Cisco VPN :: Bogus RADIUS Requests From ASA 5510 / VPN Client
Oct 30, 2011
I'm using Cisco VPN client 5.0.7 and Cisco ASA 5510 (7.4 and 8.4.2) VPN RAS solution. Clients are authenticated using certificates and AAA RADIUS (ACS 3.3) and AD.Each time, when client connects, ASA issues 2 RADIUS requests, first - correct one which is successfully authenticated by ACS and immediately - second which always fails. I couldn't find any information related to this strange behaivor. "Double authentication" feature (most likeable to its name) is accessible only to Anyconnect clients which we don't use. When I'm authenicated using group password, there is only one RADIUS request.What is the source of such behavior?The negative impact is that my logs are filled with spurious failed auth attempts, and users are incrementig failed attemps counter in AD.
Debug from ASA:
----First request----
RDS 10/24/2011 16:16:01 D 0232 14884 Request from host 172.16.8.1:1645 code=1, id=22, length=145 on port 1025
RDS 10/24/2011 16:16:01 I 2519 14884 [001] User-Name value: user1
RDS 10/24/2011 16:16:01 I 2519 14884 [002] User-Password value: B2 A9 D0 2D 15 5F B8 BB DB 1E 3A 38 F5 24 72 B5
RDS 10/24/2011 16:16:01 I 2538 14884 [005] NAS-Port value: -1072693248
RDS 10/24/2011 16:16:01 I 2538 14884 [006] Service-Type value: 2
[code]....
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Mar 18, 2013
I'm working on a project where a wi-fi client is tracked and located using RADIUS authentication requests. The problem I'm running into is that the WLC (5508) sends an RADIUS authentication request to my freeradiusd, which is ok so far, but if the client roams to another accesspoint (3602AG, 1131AG, 1252AG), the WLC does not send a further RADIUS auth. request - and the client is allowed to connect to the next ap.Is there an option like RADIUS-cache which I can disable, so that the WLC sends everytime an authentication request when a client tries to connect to an ap or roams from one ap to another one?
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Jan 4, 2012
client is unable to establish a connection to the backend servers via the vip on port 389 ,636 configured that servers are listening on these ports .even the probe is successful on port 389 but not getting any response back from the servers. [code]
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Jul 17, 2012
how many clients simultaneously associate with Cisco AP 1252G.. right now when I try to connect more thn 25 rest unable to access the AP. Clients (smart phones plus laptops) are using 802.11b/g standard.
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Jun 5, 2013
Please find attached a simple BYOD/ISE document I uploaded to kick start my new Wireless setup. Its all configured on my ISE sever and Controller as per doc.My setup:
-3600 AP's
-Internal 5508 Controller
-DMZ 5508 Controller (acts as a DHCP server for wireless clients)
Controllers have established connectivity (mobility acnhors), as a client I can connect fine to my new SSID get a DHCP IP address back from DMZ WLC and at the moment can connect out to the Internet fine (using no WLAN Security as a test). So this part is working.I have now followed the document configured ISE, enabled AAA on the Internal WLC only and used the AAA override setting on WLAN as in the attached document.I connect to SSID expecting to be redirected to my ISE Guest Portal, nothing happens other than connecting to Internet WebPages.My question is, if I have followed this document correctly why is the Internal WLC not redirecting client requests to ISE, is this because my mobility anchors need to be re-configured, perhaps the AAA/ISE config needs to be applied to my DMZ WLC not internal WLC?
I would prefer the Internal WLC to redirect the login to ISE, doesn't make sense to traverse through the DMZ Firewall onto DMZ WLC back into the Internal Network again to the ISE to authenticate.Or am I missing something additionally to this document to make sure clients are directed to the ISE Guest portal login.
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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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Jul 23, 2012
My 2821 router has an arp table with the wrong ip to Mac mappings. The impact is that I can reach any host in the 10.1.1.1 subnet. I can reach hosts in the 192.168.35.0 just fine. [code] It is as if the 192.168.35.1 device is answering all arp requests as a proxy arp or something. Clear arp-cache nor clear ip arp on my 2821 have any affect.
