Tried commands which we use on Routers no luck. The router does this by default. VRF - Virtual Routing and Forwarding VRF (Virtual Routing and Forwarding) is revolutionary foot print in Computer networking history that STATIC ROUTING LAB CONFIGURATION - STATIC ROUTING , DEFAULT ROUTING , GNS3 LAB , STUB AREA NETWORK FOR CCNA NETWORK HSRP and IP SLA Configuration with Additional Features of Boolean Object Tracking - Network Redundancy configuration on Cisco Router BGP and BGP Path Attributes - Typically BGP is an EGP (exterior gateway protocol) category protocol that widely used to NetFlow Configuration - ASA , Router and Switch Netflow configuration on Cisco ASA Firewall and Router using via CLI is Cisco ASA IPsec VPN Troubleshooting Command, In this post, we are providing insight on, The following is sample output from the , local ident (addr/mask/prot/port): (172.26.224.0/255.255.254.0/0/0), remote ident (addr/mask/prot/port): (172.28.239.235/255.255.255.255/0/0), #pkts encaps: 8515, #pkts encrypt: 8515, #pkts digest: 8515, #pkts decaps: 8145, #pkts decrypt: 8145, #pkts verify: 8145, Hardware: ASA5525, 8192 MB RAM, CPU Lynnfield 2394 MHz, 1 CPU (4 cores), Click to share on Twitter (Opens in new window), Click to share on Facebook (Opens in new window), Cisco ASA IPsec VPN Troubleshooting Command VPN Up time, Crypto,Ipsec, vpn-sessiondb, Crypto map and AM_ACTIVE, BGP Black Hole Theory | BGP Black Hole Lab || Router Configuration, Cloud connecting | Cisco Cloud Services Router (CSR) 1000v (MS-Azure & Amazon AWS), LEARN EASY STEPS TO BUILD AND CONFIGURE VPN TUNNEL BETWEEN OPENSWAN (LINUX) TO CISCO ASA (VER 9.1), Digital SSL Certificate Authority (CA) Top 10 CA List, HTTP vs HTTPS Protocol Internet Web Protocols, Basic Routing Concepts And Protocols Explained, Security Penetration Testing Network Security Evaluation Programme, LEARN STEP TO INTEGRATE GNS3 INTEGRATION WITH CISCO ASA VERSION 8.4 FOR CISCO SECURITY LAB, Dual-Stack Lite (DS-Lite) IPv6 Transition Technology CGNAT, AFTR, B4 and Softwire, Small Remote Branch Office Network Solutions IPsec VPN , Openswan , 4G LTE VPN Router and Meraki Cloud , VRF Technology Virtual Routing and Forwarding Network Concept, LEARN STATIC ROUTING LAB CONFIGURATION STATIC ROUTING , DEFAULT ROUTING , GNS3 LAB , STUB AREA NETWORK FOR CCNA NETWORK BEGINNER, LEARN HSRP AND IP SLA CONFIGURATION WITH ADDITIONAL FEATURES OF BOOLEAN OBJECT TRACKING NETWORK REDUNDANCY CONFIGURATION ON CISCO ROUTER. In order to automatically verify whether the IPSec LAN-to-LAN configuration between the ASA and IOS is valid, you can use the IPSec LAN-to-LAN Checker tool. private subnet behind the strongSwan, expressed as network/netmask. Configure IKE. All rights reserved. We are mentioning the steps are listed below and can help streamline the troubleshooting process for you. The first output shows the formed IPsec SAs for the L2L VPN connection. Note: On the router, a certificate map that is attached to the IKEv2 profile mustbe configured in order to recognize the DN. If the NAT overload is used, then a route-map should be used in order to exempt the VPN traffic of interest from translation. Access control lists can be applied on a VTI interface to control traffic through VTI. In order to exempt that traffic, you must create an identity NAT rule. Lets look at the ASA configuration using show run crypto ikev2 command. When IKEv2 tunnels are used on routers, the local identity used in the negotiation is determined by the identity local command under the IKEv2 profile: By default, the router uses the address as the local identity. show vpn-sessiondb license-summary. Can you please help me to understand this? Establish a policy for the supported ISAKMP encryption, authentication Diffie-Hellman, lifetime, and key parameters. 