Cisco :: L2L IPSec Tunnel - ASA To 3800 Router

Mar 3, 2011

I have been struggling for a few days with getting site-to-site traffic working across a L2L IPSec tunnel. At this point, I have the tunnel up, and I see packets being decrypted on the correct IPSec SA's when I ping from a local network computer on the ASA side to a local network computer on the router side. I cannot ping from one side to the other, but those packets are getting through. We have another L2L tunnel that is from that ASA to another remote site's ASA, and that is functional. I have mirrored the configuration for ACLs, etc. from that site, so I believe that the issue is with the packets getting incorrectly translated by the NAT/NONAT statements/ACLs on the router side.

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Cisco VPN :: L2L IPSec Tunnel - ASA To 3800 Router?

Mar 2, 2011

I have been struggling for a  few days with getting site-to-site traffic working across a L2L IPSec  tunnel.  At this point, I have the tunnel up, and I see packets being  decrypted on the correct IPSec SA's when I ping from a local network  computer on the ASA side to a local network computer on the router side.   I cannot ping from one side to the other, but those packets are  getting through.  We have another L2L tunnel that is from that ASA to  another remote site's ASA, and that is functional.  I have mirrored the  configuration for ACLs, etc. from that site, so I believe that the issue  is with the packets getting incorrectly translated by the NAT/NONAT  statements/ACLs on the router side. 

The ASA is: Cisco Adaptive Security Appliance Software Version 8.2(2)Hardware:  

ASA5520, 512 MB RAM, CPU Pentium 4 Celeron 2000 MHz The router is:Cisco IOS Software, 3800 Software (C3845-ADVENTERPRISEK9_SNA-M), Version 12.4(20)YA3, RELEASE SOFTWARE (fc2) Router Config:!version 12.4!card type t1 0 0!no ip cef!ip multicast-routing no ipv6 cef!crypto isakmp policy 10 encr 3des authentication pre-share group 2crypto isakmp key xxxxxxx address nn.nn.12.130!crypto ipsec security-association lifetime seconds 86400!crypto ipsec transform-set 3DES-SHA esp-3des esp-sha-hmac !crypto map NOLA 11 ipsec-isakmp set peer nn.nn.12.130 set transform-set 3DES-SHA set pfs group2 match address VPN-ACL!controller T1 0/0/0 fdl both cablelength long 0db channel-group 1 timeslots 1-24!interface Loopback0 ip address 1.1.1.1 255.255.255.252 ip virtual-reassembly no ip route-cache crypto map NOLA!interface GigabitEthernet0/0 no ip address duplex auto speed auto media-type rj45!interface

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Cisco WAN :: Setting Up IPSec Tunnel Between 3800 And 2600 Routers?

Jan 19, 2013

I'm setting up a IPSec Tunnel between 3800 and  2600 routers over the internet.
 
Do I need to create a tunnel interface as they suggest in this document?  [URL]
 
I just watched a couple of you tube videos saying I don't need to do that...

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Cisco WAN :: 1941 Router - Enable IPSec Virtual Tunnel Interface With Tunnel Mode IPv4

Sep 23, 2012

I'm in process of purchasing a new Cisco routers for our branches that will be used primary to enable IPSec virtual tunnel interfce with "tunnel mode ipsec ipv4". does the default IOS IP Base supports this feature? or i need to purchase DATA license or SECURITY license?

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Cisco VPN :: Lan To Lan Dynamic VPN With IPSec And QOS On Physical Interface 3800

Feb 3, 2011

I have a network with Two 3800 Cisco Routers as Central and many Cisco 2811 Router as Branches. Now I set two Tunnel on each router connection Interface FastEthernet from each 2811 to SubInterface Fastethernet on 3800. I set OSPF as Routing Protocol and I configure QOS on Tunnel connections. Then I have a safe connection with backup connection between 3800 Router and each 2811 Router. Now I want to set VPN with IPSEC and Certification Authentication with CA Server for Security all connection. I set IPSEC and ISAKMP and Certificate on each Router and Set Dynamic VPN on Cisco 3800 Router and Static VPN on each Cisco 2811 Router. Now when if I configure tunnel with Crypto map, it works correct and all packets are encrypt. But if I try to set crypto on physical Interface(because I want to set qos on tunnel then protect packets on physical interface) however all packets are routed but crypto and encrypt d o not work. Set qos on tunnels and crypto on fastethernet interface.

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Cisco Security :: Tunnel Mismatch Between A PIX 515E Version 7.2(2) - 3800 12.3(11r)?