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Nov 11, 2012
I have been given a new project at work, to configure a 881W for wireless capebilities. how to get it to work using local database for the users to authenticate against, but our goal is to authenticate against a radius server that we have in place for existing Juniper AP's.
I have looked at some documentation out there and I cant seem to find what Im looking for. What I need to find out is an example of how to setup a radius server so that the wireless user can authenticate against. I have found some docs on google but those go over radius server setups for logons to the router etc.
here is what I got so far
Building configuration...
Current configuration : 2005 bytes!version 12.4no service padservice timestamps debug datetime msecservice timestamps log datetime msecservice password-encryption!hostname 881W_AP!logging rate-limit console 9enable secret 5
[Code].....
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Mar 13, 2012
I have this scenario, AS5510 ver 8.4(3), VPN Client 5.0.07, RADIUS authentication with IAS on Windows 2003 Server.The issue is that, establishing the connection with the VPN Client, if the user credentials are correct every things works fine, but if we introduce a wrong password I don't receive an error message or a again the authentication form.Nothing happens the VPN Client keep trying to "contact security gateway", after about 5 minutes it stops without any message.Debugging the authentication process in the ASA I see that if the password is incorrect the radius authentication response is "reject". I have also tried with a different version of VPN Client but nothing change.Using AnyConnect client every things works fine.
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Dec 11, 2011
I'm using an ASA version 8.4.2 and a Radius Server.
Is-it possible to configure ASA for sending the name of the connection profile to the Radius Server ?
By default, the radius server doesn't receive this information.
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Feb 6, 2012
I was wondering if i should use the same RADIUS VSA attribute on ACS v5.1 to authenticate AAA clients as those i was using on my old ACS v3.3 server.
Example : under ACS v3.3 i was using RADIUS (Cisco Aironet) attribute to authenticate AP & WLC, should i do the same under ACS v5.1 ?
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Jan 9, 2013
i am trying to connect clients to my AP1231 which is running C1200 Software (C1200-K9W7-M), Version 12.3(8)JED. Client authentication is against RADIUS server. [code]
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Apr 19, 2009
I am doing the initial configuration on our ASA 5510 to use our Radius server just as our 3005 VPN Concentrator did. I can do the test connection inside the ASA with no problems, and when I authenticate using the Anyconnect client, it appears to authenticate fine, but then dumps the connection with an error stating there is not enough memory in he ASA to allow this connection, the error message is as follows:
Error Message %ASA-4-722004: Group group User user-name IP IP_address Error responding
to SVC connect request.
Explanation There is not enough memory to perform the action.
Recommended Action Purchase more memory, upgrade the device, or reduce the load on the device.
Can this really be the case with no connections active, a single user attempting to authenticate through Radius and an out-of-the-box ASA 5510?
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May 17, 2011
I have a 5510 authenticating successfully with a RADIUS server. I'm using it for VPN authentication and it works great. I would also like to do this for administrator access to the ASA. When I turn it on though, any authentication for VPN access is also granted administrative access to the ASA. Obviously, I need to limit that to a select few users.
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Jan 17, 2012
currently I'm evaluating an ACS 5.2.I need to authenticate the VPN-Users against LDAP, but have no direct connection from the ASA to the LDAP-Server. So the ASA should connect to the ACS to ask the LDAP-Identity-Store, OK.
My first Problem is: the ACS doesn't respond to the RADIUS-Requests of the ASA! ASA use's Port 1812, the Secret is ok, the ASA is as a Network Device in the ACS configured and I've created an internal Test-User on the ACS.the Firewall-Log shows the established connection (so I think, there is a Hand shake!? ), but the ASA says in Radius-Test: "EROR:Authentication-Server not responding".
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Jan 13, 2012
I've setup my ASA 5510 to use AAA to my Windows Server 2008 NAP. After many hours of troubleshooting I got my setup to work. The only thing I'm not satsified with at the moment is, that RADIUS is using PAP for communicating between ASA5510 and W2K8/NAP.I've tried ticking the box "Microsoft CHAPv2 Capable" box under Users/AAA => AAA Server Groups => Edit AAA Server.From EventViewer on W2K8/NAP I get Event ID 6278 and 6272., see attached filehow I change from the PAP to the CHAP protocol?
