Cisco VPN :: 1841 Connected But No Access To External LAN

Mar 12, 2012

my configuration of Cisco 1841.
I was able to configure the cisco to accept VPN connections from clients. But when i am connected i can not access the VPN LAN. My cisco VPN client shows all the time Packet Decrypted: 0 when connected. I tried the split tunneling configuration based on the example on for split tunneling.
I include config for better understanding. The outside interface is fa0/1 with ip w LAN Inside interface fa0/0 with ip w LAN is
IP for VPN clients - 105

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Recently my laptop, which is successfully connected to the wireless network, has failed to recognize shared folders on my desktop and the external hard drive connected to it. Laptop running 7, desktop running XP Pro. 2 days ago it was working fine. Yesterday it stopped working. I have made no changes that I can think of. All of the folders on the desktop and external drive that I want shared are set up for sharing. So, my question is, what do I need to do to again be able to read and write to these folders, especially the ones on the external hard drive. I believe the adjustment has to be made on the desktop, either in the network connections or the file sharing, but the laptop may need adjusted as well.

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Dec 28, 2011

Our bank is required to do disaster recovery testing. We are doing this offsite at one of our director's businesses. His setup is as follows: His ISP is Time Warner which provided him with a wall unit and a switch He has a Cisco 1841 router out from the Time Warner switch and then down to his internal network, so TW wall unit --> TW switch --> Cisco 1841 --> internal network.The IPs provided to them from TW are We are trying to use the external address of, which his business is not currently using internally The Cisco 1841 router holds and NATs all of these addresses currently. We have a Cisco 800 series that is a dedicated router that needs an unused external static IP setup separate from their network. We were trying to plug into their Cisco 1841 and give the 800 series an internal address of This will not work for our bank's core processing data center. It has to be out of the TW switch and have an address of the
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I'm not exactly sure if this is a networking problem or a Windows problem. I have a Linksys ea3500 router to which I have connected a WD My Book external drive via the USB port. When I view the router's webpage, I can see my drive listed under the storage tab; however, I cannot map the drive on my laptop. Whenever I try to do so, it gives me the 0x80070035 error. If I run the Windows diagnostic, it tells me the drive will not accept the connection.

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We are using Cisco Router 1841 and users reporting issue related to VoIP. After investigation, seeing input errors on Router LAN interface, but there is no error on connected switch interface. [code]

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Jan 24, 2011

I recently setup a Camera (DVR) system for a good friend of mine who just opened a restaurant. We are able to access the cameras just fine internally (LAN), but not externally (WAN).

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Cisco VPN :: 6500 - Cannot Access External HTTPS Webpages

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So, i have set up a working Anyconnect solution, (see attached picture)
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Core is cat 6500 
Anyconnect client version: 3.1.00495
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I can reach inside servers (for example i can reach DMZ server (for example i can surf the internet on regular HTTP (port 80)
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both https and ftp works from the INSIDE network.
I have tried to change the port for Anyconnect, to 444 (for dtls as well) and i can see that all the vpn traffic is going over 444, so 443 should be undisturbed.
but this is not working.. could it be a certificate problem, or am i missing something? NAT/PAT? 
This is my NAT configuration:
nat (DMZ,INSIDE) source static NET-DMZ NET-DMZ destination static NET-ALL-INSIDE


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Basically we have different customers using the same 5510 firewall. We have created one sub interface for every customer on the inside interface. There are differed NAT rules for every customer all using the same block of public IP addresses on the outside interface. They do not have access to each other’s network so I cannot make any exemption rules between two sub interfaces. The problem is for all our customers that they cannot communicate with each other over Internet, Email, Applications etc. using the external IP address. A work around is to use a proxy server, but they do not agree with that. I cannot make exemption rules between sub interfaces for security reasons.

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Cisco VPN :: 1841 Cannot Access PCs If Internet Is Enabled

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I have a branch office connected to the Head Office through a VPN Tunnel in cisco 1841 Router. If i enable Internet for any pc in Branch Office through cisco router i cannot access it remotely from Head Office. [code]

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I have a 1841 router with two wan access from two different ISP:throught dialer with fixed ip obtained from dhcp - ATM interface,thought fastethernet 0/1 with fixed ip and a specific gateway - can be use for Internet traffic if dialer is down.I can't manage to make them accessible at the same time (ping and ssh).In a second time I would like to have a VPN client access on one wan and site to site VPN on the other, instead of having the two on one wan.

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Cisco WAN :: 1841 - No Internet Access Via LAN Clients

Apr 27, 2012

I have a Cisco 1841 router that is connected to a switch. I have WAN/LAN configured on the router and the switch is handing out internal IP's. The issus that none of the client machines can access the Internet. From within the router console, I am able to ping external domain names, my ISP DNS servers.
Once the client machines picks up an IP they are unable to ping any external domain names or IP's and not even the ISP DNS servers, but they can ping the Cisco router IP. As a note I have tried my ISP DNS servers and as a test Google's DNS servers, but neither will allow access to the Internet.
Below is the current running config:
Building configuration...
Current configuration : 1440 bytes
version 12.4
service timestamps debug datetime msec


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Nov 26, 2012

I'm working on setting up a couple of new WAN sites with 256K frame relay circuits back to our main building.  Each new site has a new PVC, and both are pointing back to a PVC on a T1 at the main building.  The main site has a 2801 with a single CSU/DSU WIC, and each new site has a 1841 with a 3560 connected to fa0/1.  At both sites, I'm able to get the circuit up, and the serial interfaces at both new sites show up/up, and the subinterfaces at the main site also show up/up for both sites.  Routing is being done by EIGRP, and both sites are able to establish the 2801 as an EIGRP neighbor, and I'm able to ping/tracert anywhere on our network by name or IP, so routing and DNS appear to be working.  I can also ping both new routers from the main site.  However, that's about all I can do.  I'm not able to access any resources on our network (email/shares/internet/intranet/etc) from the two new sites.  I can ping the new routers/switches from the main site, but can't ssh to them.  I can ssh to them locally.  There are no firewalls in the equation, and I don't think there are any ACL's in the picture either. 
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I did some testing for communication over certain port numbers using telnet and nmap, and found the following:
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May 27, 2011

I have setup a remote access on our 1841 device, with split tunnel.
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Here is my config: 
cisco1841#sh run Building configuration...
Current configuration : 7682 bytes!version 12.4service timestamps debug datetime msecservice timestamps log datetime msecservice password-encryption!hostname cisco1841!boot-start-markerboot-end-marker!logging buffered 51200


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Sep 11, 2011

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Jul 17, 2012

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