05:17 AM ASA#show crypto ipsec sa peer [peer IP add] Display the PSK. I used the following "show" commands, "show crypto isakmp sa" and "sh crypto ipsec sa" and 07-27-2017 03:32 AM. Here is an example: Note:You can configure multiple IKE policies on each peer that participates in IPSec. the "QM_idle", will remain idle for until security association expires, after which it will go to "deleted state". WebTo configure the IPSec VPN tunnel on Cisco ASA 55xx firewall running version 9.6: 1. Need to understand what does cumulative and peak mean here? In order to configure the IKEv1 preshared key, enter the tunnel-group ipsec-attributes configuration mode: The ASA uses Access Control Lists (ACLs) in order to differentiate the traffic that should be protected with IPSec encryption from the traffic that does not require protection. One way is to display it with the specific peer ip. Hi guys, I am curious how to check isakmp tunnel up time on router the way we can see on firewall. Phase 1 has successfully completed. Common places are, IKEv1/IKEv2 Between Cisco IOS and strongSwan Configuration Example, Configure a Site-to-Site IPSec IKEv1 Tunnel Between an ASA and a Cisco IOS Router. View with Adobe Reader on a variety of devices, View in various apps on iPhone, iPad, Android, Sony Reader, or Windows Phone, View on Kindle device or Kindle app on multiple devices. To permit any packets that come from an IPsec tunnel without checking ACLs for the source and destination interfaces, enter the sysopt connection permit-vpn command in global configuration mode. Updated to remove PII, title correction, introduction length, machine translation, style requirements, gerunds and formatting. Command to check IPSEC tunnel on ASA 5520, Customers Also Viewed These Support Documents, and try other forms of the connection with "show vpn-sessiondb ? So using the commands mentioned above you can easily verify whether or not an IPSec tunnel is active, down, or still negotiating. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. Phase 2 Verification. Connection : 10.x.x.x.Index : 3 IP Addr : 10..x.x.xProtocol : IKE IPsecEncryption : AES256 Hashing : SHA1Bytes Tx : 3902114912 Bytes Rx : 4164563005Login Time : 21:10:24 UTC Sun Dec 16 2012Duration : 22d 18h:55m:43s. Next up we will look at debugging and troubleshooting IPSec VPNs. Refer to Most Common IPsec L2L and Remote Access IPsec VPN Troubleshooting Solutions for information on the most common solutions to IPsec VPN problems. In order to specify the transform sets that can be used with the crypto map entry, enter the, The traffic that should be protected must be defined. I tried Monitoring-->VPN Statistics--> Session--->Filtered By---> IPSec Site-to-site . At both of the above networks PC connected to switch gets IP from ASA 5505. Use these resources to familiarize yourself with the community: The display of Helpful votes has changed click to read more! The expected output is to see both the inbound and outbound Security Parameter Index (SPI). The information in this document uses this network setup: If the ASA interfaces are not configured, ensure that you configure at least the IP addresses, interface names, and security-levels: Note: Ensure that there is connectivity to both the internal and external networks, and especially to the remote peer that will be used in order to establish a site-to-site VPN tunnel. 04-17-2009 In order to enable IKEv1, enter the crypto ikev1 enable
command in global configuration mode: For a LAN-to-LAN tunnel, the connection profile type is ipsec-l2l. Assigning the crypto map set to an interface instructs the ASA to evaluate all the traffic against the crypto map set and to use the specified policy during connection or SA negotiation. And ASA-1 is verifying the operational of status of the Tunnel by The documentation set for this product strives to use bias-free language. Or does your Crypto ACL have destination as "any"? You can do a "show crypto ipsec sa detail" and a "show crypto isakmp sa detail" both of them will give you the remaining time of the configured lifetime. Assigning the crypto map set to an interface instructs the ASA to evaluate all the traffic against the crypto map set and to use the specified policy during connection or SA negotiation. Regards, Nitin and try other forms of the connection with "show vpn-sessiondb ?" In order to define an IPSec transform set (an acceptable combination of security protocols and algorithms), enter the crypto ipsec transform-set command in global configuration mode. am using cisco asa 5505 , and i created 3 site to site vpns to other companies i wanna now the our configruation is mismaching or completed , so how i know that both phase1 and phase 2 are