Cisco VPN :: 7200 - L2TP Over IPSec With Draytek
Apr 20, 2011
I have a Cisco 7200 and need to establish L2TP over IPSEC session with a Draytek Fly200. Draytek must use L2TP over IPSEC to provide LAN-to-LAN connectivity. IPSEC phase 1 and 2 is ok, L2TP tunnel is also established, but on cloned virtual-access IPCP negotiation is not completed:
*Sep 16 09:50:36.911: %LINK-3-UPDOWN: Interface Virtual-Access3, changed state to up
L2X_ADJ: Vi3:midchain adj reqd for ip 0.0.0.0, cid 0
*Sep 16 09:50:38.911: Vi3 IPCP: O CONFREQ [REQsent] id 2 len 10
*Sep 16 09:50:38.911: Vi3 IPCP: Address 192.168.176.2 (0x0306C0A8B002)
*Sep 16 09:50:38.911: Vi3 IPCP: Event[Timeout+] State[REQsent to REQsent]
I think my VPDN configuration from Cisco side is not correct, but I cannot find configuration examples for this kind of solution.
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Apr 7, 2011
I'm trying to setup a L2TP over IPSEC vpn connection on a PIX 501 that will use key sharing. In addition, I have a PPTP connection setup which allows connectivity. Two things, the L2TP vpn client I am using does not connect and times out. The second is that the PPTP client I use does connect, but cannot ping any resources on the network.
The config on the PIX is below:
Building configuration...
: Saved
:
PIX Version 6.3(3)
interface ethernet0 auto
interface ethernet1 100full
nameif ethernet0 outside security0
nameif ethernet1 inside security100
enable password tdkuTUSh53d2MT6B encrypted
[ Code] .....
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Apr 11, 2013
I am trying to get a L2TP/IPSEC VPN going on one of my servers behind the DIR655 router I have used Port Forwarding and Virtual Server and neithere seem to allow these ports to be open in either situation a port scan shows the ports closed..My ISP (Comcast) does not block these ports?
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Oct 28, 2011
I had my PPTP VPN working great at my old place, now that I moved I also upgraded my speed which means I got a different 2Wire. This 2Wire can only do DMZ mode and can't bridge. ( I tried everything, including the mdc page, no go). This works fine apart from blocking GRE somehow. I'm using a Mikrotik RB450G as my PPTP server. Does L2TP or IPSEC use the GRE protocol?
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Nov 26, 2011
I have a stable l2tp/ipsec config that I have been using for many years with the Windows XP native VPN client and the iPhone VPN client.This configuration does not seem to work with the native Windows 7 VPN client. What has changed between XP and 7 on the native VPN client front? I'm running IOS 12.4(15)T5.
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May 22, 2013
I have a 5510 that i have configured for L2TP over IPSEC, not using AnyConnect. The first, and most prevelant being, VPN clients are unable to ping/access any of the hosts that are assigned a static NAT from the inside interface to the outside interface. I was able to circumvent this by adding another static NAT to the public interface for the incoming clients, but this caused intermittent connectivity issues with inside hosts. The second issue involves DNS. I have configured two DNS servers, both of which reside on the internal network and are in the split_tunnel ACL for VPN clients, but no clients are using this DNS. What is the workaround for using split tunneling AND internal DNS servers, if any?
i've had two different CCNA's look at this numerous times to no avail. A ping from a VPN client to any internal host works fine, unless it is one that is NAT'd. You can see in the config where i added the extra STATIC NAT to try and fix the issue. And this works perfectly across the tunnel but only intermittenly from the internal 10.1.4.x network. [code]
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Jun 23, 2011
Co-worker just got a Blackberry Playbook tablet and, try as I might, we cannot get the darn thing to successfully set up a working IPSEC/L2TP vpn tunnel to our ASA 5510, which acts as a multi-purpose VPN concentrator. Any luck setting up L2TP/IPSEC VPN to ASA from Blackberry Playbook?
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Sep 1, 2011
I'm opening a new topic related to my problem with the VPN connection, to avoid confusion, since there are many, in the old information, no longer required.
I would like to configure my ASA5510 L2PT/IpSec to accept connections from Windows clients. I happen to authenticate via AD credentials. When I try to connect is because the error 691. I enabled debugging on the machine the following:
debug crypto isakmp 3
debug crypto ipsec 3
debug ldap 255
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May 20, 2013
We have a Cisco 7204 G1 running c7200-advipservicesk9-mz.122-33.SRE7.bin and we're having a lot of difficulties getting a VTI working to a Cisco 2921 with adv. security. I've ruled out that the 2921 is at fault by successfully establishing a VTI to another 2921 and a 7200 running a different IOS release.
