Cisco VPN :: L2L VPN With Static NAT To Hide Internal IPs On 1841 ISR?

Mar 14, 2011

I have configured a L2L VPN on a Cisco 1841 ISR.  I am statically NATing some of my internal hosts to IP addresses that are included in the encrypted traffic.  Please note that not all of the internal hosts are being NATed.  I am doing this to hid some of the real IP addresses on the inside network.  I have confirmed that the VPN works, as well as the NATing of the VPN traffic.  I have traditionally configured L2L VPNs on Cisco ASA 5500 series appliances, and this is my first attempt with the 1841 ISR.  I just want other to take a look a see if I missed anything, or, could I have done some of the configuration more efficiently.  All comments are welcome.
 VPN-RTR-01#show runBuilding configuration...

Current configuration : 9316 bytes!version 12.4service timestamps debug datetime msecservice timestamps log datetime msecservice password-encryption!hostname VPN-RTR-01!boot-start-markerboot-end-marker!! card type command needed for slot/vwic-slot 0/0logging buffered 51200 warningsno logging consoleenable secret 5 xxxxxxxxxxxxxxxenable password 7 xxxxxxxxxxxxxxx!no aaa new-modelip cef!!!!no ip domain lookupip auth-proxy max-nodata-conns 3ip admission max-nodata-conns 3!!crypto pki trustpoint TP-self-signed-2010810276 enrollment selfsigned subject-name cn=IOS-Self-Signed-Certificate-2010810276 revocation-check none rsakeypair TP-self-signed-


View 1 Replies


Cisco :: 1841 Move All Traffic From Internet IP To One Of Internal

Aug 2, 2012

I am in trouble with my cisco 1841 configuration.The "what I want to" schema: very external IP ( AAA.AAA.AAA.AAA ) in the internet cloud => | cisco 1841 external IP BBB.BBB.BBB.BBB | => internal computer IP CCC.CCC.CCC.CCC

View 1 Replies View Related

Cisco WAN :: 1841 / Move All Traffic From Internet IP To One Of Internal Ips?

Aug 1, 2012

I am in trouble with my cisco 1841 configuration. The "what I want to schema":very external IP ( AAA.AAA.AAA.AAA ) in the internet cloud => | cisco 1841 external IP BBB.BBB.BBB.BBB | => internal computer IP  CCC.CCC.CCC.CCC
Steps (this what I think should be done):

1. Find all packets from A by acl

2. Route finded packets throught cisco1841 directly to internal ip address
It should be easy but it doesn't.

View 2 Replies View Related

Cisco VPN ::1841 To Route From Internet Router To Internal LAN Through ASA

Jan 16, 2012

I used the GRE tunnel site to site VPN with 2 cisco 1841 routers. Behind one of the router R1, I used cisco ASA 5510, now my vpn is connect between two routers, but from R2 other site cannot access to LAN behind the firewall. From R1, also cannot route to local network, from local network can access to R1, I think cause of NAT . So how to configure to route internal network from R1 & R2 with VPN.

View 5 Replies View Related

Cisco :: Internal Server Is Not Accessible From Outside Static?

Mar 23, 2013

I have nated my into my internal server , i can ping the out side server but the internal server is not accessible from out side static (Database-Servers,interface-sms) netmask permit interface-smsroute zemen-sms 1access-list Database-Servers-in extended permit tcp host host eq 9090access-list Database-Servers-in extended permit tcp host host eq wwwicmp permit host interface-smsi can ping the out side server with out a problem . from the server i can ping untill and it will not ping the natted server as u seen the accesslist ping is permitted.

View 1 Replies View Related

Cisco VPN :: 1841 VPN Static Route

Feb 21, 2012

VPN 1841, and static nat. I have to create VPN to connect to remote network, but problem is that they already use same subnet as mine. How to configure static nat on cisco 1841 so static nat will work and address will be translated in different IP when connection trough VPN.I have address and I want to translate to,This 1841 is border router, and all VLNAs and VLANs routing is on 3650.

