Cisco AAA/Identity/Nac :: Wireless Clients Fail SSL / TLS Handshake And Reject ACS 5.2

Aug 29, 2011

I have a problem where wireless clients at a remote site cannot successfully authenticate through their WLC to my ACS 5.2 (Linux on VM). I have three sites where this authentication is functioning properly; at my fourth site the wireless clients fail with a PEAP error: "12321 PEAP failed SSL/TLS handshake because the client rejected the ACS local-certificate". My wireless clients are Win7 using WPA2-Enterprise security type with AES encryption. The authentication method is set to Microsoft PEAP (EAP-MSCHAP v2) and the 'Validate server certificate' is not checked. My wireless access rules on ACS 5.2 are working well at three sites. My ACS 5.2 has a self-signed certificate that doesn't expire until August 2012. A laptop that can successfully authenticate at other sites cannot authenticate at the fourth site.
 
Phase one of the PEAP process is where the client authenticates the server certificate and the TLS tunnel is created so that in phase two user authentication credentials are sent through the TLS tunnel using EAP. My clients do not seem to be able to create the TLS tunnel because they reject the ACS local certificate; thus, user credentials are never passed and authentication fails. I have renewed the ACS local certificate and rebooted the ACS server but the problem persists. My WLAN on the WLC has its security policy set to [WPA + WPA2][Auth(802.1X)]. WPA uses TKIP and WPA2 uses AES; Auth Key Mgmt is set to 802.1X. The remote site where authentication fails is a different domain; the other three sites are the same domain.
 
I can see the failed authentication attempts in my ACS "Monitoring and Reports | Reports | Catalog | AAA Protocol | RADIUS Authentication" report. They all fail with the same PEAP error: 12321 PEAP failed SSL/TLS handshake because the client rejected the ACS local-certificate. The ACS local certificate works fine at three sites--just not at the fourth. Is my problem the certificate or is it an 802.1X client problem?

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Cisco AAA/Identity/Nac :: 5508 / ISE / BYOD / Windows Clients Reject ISE Local-certificate

Mar 26, 2013

We are deploying BYOD with Cisco ISE 1.1.2 and WLC (5508) using 802.1x authentication.Windows clients cannot connect to 802.1x SSID with the following error on ISE:Authentication failed : 12321 PEAP failed SSL/TLS handshake because the client rejected the ISE local-certificate
 
The client doesn't have preconfigured wifi profile or root certificate installed.The concept of BYOD suppose that you can connect your device without any installed certificates and preconfigured wifi-profiles.
 
The problem is that Windows 7 supplicant does not send TLS alert in pop up window, when connecting to 802.1x SSID.If this alert is seen, than you can accept it and proceed the connection. After that you will be asked to install ROOT-cert, get your own cert and etc.So, the question is: how to make the windows supplicant to show the pop-up window with TLS alert?

p.s. the attached file shows the example of pop up TLS-alert window

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Cisco AAA/Identity/Nac :: Wireless ISE - 12508 EAP-TLS Handshake Failed

Mar 21, 2013

I'm in the middle of my very first wireless ISE deployment and I'm hitting issues with EAP-TLS based authentication.  In short, all EAP-TLS authentication is failing with the following error.  Below that is the relevant excerpt from the logs:
 
Authentication failed : 12508 EAP-TLS handshake failed
 
OpenSSLErrorMessage=SSL alert: code=0x233=563 ; source=local ; type=fatal ; message="X509 decrypt error -  certificate signature failure", OpenSSLErrorStack=   597863312:error:0D0C50A1:asn1 encoding routines:ASN1_item_verify:unknown

[Code].....

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Cisco AAA/Identity/Nac :: WLC To ACS 4400 V5 To AD - 12309 PEAP Handshake Failed

Feb 25, 2010

I have a Cisco WLC talking to a ACS 4400 version 5.1 which in turn talks to Active Directory.Ive been trying to get 802.1x for wireless clients going, I have a cert on the ACS from verisign on the box but when users try to sign in they get 12309 PEAP handshake failed in the ACS RADIUS log.The cert was exported and placed directly on the testing laptop and at one point it all worked.  I stepped away from it for 2 weeks to get a new internal CA built on a windows box, now coming back to it with the intent of issuing new certs to the ACS from the internal CA and thought I would check it to make sure all was good, but its not.Google doesn’t return happy results for “12309 PEAP handshake failed”, I opened a TAC case on it and they took my cert to their lab.  Haven’t heard back.