Mar 11, 2007

I have a tunnel between a PIX 515E version 7.2(2)and a Cisco 3800 version 12.3(11r). There is a mismatch somewere in the configs but I cannot find it. I have included the configs and the syslog errors.

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Cisco Routers :: Set A VPN IpSec Tunnel GW To GW Tunnel Between RV110W

Oct 17, 2012

I am using a Cisco RV110W (Firmware 1.2.09) in a branch and I would like to create a VPN Tunnel to another site that has a Cisco RV042 (firmware v4.2.1.02)
 
What would be the correct Configuration? the current configuration I am using is
 
in the RV042 i am using
 
Check Enable 
Local Group Setup
Local Security Gateway Type : IP Only
IP Address : RV042 Pulbic IP address

[Code].....

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Cisco VPN :: Can 881 Router Create L2TP / IPsec Tunnel Via NAT

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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Cisco VPN :: Configure Remote Vpn Ipsec Tunnel On 800 Router?

Mar 19, 2012

how can you configure remote vpn ipsec tunnel on a Cisco 800 router?

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Cisco VPN :: Configuring IPSec VPN Tunnel ISR 2921 Router With Watchguard?

Aug 28, 2012

I am configuring a vpn ipsec tunnel with cisco isr 2921 router and Watchguard edge 1250e. I have the watchguard configured so I just need to make sure I have everything setup on the cisco side. At this point, there is no communication as I am not sure if I configured it correctly. Should I do the crypto map on g 0/0 or dialer 1?
 
aaa new-model
!
!
!
!
!
!
!
aaa session-id common
!
!
no ipv6 cef

[code]......

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Cisco VPN :: Getting IPSec Tunnel Established Between 887VA And SRP527W Router?

Jul 22, 2012

I'm having some problems getting an ipsec tunnel established between a cisco 887VA router and a cisco srp527w router.I am working from a few text books and some example materials. I have worked through many combinations of what I have got and am still struggling a little bit.I look at debug results and it appears as though the policies do not match between the devices:
 
Jul 23 05:44:37.759: ISAKMP (0): received packet from XXX.XXX.XXX.XXX dport 500 sport 500 Global (R) MM_NO_STATE
 broute1# 
Jul 23 05:44:57.079: ISAKMP:(0):purging SA., sa=85247558, delme=85247558
 broute1# 
Jul 23 05:45:17.031: ISAKMP (0): received packet from XXX.XXX.XXX.XXX dport 500 sport 500 Global (N) NEW SA

[code]....

Some specific questions:
 
1) on the SRP in the example's I have used (and I have a few SRP->SRP VPN's that work) I see you need to enter the preshared key, I'm not seeing in the examples I have used anything about the IKE preshared key on the IOS box. Any examples where you use the preshared key for IKE? I wonder if this is my primary issue as it states clearly in the log that there is no Preshared key :|
 
2) I have used a mish mash of names between the various sections as on the SRP the naming convention isnt the same; ie: which parts of the IPSEC negotiation come from the IKE policy section and which from the IPSEC policy section. Do the names really matter across different ends of the VPN?
 
3) I notice when I perform this command in the(config-crypto-map)#:
 
set peer FQDN

It is converted to:

set peer XXX.XXX.XXX.XXX
 
Is this expected? I want the device to look at the FQDN as this particular host is using DDNS and not use a static IP address. 

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Cisco VPN :: Ipsec Tunnel Between Two 881

Oct 19, 2011

- Ipsec tunnell between two 881's
- An Aruba access point trying to set up a tunnell back to controller through the ipsec tunnell, on udp 4500
- Even though traffic shouldn't be NAT'ed (and other traffic is not), udp 4500 is NAT'ed
 
I guess this might be default behaviour, thing is that it used to work when it was set up as a route based easy vpn.

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Cisco :: How To Create Ipsec Tunnel

May 4, 2011

how to create ip sec tunnel using these parameters. customer ip where tunnel has to be connected 1.1.1.1

ISAKMP Parameters: (Phase I)
Encryption: AES-256 or 3DES
Authentication Mode: Pre-shared key

[Code]......

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Cisco :: IPsec VPN Tunnel Between 2820 And 871?

Mar 9, 2011

We have a Cisco 2820 that serves as a hub and our spokes are Cisco 871s. Its been working for a while and for some reason last week. Http and https traffic over the tunnel is having connection issues. I can Remote desktop or PCanywhere into the remote PCs. From that PC I can ping internal IP address or IP of the webmail server or internal webserver with no issue. But if I access it over the browser it times out or it will work and stop working again. Basically ica, icmp, pcanythere, rdp traffic works over the tunnel but not http or https.

