Cisco Firewall :: Overcoming Identity NAT In 8.3?
Mar 8, 2011
I'm working on a large deployment with multiple ASA interfaces with numerous subnets behind eash interface. The subnets are not contigous. The problem we have had in the past is that in order to traverse ASA interfaces with the NAT untouched, we need to create identity NATs everywhere (over 500 statements on a single firewall). Cisco sales suggested we try this command to ovoid this;nat (any,any) after-auto source static any any description Identity NAT But when it is enabled the ASA doesn't perform NAT on any interface, even outbound (we want to apply a global IP outbound with our global pool). I do a show xlate global 67.10.10.10 and no translations show up. After I disable the above command, no nat (any,any) after-auto source static any any description Identity NAT I see entries in the XLATE table. On the outside device (router at 8.8.8.1) I confirm this by doing a show user to see what IP is telneted through the far end.
how to avoid creating these numerous identity NAT statements with 8.3?Here is an example of 8.2 identity NAT for reference.
static (inside,DMZ1) 10.60.2.0 10.60.2.0 netmask 255.255.255.0static (inside,DMZ2) 10.60.3.0 10.60.3.0 netmask 255.255.255.0static (inside,DMZ3) 10.60.4.0 10.60.4.0 netmask 255.255.255.0
Here is the snippit of my test lab config running 8.3.
(config)# show run: Saved:ASA Version 8.3(2)!names!interface Ethernet0/0nameif outsidesecurity-level 0ip address 172.16.1.80 255.255.255.0!interface Ethernet0/1nameif insidesecurity-level 100ip address 10.10.80.1 255.255.255.0!interface Ethernet0/3shutdownno nameifno security-levelno ip address!interface Management0/0nameif managementsecurity-level 100ip address 192.168.1.1 255.255.255.0management-only!boot system disk0:/asa832-k8.binftp mode passiveclock timezone MST -7clock summer-time PDT recurringdns domain-lookup outsidesame-security-traffic permit inter-interfaceobject network obj_anysubnet 0.0.0.0 0.0.0.0access-list ACL_CUST_OUTSIDE extended permit icmp any anypager lines 24logging enablelogging timestamplogging buffered informationallogging trap notificationslogging asdm informationalmtu outside 1500mtu inside 1500mtu management 1500no failovericmp unreachable rate-limit 1 burst-size 1asdm image disk0:/asdm-641.binno asdm history enablearp timeout 14400!object network obj_anynat (inside,outside) dynamic 67.10.10.10nat (any,any) after-auto source static any any description Identity NATaccess-group ACL_CUST_OUTSIDE in interface outsideroute outside 0.0.0.0 0.0.0.0 172.16.1.1 1route inside 10.0.0.0 255.0.0.0 10.10.80.2 1
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Aug 27, 2012
I have setup an Identity Firewall on a ASA version 5.6 on a DMZ interface.I have installed the ADAgent on a domain member Win2008 and configured as follows: [code]
where ashdew is a domain user and ACL 122(only one line) is applied on the dmz interface and NAT is properly configured.The ADagent has been properly tested and ASA can register to it.The ASA can connect to AD DC controller and query user database.I have placed a laptop ip 172.17.h.x on the DMZ and can ping the DMZ interface.
The laptop cannot authenticate on the domain and the asa does not seem to retrieve the user identity.Do I need to add extra rules in the access-list 122 to permit trafic to DC?Can I check on the AD Agent if it can retrieve the user to ip mapping ?
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Dec 28, 2011
I have a question with regard to setting up the ID firewall on the ASA 5585 in a single forest, multiple domain windows network.Currently I have a semi-operational IDF at the top level but can't find users on the lower other domains, here is the setup:I have 3 domains.
