ACS 4.2 and dACL on Catalyst switches

Hello
I have ACS 4.2.0.124p14, 3750-48PSS switch with 12.50.SE3 and test PC running Windows XP. PC authenticated by MAB and switch correctly download dACL from ACS. But if dACL contains more than ~10 lines traffic not passed thru port (dACL downloaded correctly). Does anybody know why traffic is blocked or how I can debug this or any restrictions in dACL construction.
Regards,
Stanislav

This is what I understand; The port is getting authorized fine, DACL are being sent by the radius server and are getting applied to the concern port but its not taking effect. This is an on going issue..we have seen many cases with this.
As you said uf there are more then 10 lines then only its not working...In that case There is an internal bug on this: CSCsf14450: DACL not consistently downloaded to switch during MAB testing.
HTH
JK
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Dear all
I have ACS 5.1 and Catalyst switch 3560 with version 12.2(53)SE. I configure a dacl on the ACS and I use it on authorization profile.
This authrization profile is used on access policy.
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Dear Tiago
I applied the command "radius-server vsa send". Now I can see the dacl is applied but I can't see it on the switch and even the authentication is succueeded ont the ACS logs but it give me unauthoized on the switchport. You can see the logs( started with the username acstest and the access-list is applied but it doesn't work and you can see theat it goes for mab after eap timed out). I hope you can help on this issue.
Dec 13,10 10:29:00.513 AM
00-23-AE-7A-58-A6
00-23-AE-7A-58-A6
Default Network Access
Lookup
Dot1x-3560-Switch
1.2.3.4
FastEthernet0/5
TESTACS
22056 Subject not found in the applicable identity store(s).
Dec 13,10 10:28:29.186 AM
#ACSACL#-IP-Guest-4cfcc14d
Dot1x-3560-Switch
1.2.3.4
TESTACS
Dec 13,10 10:28:28.726 AM
acstest
00-23-AE-7A-58-A6
Default Network Access
PEAP (EAP-MSCHAPv2)
Dot1x-3560-Switch
1.2.3.4
FastEthernet0/5
TESTACS
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I don't understand correlation between ACL and dACL. If dACL is downloaded to the Catalyst switch what is the status of the ACL

Understanding ISE and dACL.
I don't understand correlation between ACL and dACL.
If dACL is downloaded to the Catalyst switch what is the status of the ACL attached to physical port. Is dACL appended to the existing ACL? When I typed ‘sh ip access-list int fa0/1’ I can see only dACL for access domain and dACL for voice domain appended to the previous dACL and no ACL lines.
Regards,
Vice

Hi,
Downloadable ACLs (dACL) are applied from your RADIUS server based on authentication and authorization policies. It overrides any standard interface ACL.
Standard interface ACLs are in place to limit traffic on the port before 802.1x or MAB authentication.
When an authenticated session terminates on the interface the standard ACL will be re-applied until the next authentication.

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VTP Operating Mode : Server
VTP Domain Name :
VTP Pruning Mode : Disabled
VTP V2 Mode : Disabled
VTP Traps Generation : Disabled
*omit
3550#
3550#sh run
Building configuration...
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Best Regards,
Masanobu Hiyoshi

Hi mhiyoshi,
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VTP Version : 2
Configuration Revision : 0
Maximum VLANs supported locally : 1005
Number of existing VLANs : 27
VTP Operating Mode : Transparent
VTP Domain Name :
VTP Pruning Mode : Disabled
VTP V2 Mode : Disabled
VTP Traps Generation : Disabled
*omit
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*omit
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Configuration Revision : 0
Maximum VLANs supported locally : 1005
Number of existing VLANs : 27
VTP Operating Mode : Server
VTP Domain Name :
VTP Pruning Mode : Disabled
VTP V2 Mode : Disabled
VTP Traps Generation : Disabled
*omit
3550#
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2. In order to access Cat switches over SSH and HTTPS, do we require Cryptographic versions of the Cat IOS?
3. What does "k9" stands for in IOS names? e.g. "3560-ipservicesk9"
Thanks

Hi
Answer to Q1 :
Best plase to compare the Catos and IOS is
www.cisco.com/go/fn
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Answer to Q2 :
Yes you need Cryptographic version
Answer to Q3 :
K9 stand for Cryptographic version if you have ipservicesk9 you can do SSH in the feature navigator if you search the ios without K9 you will find this :
IP SERVICES W/O Crypto
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Catalyst switch hangs when connecting via console port

Hi,
I've just started work for a company - they have no network documentation or knowledge of their current set-up whatsoever.
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Note: I subsequently connected to a spare WS-C3524-XL switch using the same laptop and same console cable without any problems.

Hi,
thanks for the response.
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ACS Group mapping and restrictions

hi,
I would appreciate to receive some configuration steps on ACS to fulfill the following requirement and hope you can help me.
ACS Groups
Netadmin - need telnet/ssh/vpn/wireless
wireless - only wireless authentication
vpn - only vpn authenticaiton
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thanks in advance.

In ACS user can only belong to one group. But in AD we can have one user a part of multiple group.
In this scenario, it is very important to understand how ACS group mapping works.
Lets say that you have three different groups on AD for NetworkAdmin, RouterAdmin, Wireless. Go to external user database ==Database Group Mappings==Windows NT/2000==select the domain to which you are authenticating==Add mapping.
Select the AD group NetworkAdmin and map it to ciscosecure group 1
select the AD group RouterAdmin and map it to ciscosecure group 2
select the AD group Wireless and map it to ciscosecure group 3
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SCENARIO:
Now if you want a NetworkAdmin user to authenticate to NetworkAdmin devices and not wireless or RouterAdmin devices you would need to apply NARs to group 1 because NetworkAdmin users are connecting to that group. Which you will permit Access on group basis to a particular NetworkAdmin NDG or individual NetworkAdmin NAS device.
NOTE:
If you are applying NARs for Wireless or VPN devices.. you would need to configure both IP based AND CLI/DNIS based together because NARs were originally designed for cisco IOS for
routers and switches.
IMPORTANT: If a user successfully authenticates to AD database once, its username is cached on the ACS database (NOT password) the only way to remove the previously cached
username is to go to usersetup find that user and delete it manually.
ACS will not support the following configuration:
*An active directory user that is a member of 3 AD groups (group A, B and C) *Those 3 groups are mapped within ACS as follows Group1->A,Group2->B and Group3->C.
*The user is in all 3 groups however he will always be authenticated by group 1 because that is the first group he appears in, even if there is a NAR configured assigning specific AAA clients to the group.
However there if your mappings are in below order...
NT Groups ACS groups
A,B,C =============> Group 1
A =============> Group 2
B =============> Group 3
C =============> Group 4.
You can create a DIFFERENT rule for the users in A,B,C by configuring the NARs in group1.
This rule WILL apply for the use ONLY if he is present in ALL three groups (A,B and C).
You can create a rule for users in group A (Group 2)
You can create a rule for users in group B (Group 3)
You can create a rule for users in group C (Group 4)
Regards,
~JG
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ACS 4.2 and dACL on Catalyst switches

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