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Cisco VPN :: Force Use Of NAT-T On IPSEC L2L Tunnel

May 4, 2011

can I force an IPSEC L2L tunnel to use NAT-T encapsulation no matter what? Automatic detection says none of the endpoints are behind NAT. I know I can disable it by the "crypto map XXX set nat-t-disable" command, but I want the exact opposite.
 
I have a very strange issue where asynchronos routing is making my life as a technician very hard.
 
A side question; Can I do something about an ISP that is policy-base-routing its ESP traffic (and/or translating it)?
 
ASA5505 ===>===>===> ISAKMP traffic ===>===>===> ASA5510
212.178.155.73                                                                 80.62.yyy.xxx (traffic source IP: 212.178.155.73)

[Code].....

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Cisco VPN :: ASA Or 871 IPSec L2L To SSG-140 - Tunnel Is Up But No Traffic

Aug 8, 2012

i am curently troubleshooting a ipsec l2l VPN between
 
1. ASA 7.2(4) to SSG-140
2. Cisco 871W to SSG-140
 
In both scenario's the tunnel is nicely established, and traffic goes into the tunnel, but nothing comes out. All encap's, but no decap's                    
 
It seems like a routing issue, but we can not find anything on both sites.
 
So maybe i m running into a (known) issue between cisco VPN equipment and the SSG-140?
 
Could it be a proxy-id issue? Cause they configure stuff like 10.1.1.0/24 and i configure 10.1.1.0 0.0.0.255

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Cisco VPN :: PIX-501 IPSec To Configure Tunnel

Mar 24, 2011

I'm attempting to configure a tunnel on a PIX-501 version 6.3. It's an old device that's due to be replaced soon, but unfortunately we need a tunnel now... I have been using this document as a reference (6211): URL ,The remote end is a sonicwall.
 
The problem seems to be that the pix never sees the interesting traffic for the tunnel, and never tries to initiate a connection. I have enabled crypto ipsec and crypto isakmp debugs, but no data is ever displayed, even when attempting to access a device on the remote side of the tunnel! Someone had tried to set up this device with some tunnels in the past, but was never successful, so I'm thinking there might be remaining commands in the running-config causing problems.

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Cisco VPN :: 887 - Static NAT With IPSec Tunnel

Oct 29, 2012

configuring some static NAT entries on a remote site 887 router which also has a IPSec tunnel configured back to our main office. 
 
I have been asked to configure some mobile phone "boost" boxes, which will take a mobile phone and send the traffic over the Internet - this is required because of the poor signal at the branch.  These boxes connect via Ethernet to the local network and need a direct connection to the Internet and also certain UDP and TCP ports opening up.
 
There is only one local subnet on site and the ACL for the crypto map dictates that all traffic from this network to our head office go over the tunnel.  What I wanted to do was create another vlan, give this a different subnet.  Assign these mobile boost boxes DHCP reservations (there is no interface to them so they cannot be configured) and then allow them to break out to the Internet locally rather than send the traffic back to our head office and have to open up ports on our main ASA firewall. 
 
[URL]
 
So I went ahead and created a separate vlan and DHCP reservation and then also followed the guidelines outlined above about using a route-map to stop the traffic being sent down the tunnel and then configured static NAT statements for each of the four ports these boost boxes need to work.  I configure the ip nat inside/outside on the relevant ports (vlan 3 for inside, dialer 1 for outside) The configuration can be seen below for the NAT part;
 
! Denies vpn interesting traffic but permits all otherip access-list extended NAT-Trafficdeny ip 172.19.191.0 0.0.0.255 172.16.0.0 0.3.255.255deny ip 172.19.191.0 0.0.0.255 10.0.0.0 0.255.255.255deny ip 172.19.191.0 0.0.0.255 192.168.128.0

[Code].....

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Cisco :: Reach Second LAN Over Existing IPSec Tunnel?

Nov 28, 2012

since a few days I'm trying to solve a problem. I've successfully established an IPSec tunnel between two local LANs. In the main office I'm working with a ASA5510 CLI 8.4 and a static public IP address. The branches are using different Cisco 8xx routers and dynamic public IP address. The following picture shows the current configuration:As I mentioned an IPSec Tunnel between the main office "Intern"-LAN 192.168.1.0/24 and an outside LAN 10.10.0.0/24 is successfully established. Now there is a new intern "Admin"-LAN 192.168.2.0/24 at the main office. The users from the outside LAN 10.10.0.0/24 need the possibility to reach this new intern "Admin"-LAN.Can I simply route the traffic from 10.10.0.0/24 to 192.168.2.0/24 via the existing IPSec-Tunnel? Or need I a new IPSec tunnel between the outside 10.10.0.0/24 LAN and the new "Admin"-LAN 192.168.2.0/24?