We see the tunnel come up, but when I sent a ping from the 2921 to the 7204 there isn't a reply. When I look at the results on the 7204 from a 'sh crypto engine connection active', I see the decrypt counters increase, but I don't see the Encrypt counters increase as it's trying to reply to the ping. I'm not sure if this is because there is an issue with the encryption or whether there might be a more fundamental issue with the router not replying to the pings.
I've tried the following IOS releases (c7200-advipservicesk9-mz.122-33.SRE7 & c7200-advipservicesk9-mz.122-33.SRE6) and they all behave the same way - this makes me think it might be a config issue rather than and IOS bug which is what I first thought. c7200-advipservicesk9-mz.122-33.SRE7.bin.
sh crypto engine connections active
Crypto Engine Connections
ID Interface Type Algorithm Encrypt Decrypt IP Address
1 Tu10 IPsec 3DES+SHA 0 31 10.5.5.1
2 Tu10 IPsec 3DES+SHA 19 0 10.5.5.1
1001 Tu10 IKE SHA+3DES 0 0 10.5.5.1
Here is a copy of my config on the 7204 - the other end (Cisco 2921) is configured in the same way.
crypto isakmp policy 1
encr 3des
authentication pre-share
[code].....
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Feb 23, 2011
Successfull in setting up an L2TP/IPsec tunnel through NAT-T against a Windows 2008/ R2 RRAS server? I am using an 881 router and the layout is someting like this:Client -> 881 -> NAT -> internet -> Windows 2008 RRAS.The tunnel goes form the 881 to the Windows server (not from the client...).
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Mar 25, 2011
i have configure l2tp/ipsec vpn on cisco ASA 5520 and also configure windows 7 client but its getting error
Error in ASA debug log
debug crypto isakmp 7
Mar 26 07:44:28 [IKEv1]: IP = 59.161.130.13, IKE_DECODE RECEIVED Message
[Code]......
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Mar 26, 2013
i am now trying to configure a Cisco Small Business Pro SRP 521w router for a branch office, i am trying to get the router to connect to a L2TP VPN server inside my datacenter, but seems to me like L2TP VPN client function is not supported inside the SRP 521w router.
Can Cisco implement L2TP VPN client into the firmware for the SRP 521w router in the future ?
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Nov 14, 2011
i configurated ipsec vpn at cisco asa 5510. all them are working very well. now i want to change ipsec remote vpn to L2tp over ipsec.i have router, asa and 3750 switch. all nat translation are done at router , ipsec vpn configurate at asa.
this is my ipsec configuration. this is working config. as you see i do static nat asa outside ip for vpn at router. now i want l2tp over ipsec. before i do it i have some question
1. must i do static nat port udp 1701 for l2tp over ipsec vpn? can i write access list at asa to open port 1701?
2. can i remove this static nat or i can not be change anything.is this nat is true for l2tp over ipsec vpn?
3.as you see user authentication from radius server at ipsec vpn. i also want this is same as l2tp over ipsec vpn..
4. i think that i must be add this addtional config. is this true? tunnel-group DefaultRAGroup ppp-attributesno authentication chapauthentication ms-chap-v2
is this config enougth for l2tp over ipsec vpn?? what is addtional config i need?
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Dec 29, 2012
Any good vpn config for a router to allow vpn connections from Android phones using L2TP-IPSEC? Router is an 1841 running most current IOS ver 15.1.
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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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Jan 25, 2011
We have ASA 5520 running 8.2(3) software and we're trying to make Remote Access VPN (l2tp/ipsec) working from Android. We succeeded in making IPSEC tunnel (ending "Phase 2 completed"), but we cannot make L2TP tunnel working.We're using RADIUS for L2TP authentication, but ASA doesn't even try to check credentials entered by use. The same set of credentials entered on Windows {XP, VISTA, 7, Mobile} works ok. Which debugging options should we turned on?
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Jul 17, 2011
I have a Cisco ASA 5505 Firewall. I am using windows VPN. I have configure IPSEC/L2TP Vpn. And now i hv some problem..
1) VPN is connected but I notices that VPN client connection gets in "HANG" mode after couple of minutes.
