Cisco VPN :: 1921 - No Local Network / Internet While On IPSec VPN
Dec 28, 2011
I am testing a EasyVPN IPsec server set up on a cisco 891. Here is how I have it set up right now- the 891 is connected to our backup internet connection (different ISP from our main line) and we have a cisco 1921 as our production router.
I am experiencing a problem where when I am on our internal network off the 1921 and I connect to the VPN on the 891 I lose all local network connectivity. Nothing works, can't ping, can't telnet to the 1921, can't browse the internet, its not just DNS either.
I believe the issue lies in the configuration of the IPSec server on the 891 because when I connect to our client's cisco IPSec VPN I experience full local connectivity with no issues whatsoever. It seems to me that ALL traffic is being routed through the tunnel.
Other than the local issues the VPN is working fine and I can remote desktop to the PC I have set up off the 891 and telnet to the 891 from there.
Current configuration : 8967 bytes
!
! Last configuration change at 20:45:17 UTC Thu Dec 29 2011 by admin
! NVRAM config last updated at 19:52:26 UTC Thu Dec 29 2011 by admin
!
version 15.0
service timestamps debug datetime msec
[code]....
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Feb 6, 2013
I've been trying to set up my new Cisco 1921 Router to provide internet access to my local network but with no success. I've been reading guides and looking at videos and I have to be missing something becaouse I can't access internet (ping/tracert) from my local network.
The DHCP server works fine and the clients on my local network gets ip-adresses from the router but can't ping or tracert outside the local network.
[code]....
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Feb 7, 2013
I wounder if there is any way to ping the local deviceses connected to a network hosted by a Cisco 1921 router? I wan't to be able to ping the device(computer name) but currently cant do that.
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Nov 8, 2011
I need to know how many IPsec VPN tunnels one Cisco1921 can support reliably. Haven't had any luck sifting through documentation on the web.
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Apr 7, 2013
I'm having problem establish l2tp/ipsec vpn connection from Windows vista/7 vpn client to cisco 1921 ( ios 15.2 )
C1 --------> (internet cloud) ---------> (cisco 1921)----->LAN
Error that I'm retrieving is always the same: Error 789: "The L2TP connection attempt failed because the security layer encountered a processing error during initial negotiations with the remote computer"
But I'm able to establish l2tp/ipsec vpn connection to the same vpn server with my iPhone 4.
Below is isakmp debug log from lns router(cisco 1921) when I've tried to establish vpn with windows client. Anything useful from these logs to point me on the right direction to finally solve this problem with windows clients.
#debug crypto isakmp
*Apr 8 10:56:47.018: ISAKMP (0): received packet from 186.51.43.137 dport 500 sport 987 Global (N) NEW SA
*Apr 8 10:56:47.018: ISAKMP: Created a peer struct for 186.51.43.137, peer port 987
*Apr 8 10:56:47.018: ISAKMP: New peer created peer = 0x3296C24C peer_handle = 0x80000068
[Code]...
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Aug 22, 2012
Is it possible to configure Layer 2 Tunneling Protocol (L2TP) over IPsec on a cisco router like 1921 ISR? This link shows basically what i want to achieve but instead of an ASA, i would like to use just a router with sec..
[URL]
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Apr 26, 2011
We are using a CISCO1921-SEC Router. On the "WAN" side we have 1 public IP Adress assigned by DHCP. At the moment we are using the WAN Interface with a crypto-map as endpoint of some IPSec connections. We set up a zone-based-firewall with "WAN" and "LAN" zone. In this setup all IPSec Endpoints are on one Interface - connections to the "LAN" zone can be managed by rulesets. What about connections between IPSec connections and the zone "self".We like to terminate each IPSec connection in a separated zone. How can this be configured ?Each one on a "tunnel inetface" with "tunnel source ..." binding ?
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May 5, 2011
Equipment Cisco1921, HWIC-1ADSL, 2 x GB Ethernet interfaces (Only one used for local LAN) Software IOS Version 15.1(1)T2..I have been asked to configure this router to provide an IPSEC tunnel back to our central office.We have been provided with an ADSL business class 7MB service from Telecom Italia, they have presented the circuit to our office with no terminating equipment (wires only). Telecom Italia have provided us with some IP addressing information as follows (I will not disclose the entire IP address) [code]
I can see that the packet count is increasing both inbound and outbound on the ATM interface. I have read many documents and tried many different way to try and get this resolved, I even logged a call with Cisco but no dice.
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Sep 13, 2011
I need to connect 3 computers in local lan by using ipsec on win7. How can I do that? I tried to do something from windows firewall; but I see incorrect header checksum errors in wireshark.