completed or missing parameters . If software versions that do not have the fix for Cisco bug ID CSCul48246 are used on the ASA, then the HTTP-URL-based lookup is not negotiated on the ASA, and Cisco IOS software causes the authorization attempt to fail. show crypto ipsec client ezvpn should show a state of IPSEC ACTIVE; If the VPN tunnel is not up, issue a ping to AD1 sourced from VLAN 10. You can do a "show crypto ipsec sa detail" and a "show crypto isakmp sa detail" both of them will give you the remaining time of the configured lifetime. Some of the command formats depend on your ASA software level, Hopefully the above information was helpfull, The field with "Connection: x.x.x.x" lists the remote VPN device IP address, The field with "Login Time" lists the time/date when the L2L VPN was formed, The field with "Duration" shows how long the L2L VPN has been up, Rest of the fields give information on the encryption, data transfered etc. 04:12 PM. If there is some problems they are probably related to some other configurations on the ASAs. Data is transmitted securely using the IPSec SAs. I need to confirm if the tunnel is building up between 5505 and 5520? Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. ** Found in IKE phase I aggressive mode. In this setup, PC1 in LAN-A wants to communicate with PC2 in LAN-B. Where the log messages eventually end up depends on how syslog is configured on your system. How to check the status of the ipsec VPN tunnel? - edited You can for example have only one L2L VPN configured and when it comes up, goes down and comes up again it will already give the Cumulative value of 2. WebHi, I need to identify the tunnel status is working perfectly from the logs of Router/ASA like from sh crypto isakmp sa , sh crypto ipsec sa, etc. Caution: On the ASA, you can set various debug levels; by default, level 1 is used. I mean the local/remote network pairs. Do this with caution, especially in production environments! Start / Stop / Status:$ sudo ipsec up , Get the Policies and States of the IPsec Tunnel:$ sudo ip xfrm state, Reload the secrets, while the service is running:$ sudo ipsec rereadsecrets, Check if traffic flows through the tunnel:$ sudo tcpdump esp. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. New here? - edited You can naturally also use ASDM to check the Monitoring section and from there the VPN section. This will also tell us the local and remote SPI, transform-set, DH group, & the tunnel mode for IPsec SA. There is a global list of ISAKMP policies, each identified by sequence number. Then you will have to check that ACLs contents either with. Note:An ACL for VPN traffic uses the source and destination IP addresses after Network Address Translation (NAT). However, when you configure the VPN in multi-context mode, be sure to allocate appropriate resources in the system thathas the VPN configured. You might have to use a drop down menu in the actual VPN page to select Site to Site VPN / L2L VPN show you can list the L2L VPN connections possibly active on the ASA. Could you please list down the commands to verify the status and in-depth details of each command output ?. An ACL for VPN traffic uses the source and destination IP addresses after Network Address Translation (NAT). Revoked certicates are represented in the CRL by their serial numbers. You must enable IKEv1 on the interface that terminates the VPN tunnel. Learn more about how Cisco is using Inclusive Language. "show crypto session " should show this information: Not 100% sure for the 7200 series, butin IOS I can use. This command show crypto IPsec sa shows IPsec SAs built between peers. All of the devices used in this document started with a cleared (default) configuration. New here? If the traffic passes through the tunnel, you must see the encaps/decaps counters increment. Phase 2 = "show crypto ipsec sa". Certificate lookup based on the HTTP URL avoids the fragmentation that results when large certificates are transferred. Configure IKE. In order for the crypto map entry to be complete, there are some aspects that must be defined at a minimum: The final step is to apply the previously defined crypto map set to an interface. "My concern was the output of "sh crypto isakmp sa" was