RADIUS server for authentication
Hello
I want to configure the radius server, so whenever someone tries to connect to a cisco (Telnet) switch, I want the radius to authenicate them server. Is this possible?
Yes it is possible as long as you configure your switches to authenticate to the Radius server. To achieve this, you must use a feature called AAA. This feature is compatible with the protocols such as Radius, GANYMEDE +, to name a few. The following link will give you an idea on how to set it up on switches IOS based specifically on the 3550:
Make sure that apply you the authentication list to the vty lines to ensure that telnet access is authenticated with the radius server. FOT based CatOS switches than the following link will be useful:
http://www.Cisco.com/en/us/Partner/Tech/tk583/TK642/technologies_tech_note09186a0080094ea4.shtml
Tags: Cisco Security
Similar Questions
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several hosts aaa server for authentication vpn
ASA5510 - 7.2 (1)
Using the following configuration, I try to have several radius servers configured for authentication backup in case of failure of the primary vpn. This seems to work ok. But once the main server upward when the asa will begin to use it again. The release of "aaa-Server 172.25.4.20 host" said
Server status: FAILURE, server disabled at 08:04:25.
How do reactivate you it?
RADIUS protocol AAA-server adauth
adauth AAA-server 172.25.4.20
key *.
authentication port 1812
accounting-port 1813
adauth AAA-server 172.25.4.40
key *.
authentication port 1812
accounting-port 1813
tunnel-group group general attributes
address pool pool
authentication-server-group adauth
by default-group-policy
You can add the option in the Group aaa-server:
"reactivation in timed mode.
This causes a dead server is added to the pool after 30 seconds.
The following link has some good info on the options available. I suggest looking for the doc for the "reactivation".
http://www.Cisco.com/univercd/CC/TD/doc/product/multisec/asa_sw/v_7_2/cmd_ref/crt_711.PDF
-Eric
Be sure to note all the useful messages.
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Hi team
Hope you do well. !!!
currently I am doing a project which consists in CISCO ASA-5545-X, RADIUS (domain controller) server for authentication. Here, I need to configure Anyconnect VPN and host checker in cisco asa.
1 users will connect: user advanced browser on SSL VPN pop past username and password.
2. (cisco ASA) authentication: VPN sends credentials to the RADIUS server.
3 RADIUS server: authentication: receipt and SSL VPN (ASA) group.
4 connectivity creation: If employee: PC so NAW verified compliance, no PC check Assign user to the appropriate role and give IP.
This is my requirement, so someone please guide me how to set up step by step.
1. how to set up the Radius Server?
2. how to configure CISCO ASA?
Thanks in advance.
Hey Chick,
Please consult the following page of installation as well as ASA Radius server. The ASA end there is frankly nothing much difference by doing this.
http://www.4salesbyself.com/1configuring-RADIUS-authentication-for-webvp...
Hope this helps
Knockaert
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Hello!!
We are working on a mapping between a promoter Cisco ISE group and a user group in Active Directory, but the customer wants the mapping through a RADIUS SERVER, to avoid the ISE by querying directly activate Directory.
I know it is possible to use a RADIUS SERVER as source of external identity for ISE... but, is possible to use this RADIUS SERVER for this sponsor group manages?
Thank you and best regards!
Hi Rodrigo,
The answer is no. There is no way to integrate the portal Sponsor config with a RADIUS server. Your DB for authentication Portal Sponsor options;
AD
LDAP
User internal ISE DBSent by Cisco Support technique iPhone App
-
Connecting two servers vCenter for a server for SSO in basic mode
Can you connect two vCenter servers to a single server for authentication, if authentication single server configured in the basic Mode?
For example, I have two vCenter servers in one site. I have install Single Sign on server on a separate virtual computer. Two vCenter servers use only one SSO server for authentication. Does it work?
-
Autonomous AP521 can be configured for authentication WPA/TKIP with no radius server?
The AP521 can be configured for authentication WPA/TKIP with no radius server?
the datasheet, wpa with tkip and wpa2 with aes are supported.
you want to use (no RADIUS) wpa - psk with tkip. WPA2-psk aes and tkip not use.
-
Hello
A 3850 catalyst switch has VLAN 20 (10.18.4.32/29) defined on it, which has a 10.18.4.38 gateway:
D01-01-BWY #show ip short int vlan 20
Interface IP-Address OK? Method State Protocol
Vlan20 10.18.4.38 YES manual up upA server of ISE (SNS3415) is connected to a port configured on VLAN 20, with IP address of 10.18.4.33.
