Cisco VPN :: 5520 ASAs - IPSec VPN Clients Not Being Able To Connect
Aug 25, 2011
I am currently having some problems on our 5520 ASAs. The problem is the IPSec VPN clients not being able to connect. We have had an issue twice this week where this happened. Earlier in the week we had folks not able to sign in, but some folks who were connected already stayed connected. The ASAs had been up for 200+ days and no changes have been made to it recently. At that point I had to reload the ASAs so users could start signing back in to it. Today we had a similar issue, but I didn’t have to reload the ASAs. The issue‘resolved’ itself. The VPN clients are getting Error code: 433 and the ASAs are getting Reason: Peer Address Changed when this occurs.
ASA5520, 2048 MB RAM, CPU Pentium 4 Celeron 2000 MHz version 8.3.2.
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Oct 26, 2011
We have asa 5520 with 8.4(2) release and asdm 6.4(5). When we create new ipsec connection profiles (by ipsec wizard for example), ASA reset all vpnclients sessions active. Now we need to create new profiles, but we have 170 vpnclients sessions active, so we cant'.
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Feb 9, 2012
We have to make disaster recovery site EasyVPN tunnels on Cisco 5505 ASA firewalls. Now there is only one main site and 3 remote sites.For DR we have to use the same subnet as it is on the main site because the Vmware virtual machines will be replicated to DR.For DR we are using Double Take software.What is the best solution for this? I think that we could use Destination NAT on ASAs. The other sites (HQ and remote) will se only the NAT address of theDR and not the real one which is the same as on the main site.We are using IPSec VPN? In packet-tracer on ASA I see that the packet is first NATed and then encrypted, so it should work, yes?
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Apr 12, 2011
I have a pair of ASA5520s in active/active failover - this works fine. Both primary and secondary ASAs are running 8.2(2) code.I have a 30-day temp 50 seat SSL license that I applied to the primary. I then started having problems with L2L tunnels.
I noted that if the 'show crypto isakmp sa' state for an L2L was MM_STANDBY, then the remote protected net could not reach my side. However, I could ping across to the other side at which time the state changed to MM_ACTIVE as I would expect and the remote could then reach my side.
I believe this results from the differences between the two licenses. When I applied the 50 seat SSL lic. it disabled failover, but I was willing to risk that for a few days to do show my customer the benifits of SSL connectivity. Note license differences. Is this causing the MM_STANDBY IKE issue and if so can I overcome it and use the 50 SSL VPN Peers lic.
[code]...
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Nov 5, 2012
We currently have an ASA 5520 communicating with 10 ASA 5510's, all on static outside addresses. I was asked to add 5 additional 5510's on dynamic address. All worked well in testing until it was decided that some of the dynamic clients needed to talk to each other.
My testing shows packets just dying in the 5520.
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Mar 10, 2008
I have configured MS CA and i setup vpn client and ASA 7.0 to make tunnel with certificates.Same configuration does not work with ASA 8.0 I get error
CRYPTO_PKI: Checking to see if an identical cert is
already in the database...
CRYPTO_PKI: looking for cert in handle=d4bb2888, digest=
b8 e5 74 97 f3 bf 25 1c 2e e5 21 3e d1 93 d6 15 | ..t...%...!>....
CRYPTO_PKI: Cert record not found, returning E_NOT_FOUND
CRYPTO_PKI: Cert not found in database.
[code]....
Why the key usage is invalid? What certificate template must be used in MS CA in order to get a regular key usage?
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Dec 6, 2011
Our customer is using multicast in their internal network for their IP video deployemnt. Internallt on the network everything is working great.
We have two folks in management who want to be able to view the live multicast video feeds of the cameras remotely. I have tried to accomplish this using the Cisco VPN client. Although VPN connectivity is good (we can ping the individual cameras) they are unable to view the live multicast feeds. I enabled multicast globally on the ASA and the inside interface and get the same results.
Is there a way for the ASA to support the remote IPSec VPN client to view the multicast strams?
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Jan 28, 2013
We are configured the Remote IPSec VPN on cisco 1800 series router.The Clients are able to login to VPN and access the local corporate network Servers . But VPN Clients are not able to communicate with other VPN clients using their VPN Adapter IP.
Components used :
CISCO VPN Client 5.7
Router 1800 Series
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Dec 26, 2011
You have a Cisco ASA 5520 where clients connect using Cisco Anyconnect SSL VPN, say the URL is connect.whatever.org. You would like for when a user enters either [URL] or just connect.whatever.org into their web browser that it automatically puts the required url...