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Cisco VPN :: All Remote Wireless IPSec Remote Clients Fail Connecting To ASA 5500

Sep 12, 2012

We have two ASA 5500 series Firewalls running 8.4(1).  One in New York, another in Atlanta.They are configured identically for simple IPSecV1 remote access for clients.  Authentication is performed by an Radius server local to each site.
 
There are multiple IPSec Site-to-Site tunnels on these ASA's as well but those are not affected by the issues we're having.First, let me start with the famous last words, NOTHING WAS CHANGED.
 
All of a sudden, we were getting reports of remote users to the Atlanta ASA timing out when trying to bring up the tunnel.  They would get prompted for their ID/Password, then nothing until it times out.Sames users going to the NY ASA are fine.After extensive troubleshooting, here is what I've discovered. Remote clients will authenticate fine to the Atlanta Firewall ONLY IF THEY ARE USING A WIRED CONNECTION.
 
If they are using the wireless adapter for their client machine, they will get stuck trying to login to Atlanta.These same clients will get into the New York ASA with no problems using wired or wireless connections.Windows 7 clients use the Shrewsoft VPN client and Mac clients use the Cisco VPN client.  They BOTH BEHAVE the same way and fail to connect to the Atlanta ASA if they use their wireless adapter to initiate the connection.
 
Using myself as an example.
 
1. On my home Win 7 laptop using wireless, I can connect to the NY ASA with no issues. 
 
2. The same creditials USED to work for Atlanta as well but have now stopped working.  I get stuck until it times out.
 
3. I run a wire from my laptop to the FiOS router, then try again using the same credentials to Atlanta and I get RIGHT IN.
 
This makes absolutely no sense to me.  Why would the far end of the cloud care if I have a wired or wireless network adapter?  I should just be an IP address right?  Again, this is beyond my scope of knowledge.We've rebuilt and moved the Radius server to another host in Atlanta in our attempts to troubleshoot to no avail.  We've also rebooted the Atlanta Firewall and nothing changed.
 
We've tried all sorts of remote client combinations.  Wireless Internet access points from different carriers (Clear, Verizon, Sprint) all exhibit the same behavior.  Once I plug the laptops into a wired connection, BAM, they work connecting to Atlanta.  The New York ASA is fine for wired and wireless connections.  Same with some other remote office locations that we have.
 
Below I've detailed the syslog sequence on the Atlanta ASA for both a working wired remote connection and a failed wireless connection.  At first we thought the AAA/Radius server was rejecting us but is shows the same reject message for the working connection.  Again, both MAC and Windows clients show the same sequence.Where the connection fails is the "IKE Phase 1" process.

-------------------------------------------------------------------------------------------------------------------------
WORKING CONNECTION
-------------------------------------------------------------------------------------------------------------------------
 %ASA-6-713172: Automatic NAT Detection Status: Remote end is|is not behind a NAT device This end is|is not behind a NAT device
NAT-Traversal auto-detected NAT.
 %ASA-6-113004: AAA user aaa_type Successful: server = server_IP_address, User = user
 %ASA-6-113005: AAA user authentication Rejected: reason = string: server = server_IP_address, User = user

[code]...

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Cisco AAA/Identity/Nac :: Fail To Backup ACS 5.1?

Nov 27, 2011

I tried to backup ACS 5.1 but i found error messages as below
 
acs backup25Nov11 repository 25Nov11Repository
% Repository not found
% Error: Invalid repository name 25Nov11Respository

Please use a configured repository.

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Cisco AAA/Identity/Nac :: ACS 5.3 - Backups Fail To TFTP

Jul 14, 2012

I'm configuring ACS for the first time and the config is complete and working, except backups of the view database. I've created a TFTP repositiory and if I perform a manual backup or wait for a scheduled one to occur it fails. I do get a .tar.gpg file in the TFTP server (but can not restore from it as it's not listed in "Restore" as a backup).
 