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Cisco :: DNAT / SNAT After IPSec Tunnel

Aug 24, 2012

I'm going to implement a S-2-S VPN IPSec connection between 2 locations and I've to NAT incomming and outgoing traffic.

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Cisco WAN :: ASA5510 Routing Through IPSEC Tunnel

May 20, 2013

I have an ASA5510 configuration that I'd like to add to.In this configuration there is a site to site IPSEC VPN tunnel to a remote location.It is tunneling a particular subnet for me and everything is working.In the remote subnet, there is an ASA 5525-x connected on the outside interface. Let's say for argument's sake, the outside IP is 210.0.0.1.On the Inside interface, i've configured 10.240.32.0/24 network.The only static route I have configured on the 5510 is the default gateway that goes to the ISP.I assumed that I have to add: route Outside 10.240.32.0 255.255.255.0 210.0.0.1 1.I did this, but i'm not able to reach the destination 10.240.32.0/24 network. I can't see anything hitting the 5525-x and the only thing I see on the 5510 is the building outbound ICMP and the teardown for the ICMP.

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Cisco VPN :: How To Establish IPsec Tunnel Using DNS With ASA 5505

Aug 22, 2011

I´m getting a dynamic public IP from my provider and what I´m trying to do is to establish a remote vpn tunnnel using IPSec which I achieve but every time the sessions resets or the ASA 5505 resets I get a new public IP and I need to put the new IP on the remote client so I can establish the vpn... How can I establish an ipsec vpn  using DNS?  For this scenario the remote vpn client is a vpn phone but it could be for any vpn client. 
 
Private IP                       Public IP                                       Private IP
PBX ---- (LAN) ---- ASA 5505 ---( Internet ) --- Remote Site ( Router ) --- (LAN) -- VPN Phone

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Cisco VPN :: ASA 5505 IPSec Tunnel Not Establishing

May 7, 2012

I have a site to site IPSec tunnel setup and operational but periodically the remote site goes down, because of a somewhat reliable internet connection. The only way to get the tunnel to re-establish is to go to the remote site and simply issue a ping from a workstation on the remote network. We were having this same issue with a Cisco PIX 506E but decided to upgrade the hardware and see if that resolve the issue. It ran for well over a year and our assumtions was that the issue was resolved. I was looking in the direction of the security-association lifetime but if we power cycle the unit, I would expect that it would kill the SA but even after power cycling, the VPN does not come up automatically.

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Cisco VPN :: 5505 - Permanent IPSec Tunnel Between Two ASA

Nov 18, 2011

I configured an IPSec VPN tunnel between two ASA 5505 firewalls. I would like to make sure that the IPSec tunnel (hence the security association) is permanent and do not drop due to idle condition.

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Cisco VPN :: 881 / Route Traffic Thru IPSec Tunnel To DMZ

Jun 29, 2011

I need to route traffic to DMZ (and internal) from the branch office thru the IPSec tunnel. How do I manage that with my Cisco 881?

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Cisco VPN :: ASA5540 / Disable IPSec VPN Tunnel

Mar 29, 2011

I have running more the 30 VPN tunnels on my ASA5540 release 8.3(x).I want to disable one VPN tunnel(temporarily) without removing the configuration either Phase 1 or Phase 2.let me to know the command to disable IPSec VPN tunnel on CLI or ASDM.

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Cisco VPN :: Configuring IPSec Tunnel On ASA5505 V8.31

Aug 9, 2012

I'm having trouble configuring an ASA5505 on version 8.31 code for an IPSec tunnel.  I've done this multiple times on 8.2.5 but can't seem to get my tunnel to even attempt to come up on this ASA.  Not sure if it's relevent or not, but this remote ASA has never been used for another VPN tunnel before.  When I attempt to ping a host on the other side of my tunnel, I just see the following: 8108# sho crypto isa sa
  
There are no isakmp sas
  
My local network is 10.1.1.X/24 and my remote peer network contains 66.37.227.X/24.  I've been working on this for the better part of the day and would love to get it resolved.