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Dec 24, 2012
We are trying to manage our Cisco ASA 5520 (8.2.5) SSL clients through Active Directory(ldap).
Currently the SSL VPN tunnel is up and all users are able to connect being authenticated by AD. but Group-policy to AD groups are not working. all the domain users are able to go to all the group policies .
I need to give access only to their respective Group policy in ASA. Following are the available groups and GP.
Code...
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Feb 8, 2011
I have setup an AnyConnect Connection Profile on my ASA 5520.
We have some remote support software which the helpdesk use to connect to PC's remotley and torubleshoot.
I cannot connect to this software using the assigned IP address of the client even though it works fine with our old Nortel VPN.
If I hit the IP address the packet gets all the way to the ASA and seems to disappear.
I have setup an IP v4 access list on the connection profile which allows any/any access b ut still no joy.
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Oct 24, 2012
I have an ASA 5520 8.2(3) and allowing my remote client-to-site-vpn clients to access resources directly connected to my ASA on separate lower security interfaces (not the outside) besides just clients on my internal networks. Someone mentioned to me configuring 'VPN on a stick' however from what I've read this seems to be only applicable when it comes to split-tunneling back out the outside interface (could be off on that). Is this possible on other lower security interfaces as well, and if so what would a mock config that accomplishes that look like (acl's, nat, etc)? Also, if I want internal users to be able to connect to these remote clients once they are active, are there any nat statements necessary (such as nonatting them) or are the vpn clients just seen as internal clients from the rest of the internal network's standpoint by default?
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Jun 27, 2011
I have set up a remote access ipsec vpn on an asa 5520. I can connect, and ping internal ip addresses, however I cannot ping back out to the internet, nor can the internal network ping the vpn clients and dns resolution internal or external does not work. I am seeing nothing blocked in the logs on the asa.
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May 22, 2010
Currently running a pair of 5520 as VPN routers. running 8.0.3, been using only Anyconnect SSL VPN for end users. These boxes do nothing else except serve VPN clients.However, recently we tried testing some IPSEC clients and are realizing that the Anyconnect SSL VPN clients is about 10x slower than the IPSEC client.From my house, downloading either CIFS or FTP, I can pull pretty close to 1.0mbps, while using Anyconnect, I pull 0.1mbps. What could be causing this slowdown? Should SSL VPN performance be on par with IPSEC? Clients all are windows 7, 64 bit. and the testing is being conducted on the same device.
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Nov 19, 2011
The network design is a hub and spoke using a carrier provided MPLS network with a ASA 5520 at the hub that has a IPSec tunnel to another part of the company.This configuration has worked for sometime now (long before I came to the company a couple of months ago).The thing that does not make sense to me is that the those networks out on the spokes did not have a route to the inside interface network of the ASA. With the way this MPLS works, if a network is not in the MPLS network routing tables it will not pass that network. The network was not in the MPLS network, nor was it in any of our edge routers connecting to the MPLS.
These hub networks did have routes both in the MPLS and edge devices for the networks on the other side of the IPSec tunnel and have been reaching them for some time.So what I am trying to understand is how it is possible for these hosts that have no route to the ASA inside interface network, but do have routes to the remote networks, how are they able to successfully pass that traffic? There are no NAT devices between these WAN hosts and the ASA.
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Feb 17, 2011
I have a client that uses the ASA 5520 as both a firewall and VPN termination device. Day to day VPN usage is 30-50 users and the memory (512 MB) is typically at 50% while the CPU is mostly under 30%. I've suggested the RAM be upgrade to 1GB.The client would like to add a large block of VPN users which could see 250-300 concurrent users. What kind of a system resource hit should the expect with this level of load?
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Dec 26, 2011
after upgrading an ASA 5520 to 8.4.2-8 VPN clients traffic is not passing destinations other then destinations behind the inside interface. the log shows routing failure for the vpn client on the inside interface.it was working fine with 8.4.1 but the traffic is originated from the outside interface. confirm the the interface for VPN clients changed from outside to the inside interface.
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Dec 18, 2012
it is possible to create a Windows Active Directory group of users which I can use to permit access through the ASA (5520) firewall? I only can find vpn authentication with Radius but nog specific information about granting AD groups internet access via the ASA.
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Feb 21, 2012
it is possible to create a Windows Active Directory group of users which I can use to permit access through the ASA (5520) firewall? I only can find vpn authentication with Radius but nog specific information about granting AD groups internet access via the ASA.