View 12 Replies View Related

Cisco Firewall :: ASA5510 Static Nat From Outside To 2 Internal Interfaces?

Mar 18, 2012

I have an ASA5510 running 8.2 code and I have over 200 static nats from  the outside to the inside interface and that is how I expose our systems  to the Internet.  If this inside interface fails we also have a bypass  interface that also terminates on the internal network but I am not sure  how the nats will behave given they are statically mapped to the  inside.

View 1 Replies View Related

Cisco WAN :: 5510 To Add A Static Nat To Allow Access To Internal Webserver

Mar 20, 2011

ASA 5510I'm trying to add a static NAT for to allow access to an internal webserver on my DMZ.  I've added the config, however i'm still unable to get to it from the outside.  I'm able to ping and browse the server from the LAN and I'm also able to ping the external interafce from the outside, but just unable to browse.I've turned on logging and the error I'm getting is "Inbound TCP connection denied...flags SYN on interface outside"

View 0 Replies View Related

Cisco WAN :: 1841 Floating Static Route

Feb 20, 2012

I have a Cisco 1841 with a DSL and 3G HWIC interface. I would like to setup  the DSL as the primary link and then use the 3G as a backup interface. I am trying to accomplish this using the Floating Static routes with SLA object tracking.
I have tried various options, like having two tracked routes, one tracked route, changing administrative distances, multiple SLA's, etc etc.
My problem basically is that when the DSL (Dialer0) goes down and the 3G (Cellular0/1/0) takes over, that the SLA never changes back when the DSL is available again, so that the DSL can take over as the primary link again. [code]

View 3 Replies View Related

Cisco Switching/Routing :: 1841 - Static NAT

Sep 2, 2012

I have a Cisco 1841 router at home with version 12.4(13r)T advanced ip services. The setup is extremely simple:
1) PPPOE dialer to my service provider over ADSL
2) Nat overload on the dialer interface.
3) 2 V LAN s one for home network (wired) and one for wireless both v LAN's are connected through interface v LAN s respectively.
My problem is when I configure static NAT to map RDP or any other protocol to inside hosts this does n`t work.
ip nat source static tcp 2222 interface Dialer1 2222
ip nat source static tcp 3389 xx.xx.xx.xx 3389 extendable
ip nat inside source list 20 interface Dialer1 overload

When I open wire shark and sniff the traffic on home computer which is the one I`m trying to reach I can't see any traffic. And While performing Nat debugging I am also not able to see traffic going to that port (for example 3389).

View 7 Replies View Related

Cisco VPN :: Anyconnect Clients Not Following Internal Static Routes On ASA5505

Feb 9, 2012

I have just purchased an ASA 5505 for my remote users to access our internal network.  I have followed all the setup instructions I can find.  I am able to establish a VPN connection using the Anyconnect client and can see some of my internal network. (Basically, only the subnet of the internal interface)  However, I have several subnets inside my LAN which are routed by another switch inside my LAN.  I have built in the correct static routes so that the ASA will send traffic to that intenal routing switch for any subnets not part of it's inside interface subnet.  I can see and ping those subnets from the ASA itself but the AnyConnect clients cannot.

View 9 Replies View Related

Cisco VPN :: 2811 - Static NAT Causes Unable To Access Server Via Internal IP

Nov 22, 2011

I running site-to-site IPsec VPN in Cisco 2811 IOS 12.4 both site. Here I encounter a problem to access server on  Site A from Site B
Site A having Leased Line connected to router with Public IP. I have done static mapping 1 web server to Public IP (NAT). This to allow external users to access the server via Public IP. At the same time, users at Site B would need to access to same server via Internal IP since they have Site-to-Site VPN established. But once I done Static Mapping (NAT), user at Site B unable to access the server at Site A using its internal IP. But external user can access server via Public IP. What went wrong here. Do i need to add extra command to get this done?