[URL]
Both domains have a two way parent-child trust and I can look for users in AD Users/Computer on both domains. I initially setup the ASA to look at domain1.test.com using an LDAP aaa-server per the IDF instructions, and then proceeded to configure the ad-agent. I installed the adagent on the domain1.test.com domain controller configured the settings on that system and had no problem adding users to the firewall and getting functionality within domain1. I looked to see if I could see domain 2 and domain 3 users and found none. I went ahead and added the domain2 system to the adagent on the DC and the system says that it is up, but when I search for users is not pulling them from domain2. Instead, it shows domain1 users as domain2user1. I also configured another adserver in the ASA to search ldap on domain 2 to no avail.The cisco documentation states the following:•Before you configure even a single domain controller machine using the adacfg dc create command, ensure that the AD Agent machine is first joined to a domain (for example, domain J) that has a trust relationship with each and every domain (for example, domain D[i]) that it will monitor for user authentications (through the domain controller machines that you will be configuring on the AD Agent machine). Single Forest, Multiple Domains—All the domains in a single forest already have an inherent two-way trust relationship with each other. Thus, the AD Agent must first be joined to one of the domains, J, in this forest, with this domain J not necessarily being identical to any of the domains D[i] corresponding to the domain controller machines. Because of the inherent trust relationship between domain J and each of the domains D[i], there is no need to explicitly configure any trust relationships.Reading that it sounds like it should just work. I had everything properly configured before I installed the adagent, but I'm guessing that there is a chance that you can't have the adagent on the top level DC and get to communicate with the lower level domains.
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Jul 26, 2012
We are using the newest release of AD Agent (1.0.0.32.1, built 598). The ASA Firewalls 5520 are having the software release 8.4(3)8 installed.When somebody tries to connect thru the Identity based firewalls from a citrix published desktop environment (PDI) the connection is not possible. Checking the ip-of-user mapping on the firewalls (show user-identity ip-of-user USERNAME) mostly doesn't show the mapping of the USERNAME and the PDI the user is logged in. The user-of-ip mapping of the PDIs IP-address shows mostly other users, which then are used to authenticate the acces thru the firewalls.
What is interesting, that on the AD Agent using "adacfg.exe cache list | find /i "USERNAME"" i can't see the PDIs IP-address neither because it is mapped to another user.Is Citrix Published Desktop environment supported to connect thru Identity based Firewalls? How AD Agent, Domain Controllers and Firewalls are working together? On the firewalls with "show user-identity ad-agent we see, the following:
-Authentication Port: udp/1645
-Accounting Port: udp/1646
-ASA Listening Port: udp/3799
Why Cisco does use 1645 and 1646 and not 1812 and 1813?The Listening Port is used for what purpose? we tried the AD Agent modes full- download and on-demand with the same effect.
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Nov 21, 2011
I have just configured identity firewall on our ASA 5510.I have 3 nodes that authenticates against Active Directory, using the Windows Server 2008 R2 builtin Network Policy Server: A laptop, a stationary PC, and a Android Phone. All 3 nodes are authenticated using the same user/password.
Now, in ASDM -> Monitoring -> Properties -> Identity -> Users, I can see two of the nodes with my user name attached to it, namely the laptop and the stationary PC.But not the Android phone.
Then it dawned on me. To set up the ADAgent properly, you have to apply 2 group policy entries. Unfortunately, those 2 entries are applied to the Computer Configuraton part of the Group Policy.This means that your COMPUTER has to be a member of your domain for USER IDENTITY to work.So my Android phone and other nodes not a member of the AD Machine Store will never be detected by identity rules, and can roam the network free.
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Jun 8, 2011
We will be upgrading from 4.x to 5.x and need to verify if any needed ports will have to be alllowed through the firewalls. Is there a list of required ports somewhere, I have searched but am coming up empty-handed.
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Nov 4, 2011
i have an ASA 5520 with ios 8.4 and asdm 6.4.
my configureation is below
my asa interfaces
inside ip
172.16.0.0/22
[Code].....
so now i want to configure my asa to give access to user based. what configurations should i use to do so.
i have attached the Edit Active Directory Server dialuge box so what should i put there in the box's
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May 2, 2013
I'm porting our configuration from a Pix 515 firewall to an ASA 5512x. What's vexing me right now is with the deprecation of the "static" command, I can't quite figure out the best way to Identity NAT my inside sub nets (multiple) to the DMZ sub net
So on the pix I have my identiy NATs as an example:
static (inside,dmz) <IntSubA> <IntSubA> netmask 255.255.255.0
static (inside,dmz) <IntSubB> <IntSubB> netmask 255.255.255.0
static (inside,dmz) <IntSubC> <IntSubC> netmask 255.255.255.0
Cisco's migration guide seems to do them one object at a time, which I guess is straightforward enough to do:
object network SubA
subnet <IntSubA> 255.255.255.0
[code]...