It works fine if I create and use a local disk repository. I get a .tar.gpg but also a catalog.xml and repolock.cfg file (which I don't in TFTP). Looking at the logs on the TFTP server I can see it tries repeatedly to read the catalog.xml file but fails:
 
Read request for file <DB/catalog.xml>. Mode netascii [15/07 16:05:52.167]
File <DBcatalog.xml> : error 2 in system call CreateFile The system cannot find the file specified. [15/07 16:05:52.167]
 
That seems correct, the file doesn't exist. However it never seems to try and create it.

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Cisco AAA/Identity/Nac :: 3560 - ISE First Authorization Success And Then Fail With MAB

Jan 6, 2013

Using ISE 1.1.1 and Switch 3650 12.2(55)SE6. I have a client (computer) that should be authenticated with MAB and then the switch port should be asigned a DACL and VLAN 90. I do get "Authorization succeeded"  but directly after it fails and I can't figure out why. ISE only shows the successful authentication under "Live Authentications".
 
As you can se from the log below 802.1x fails, as it should, and then MAB succeed, asigns the VLAN and then fails:
 
0002SWC002(config)#int fa0/13
0002SWC002(config-if)#shut
0002SWC002(config-if)#
[Code]....

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Cisco AAA/Identity/Nac :: N7K Primary Tacacs Server Fail / Won't Switch Over To Another

Jan 23, 2012

Have you ever found the problem that if I set two tacacs server in my N7K and the primary tacacs server fail, won't switch over to another tacacs server.

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Cisco AAA/Identity/Nac :: Http Radius Authentication Fail In 12.2.58 And 15.0.1 For 2960

Aug 18, 2011

Find here the extraction of the configuration and the debug sysout. The radius servers works fine with all the other accesss like ssh, telnet...
 
Just the http access fail. This configuration work fine with the version 12.2.55 installed before.
  
Aaa new-model
aaa authentication login default group radius local
aaa authentication login physique local

[Code].....

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Cisco AAA / Identity / Nac :: Webauth Url Redirection Fail With Firewall Between Host And Switch

Feb 27, 2013

Web auth redirect URL gets dropped if stateful firewall is between webauth host and switch management interface.  Aaron at Cisco live london kinda hinted about maybe Cisco working on this ?  We can't disable stateful inspection. Is there any other solutions or workarounds ?
 
"Although this approach introduces additional hops in the return path from the switch to the host, it produces negligible load on the default router and intervening infrastructure since only the WebAuth traffic from the switch to the host follows this path. In campus designs that do not use SVIs on the data VLAN,6 a default route is typically already configured. In this case, no additional configuration is required to support WebAuth.

However, problems may arise in the case in which traffic to the default router is bridged through a stateful firewall. The original SYN packet in the TCP handshake is consumed by the access switch, so the first packet that the firewall sees is the SYN-ACK packet from the access switch. Stateful firewalls typically drop SYN-ACK packets if they have not seen the original SYN packet.In this case, you will need to turn off stateful inspection for ports 80 and 443 on the firewall."

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Cisco AAA/Identity/Nac :: C2960 Doit1x Monitor Mode / Client Fail Authentication

Mar 21, 2013

I have a setup with a were I configured monitor mode on a switch with ISE as RADIUS server. This is for testing before a bigger deployment at a customer site.Im using ISE 1.1.3, C2960 and IOS 15.0(2) and a laptop with Windows 7 Enterprise SP1. The correct configuration with EAP-TLS and machin cert is working like it should but it is when I remove this and make the laptop fail that I get wierd results with monitor mode. I cant get DNS to work in dot1x monitor mode if the client fail authentication.
 
When the client fail dot1x and MAB it gets a IP with DHCP. I can ping but DNS/browsing is not working. If I put the AuthC back and the client authenticates DNS is working, or if I turn of dot1x on the client then DNS work as it should. [code]

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Cisco AAA/Identity/Nac :: C3560E / Authentication Event Fail Action Authorize VLan

Jul 15, 2012

when the supplicant is missing vlan500 is open for port and everything is ok, but when supplicant has wrong configuration something happend and port is always authenticating(every 30s, vlan500 is not assign to this port with bad configuration supplicant) and logs show something like that
 