01-BWY-D01 has to a management interface of 10.18.4.17.
I created this switch as a device network in ISE and activated the RADIUS config and then configured the switch with the following commands:
RADIUS attribute 6 sur-pour-login-auth server
RADIUS attribute 6 support-multiple server
Server RADIUS attribute 8 include-in-access-req
RADIUS attribute 25-application access server include
dead-criteria 5 tent 3 times RADIUS server
RADIUS-server host 10.18.4.33 auth-port 1812 acct-port 1813 borders 7 1521030916792F077C236436125657
RADIUS-server host 10.18.4.35 auth-port 1812 acct-port 1813 borders 7 02350C5E19550B02185E580D044653radius of the IP source-interface GigabitEthernet1/0/1
The problem:
When I test the functionality of RADIUS using the following command, it fails. HOWEVER, the customer (switch) IP listed in the error log in the front door of the VLAN 20 (!):
test the aaa group RADIUS server 10.18.4.33 auth-port 1812 Capita123 user radius acct-port 1813! new-code
10.18.4.38 is the gateway IP address of the VLAN that hosts the servers of the ISE, I don't understand why its listed in error as IP device logs!
ource Timestamp 2016-06-22 16:38:02.826 Receipt of timestamp 2016-06-22 16:38:02.841 Policy Server GLS-ISE-01 Event 5413, accounting RADIUS-Request dropped Reason for failure 11007 could locate no device network or Client AAA Resolution Check if the device network or AAA client is configured in: Administration > network resources > network devices First cause Could not find the network device or the AAA Client while accessing NAS by IP during authentication. Type of service Box NAS IPv4 address 10.18.4.38 Other attributes
ConfigVersionId 118 Port of the device 1646 DestinationPort 1813 Protocol RADIUS ACCT-status-Type Update-intermediate ACCT-Delay-Time 15 ACCT-Session-Id 00000000 ACCT-Authentic RADIUS AcsSessionID GLS-ISE-01/255868885/32 IP address of the device 10.18.4.38 If I reconfigure the switch to the ISE - peripheral network and give it the IP address of 10.18.4.38 (the ip of the gateway), my radius authentication tests suddenly becomes successful.
can someone clarify the situation what is happening here?
I need to be able to define multiple switches by their unique IP addresses.
Thanks for your time
m
Hello
The only time I saw that it was due to use a deprecated command: radius server host. There was a bug on the IOS XR platform as well.
Could you please reconfigure your order of RADIUS by using the new command: radius server? And test again?
The doc of Cisco for the new order:
http://www.Cisco.com/c/en/us/products/collateral/iOS-NX-OS-software/iDEN...
Thank you
PS: Please do not forget to rate and score as good response if this solves your problem
-
Setup
Cisco Catalyst 2960-S running 15.0.2 - SE8
Under Centos freeRadius 6.4 RADIUS server
Client (supplicant) running Windows 7
When Windows client is connected to the port (port 12 in my setup) with authentication of 802. 1 x active switch, show of Wireshark that catalyst sends ask EAP and the client responds with EAP response. But it made not the request to the Radius server. The RADIUS test utility 'aaa RADIUS testuser password new-code test group' works.
Here is my config running. Any advice would be greatly appreciated.
#show running mySwitch-
mySwitch #show running-config
Building configuration...Current configuration: 2094 bytes
!
version 12.2
no service button
horodateurs service debug datetime msec
Log service timestamps datetime msec
no password encryption service
!
hostname myswitch
!
boot-start-marker
boot-end-marker
!
activate the password secret 5 $1$ Z1z6$ kqvVYRQdVRZ0h8aDTV5DR0 enable password!
!
!
AAA new-model
!
!
AAA dot1x group group radius aaa accounting dot1x default start-stop radius authentication group!
!
!
AAA - the id of the joint session
1 supply ws-c2960s-24ts-l switch
!
!
!
!
!
control-dot1x system-auth
pvst spanning-tree mode
spanning tree extend id-system
!
!
!
!
internal allocation policy of VLAN no ascendant interface FastEthernet0 no stop ip address!