I'm thinking that there must be an easier way (aka less lines) to implement this for all the sub nets I want to Identity NAT to the DMZ.
1) Can I do this creating objects using a sub net with a net mask of 255.255.0.0 - one object to cover multiple internal sub nets?
2) Can I do this using object groups and trim this down to: (assuming I have to commands right)
Object-group network Inside_Subs
network-object <IntSubA> 255.255.255.0
network-object <intSubB> 255.255.255.0
network-object <intsubC> 255.255.255.0
nat (inside,dmz) source static Inside_Subs Inside_Subs no-proxy-ARP route-enabled. What would be the best way to translate my Identity NATs?
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Jun 10, 2013
I am trying to configure Fortigate firewall for device authentication through TACACS+ using Cisco ACS 5.2.
I was wondering if any one had an experience to worked on this scenario. I am looking for authorization command attibute to grant admin access.
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Aug 5, 2012
how to configure ACS 5.2 for device administration of Checkpoint firewalls and security management servers?
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Jan 5, 2012
ACS 5.1 is failing to authenticate tacacs authentication to the ASA firewall, getting
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Dec 1, 2012
I am struggling in some areas to work out my firewall rules for a distributed deployment. The referenced documentation is not entirely clear in my opinion. In some instances it is easy to work out what ports need to be opened eg Admin node TCP 22,80,443 for management from administrator hosts/ranges. In other instances it difficult to work out eg TCP 1521 Database listener and AQ is this for ISE nodes only or for access devices aswell
My question is whether there is a better document that details these requirements. What rules are meant to be ISE node - ISE node communications and which rules are for access device - ISE, or ISE - access device. One of the rules I am pretty confused about is the PSN CoA ports. SHould the rule be WLC - PSN on 1700 and 3799 or is it the otherway round or unidirectional?
I am pretty sure that the ports are meant to be ISE-ISE in most instances barring the PSN for Radius and CoA.
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Jul 26, 2012
I have an auditor wanting a screenshot of all users that have acces to configure our firewall, I am unfamiliar with 5.1. Is there a way of running such a report on a paticular device?
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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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Jun 19, 2011
this is ASA5520 associate with 8.4(1). very simple scenario , three ports: inside . outside . DMZ my problem is how to use network object NAT to perform Regular Dynamic PAT and Identity NAT.
for example, this is my configuration
**** first i configured Regular Dynamic PAT****
object network myinside
subnet 10.200.11.0 255.255.255.0
nat (inside,outside) dynamic interface
**** then , i met problem when i want to make identity NAT between inside and DMZ****
**** if i add below CLI , the first nat line will be replaced ****
**** SO IF I ADD THIS****
[code]......
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Oct 28, 2012
I'm trying to test such 802.1x wired environment:windows xp sp3 as supplicant windows NPS as radius server 2960 as authenticator latest anyconnect (3.1.01065) + nam and standalone profile editor.I have a question: What is the difference between protected identity pattern and unprotected identity pattern (set in nam profile editor)? As I understand documentation PEAP-MSCHAPv2 is a tunneled method and it uses un- protected identity pattern to protect user's identity during phase 0. But if I use any fake identity here (anonymous, anonymous@[domain], etc) access is rejected (Access-Reject in switch debugs). I have to use exacly the same pattern in unprotected identity pattern as in protected identity pattern ([username] or [username]@[domain]) to gain access, regardless of authenticaton mode (same in machine only, user only authentication).
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May 18, 2011
I have a new Cisco Secure ACS 5.2 on a VM. We want to use it to for administrative access to our Cisco equipment with TACACS+. I am trying to map user permissions to different groups of devices based on active directory group membership, however it is not working.