Jul 10 10:20:12.362: %AUTHMGR-5-START: Starting 'dot1x' for client (001e.3718.7297) on Interface Ga0/1 AuditSessionID 0A0EFF5B000004A3545161E4 Jul 10 10:20:44.365: %AUTHMGR-5-START: Starting 'mab' for client (001e.3718.7297) on Interface Ga0/1 AuditSessionID 0A0EFF5B000004A45451DF11 Jul 10 10:20:44.399: %MAB-5-FAIL: Authentication failed for client (001e.3718.7297) on Interface Ga0/1AuditSessionID 0A0EFF5B000004A45451DF11 Jul 10 10:20:44.399: %AUTHMGR-7-RESULT: Authentication result 'no-response' from 'mab' for client (001e.3718.7297) on Interface Ga0/1 AuditSessionID 0A0EFF5B000004A45451DF11 Jul 10 10:20:44.399: %AUTHMGR-7-FAILOVER: Failing over from 'mab' for client (001e.3718.7297) on Interface Ga0/1 AuditSessionID 0A0EFF5B000004A45451DF11 Jul 10 10:20:44.399: %AUTHMGR-5-START: Starting 'dot1x' for client (001e.3718.7297) on Interface Ga0/1 AuditSessionID 0A0EFF5B000004A45451DF11
  
version - Cisco IOS Software, C3560E Software (C3560E-UNIVERSALK9-M), Version 15.0(1)SE2
  
port config:

interface GigabitEthernet0/1
switchport access vlan 104
switchport mode access
switchport voice vlan 200
authentication event fail action authorize vlan 500

[code]....

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Cisco AAA/Identity/Nac :: Accounting Setup On WLC 440x / 5508 ACS Takes It As Authentication Request And Fail

Dec 8, 2011

accounting in ACS 5.3. When I setup accounting on WLC 440x / 5508 ACS takes them as an authentication request and fail.
 
Here are some logs what I see in acsview:
 
Dec 9,11 6:05:11.783 PM
Radius authentication failed for USER: navrka2  MAC: a.b.c.d  AUTHTYPE: Radius authentication failed
 ACS Session ID:
dc2aaa1v/112555963/420
Audit Session ID:
0a9a01d7000001fd4ee23a3d
Tunnel Details:

[code]...

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Linksys Wireless Router :: E3000 Do Not Handshake With Border Router

Feb 19, 2011

I recently purchases new E3000. I setup the E3000 with static IP from border router rather DCHP which seemed to default to the same IP address and DNS. The laptops tied to the E3000 have their own IP's that are different from the IP of the border router. E3000 is configured with no firewall an minimal protection, for now. The reason for minimal protection was to get the handshaking to work between the two routers. The border router is a Verizon product. The old router that I was using is a Netgear that did handshake with the border router. I have the latest firmware for the E3000 namely Firmware version: 1.0.04 build 6. Router will not handshake either with wired or wireless connections. Laptop used to connect to the E3000 is running Windows 7 Ultimate.  In fact all laptops here are using the same OS and connect using wireless. I tried the included software package from the website, which housed a diagnostic that apparently couldn't fix the problem as well. I don't have clue as to the reason for E3000 not to handshake with the border router.

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Cisco :: WLC 5508 Failed To Complete DTLS Handshake With Peer

Feb 21, 2011

WLC 5508 running 7.0.98.0
 
Site was running fine until the WLC had a hardware failure.
 
A new WLC was shipped out, was running 6.0.99 then manually upgraded to 7.0.98. Clients cannot authenticatewith recurrent logs messages like this.
 
*dot1xMsgTask: Feb 23 17:05:03.648: %DOT1X-3-MAX_EAP_RETRIES: 1x_auth_pae.c:2914 Max EAP identity request retries (3) exceeded for client 00:21:5c:<snip>*spamApTask0: Feb 23 17:05:01.926: %DTLS-3-HANDSHAKE_FAILURE: openssl_dtls.c:629 Failed to complete DTLS handshake with peer 192.168.214.91
 
I have tried changing the key on the radius server to no avail.

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Cisco AAA/Identity/Nac :: ACS 5.2 Timed Out For AAA Clients

Aug 16, 2011

I have 2 ACS 5.2 (VMWARE) in my network configured as primary and secondary. When my AAA clients are configured for Primary ACS authentication works fine.But the clients configured with secondary  fails authenticating.My replication status  of the secondary box is showing UPDATED.