View 3 Replies View Related

Cisco Firewall :: 2801 / Setting Up Static NAT To Internal Server?

Dec 15, 2012

One of my internal servers requires it to be available to the internet I am having a hard time allowing it to be NATed through my Ciscc 2801 router. It seems as though im missing something small. From what I can gather it seems as though its as issue with ACL, but im not sure. I have ran the following command: ip nat inside source static tcp ***WAN IP Address*** 8443 extendable Then I tried to add it to the ACL via this command: access-list 150 permit tcp any host ***WAN IP Address*** eq 8443 
Here is a copy of my config.
IP    172.19.3.x
Ciscso 2801 Router


View 5 Replies View Related

Cisco Switching/Routing :: 1841 Static Nat Mapping

Jan 5, 2013

I guess i am just getting old and forgot how this works, or i have an IOS load with an undocumented feature in it.A customer of ours wishes to have their exchange server appear to the outside world on a seperate IP address as their public pool address the past this has not been an issue, however in the current configuration we are unable to get the source address to appear per the NAT statement it always sources on the overloaded IP.   below is the relevant NAT config,  am i missing something, or have i hit a IOS feature? [code] There is a 45% chance i have forgotten everything i learned on the NOC desk and a 50% chance that it is somethine really stupid and 5% IOS is broken

View 5 Replies View Related

Cisco Switching/Routing :: Configuring 1841 With ISP And Static IPs?

Sep 12, 2012

We upgrade our Internet service in our India office which required a new router.  The local vendor suggested an 1841, so that is what we have.  It has two fastethernet ports on it.
The ISP (Airtel) provided the following IP address information:
Public WAN IP  :
WAN IP      : MASK :     : DNS : DNS :


View 5 Replies View Related

Cisco WAN :: Simple Static NAT Overlapping Dynamic Internal Range On 5505?

May 21, 2011

I wanted to move to the cisco arena, and having a bugger of a time figuring out simple nat/pat rules combined with access lists. I've been reading Richard Deal's Cisco ASA configuration book, googling the heck out of this simple problem and can't see what I'm missing.
I have an ASA 5505 unlimited security plus license running 8.2(3) and a simple network, 192.168.0.x internal, 192.168.3.x dmz (not even touching that yet!) and outside I have a /29 subnet of addresses, 25 is the gateway, and 26-30 are my addresses.
I have simple dynamic nat set up on the .26 address to nat to 192.168.0.x. All I'm trying to do is port forward a simple tcp port I set for my linux server ( on the inside, for arguement's sake, it's 2222 (it's not really). My outside vlan 50 is X.X.X.226 , can I make a static nat (inside,outside) x.x.x.226 netmask ?
I tried using (inside,outside) x.x.x.230 netmask and that didn't work either. Is it not possible to use two external addresses to hit the entire /24 range AND a single server?
My access rule for this nat is permit tcp any eq 2222 (where I'm using 2222 for my ssh port). then I apply that access list to the access group interface "outside".
I thought the outside interface would do a proxy arp (since I do not have the sysopt noproxyarp command) for my 227,228,229, and 230 addresses where .226 is my internal nat for all my internal machines i.e. -> x.x.x.226 . I had this working like a charm before with my fortinet, so I know I have systems listening.

View 3 Replies View Related

Cisco WAN :: 1841 Floating Static Routes Configured If DSL Link Goes Down

Sep 19, 2011

I am having some trouble configuring dual NAT on a Cisco 1841.
The 1841 has three interfaces.
Fa0/0 - LAN
Fa0/1- Different private network
Fa0/1/0 - Connection to DSL modem
NAT overloading is configured on Fa0/1 and we have traffic that must be router there. We would like to have all internet access go through the DSL modem. Currently internet access is obtained through fa0/1 but is not ideal. I have floating static routes configured if the DSL link goes down. (Which is currently unplugged) I do not have physical access to the router at this moment. We would like to keep the config a simple as possible. It seems like route-maps may be one of our only options.