I am using an LDAP (configured for secure authentication) external identity store. On the directory organization tab, I have confirmed the accuracy of the subject and group search base and the test configuration button shows that it's finding > 100 users and >100 groups.
On the directory groups page I have entered the groups according to the required format. cn=groupname1,ou=groups,dc=abc,dc=com
I have a rule based result selection under group mapping. I have two rules in the format below.
Conditon
LDAP:Externalgroups groupname1
Result
Identitygroup1
I have the default group set to a identity group named other. My problem is, no matter what user attempts to authenticate, the Default rule is applied, and the user is put into the other identity group.This occurs when I log on as a groupname1 user, groupname2 user, or as user that is not a member of either of those groups. LDAP authentication works and the user is able to logon to the device.
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Jul 11, 2011
We are using ACS 5.2 and we are trying to create a Microsoft Active Directory (AD) Identity Store. We have a user to be used in the Active Directory creation General page and we would like to know how the test communication / ACS to AD communication takes place.
Our user is a predefined user in AD and has admin rights, but the password expires every 60 days. Will this affect the communication between AD and ACS 5.2 at everytime the entered user's password expires?
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Jan 24, 2012
I'm currently looking for a solution in order to restrict the modification of the host internal identity store (add or delete MAC host) per group. The default administrator roles does not include "per group restriction". Under the ACS I defined one group per department? My objective it to allow each department to access their ACS MAC database to add or delete MAC addresses as required.
How to restrict internal identity store per group?Do I need to create new roles? and how?I was not able to get an answer from the ACS ADMIN manual.
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Dec 5, 2012
I have a new ACS 5.3 configure and a ASA5550 to authenticate VPN users using a remote LDAP server. Once I try to authenticate the users with the ACS it gives me the error message "22056 Subject not found in the applicable identity store(s)."
I checked out the documentation and have already configure the Identity store sequences to redirect everything to the LDAP server, I also did the Bind test and it says that is ok, but I still have the same problem.
I validated the Access Policies Menu, and tried to create a new Service Selection Rules, but whet I get to the option of modifying the Identity option I get the error: "This System Failure occurred: {0}. Your changes have not been saved.Click OK to return to the list page. " and I'm not able to modify the identity, not in this new option I created, nor in the ones already created in the ACS.
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Oct 6, 2012
I have two ACS v 5.2 (primary and secundary) and some users are in the internal stor and the others are in the AD.The local site topology is like this:
PC - AP - WLC - ACS - AD
Authentication method is PEAP(EAP-MSCHAPv2) and all user have the certificate company installed. The OS in the client users is Windows 7.Users was working fine but some users reports intranet disconnections. I see in the ACS log many "22056 Subject not found in the applicable identity store(s)." and "24415 User authentication against Active Directory failed since user's account is locked out" alarms.I believed it was because user wasn´t in the AD data base, but some times the same user is authenticated successfull and other i see the "22056...." or "24415...." alarms.
I switched the role for ACS primary to works as secundary and we see the same alarms.
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Apr 14, 2011
I have ACS 5.2 running as a VM. I'm AD, then local authentication successfully for device access, but I want to define ACS user groups to restrict login. I don;t see any way to do this. If I use AD groups, they don;t show up as selection options on the policy screens, just the ACS locallyy defined groups.
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Dec 3, 2012
We have a ACS 4.3.2 installed with users authenticating against an Active Directory database. The AD database not only authenticate the users but also assigns the group that is used to select IP address pool.Now the requirements require to use token authentication with SafeNet. This authentication uses the same username but the password is composed of the original password + OTP.The problem is that the SafeNet server doesn't return the group membership.I've read about the Identity Store Sequence in ACS 5.x and I think I could use it in the following sequence:! configure an Authentication Sequence using the SafeNet token server (this works with ACS 4.x)I configure an Attribute Retrieval Sequence against the AD database. This would use the username only, no password and would retrieve the group membership.
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Dec 5, 2011
I'm looking for Cisco ISE v1.1 to use the following licensing feature. url...Endpoint is dynamically profiled by Cisco ISE and assigned dynamically or statically to an endpoint identity group. Cisco ISE authorization rules do not use this endpoint identity group.