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Cisco AAA/Identity/Nac :: ACS 5.3 Mac Filtering For WLC Clients?

Jul 30, 2012

Any upto date reference for setting up the ACS v 5.3 for mac filtering via built in radius with wireless lan controllers?
 
all I seem to find is this old document - which uses the user database.
 
the ACS 5.3 has host store, which seems like the logical place to setup mac address information
 
[URL]

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Cisco AAA/Identity/Nac :: 11213 NAC Clients Via ISE Authenticating

Apr 17, 2012

So if I do a static ip address it works fine, but if I turn off static, the machine authenticates fine, but is not assigned to the access vlan, and it does not get an ip address.now when I use static I notice in the ISE live authentication logs, 11213 No response received from Network Access Device, for the switch even though its configured correctly.

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Cisco AAA/Identity/Nac :: ACS 5.2 Supports IPv6 Clients?

Jun 28, 2011

We are using the Cisco ACS 5.2 for AAA to manage our network devices.  We plan to migrate all our edge's devices to IPv6 soon.  Can or when the Cisco ACS 5 support IPv6 address?

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Cisco AAA/Identity/Nac :: ACS 4.2 - Delete Multiple Clients?

Jun 28, 2011

I've inherited some ACS appliances from another part of my organization.  I need to keep most of the settings but want to remove all the AAA clients; and preferably not one-by-one.  I don't see a way in the documentation and web searches have proven fruitless.

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Cisco AAA/Identity/Nac :: Sync / Copy AAA Clients Between Two ACS5.2

May 17, 2011

we are moving network devices (200+) authentication/authorization/accounting to new ACS5.2, is there any easy way to copy/sync all those AAA clients configuration to another ACS5.2 server? I don't need other configuration to be synced/copied to another ACS5.2 server

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Cisco WAN :: 2960 Should One Server Fail Other Will Act As Fail Over

Feb 22, 2012

We have two Cisco 2960 TT-L switches. I'd like to reduce single points of failure and have dual servers for most tasks. For example, two firewall servers and two web servers. Should one server fail the other will act as a failover.I'd like to extend the redundancy to the switches, and am thinking of connecting one web server to one switch, and one to the other. In the event a switch failed a set of servers would still run, and be able to talk to each other.I'd like to run two VLANs, one for the LAN, and one of the WAN, and connect the two VLANs on each of the switches with the associated VLAN on the other switch.

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Cisco AAA/Identity/Nac :: 802.1x Auth-Fail VLAN And Guest-VLan Not Available

Oct 12, 2011

I'm wanting to setup a Virtual Office scenario. Everything is working fine except for 802.1x...I can get the 881 to authenticate things connected to it, but I don't have the options of guest-vlan or auth-fail vlan.Idea is if the users takes the router home and someone, either accidentally or on pupose, connects an unauthorized Laptop, they stay off the Corp network but can get to the internet still.I found this link on Cisco's site: [URL]That link shows them configuring a guest vlan right on the fa0-3 ports of an 881W. I dont have that option on mine. I can only configure 802.1x on the vlan interface. I have 802.1x working, for things that connect to vlan1, but I would like to have a "fallback" setup.
 
EZVPN_Remote(config-if)#int fa1
EZVPN_Remote(config-if)#dot
EZVPN_Remote(config-if)#dot1?
dot1q 
EZVPN_Remote(config-if)#dot1

[code]....

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AAA/Identity/Nac :: SSL Certificate Installation On Acs Appliance 1120 For PEAP Clients

Apr 18, 2011

I need this SSL certficate installation on my acs appliance 1120 for PEAP clients.I have exported SSL server certficate from my old acs 3.3 server which is under acscertstore folder issued by CA vendor . I need to reuse this same SSL certificate on my acs appliance .ACS appliance certficate setup requires following two certificate to be installed for PEAP clients authentication

1) Server Certificate

2) CA certificate
 
Server Certificate : For server certifcate , I have my old certificate which is exported from my old acs 3.3 server , when i tried to download my server certficate via ftp server on my acs appliance , its looking for private key & private key file .Private key & file is generated intially on CSR request when this server certificate is requested to CA vendor for my old acs 3.3 . I dont know the private key password . If i need private key & file , then i need to generate new CSR from my acs appliance and i need to submit this CSR output to my CA vendor to generate new SSL server certificate .which is something like new server certificate request .CA certficate : For CA certficate , when i open my existing SSL certificate under detials tab in CRL distribution point , i could see below URL . whn i open this URL it giving certificate revocation list . [1]CRL Distribution Point.