View 1 Replies View Related

Cisco WAN :: 1841 Unequal Load Balance With Static Routes

Oct 3, 2011

I have a 1841 router attached to 2 ISP's. Each ISPs provides different bandwithd. I want to do load balance between them, but I want to do some sort of weighted load blance, so as to assign more traffic to one ISP than the other. A kind of 70/30 (70% of traffic via ISP1, and 30% of traffic via ISP2).Is there a way to acomplish that? I already tried creating bogus /32 routes, but "cef" seems to be more clever and groups the bogus routes as one gw.

View 12 Replies View Related

Cisco Switching/Routing :: Establishing Static NAT On 1841 Router

Mar 16, 2013

establishing a Static NAT on an 1841 router.
I'm at a FOX affiliate TV station, and in order to connect our EAS Device to the internet & Fox Splicer, I need to setup a Statio NAT, so we picked up an 1841 on eBay.
I've done a little configuration in HyperTerminal.
I've done these ip addresses:

FE0/0        this is the subnet our EAS device is on
FE0/1   this is the subnet of the Fox Splicer.
I need to have NAT translate to and I also need to set a route for pointing to

View 12 Replies View Related

Cisco LAN :: 1841 - Configure Dynamic / Static Nat With Route-Maps

Aug 4, 2009

Basically I have an internet router (1841ISR) with 1 internal (LAN) connection and 2 internet connections. What I want to do is route specific traffic for 3 of my internally hosted services (smtp, https, etc) through one internet connection (fa0/0) and then route all other traffic through the unmanaged/dynamic IP ADSL connection (Dialer 0).

View 9 Replies View Related

Cisco Switching/Routing :: ASA 5505 - Dynamic And Static Internal Hosts Setup

Nov 21, 2012

I'm working on setting up a template configuration for the Cisco ASA 5505 device that we'll use to configure more routers for various client needs. One of the requirements requested of me is the following: Internal hosts assigned a DHCP address are blocked from the internet Internal hosts with a static IP are permitted access to internet All internal hosts can communicate regardless of state
Now, I'm fairly new to this and I'm certain my terminology isn't correct so googling the problem has been fruitless. I have followed basic configuration guides and have configured the device to hand out DHCP addresses to hosts plugged in ports 1-7. If I'm plugged in and specify my address manually in the OS I am blocked from any access so I can only assume there is an access policy or some rule preventing me from authenticating against the router despite having set up VLAN1 to be the entire class C subnet. What sort of steps would I need to do to configure this? New access lists. For the record, the dhcp addresses are in the range of VPN users are assigned an address from and there seems to be no issues with that configuraiton. I don't wish to constrain what addresses a user can use should they specify a static IP ( should be just as valid as

View 10 Replies View Related

Cisco Switching/Routing :: 1841 - Static And Dynamic NAT Configured But Not Working

Mar 21, 2013

I have configured Cisco 1841 router PAT buts its not worked, find the below configuration details,
In LAN  interface
Interface gigabit Ethernet 0/0
no shutdown
Similarly I have configured static and dynamic nat but its not works in my customer place.

View 18 Replies View Related

Linksys Wired Router :: Static Route To Access TMG Internal Network Through RV042 Pptp Server?

Mar 20, 2012

Currently i am having a scenario where i have setup RV042 and which is connected to Microsoft Forefront 2010. PPTP works fine only on rv042 subnet but i am not able to access the "internal" network of TMG.RV042 ( ---> TMG [external] ( ---> TMG [internal] ( Is there any way through static route to access the TMG internal network through RV042 pptp server?

View 1 Replies View Related

How To Hide My Details Online

Jul 15, 2012

I am looking for a way to hide all that information that can be retrieved about me, for example browser, OS, resolution, location, etc.. Is there a way to prevent the sites from getting that info?