2) I am getting error when i try to connect my SQL Server (windows 2008) [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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Dec 21, 2010
I'm trying to setup a L2TP VPN Connection on my ASA 5510 to connect with Android/Windows (Native Clients).I'm using the newest Releases:Cisco Adaptive Security Appliance Software Version 8.3(2) Device Manager Version 6.3(5)
My asa config just the interesting part:
crypto ipsec transform-set trans esp-3des esp-sha-hmac crypto ipsec transform-set trans mode transportcrypto ipsec security-association lifetime seconds 28800crypto ipsec security-association lifetime kilobytes 4608000crypto dynamic-map dyno 10 set transform-set transcrypto map vpn 20 ipsec-isakmp dynamic dynocrypto map vpn interface outsidecrypto isakmp enable outsidecrypto isakmp policy 10 authentication pre-share encryption 3des hash sha group 2 lifetime 86400no crypto isakmp nat-traversal
[code]....
If i try to connect with a Windows 7 Client (NOT behind NAT) I get the Error 691.
I see that Phase 1/2 are working with debug:
Dec 22 16:32:16 [IKEv1]: Group = DefaultRAGroup, IP = XXXXXX, PHASE 1 COMPLETED
Dec 22 16:51:25 [IKEv1]: Group = DefaultRAGroup, IP = XXXXXX, PHASE 2 COMPLETED (msgid=00000001)
Then I see this "Error":
Dec 22 16:51:26 [IKEv1]: Group = DefaultRAGroup, IP = XXXXX, Session is being torn down. Reason: L2TP initiated
I don't understand why it doens't work....I tried many templates from the net but nothings works.
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Apr 5, 2013
I am facing a problem when configuring the ipsec vpn on my 7200 router. [code]
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Mar 3, 2012
I have added an ASA 5510 to my network between the Internet and a Windows 2008R2 server running ForeFront TMG. Before the ASA was added, vpn clients using Microsoft Windows 7 vpn client using L2TP/IPsec connected to our vpn. After ASA was added, clients can no longer connect. I would like to know how to configure the ASA to forward the vpn requests to the ForeFront TMG server for authentication and access to internal network resources. Mail is forwarded appropriately through the ASA to internal mail server and Internet access for LAN users works just fine.
Topology:
ASA 5510 (outside interface is ISP IP address, inside interface is 192.168.1.1)................Forefront TMG (outside nic 192.168.1.2, inside nic is LAN gateway IP address).
I have altered the registry key of the client vpn pc's per Microsoft Technet URL
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Jan 23, 2013
I´ve try to configure a VPN IPSEC between a Cisco 7200 and Juniper ISG2000.The tunnel looks like good but when a ping is sending, I´ve packets lost and getting the next error:IPSEC(epa_des_crypt): decrypted packet failed SA identity check.My configuration en both sites is the follow: [code] What is the possible problem here. mea be in the Cisco 7200 configuration or in ISG Configuraton??
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May 2, 2011
I’m configuring a L2TP IPSEC VPN on a 5505 asa so that windows 7 clients can natively connect. It connects correctly during Phase 1 and 2, but I can’t ping anything or access resources on the internal network. This is my first time working with an ASA.
Master# sh run
: Saved
:
ASA Version 8.2(2)
!
hostname Master
domain-name service.local
[code]....
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Mar 26, 2012
I've recently installed a Cisco ASA with a NAT'd configuration, I'm in the final stages and would like to configure a lan to lan VPN to a Draytek box and that unfortunately isn't going well and having spent almost two days on it am starting to wonder if it will actually work. I can get it to connect but no data seems to be transmitted between the two.
Site A on the range 10.0.0.0 has the ASA and Site B is on the 192.168.16.0 and is a Draytek 2930.
Below is the ASA config created with the lan to lan wizard:
route outside 0.0.0.0 0.0.0.0 193.164.x
timeout xlate 3:00:00
timeout pat-xlate 0:00:30
timeout conn 1:00:00 half-closed 0:10:00(code)
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Jun 27, 2011
We're trying to establish a "simple" vpn tunnel between a cisco 800 and a draytek 2910, situation:
LAN (192.168.2.0 ) --cisco800 ----- internet ------ draytek ----LAN (192.168.20.0 )
WAN-ports , internet access on both sides are working fine.vpn configuration part cisco:
crypto isakmp policy 1
encr 3des
authentication pre-share
group 2
[code]....