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Cisco AAA/Identity/Nac :: Use 802.1x To Authenticate Clients On Network With Dynamic VLAN Assignment From RADIUS?

Apr 11, 2013

I'm trying to use 802.1x to authenticate clients on my network with dynamic VLAN assignment from RADIUS. We have IP-Phones(powered by PoE) that only supports EAP-MD5, and we would rather use MAB(it also uses LLDP-MED for some settings) to authenticate the phones using the MAC-range from the phones vendor. The following scenario works perfect:Connect the phone and let it boot up(takes a while) and authenticate with MAB.Connect a computer in the phones data-port and let it authenticate with 802.1x(or fail and reach guest-vlan) However, the following scenario doesn't work:The computer is already connected to the phoneThe phone is then connected to the switch What happends now is that the computer is authenticated using 802.1x before the phone boots up and get's authenticated with MAB. When the phone is ready, it's authenticated with MAB and everything works. However, after a short period(let's say a minute), using `debug authentication all`, we see a "NEW LL MAC: phones mac" message(which is weird since the mac has already been MAB-authenticated), and then we are unable to contact the phone using ping. When I check `show mac address-table` it has now moved the mac from `Port Gi 0/12` to `Port Drop`. However, if I check `show mab interface Gi 0/12` or `show authentication sessions` it lists the phones-mac as `mab auth sucess `.why the first scenario works, and not the second?
 
The switch is a 3560E PoE 24p with IOS 12.2.58SE2. Sample of the switch-config: network-policy profile 1voice vlan 90!interface GigabitEthernet0/12switchport mode accessnetwork-policy 1authentication control-direction inauthentication event fail retry 1 action authorize vlan 60authentication event server dead action authorize vlan 60authentication event no-response action authorize vlan 60authentication event server alive action reinitializeauthentication host-mode multi-domainauthentication order mab dot1xauthentication priority mab dot1xauthentication port-control autoauthentication periodicauthentication violation replacemabdot1x pae authenticatordot1x timeout tx-period 5dot1x max-reauth-req 1spanning-tree portfast!Btw, when we tried authenticating the phones using 802.1x too (EAP-MD5), there are NO problems in any of the scenarios. However, we want to use MAB instead of 802.1x to avoid the requirement of configuring the phones with a username and password. The RADIUS response was the same when using 802.1x as it is with MAB for the phones (including device-traffic-class=voice AV-pair).

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Cisco AAA/Identity/Nac :: Maximum Number Of AAA Clients Supported By Single ACS5.3 Instance

Aug 7, 2012

what is the maximum number of AAA clients supported by a single ACS5.3 instance?

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Cisco AAA/Identity/Nac :: 1121 - Upgraded ACS / Clients Are Unable To Authenticate Older Appliance?

Apr 14, 2013

We have had an active ACS unit for many years now, and we've added a second one, both are 1121 Appliances.  The newer one came with 5.4, so we upgraded the older one to 5.4.
 
We setup replication between the two, with the newer one primary and the older one secondary.  Problem is, windows based clients are unable to authenticate to the older ACS appliance.  The only problem we can see is that it indicates that adclient is not running, under Monitoring & Troubleshooting, ACS Health Instance Summary.
 
So... been trying to figure out how to correct this, yet have been hard pressed to find a knowledgebase article that works.  So far, Cisco hasn't added my smartNet on the new box so I can get some support?