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May 11, 2012
I am currently running cisco ACS 5.1.0.44 and use active directory as the main authentication identity store to allow network administrators to have access to network devices in my organization .As per the established security policies in my organization , the ACS has to disable any account after 3 failed login attempts to any network devices .i have gone through all the settings oN the acs but couldn't find where or how it is done .
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Feb 22, 2013
I have installed ACS 5.4 and we are looking to authenticate our Anyconnect users with ACS via Active Directory. I think I have the correct commands in our ASA ( we had ACS 4 and authenticated our anyconnect users ).
I also have configured ACS to use Active Directory and installed the server side cert in ACS. I'm just uncertain how to program ACS to use the security group that I have setup in Active Directory.
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Aug 28, 2012
I have an ACS 5.3 cluster, that is configured to use AD. There are a few wireless devices, and monitoring tools that do not have AD accounts. I would like to configure ACS to first check AD for the user authentication, and if that fails to roll over to the local (Internal Users) identity source where I can define these user accounts.
It seems that when the authentication hits the initial Identity Policy rule, it never moves onto the next one if the first fails.
Attached are screen shots that show how i'm configured for the test, i have a local user defined and I'm trying to log into the firewalls.
- Identity Definition : Screen shot of the main ACS definition for the rule i'm testing that's not working
- Identity Rule 1 : The configuration of rule 1 that if it fails i need it to move onto rule 2.
- Log Output : Screen shot for one of the failed attempts from the ACS View Log server.
Reason I need to configure it this way is:
- Wireless users authenticate to wireless using AD user accounts. Some hand held scanners do not support that and will need to authenticate using the MAC address.
- Authentication to Network devices for managment uses AD accounts. We have some monitoring tools that do not have AD accounts, and will need to be able to log into Network devices to issue some commands (Examples: Cisco Prime LMS and NCS, Infoblox NetMRI).
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Apr 18, 2012
how profiling works exactly ?How intelligent is the profiling engine, meaning: Will it discover that one device has more than one different MACs and will merge the entries in the database ??
Example:This is in fact the same device, there is only one WLC-2500 in the network ....If it can discover that, what needs to be configured on the ISE to do that ?
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Mar 9, 2011
I am try to configure ASA 5510 with 8.3 IOS version.My internal users are 192.168.2.0/24 and i configured dynamic PAT and are all internet .
i want configure identity NAT for remote access VPN.Remote users IP pool is 10.10.10.0 to 10.10.10.10
i know to configure NAT exemption in IOS 7.2 version. But here IOS 8.3 version. configure NAT exemption for 192.168.2.0/24 to my remote pool( 10.10.10.0 to 10.10.10.10).
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Aug 15, 2012
I understand that Cisco Secure ACS 5.3 supports the integration with existing external identity repositories such as Windows Active Directory and LDAP servers. In fact, in my environment, my ACS 5.3 is now integrated with AD and RSA.My question here is can Cisco Secure ACS 5.3 integrate with "multiple" WIndows AD, LDAP, RSA Server etc.? if yes, is there a Cisco document stating this? The keyword here is multipple.
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Sep 25, 2011
I am trying to setup PEAP authentication for wireless users but I got stuck at place where I have single ssid and users are store in different identity stores like some will be using their active directory and some are locally created users on ACS. I created separate service for wireless authentication and under that I am unable to create rule to differentiate them with identity stores. any idea how to achieve this.
I tried creating identity selection based on role but it does not work as for protocol like radius.peap,ms-chap ACS does not look for another identity store once user not find in an identity stores.
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May 19, 2013
After clicking on below path we are not getting option as should be reflected. Below is the snapshots for the issues.
Access Policies > Access Services > Default Device Admin > Identity
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Jan 16, 2012
I configured before ACS v4.2 to authenticate network devices using internal users at first, and if the user is not found use AD list users. But with v5.3 I have some problems doing this, on identity policies I use rule based result selection option, I configured 2 polices for Identity source, one for Internal Users and other policy for AD user, but it only works with the first policy, internal users or AD, but works only for the first policy identity. how to do that, if the user is not found on first policy, continue to the next policy.
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