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Aug 16, 2012
I have an exisitng ASA5520 which is already working with remote clients using Cisco vpn client configured using ipsec over tcp, I am now trying to get vpn access for Iphones working and having a problem where once connected the Iphone cannot ping any internal device. The configuration on the Iphone does not allow for Ipsec over tcp and therefore uses udp 500 by default, if i create a new profile from a pc and do not use ipsec over tcp it has the same issue where it establishes a vpn tunnel but cannot ping any internal device as soon as I change the profile to ipsec over tcp it works fine.
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Mar 17, 2011
I can't connect to the internet. When I double click Local Area Network under Network connections it says it has both sent and received packets. It is set to automatically acquire an ip address. The computer is connected to a router. I can ping 192.168.1.1 but when I try to reach my router's settings it says page can't be loaded. I tried to hook the computer up directly to the modem and connect that way. It said it was connected and it was sending packets but I still couldn't do anything. I've turned off the windows firewall. The computer is Windows XP SP1.
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Feb 12, 2011
We have Linux server (CentOS) and nearly 120 computers in the local network (192.168.1.0 255.255.255.0) and nearly 20 computers have their own IP-address (real address). Periodically the 192-network computers can't browse the Internet; ping to the server is working; computers which have their own address are working properly
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Jan 5, 2013
I am trying to connect my RV110W from my home office to our office IPSec router. I have a dynamic IP address and am using DDNS, therefore the RV110W local endpoint needs to be configured with my FQDN, not the IP address as this will change.
On page 100 the manual states
Step 4 -
• Local WAN (Internet) IP Address—Enter the public IP address or domain name of the local endpoint (Cisco RV110W).
This option is not available in my router - I am running firmware 1.2.0.9
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Jan 16, 2013
I configure anyconnect vpn on cisco asa version 8.2. vpn user need to access internet so i configured split-tunnel. the split-tunnel working but i do not want to use split-tunnel for security reason. i want vpn user use our local network internet. how i do it?i think that i must do vpn user subnet nat and then what i need do additionally?
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Mar 14, 2013
I have a Cisco ASA 5510 I am using ASDM 6.1
I have a LAN and a DMZ and an internet connection. I am using one of the internet connection IPs to host a HTTP service on a server in my DMZ. (its the same interface as my internet connenction but a different IP to the one used for internet connectivity)
so say my LAN is 192.168.1.x
and my DMZ is 172.168.1.x
I can access DMZ from Lan and vice versa. when i try to access the public IP (or URL) from a pc in my LAN i get nothing.
I have enabled DNS rewrite (doctoring) but it is still not working. the HTTP service is available from other sites.
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Jun 10, 2011
I configure for our office site to site VPN project. Now I configured already Site to site vpn between ASA 5510 and 1841 router.
HQ LAN
Branch LAN 10.2.1.0/24 >>> ASA 5510>>>>> 1841 >>> INTERNET <<<<<< 1841 <<<<<< 10.30.3.0/24 ^^^^ Call Manager 2851
Now can access from Branch LAN to HQ LAN each other. I face the problems that are
1) In branch LAN , they can access HQ LAN & resource , but cannot access internet. I didn't configure NAT on PH Router
2) Can I access internet from BRANCH LAN through HQ LAN to INTERNET. Or Can I access Internet from Branch LAN from PH Router directly while access to VPN to HQ LAN ?
3) In Branch Site , hard phone cannot work but soft phone on PC can call to HQ. Hard phone IP are same in Remote Network (172.16.1.0/24 ) . Is it problem ? how can I configure separately ?
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Mar 17, 2011
I can't connect to the internet. When I double click Local Area Network under Network connections it says it has both sent and received packets. It is set to automatically acquire an ip address. The computer is connected to a router. I can ping 192.168.1.1 but when I try to reach my router's settings it says page can't be loaded. I tried to hook the computer up directly to the modem and connect that way. It said it was connected and it was sending packets but I still couldn't do anything. I've turned off the windows firewall. The computer is Windows XP SP1
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Mar 17, 2011
I can't connect to the internet. When I double click Local Area Network under Network connections it says it has both sent and received packets. It is set to automatically acquire an ip address. The computer is connected to a router. I can ping 192.168.1.1 but when I try to reach my router's settings it says page can't be loaded. I tried to hook the computer up directly to the modem and connect that way. It said it was connected and it was sending packets but I still couldn't do anything. I've turned off the windows firewall. The computer is Windows XP SP1.
More info:
ip config /all
netstat -n
ping&tracert 192.168.1.1
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Mar 13, 2011
What I'm trying to do is create a private network for local file sharing but also have internet access. There is a WRT54G router connected to a satellite modem in a separate building, just barely close enough to connect from my laptop, which is what sparked my original idea to use my WRT54GL as an access point.