GigabitEthernet1/0/1 interface
!
interface GigabitEthernet1/0/2
!
interface GigabitEthernet1/0/3
!
interface GigabitEthernet1/0/4
!
interface GigabitEthernet1/0/5
!
interface GigabitEthernet1/0/6
!
interface GigabitEthernet1/0/7
!
interface GigabitEthernet1/0/8
!
interface GigabitEthernet1/0/9
!
interface GigabitEthernet1/0/10
!
interface GigabitEthernet1/0/11
!
interface GigabitEthernet1/0/12
switchport mode access
Auto control of the port of authentication
dot1x EAP authenticator
!
interface GigabitEthernet1/0/13
!
interface GigabitEthernet1/0/14
!
interface GigabitEthernet1/0/15
!
interface GigabitEthernet1/0/16
!
interface GigabitEthernet1/0/17
!
interface GigabitEthernet1/0/18
!
interface GigabitEthernet1/0/19
!
interface GigabitEthernet1/0/20
!
interface GigabitEthernet1/0/21
!
interface GigabitEthernet1/0/22
!
interface GigabitEthernet1/0/23
!
interface GigabitEthernet1/0/24
!
interface GigabitEthernet1/0/25
!
interface GigabitEthernet1/0/26
!
interface GigabitEthernet1/0/27
!
interface GigabitEthernet1/0/28
!
interface Vlan1
IP 10.1.2.12 255.255.255.0
!
IP http server
IP http secure server
activate the IP sla response alerts
recording of debug trap
10.1.2.1 host connection tcp port 514 RADIUS-server host 10.1.2.1 transport auth-port 1812 acct-port 1646 timeout 3 retransmit testing123 key 3.
Line con 0
line vty 0 4
password password
line vty 5 15
password password
!
endinterface GigabitEthernet1/0/16
!
interface GigabitEthernet1/0/17
!
interface GigabitEthernet1/0/18
!
interface GigabitEthernet1/0/19
!
interface GigabitEthernet1/0/20Have you run wireshark on the server because the request to switch? If so you make sure that there is a response from the server? For Windows network POLICY Server (I've never tried Centos), you must ensure that the request is related to a policy which then authenticates, or denies access. Usually, it is a matter of such attributes and the seller.
Regarding the configuration, it seems a bit out of the AAA. Try to remove the:
line "aaa dot1x group service radius authentication" and this by using instead:
"aaa dot1x default radius authentication group". After the dot1x word you are supposed to provide a list of the authentication or the default Word if you do not want to use a list.
-
How 2 Configure ACS 4.2 to delegate authentication to the radius server
Hello
We need run the following scenario:
Cisco VPN client (or any connect, Cisco SSL VPN client)---> Cisco ASA 5520---> Cisco ACS 4.2---> CAT Authentication Server
The CAT authentication server is a Radius server. It can receive Radius authentication requests and respond. It is used for strong authentication TFA WBS similar to RSA OTP tokens.
The question is: how we set up the 4.2 ACS to delegate authentication request to another Radius server.
Thnx
Add the RSA server as an external database, configure the drop user profile or a group to authenticate on the new external database rather than ACS DB Local (or Windows DB).
Easy as pie!
Please rate if this is useful.
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How to account for the Radius Server cisco vpn client
Hello
I would like to realize vpn cisco customers
My config is:
AAA authentication login default local radius group
RADIUS AAA authentication login aaa_radius local group
RADIUS group AAA authorization exec default authenticated if
AAA authorization vpn LAN
failure to exec AAA accounting
action-type market / stop
RADIUS group
!
AAA accounting network aaa_radius
action-type market / stop
RADIUS groupRADIUS-server host x.x.x.x auth-port 1812 acct-port 1813 key xxxxx
No package of accounitng is sent to the server radius, only the packages autthetication
RADIUS server is freeradius
Thank you
Pet
Hello!
The sequence of commands you add to your configuration:
1. in the case of former card crypto
crypto-NAME of the customer accounting card card list aaa_radius
2. in the case of isakmp profiles
Profile of crypto isakmp PROFILE NAME
accounting aaa_radius
When the NAME of the map and the PROFILE NAME real names for you profile crypto map or isakmp respectively.
I hope this helps.
Best regards.
-
ISE - authentication radius AAA for n access
Hello
I have configured the switches to use the ISE as a Radius Server to authenticate with, on the ISE, I configured an authentication strategy
for the 'DNA' using the devices 'Wired' group that points to the source of identity AD to authenticate.
All testing switches access connection we found 2 results:
1.A domain user can connect to the switch as expected.
2. each domain user that exists in the source of advertising identity can connect, this is an undesirable result.
So I will try to find a way to restrict access to the ENAD to only a specific group belonging to the announcement, for example the group/OU
of the IT_department only.
I did not, would appreciate any ideas on how to achieve this.