always showing as "QM_idle". View the Status of the Tunnels. will show the status of the tunnels ( command reference ). One way is to display it with the specific peer ip. This document can also be used with these hardware and software versions: Configuration of an IKEv2 tunnel between an ASA and a router with the use of pre-shared keys is straightforward. crypto ipsec transform-set my-transform esp-3des esp-sha-hmac, access-list 101 permit ip 192.168.1.0 0.0.0.255 172.16.0.0 0.0.0.255. You must assign a crypto map set to each interface through which IPsec traffic flows. Configure tracker under the system block. Details 1. These are the peers with which an SA can be established. Establish a policy for the supported ISAKMP encryption, authentication Diffie-Hellman, lifetime, and key parameters. If peer ID validation is enabled and if IKEv2 platform debugs are enabled on the ASA, these debugs appear: For this issue, either the IP address of the certificate needs to be included in the peercertificate, or peer ID validation needs to be disabled on the ASA. I tried Monitoring-->VPN Statistics--> Session--->Filtered By---> IPSec Site-to-site . Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on RFP documentation, or language that is used by a referenced third-party product. Please rate helpful and mark correct answers. Note:An IKEv1 policy match exists when both of the policies from the two peers contain the same authentication, encryption, hash, and Diffie-Hellman parameter values. Phase 1 = "show crypto isakmp sa" or "show crypto ikev1 sa" or "show crypto ikev2 sa". To check if phase 2 ipsec tunnel is up: GUI: Navigate to Network->IPSec Tunnels GREEN indicates up RED indicates down. will show the status of the tunnels ( command reference ). During IPSec Security Association (SA) negotiations, the peers must identify a transform set or proposal that is the same for both of the peers. Please try to use the following commands. Details 1. By default the router has 3600 seconds as lifetime for ipsec and 86400 seconds for IKE. Miss the sysopt Command. Cert Distinguished Name for certificate authentication. To see details for a particular tunnel, try: If a site-site VPN is not establishing successfully, you can debug it. Deleted or updated broken links. On the ASA, the packet-tracer tool that matches the traffic of interest can be used in order to initiate the IPSec tunnel (such as, In order to verify whether IKEv1 Phase 2 is up on the ASA, enter the. 1. You can do a "show crypto ipsec sa detail" and a "show crypto isakmp sa detail" both of them will give you the remaining time of the configured lifetime. : 30.0.0.1, path mtu 1500, ip mtu 1500, ip mtu idb FastEthernet0/1, slot: 0, conn id: 2002, flow_id: 3, crypto map: branch-map, sa timing: remaining key lifetime (k/sec): (4553941/2400), slot: 0, conn id: 2003, flow_id: 4, crypto map: branch-map, sa timing: remaining key lifetime (k/sec): (4553941/2398). 06:02 PM. This is the destination on the internet to which the router sends probes to determine the Note:For each ACL entry there is a separate inbound/outbound SA created, which can result in a longshow crypto ipsec sacommand output (dependent upon the number of ACE entries in the crypto ACL). Both peers authenticate each other with a Pre-shared-key (PSK). This document describes common Cisco ASA commands used to troubleshoot IPsec issue. ** Found in IKE phase I aggressive mode. In order to configure the ISAKMP policies for the IKEv1 connections, enter the crypto isakmp policy command in global configuration mode. PAN-OS Administrators Guide. Web0. Is there any way to check on 7200 series router. PAN-OS Administrators Guide. You can use a ping in order to verify basic connectivity. The tool is designed so that it accepts a show tech or show running-config command from either an ASA or IOS router. The documentation set for this product strives to use bias-free language. I configured the Cisco IPSec VPN from cisco gui in asa, however, i would like to know, how to check whether the vpn is up or not via gui for [particular customer. Find answers to your questions by entering keywords or phrases in the Search bar above. show vpn-sessiondb license-summary. If there are multiple VPN tunnels on the ASA, it is