PS: ASA 5510 running ASA version 8.2(4) and ASDM version 6.3(5)
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May 16, 2013
I'm on an ASA 5510 running 8.2(5)41. I have clientless WebVPN configured to authenticate against an RSA RADIUS server, which has users assigned to RADIUS Class attribute 25 to match the group-lock values assigned to each ASA group-policy. This of course is to ensure users can only access the login page's drop-down VPN profiles they are assigned to by the RADIUS server. I have two other ASA 5510s (same code level) using the same RADIUS server with group-lock enabled but for IPSec remote access VPN's, and the group-lock feature works fine.
WebVPN, however, is authenticating any user to any VPN profile without regard to the RADIUS Class attribute 25 they are assigned. If I configure the VPN profiles to authenticate locally and assign group-lock to individual ASA user accounts, group-lock works. As soon as I point it back to the RADIUS server, group-lock does nothing. From the 'debug aaa' below for user 'corpvpnstp', you can see the RADIUS server sends back the attribute 25 values of "ou=stp.Client;" and "ou=stp.ClientDRC;" for this user. The ASA profile this user has attempted to connect to is "EMS-Admin", which should get denied by the ASA. Instead, the ASA successfully authenticates the user.
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Sep 11, 2012
We are starting to deploy SSL VPN in our company and we recently purchased two ASA 5510 firewalls. I have already completed the initial configuration but I do have some inquiry on how to have it configured properly.
1. Employees and clients will access the URL
2. They will select the appropriate group on where they should login.
3. Enter credentials, etc.
4. Username/Password authentication is via RADIUS. The usernames were all created in Cisco ACS 5.3.
My challenge is, we have several clients and all their usernames were created in ACS5.3. Meaning if the configuration is just being differentiated by group settings, clientA can select the profile of clientB and still get authenticated. If that happens, they will be able to access the resources of each other. Also in the future, we will be deploying 2-Factor authentication for some of our clients.
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Aug 26, 2007
I tried to authenticate and authorized Nokia/checkpoint Nortel/AD3 and Nortel 5510 platform using an 4.1 for windows ACS. the ACCESS-REQUEST is well processed bi the radius server wich send ACCESS-ACCEPT to the AAA Client (ie NORTEL or NOKIA), but i'have got privilege access denied on the Client side. RADIUS IETF Dictionnary is used for every device. all others Cisco Devices authenticate and are well authorized.
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Nov 22, 2011
How would I go about configuring RADIUS based AAA for remote access VPN users? I have an OSX RADIUS server and an ASA 5510
(I want to keep console and SSH using LOCAL, so I keep this: "aaa authentication ssh console LOCAL", right?)What does the rest of the config look like to get RADIUS based AAA for remote access VPN users?
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Feb 3, 2007
We have several ASA 5510 firewalls which are being used as VPN gateways.RSA SecurID is the authentication mechanism using native SDI connectivity. No ACS server is being used.Is it possible to assign user Group and other attributes (such as ACL), using the SecurID RADIUS server? I know this is what the Cisco ACS is for, but is it possible using the RSA RADIUS server itself?
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Jan 26, 2011
i have a 5510 with a working VPN but discovered that anyone connecting from a public IP can connect to VPN but can't go anywhere.so if i have say a linksys wifi on my cable modem and a private IP i can connect no problem. but if i'm on like a verizon data card which gives me a public IP i can connect to VPN but receive the below errors in my asa logs and can not reach anything on the network.What do i need added to allow remote ends without a nat device to also work?
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Jan 1, 2012
Since last week we are having problems with remote users working with VPN client on Windows XP.The connection is stablished but no data traffic occurs.
As we didn't do any change in vpn remote settings I did a test from Linux machine running VPNC client and it works well.It sounds so weird because it happens only on Windows client platform.We have CISCO ASA 5510 and PIX 515 running 8.0(4).
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Jun 28, 2012
I am attempting to configure Radius authentication accross a site-to-site VPN for my ASA 5510-01 for remote access.
ASA5510-1 currently has a live site to site to ASA5510-2.