View 2 Replies View Related

Cisco Firewall :: ASA5510 / How To Hide All IPs Behind An Interface

Dec 17, 2012

We use filter rules on an ASA5510 firewall to direct clients to a web filtering server which generally works very well.  However lately we're finding that despite having more web filtering licenses than users, the web filtering licenses are being consumed up, mainly because of a recent increase in the rollout of ipads, iphones, androids etc. We  could deploy a proxy server in the wireless DMZ to make all the  wireless devices appear to web filter as a single IP, and apply a single  policy, but that brings it's own problems. My question is: Is there a way to hide them all behind the interface IP instead, so that all wireless devices appear to the web filter on the LAN as the wireless dmz interface IP rather than the wireless device IP?

View 1 Replies View Related

Routers / Switches :: Hide Computer IP In LAN?

Oct 27, 2011

is there any way to hide my computer ip in LAN?

View 7 Replies View Related

Cisco Switching/Routing :: 3750 - How To Hide Mac Addresses

Jun 12, 2013

I Lease fiber between two locations, My operator limiting number of MAC addresses to 8 macs. Is there any possibility using some feature available in the Cisco 3750 switches to (hide mac addresses) encapsulate traffic witch flowing via operator network ?
I need to send data between locations with 1Gb/s speed. If 3750 switches can't do that, which models of switches 1 or 2U can do it. May Metro switches ?

View 1 Replies View Related

Cisco :: 5505 - How To Hide SSID And General Security

Oct 11, 2012

how to hide Wireless SSID via Wireless controllers (one I am using is 5505)
Currently anyone can attmept to login to it as i cant find any options to hide it! Screen shot below)
what measures I should take to secure the APS and from access, currently considering port security and static mac addresses on ports; traffic is already got ACLS on its vlan. I have little to no experience on Wireless devices.

View 10 Replies View Related

Hide Sent / Receive Packets From The TP-Link Router

May 19, 2012

I just want to know how or is it possible to hide sent/receive packets from the Router I cracked few days ago?I'm using wifi card airlive wl-1600 usb and the router is TP-Link.I mean how much is possible to hide my connectivity and everything from me with this router?

View 1 Replies View Related

How To Hide Computer Details Via Remote Desktop

May 12, 2011

I know that when you surf the web, websites can log your IP & MAC address.If you get my jist, I don't want my laptop to be flagged on a few web sites I have been on.My plan is to use another pc, that has a wireless braodband dongle from a mobile phone company.The pc will be attched to the wireless router via Ethernet, but banned from access the web via the router. This way I can connect remotley from my laptop.

View 8 Replies View Related

Change / Hide IP Address For MSDOS Program

Oct 24, 2011

I have a program that connects to a game I play and does some actions on my game accounts (selling items etc).

I have set up several accounts to generate "income" in game and want to alter/hide the IP address shown connecting to those accounts so that my own IP is only associated with my main account. However it's an MSDOS program and I dont want to alter the IP shown/used for other programs on my pc.

Is there a way to alter the IP shown for specific programs only? And will it handle MSDOS programes?

View 4 Replies View Related

Cisco Application :: CSS11503 How To Hide Cookie ARPT Info

Jun 28, 2012

I have two CSS 11503 in my network, recently we had configured sticky with advanced-balance arrowpoint-cookie.
The sticky is functioning but we found our server's private IP in the IE cookie ARPT box.
Is there any way to hide ARPT info? Below is an example configuration of my CSS and attached screenshot is Firefox cookie info.

content 5301
 add service
add service


View 1 Replies View Related

Cisco Infrastructure :: How To Hide Ospf N/w In AS100 From Routers In AS200

Mar 11, 2013

how we can hide our ospf n/w in AS 100 from routers in AS 200 and and there is still communication between R1 and R7

View 2 Replies View Related

Copyrights 2005-15, All rights reserved