recommended to use conditional debugs (. Here are few more commands, you can use to verify IPSec tunnel. The ASA supports IPsec on all interfaces. If certificates (rather than pre-shared keys) are used for authentication, the auth payloads are considerably larger. show vpn-sessiondb ra-ikev1-ipsec. show crypto isakmp sa. show crypto ipsec sa detailshow crypto ipsec sa. I used the following "show" commands, "show crypto isakmp sa" and "sh crypto ipsec sa" and below are their outputs: dst src state conn-id slot, 30.0.0.1 20.0.0.1 QM_IDLE 2 0, Crypto map tag: branch-map, local addr. The good thing is that i can ping the other end of the tunnel which is great. In, this case level 127 provides sufficient details to troubleshoot. On the ASA, if IKEv2 protocol debugs are enabled, these messages appear: In order to avoid this issue, use the no crypto ikev2 http-url cert command in order to disable this feature on the router when it peers with an ASA. Set Up Tunnel Monitoring. Details on that command usage are here. In order to verify whether IKEv1 Phase 1 is up on the ASA, enter theshow crypto ikev1 sa (or,show crypto isakmp sa)command. Note: Refer to Important Information on Debug Commands before you use debug commands. Ex. All rights reserved. Typically, there should be no NAT performed on the VPN traffic. You must assign a crypto map set to each interface through which IPsec traffic flows. This document can be used to verify the status of an IPSEC tunnel, validate tunnel monitoring, clear the tunnel, and restore the tunnel. An IKEv1 transform set is a combination of security protocols and algorithms that define the way that the ASA protects data. You can naturally also use ASDM to check the Monitoring section and from there the VPN section. Check Phase 1 Tunnel. The expected output is to see the ACTIVE state: In order to verify whether IKEv1 Phase 2 is up on the ASA, enter theshow crypto ipsec sa command. If you are looking at flushing the tunnel when the interface goes down then you have to enable keepalives. NIce article sir, do you know how to check the tunnel for interesting traffic in CISCO ASA,, senario there are existing tunnel and need to determine whether they are in use or not as there are no owner so eventually need to decommission them but before that analysis is required, From syslog server i can only see up and down of tunnel. For the scope of this post Router (Site1_RTR7200) is not used. Cisco recommends that you have knowledge of these topics: The information in this document is based on these software and hardware versions: The information in this document was created from the devices in a specific lab environment. WebUse the following commands to verify the state of the VPN tunnel: show crypto isakmp sa should show a state of QM_IDLE. Similarly, by default the ASA selects the local ID automatically so, when cert auth is used, it sends the Distinguished Name (DN) as the identity. This document describes how to configure a site-to-site (LAN-to-LAN) IPSec Internet Key Exchange Version 1 (IKEv1) tunnel via the CLI between a Cisco Adaptive Security Appliance (ASA) and a router that runs Cisco IOS software. WebTo configure the IPSec VPN tunnel on Cisco ASA 55xx firewall running version 9.6: 1. In your case the above output would mean that L2L VPN type connection has been formed 3 times since the last reboot or clearing of these statistics. This is not a bug, but is expected behavior.The difference between IKEv1 and IKEv2 is that, in IKEv2, the Child SAs are created as part of the AUTH exchange itself. and try other forms of the connection with "show vpn-sessiondb ?" New here? You should see a status of "mm active" for all active tunnels. Thus, you see 'PFS (Y/N): N, DH group: none' until the first rekey. show vpn-sessiondb l2l. Validation can be enabled or disabled on a per-tunnel-group basis with the peer-id-validate command: The difference in ID selection/validation causes two separate interoperability issues: When cert auth is used on the ASA, the ASA tries to validate the peer ID from the Subject Alternative Name (SAN) on the received certificate. 