ASA 5510-1 - 10.192.0.253
ASA 5510-2 - 172.16.102.1
DC - 172.16.102.10
ASA5510-01 can ping the DC and vica versa but is unable to authticate when i perform a test. ASA5510-01 can authenticate to a DC on it;s own LAN but not on the remote LAN that DC sits on.
I have double checked the 'Server Secret Key' and ports as well as various users which all work locallly. ASA5510-02 authenticates to DC with no problems.
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Feb 24, 2012
I have configured VPN client on my ASA 5510,
I am trying now to telnet my call manager on port 5060 and on port 2000.
When i am connected localy i am able to telnet both ports, but when i am trying to connect through cisco VPN client i am able to telnet the port 2000 and not able to telnet 5060. Both ports are on the same call manager.
When using windows VPN i am able to telnet both ports.
if i removed inspect SIP from: policy-map global_policy class inspection_default
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Nov 15, 2011
I have a VPN client running on a laptop connected a DSL circuit. The VPN client is configured correctly for an external address on another firewall, this external firewall passes through ISAKMP / IPSEC to an ASA where it terminates. The client authenticates and gets an address from the client pool (VPNCLIENTS – 10.2.16.x / 24) and the tunnel completes with no problems. From the internal ASA I can ping any internal network behind the 10.0.3.240 interface (INSIDE) and I have a route on the inside network to get to the 10.2.16/0 clients to point to this address (10.0.3.240). All good so far.
Now the problems begin. I cant ping anything from the VPN clients (10.2.16.0) network to anywhere, I cant ping any interface on the ASA or any internal network. I also cant ping the client from the ASA and therefore not from the internal network either. This configuration is bare bones configuration so I don’t even have the NAT exception rules added. Network diagram attached too.
interface Ethernet0/0
nameif outside
security-level 0
[Code]......
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Aug 9, 2011
I am having an ASA 5510 and have configured Clientless SSL VPN in it. Now I need to allow my SSL VPN user to access on a particular application(like mspaint.exe for example).When the user login to the SSL VPN, he should see only the particular aplication or must be able to access on the particular application.
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Oct 30, 2011
I woudl like to ask all of you that i have ASA 5510 and i want to do VPN client authetication with LDAP, after verify username and password with AD and it use policy with ACS?
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Mar 13, 2013
I've found that my clients can NOT access to my ASA 5510 with their Cisco VPN Client Ver 5.0 through IPsec over UDP.By comparing my new running config with the old one I found some strang following configuration: [code]
We have 3 diffrent IT expert who have access to our router and I think this configuration is cause of our VPN access problem.Is it really because of that or something else.Any way I want to know how can I get rid of these configuration?
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Sep 25, 2012
I have a Cisco 2821 and ASA 5510 as a VPN Router in my network.Our remote users are using Cisco VPN Client 5.0.07 and I need to monitor them on a server and keep their Connection Info to generate some reports for my manager.
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May 27, 2013
I have an ASA 5510 with the configuration below. I have configure the ASA as remote access vpn server with cisco vpn client, my problem now is I can connect but I can't ping.
Config
ciscoasa# sh run
: Saved
[Code].....
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Mar 28, 2013
I've got random connection issue when I try to connect to a VPN gateway through an ASA 5510 (IPSEC client ->ASA 5510->VPN Gateway).
When the tunnel is coming up, those two lines appears in the captured traffic on the internal interface :
<private internal IP>.500 > <destination IP>.500: udp 541
<public external IP>.500 > <destination IP>.500: udp 541
When it's not coming up, the port nuimber for the public IP is not 500
(private internal IP).500 > (destination IP).500: udp 541
(public external IP).442 > (destination IP).500: udp 541
I don't understand why sometimes the port for the public external IP is 500 and sometimes not.
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Mar 30, 2011
I have some remote locations that connect to my ASA 5510 cluster (Aktive/Passive) using the Cisco VPN Client, from which the connection gets disconnected at random intervals (could be 5 minutes, but sometimes after 15 minutes). However, some other remote locations do not have this problem. All locations have the same VPN client configuration (distrubited by pcf file).
I already disabled isakmp keepalive on the ASA but this did not work. If I read it correctly, the Cisco vpn client logging shows that the ASA initiates the ending of the connection.
Code...
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