an ASA 5555 and started to configure. I was successful in natting all the IPs that are on the same subnet as the ASA eth0. I could not get the nat working for the 2nd address block.
I'm trying to translate my inside network of 192.168.20.0 to my outside ISP address on ASA 5505. The ping from all hosts to 4.2.2.2 works, but it still only let's one address out to translate.My configuration is:
global (outside) 1 interface nat (inside) 1 0.0.0.0 0.0.0.0
I'm trying to translate my inside network of 192.168.20.0 to my outside ISP address on ASA 5505. The ping from all hosts to 4.2.2.2 works, but it still only let's one address out to translate.My configuration is:
global (outside) 1 interface nat (inside) 1 0.0.0.0 0.0.0.0
I know the CSS is too old but I have one in production environment and I was asked if it is possible to CSS to make NAT from inside addresses and translate them into one external IP address to diferent kind of communications, for example: 172.16.4.9 and 172.16.4.10 (inside addresses) should start connection to external IP addresses destinations 50.50.50.50 / 60.60.60.60 70.70.70.70 / 80.80.80.80 and so on, the default gateway to those Servers is the CSS and I would like to know if it is possible that all connection to external world to be translate into one IP address 172.16.4.100.
I get frequent internet disconnects. Sometimes when I notice I can't get into the web gui; other time I can get in but I have to re-authenticate, and I see the wan port is re-initializing. So of course, the "WAN uptime" starts again at zero. I can then look at the "statistics" page and see that the LAN packets are really low (like low 4 digits). SO, my guess is the router is randomly resetting. But how can I check the router uptime?? I searched and I see plenty of folks reporting their uptimes, but I can't find it anywhere in the GUI. I want to be able to prove that it's the router and not the cable modem or WAN connection....I was getting the logs emailed, but really can't decipher anything. I have "system activity", "attacks", and "notices" enabled. It's DIR-655, hardware B1, firmware 2.10NA.I already emailed DLINK support asking for a warranty replacement, as this one is only 10 months old. If they don't come through, it's time to jump ship to a new vendor. Will be my second dead one in under a year.
I would like to automatically check if the VPN is up or down, simple enough, and respond by bumping it, disconnecting and connecting, as needs be (not so simple I think).This through a C# program using HttpWebRequest and HttpWebResponse.It's simple enough to login to the VPN page using known credentials. Done deal. And also very easy to check a couple of known patterns in the VPN table.When I determine I need to bump the VPN, how do we simulate the form submission and/or call to the JavaScript programmatically? we're using a Linksys WRVS4400N router, firmware version V1.1.13.
I need to open four ports and have no idea how. My web host thought that my ISP was blocking them; the ISP says they are not and that it is teh router. I don't have pjone support anymore (WRT54G is old) so could not be walked through it by a tech support person.
I can see who is connected via the physical ethernet ports on the E4200 router. However, is there a way to check who is connected to the wireless network. Also is there a way to see rx/tx bytes statistics for all wired and wireless users (including ones that are no longer connected)? I've had the router for 3 months now and it works great but I find there isn't enough operational user info/stats on this router.
We bought a CISCO1941 K9 router. To enabled IPSec feature, I need the PAK to active IPSec on 1941. Where I can buy a valid PAK? Could it be done via on-line support?
We purchased this router with the cisco IOS software installed. I've installed the Vista driver on my win 7 box. I believe that should work. I installed Putty to termainl in and I'm using a USB connection. I cannot even log into the router. I thought I was going to see some kind of setup wizard using the CISCO software so I would use a GUI and get things moving. I've got loads of reference material with command etc. but I just can't connect to the router to make it happen.