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Jun 24, 2012
I have made the following change to my ASA 5520 using ASDM to try and force VPN clients to use a self assigned certificate from the ASA. I made the following changes Remove Access VPN > Certificate Management > Identity Certificates > Add Certificate.Then I made the following change.. Remote Access VPN > Network (Client) Access > IPSec(IKEv1) Connection Profiles > Connection Profile > Edit > IKE Peer Authentication > Pre Shared key and pointed the identity certificate to the one I created in the step above.Having made this change I am still able to VPN without a certificate configured in authentication settings.I was expecting that the VPN would attempt to issue the self assigned cert to client machine?
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Feb 15, 2011
Options a user may reside in Austin, TX and I want the user to utilize the local proxy (i.e. texasproxy:8080). We currently only require the user to enter the RSA passcode and username to authentication (RSA/AD username are identical). Is there a way to have the user authenticate via RSA and have the user's AD group membership (TX) assign the user the specific IE proxy settings? We are utilizing an ASA 5520 on 8.2, but we are willing to upgrade to newer IOS or even consider anyconnect to resolve this issue.
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May 28, 2012
Currently we are having a 2 ISP for Internet. Need to achieve redundancy for IPSEC VPN using the domain.
Requirement :Will configure a domain and assign two public IP address from 2 service providers. Will set the priority for the public ip address and do the manual change during the ISP failure.We will provide the domain name to the clients to setup the IPSEC VPN.So incase of failure by one ISP, we will change the priority in the domain to point to the availble address.So that we can reduce the downtime and no need of configuring new IPSEC VPN tunnels.
Question :Whether we can achieve this in Cisco ASA 5520.Or do we have an alternate solution to overceome this solution.
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Sep 8, 2011
When I try to add CAS to CAM a cannot choose a OOB Virtual Gateway or OOB Real-IP Gateway, because these operation modes are absent in Type list.What can be reason it?
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Apr 4, 2011
Here is the situation: A CISCO871 router is configured to establish an IP SEC tunnel with a CISCO ASA5520. The configuration is OK about that. I wish to configure the same CISCO871 in order to establish a LAN-to-LAN IP sec Tunnel with another CISCO871 at the same time in order to reach private network. So, I have followed the Cisco procedure Document ID: 71462 "LAN-to-LAN IP sec Tunnel Between Two Routers Configuration Example"; it works, I can reach the peer private network BUT ONLY when the IP SEC tunnel with ASA is not established.
It seems to be a routing problem...I don't find how to configure to make both tunnels up and functional at the same time.
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Mar 2, 2013
I have two ASA 5520 units, both running version 8.3(2) code. Among many other uses, they have an IPSec tunnel between them to link office 1 and office 3 together. Office 2 does exist, and is connected to a different port on the ASA in office 3; there is no IPSec involved with office 3.
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Jun 26, 2011
I have set up a remote access ipsec vpn on an asa 5520. I can connect, and ping internal ip addresses, however I cannot ping back out to the internet, and dns resolution does not work.
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Jun 23, 2011
I am trying to set up remote access vpn on an asa 5520 running 8.4.1. I have the ipsec group, policies, and ip pool set up. When I try and connect with the cisco vpn client I see the following in the logs. Deny icmp src outside:214.67.39.42 dst outside:24.252.51.73 (type 3, code 3) by access-group "acl_inbound". Do I need to put in some firewall rules to allow this traffice so that the VPN can connect?
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Nov 13, 2011
We have multiple vpn tunnels coming to our cisco asa 5520 , the problem is that when we create another tunnel with the same network as another network on the firewall , it does not know how to route the traffic to which interface or sub interface.
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Mar 27, 2013
We have set of PC's who will be connecting either RA IPsec or SSL VPN to another location. On our site, our perimeter device is an ASA 5520 8.2(3). The interfaces on this ASA doesn't have Access Lists applied, so from what I understand, there is a default policy applied globally (class-default). Now my question is: If we set up vpn clients on our pc, are the ports used by the clients to the VPN server allowed by default or do we need to tweak the class-default?
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Mar 20, 2013
How can I see the quantity of traffic that is passing through into an IPSec VPN in a ASA 5520.
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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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Sep 10, 2012
I would like to know if the ASA 5520 BUN K9 supports the data compression on VPN IPsec.
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Mar 7, 2011
Is there any documents that I can use to design an IPSEC remote access solution using 2 data centers . One data center is primary and other one is secondary. The VPN is terminated in ASA 5520. End users using cisco client.
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