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Routers / Switches :: Dlink DIR 615 Router - Wireless Clients Can't See Ethernet Clients

Feb 1, 2011

I have 4 desktops cat5 to Dlink DIR 615 router. All work fine. Any wireless clients, laptop or netbooks, see the desktop computers for a while then disconnect somehow. All machines can see the Internet through the router at all times. The desktops disappear from the laptop/netbooks but the wireless machines can be seen from the desktop computers but clicking on them gets 'Access Denied' message after a wait.3 desktops = XP, 1 98SE. All laptop/netbooks = XP

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Cisco VPN :: ASA 5505 VPN Clients Can't Ping Router Or Other Clients On Network

Jun 18, 2012

I have a ASA5505 and it has a vpn set up. The VPN user connects using the Cisco VPN client. They can connect fine (the get an ip address from the ASA), but they can't ping the asa or any clients on the network. Here is the running config:
 
Result of the command: "show running-config"
 
: Saved
:
ASA Version 7.2(4)
!
hostname ASA
domain-name default.domain.invalid
 
[code].....

what I need to add to get the vpn client to be able to ping the router and clients?

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Cisco VPN :: 5520 / 5510 - Can VPN Clients Communicate With Other Dynamic Clients

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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Netgear WNDR4500 - Clients Not Showing Up In Clients List

Jul 6, 2012

I have a Netgear WNDR4500 running the stock firmware, acting as a router for my home. I also have 2 routers that are flashed with DD-WRT (Linksys WRT54G and Asus WL-520GU) running as client bridges. The Netgear is 192.168.1.1 and the other 2 client bridges are 192.168.1.2 and 192.168.10.3. The Netgear router is performing DHCP giving addresses from 192.168.10.100 to 192.168.10.254. I have numerous machines connected to the Netgear, wirelessly and wired, and numerous machines wired to each client bridge. All machines have IP addresses that are 192.168.10.100, 192.168.10.101, 192.168.10.102, etc... Everything is working fine, but I have one question: When I access the Netgear router, it shows the client bridges as clients, machines that are wired and wireless to the Netgear router are listed as clients, but the client list does not show any clients that are connected to the client bridges. I assumed that since the router is performing DHCP that all clients would show up.

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Cisco Wireless :: 5508 / WLC Proxy ARP Fail

Jun 9, 2013

I have a lab network setup at my house with similar equipment to our office that I use for testing different features and functionality.  Since I have had this installed (~ 2 years) I've had an intermittent but recurring problem with connectivity to various wireless devices that I have never been able to fully resolve.I have a 5508 Wireless controller with a handful of 3502i APs spread throughout my house.  The controller is connected to a 3560X switch.  And I have an ASA 5510 firewall as my Firewall/Internet Gateway. When I work from home I most often work from a desktop computer in my office and have a Windows RDP session to a laptop located in another room in my house on one of my monitors as a working space (I know this is weird but there is a good reason).  This laptop is connected via WiFi at all times.Occasionally, I will lose connectivity to this laptop (or not be able to connect back to my desktop from it) and have to start an extended ping from the laptop to the desktop to re-establish connectivity.  A while ago I performed some deeper analysis on what was happening and what I found is that when the connectivity breaks the problem is that the desktop is unable to resolve the MAC address of the laptop.  It sends out ARP requests but never receives any reply back.
 
Why would the controller stop replying to ARP requests for the IP address of the laptop?If I log into the controller while this is happening it shows the laptop as a connected client, and has its IP address and MAC address listed fine in the clients section.  In order to avoid getting up every time I need to reconnect, I normally hop to a system I control across one of my VPN tunnels via RDP, then connect BACK to the laptop and start the ping to re-establish connectivity back to my main desktop machine.  This works because the firewalls ARP cache hasn't cleared yet.  And then everything works fine again... unless I manually clear my ARP cache.  Sometimes clearing the ARP cache will result in the exact same problem again and I will lose connection.  Other times it seems to repopulate almost immediately and the connection doesn't drop.
 
A wireshark debug from the desktop reveals that ARP requests simply go out with no reply, confirming what is happening.As a note, I have set both the User Idle Timeout and the ARP timeout to 24 hours to try but this has not had any effect.This problem seems to go away and then come back.  In fact, I havent been experiencing this issue for probably a couple months recently and then it just started again in the last few days which is why I am back to posting here.  No changes to the network were made in the meantime that could account for this change in behavior.  I am currently running version 7.2.111.3 but this behavior has persisted through at least four software upgrades so I don't think it's an issue with a specific version but I don't really know.I occasionally epxerience connectivity issues in my house to other devices as well that I use less often like a printer, network camera, apple tv so I now feel like these issues are likely all related.

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