What can be wrong: other protocol? something with pfs? diffy hellman group: i heart draytek used 1 and cisco 2?debugging on the cisco site keeps on ginving the error message:
entry number 487 : CRYPTO-4-IKMP_BAD_MESSAGE
IKE message from x.x.x.x failed its sanity check or is malformed
timestamp: 4002880
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Jul 13, 2011
I have a cisco 877 router connected to our adsl broadband at our head office. I have managed to set this up with Nat and DHCP all working to let multiple users access the internet through our single static ip supplied by the ISP lets say the ip is 1.2.3.4.Our internal network is 192.168.1.0 255.255. 255. 0.I have a draytek vigor 2600 at a branch office set up the same with a static ip addresss supplied by the ISP lets say the ip is 5.6.7.8.The internal network is 192.168.4.0 255.255.255.0
I am trying to set up a VPN between the head office and branch office so the branch office users can connect to our internal server(lets say ip is 192.168.1.2) to receive group policies,access files and also telnet into our database server(lets say ip is 192.168.1.3).I have attached a sort of running config that i have pieced together from bits i have read on this site and others. I have tried these settings and other permutations of these settings but i cant seem to establish a tunnel even though when i show int tunnel0 on the router it says tunnel is up and line protocol is up, if i show ip route it shows that there is an ip address for the tunnel and that is about it(No vpn light on).
If it makes sense and that I have entered the right information? I have highlighted the parts i am not sure about in red(Quite a bit and obviously not the exact settings but what i think it should be). Once all the settings are correct on the cisco will it automatically establish the vpn or do i have to dial it from the draytek.
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Jun 26, 2011
My company is setting up a small branch in Scotland (the main office is in Bristol)All we need one desktop, one laptop, a printer and we will be using a DraytekVgn router, and a small switch.We need VPN to this office to set up an inhouse application.How would I set this up with minimal configuration.......ie...Does BT send a router/modem with the set up..Is there anything inside the router configuration that has to be changed.(I know PPTP etc has to be enabled).Do I use the same vpn external ip address we use for our other 2 branches....Can I change the IP Address of the router from 192.168.1.1........to say 192.168.100.1.
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Apr 11, 2013
we have bought 2 Draytek 2830 Routers for our 2 businesses that are in different locations. We are looking at setting up a VPN between them and wanted to do it similar to the following:
http:[url].....
The thing the "Dial IN" site has a static IP from the ISP but the "Dial Out" site has a dynamic IP.what the best approach to take with this would be as I guess the link between the routers wouldn't work if the address kept changing?
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Sep 18, 2012
Any experience with IP Routing on Draytek routers?We have a 2830 and I'm trying to set it up like the following: [code]
Now a server in VLAN 2 with address x.x.x.77 can ping x.x.x.74, but I can't access any of it's services (Apache, SSH etc) from the internet (testing through my phone and other people).I've removed the IPs from the NAT pool in the WAN settings, setup LAN2 for IP routing and put it into the second VLAN, but apart from that not done much else.
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Dec 17, 2011
I have recently changed my Router to a Draytek Vigor 2830N from the standard O2 broadband router. When I swap them out I get no internet access via the main PC that is connected via ethernet. However I can access internet via WLAN on any other device. here are the ipconfig details for before and after swap (same)
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Jun 19, 2011
my local site has Cisco 2811 router connecting locally to ASA 5520. Remote site A has Draytek Vigor2950. I have working vpn between local subnet 10.0.0.0/24 and remote site A 10.100.6.0/24. I have remote sites B (10.100.7.0/24) and C (10.100.8.0/24). I would like to route traffic from local site to remote sites B and C via the local-to-remote A vpn. On Draytek routers B and C, I have added to subnet 10.0.0.0/24 to the remote network profile list. On local router, I route traffic for subnets 10.100.7.x and 10.100.8.x to the ASA. On ASA I have added these subnets to the profile for local-to-remoteA vpn.But the vpn will not establish when I attempt to ping from local to remote B or C.
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Jul 14, 2011
I am currently using a Draytek 2820 at work and I am needing to port forward port 3333 to two different computers at the same time
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Jun 14, 2011
I'm having some rather odd issues with my wireless connectivity. Running a draytek 2830n router. The wireless connection drops out at random sometimes, at other times it connects (shows full reception) but does allow any kind of internet connection. Plugging in by lan cable allows normal function.I have no clue whats going on but I did just notice that shutting down one of the laptops connected to the network (Dell lx502) appears to have solved the problem for the moment. I've not had a chance to test this as a long term solution. However I believe this is the only laptop with a dual band wifi card.This problem was also occurring on our previous router, a draytek 2820vn but the symptoms were a bit different and this laptop was not there at the time.Is it possible for one machine to knock out an entire wireless network? The other change I made yesterday was to activate the bind ip to mac function on the router for our new NAS as I was messing around with ftp configurations.
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