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Oct 5, 2012
We want to puchase new Cisco ISR 1921/K9 . i want to know does it support the following sample IP-SLA commands
ip sla 2icmp-echo 172.16.1.2timeout 500frequency 1ip sla schedule 2 life forever start-time now
track 10 rtr 1 reachability
delay down 1 up 1
!
track 20 rtr 2 reachability
delay down 1 up 1
ip route 0.0.0.0 0.0.0.0 192.168.1.2 track 10ip route 0.0.0.0 0.0.0.0 172.16.1.2 track 20
Im asking above question because we will need to enable ip-sla on the mentioned router. as i read on the cisco webside, it says Cisco-ISR-1921/K9-IP Base support only IP-SLA RESPONDER feature nothing else. If Cisco-921/K9 does not support the above commands , should i go for ordering Cisco-1921-SEC/K9 ?
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Sep 18, 2011
I have a very annoying problem with my Linksys WRT54G2.When I connect a wireless device (laptop, phone, TV, Ipad) to my wireless network I only see a Local connection, no connection to internet. After resetting the router (power off for several seconds) the internet-connection is available again.I have to do this every 1 - 2 days.
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Jan 11, 2013
I have been playing around with a 1921/K9 router in our dev environment. It's been about 24 hours and I just can't seem to get it to work. My DHCP Server is working hence my internal network is getting IP address as desired. But Router doesn't seem to connect to internet for some reason.
I am trying to make it a internet facing router with static IP address (67.210.209.113). LAN side of this router will be our .11 Network which is our Dev Network.
Here is some network information:
WAN:
Interface IP: 67.210.111.111
Default Gateway: 67.210.111.222 (I can ping this address through router)
tlm1921A-11A#ping 67.210.111.222
[Code]......
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Feb 24, 2012
I have the same 1921 router that I am trying to install at a facility with a Static IP address and Static DNS information to get on the internet and I cannot get the 1921 to access the internet!
Here is my config:
Building configuration...
Current configuration : 4072 bytes
!
! Last configuration change at 09:51:57 Chicago Sun Feb 26 2012 by fbcpekin
! NVRAM config last updated at 09:51:58 Chicago Sun Feb 26 2012 by fbcpekin
[Code]....
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Apr 30, 2012
I am setting up a new 1921 for a public library and I am running into a problem and I bet I am missing something simple. All the internal stuff works and I can ping the outside IP on the 1921 but can't go any further to the internet. The 1921 has the 2 gig ethernet ports, 0/0 is connected to a DSL getting DHCP settings fine from the DSL modem. The other gig ethernet port 0/1 is running the inside network and its function fine, I have a server on it and other clients and they can ping and get dhcp settings etc.I've pasted the config output below and IP addresses of the main actors. [code]
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Jun 5, 2011
we use the Cisco VPN-Client to connect to our CISCO1921 Router and want to go out again on the same interface to the internet. We configured the connection with the IOS scurity package, have no split tunneling - so the client is forced with it's default gateway to our router - we also have pushed our local dns-server to the client and he gets dns results. Now I think we have to got out with some kind of NAT, because our client has a private IP from the IPSec Client pool. At the moment we have no NAT inside/outside, bacause we only use official IP addres in- and ouside (data-room usage).
- Is it possible to get the NAT function going in and out on the same interface with crypto_map IPSec user comming in and going out to the internet ?
- Is it more secure to configure this with vrf ?
- Has some a link to example configurations for this ?
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Sep 22, 2011
sample configuration for internet failover . i have 2 ISPs with one coming in thought a serial cable and another through internet and would wish one take over after the other has failed .The router is Cisco 1921 .
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Feb 13, 2011
I want to setup a DC++ HUB for sharing data within the university local network. We have addresses of the form 172.31.*.*. These addressed are accessible within the university bu non routable outside on the internet. My plan is to setup a local HUB for DC++ for sharing data within the university intranet. So even if internet is unavailable data can be exchanged through LAN. This HUB must not be accessable outsied the university network.how should I do this all..implementing network sharing other than DC++. My basic idea is that everybody can share their data and the data is searchable from one common interface( Web interface is better option, if possible). And data featching should prefferably be from many hosts, using multiple connections so that speed can be improved..
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Mar 3, 2012
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Jun 28, 2012
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Nov 1, 2012
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Mar 17, 2012
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Apr 4, 2013
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I read somewhere that following service need to be checked to make sure they are running: upnp, ssdp in services. I checked those and they are all running.
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May 21, 2011
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