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Cisco VPN :: IPSEC Split Tunnel With SR520

Aug 3, 2011

I've created an IPSEC VPN site-to-site from a SR520 (remote office) to a Nortel Contivity(home office)...all works really well on the VPN front as I can communicate effectively over the tunnel.  However, this setup will be deployed at a few smaller sites and I'd like to setup a split tunnel so that Internet bound traffic goes straight  to the Internet while traffic bound for our home office goes over the IPSEC Tunnel. 

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Cisco VPN :: 1900 Routers - IPSec S2S Tunnel Cannot Up

Apr 23, 2012

We have about 9 1900 routers and 1 ASA 5510 for partail mesh VPN network. So 8 1900 connect to 1 1900 and ASA located in HQ and datacenter. All worked well however there is one site running really strange. The tunnel between 1900 is up for a while and down. Reboot router seems to be the only fix. But tunnel to ASA does not seem to be down at all.
 
The issue happened again today, we rebooted the router on site but tunnel still not up. DEBUG shows: deleting SA reason "Death by retransmission P1 "
 
I can see alot of Apr 24 19:57:55.271: ISAKMP:(0): retransmitting phase 1 MM_NO_STATE...
 
To me it seems like the IDE packet sent but never got reply and timed out. I did also check on the other end, the HQ. All other tunnels are still running fine on that router, just this remote site. Plus I got the similiar output when debugging on HQ router.
 
One thing do notice though, there was no match on both router for the ACL to match/permit ESP traffic... I asked on-site staff to reboot the modem used in remote site.

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Cisco VPN :: ASA 5505 - IPSec VPN L2L Tunnel Up But No Traffic

Mar 19, 2011

I have a Site to Site IPSEC VPN Tunnel created with ASDM wizard.
 
Cisco ASA-5505
Peer A: x.x.x.x
Lan A:     192.168.0.0    255.255.255.0
 Fortinet FortiGate-50b
Peer B: y.y.y.y
Lan B:     192.168.23.0  255.255.255.0
 
I start traffic from LAN B with a ping (or telnet it doesn't matter) that receive no reply but tunnel goes up fine.
 
"show isakmp sa" seems ok (says "State   : MM_ACTIVE")
"show ipsec sa" seems ok but all #pkts are zero
 
try ftp, telnet from LAN B to LAN A systems but no one work. "show ipsec sa" all #pkts are zero As soon as I generate traffic from LAN A to LAN B these works (with tunnel already up) also traffic from LAN B to LAN A works.Obviously if I end VPN and start tunnel making traffic from LAN A all work fine bidirectionally, LAN A reach LAN B and LAN B reach LAN A.No msg logged in either two appliance.
 
Seems a very strange problem because seems not related to Phase1 or Phase2 already established.Traffic (routing ?) start works only after at least one packet goes from LAN A to LAN B.No msg logged in either two appliance.Problems begun in ASA version 8.0(4) ASDM version 6.1(3) and remain/continue after upgrade to ASA Version 8.4(1) ASDM version 6.4(1).

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Cisco VPN :: 877 IPSec Tunnel With Dynamic IP Address

Aug 3, 2011

I'm having some trouble configuring 2 cisco routers (877) with ipsec vpn tunnel.The 2 of them are linked to the internet with dynamic adsl's - their ip-addresses changes all the time.when the configuration is based on ip addresses it's working ok, but when I'm trying to use host name with the DDNS feature, it's not coming up, I get a lot of errors...
 
I've searched google and various posts regarding that issue.It's seems like it's possible to do a dynamic-ip to dynamic-ip ipsec tunnel, but I found zero manuals and configuration.I've added the template that I'm using to configure the tunnel with ip addresses.

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Cisco VPN :: Get IPSec Tunnel Between 2 881-s / No Debug Info Comes Up?

May 23, 2011

Iam fairly new to Cisco IOS and am having trouble getting an IPSEC tunnel to come up between 2 cisco 881-s. I have entered both debug crypto isakmp and debug crypto verbose but when I try to ping an internal IP at the other location through my VLAN1 interface no debugging info comes up.

Also my ACL-s for the crypto maps show no activity.  I have tried many things so my configuration files are starting to get really messy.

[code]...

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Cisco VPN :: 881 / Route All Traffic Over IPsec Tunnel?

Jan 30, 2012

We have 7 remote offices and 10 tower locations that utilize IPsec tunnels back to our HQ. We now want to force all traffic including web surfing through the tunnels. What would be the easiest way to acomplish this? I have tried utilizing the crypto map policy to do this, but was unable to acomplish this.
 
Each of our office locationss utilize a Cisco 2811 router and the tower locations utilize a Cisco 881.

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