Switching configurations:
=================
AAA new-model
!
AAA authentication login default local radius group
!
ISE authentication policy
==================
!
Policy name: DNA authentication
Condition: ": a device Type equal to: all Types of devices #Wired.
Authorized Protocol: default network access
Use the identity source: AD1
!
No problem is how to set up policies, don't forget to evaluate any useful comments when you are finished testing.
Thank you
Tarik admani
-
With the help of several radius for authentication servers
Hello.
I want to install a PPTP to my router and I wonder if it is possible to use windows multiple IAS servers on a Cisco router?
The scenario is that I have more than one business using this PPTP connection and they all have their own advertising on their own VLAN, I would like the router to forward the authentication request containing the username and password for all IAS of Windows servers that I specify or go through them one at a time until it receives an awnser.
Is this possible?
Best regards Tommy Svensson
Tommy,
This is not possible because if a radius server receives a user name, it will be simple rejection the user and send this response to the Cisco router. The radius Protocol is not throw or send any message to warn the router that the user is not present in its database.
I know that with ACS that if a username has been sent with a special domain can proxy communication on the acs server and the Cisco router based on the user name.
I hope this helps.
Tarik
-
switch 3750 EAPoL transmission RADIUS server
I have a running version of the 3750 switch stack 12.2 (53) SE2 IPBASEK9-M. I have dot1x configured on the switch and a Windows 7 PC, connected with 802. 1 x configured on the interface. I see the EAPoL start message from the PC, but I do not see the packets from the switch to the RADIUS server RADIUS. I have a config simple dot1x just to try to make it work before adding additional features such as comments - vlan...
Config and debug of attached file.
I don't know if the configuration ip dhcp snooping and arp of inspection is cause a problem with that or not. I see the EAPoL packet received on the switch, as shown in the attachment of debugging, but I never see the RADIUS packet. I've defined both trust on the interface, but always the same result. I can't turn it off because there is a switch of production with a test interface.
Any ideas?
Thank you
Mark
I had the same problem and solved it is enough to configure the switch as authenticator instead of "supplicant". "Supplicant" means customer, "authenticator" means in fact the switch acts as an authenticator to pass through, it will forward the requests to the auth server, for example, host of RADIUS.
-
Cisco ISE: External RADIUS server
Hello
I send RADIUS of NHP NHP, another. I have already defined "External RADIUS servers".
So, how can I use this external RADIUS server to process my application?
Looking at the user guide, but did not find information on this parameter (for the rule after rule not simple)
Cela if anyone use this, please suggest me.
Thank you
Mathias
Please specify which version you are using. There were improvements to the functionality of the proxy in ISE 1.1.1
This can be used as follows:
-Define "External RADIUS server"
-Set the "Sequence of RADIUS server. This allows you to define a sequence of proxies that will send queries to until you get an answer
-In the authentication policy when the rules instead of the allowed protocols can select a "RADIUS server Sequence.
-
NPS Windows Help for authentication of aaa for Cisco router - is it safe?
I am very confused about how all this works and was hoping someone could help me.
I followed a bunch of tutorials online for authentication RADIUS of installation on a Cisco router and he did to a NPS Windows Server. Now I can ssh into the router my AD account.
Now that I got it to work, I go to the settings to make sure everything is secure.
On my router, the config is pretty simple:
aaa new-modelaaa group server radius WINDOWS_NPSserver-private 123.123.123.123 auth-port 1812 acct-port 1813 key mykeyaaa authentication login default local group WINDOWS_NPS ip domain-name MyDomcrypto key generate rsa (under vty and console)# login authentication default
- I created a new RADIUS client for the router.
- Created a secret shared and specified Cisco as the name of the seller.
- Created a new strategy of network with my desired conditions.
- And now the frame of the configuration of the network policy that worries me:
So initially I thought my AD credentials were being sent over the wire in plain text, but I did a capture and saw this:
How is my password being encrypted and how strong is the encryption? Another thing is how can I configure aaa authentication with mschapv2? The documentation I saw for mschapv2 uses the "ppp authentication ms-chap-v2" command, but I'm not using ppp I'm using aaa with a radius server.
Hello
RADIUS encrypts the password, but sends the username in clear. GANYMEDE encrypts the user name and password.
You can find the encryption used by RADIUS in the RFC scheme:
https://Tools.ietf.org/html/rfc2865#page-27
MS-Chap-V2 is used for the authentication of users such as the remote access and vpn, not management switch
Thank you
John
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