01-08-2013 How to know Site to Site VPN up or Down st. Customers Also Viewed These Support Documents. This command show run crypto mapis e use to see the crypto map list of existing Ipsec vpn tunnel. Well, aside from traffic passing successfully through the new tunnels, the command: will show the status of the tunnels (command reference). Access control lists can be applied on a VTI interface to control traffic through VTI. Configure tracker under the system block. Note: An ACL for VPN traffic must be mirrored on both of the VPN peers. Phase 2 = "show crypto ipsec sa". This document assumes you have configured IPsec tunnel on ASA. If a network device attempts to verify the validity of a certicate, it downloads and scans the current CRL for the serial number of the presented certificate. Establish a policy for the supported ISAKMP encryption, authentication Diffie-Hellman, lifetime, and key parameters. Ensure that the NAT (or noNAT) statement is not being masked by any other NAT statement. Then introduce interesting traffic and watch the output for details. ASA-1 and ASA-2 are establishing IPSCE Tunnel. 11-01-2017 more system:running-config command use If you want to see your config as it is in memory, without encrypting and stuff like that you can use this command. Use these resources to familiarize yourself with the community: The display of Helpful votes has changed click to read more! Configure IKE. This command Show vpn-sessiondb anyconnect command you can find both the username and the index number (established by the order of the client images) in the output of the show vpn-sessiondb anyconnect command. The good thing is that i can ping the other end of the tunnel which is great. 07:52 AM For the scope of this post Router (Site1_RTR7200) is not used. sh cry sess remote , detailed "uptime" means that the tunnel is established that period of time and there were no downs. Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on RFP documentation, or language that is used by a referenced third-party product. View the Status of the Tunnels. The ASA supports IPsec on all interfaces. If configured, it performs a multi-point check of the configuration and highlights any configuration errors and settings for the tunnel that would be negotiated. Can you please help me to understand this? In order to verify whether IKEv1 Phase 2 is up on the ASA, enter the show crypto ipsec sa command. 05:44 PM. New here? Typically, there must be no NAT performed on the VPN traffic. 02-21-2020 20.0.0.1, local ident (addr/mask/prot/port): (192.168.1.0/255.255.255.0/0/0), remote ident (addr/mask/prot/port): (172.16.0.0/255.255.255.0/0/0), #pkts encaps: 1059, #pkts encrypt: 1059, #pkts digest 1059, #pkts decaps: 1059, #pkts decrypt: 1059, #pkts verify 1059, #pkts compressed: 0, #pkts decompressed: 0, #pkts not compressed: 0, #pkts compr. Thank you in advance. At that stage, after retransmitting packets and then we will flush the phase I and the Phase II. In order to troubleshoot IPSec IKEv1 tunnel negotiation on an ASA firewall, you can use these debug commands: Note: If the number of VPN tunnels on the ASA is significant, thedebug crypto condition peer A.B.C.D command should be used before you enable the debugs in order to limit the debug outputs to include only the specified peer. To see details for a particular tunnel, try: show vpn-sessiondb l2l. Initiate VPN ike phase1 and phase2 SA manually. Tip: Refer to the Most Common L2L and Remote Access IPSec VPN Troubleshooting Solutions Cisco document for more information about how to troubleshoot a site-to-site VPN. ASA#more system:running-config | b tunnel-group [peer IP add] Display Uptime, etc. Some of the command formats depend on your ASA software level. NAC: Reval Int (T): 0 Seconds Reval Left(T): 0 Seconds SQ Int (T) : 0 Seconds EoU Age(T) : 4086 Seconds Hold Left (T): 0 Seconds Posture Token: What should i look for to confirm L2L state? This is the destination on the internet to which the router sends probes to determine the 07-27-2017 03:32 AM. In other words it means how many times a VPN connection has been formed (even if you have configured only one) on the ASA since the last reboot or since the last reset of these statistics. If you change the debug level, the verbosity of the debugs can increase. ASA#show crypto ipsec sa peer [peer IP add] Display the PSK. Two Sites (Site1 and Site-2) can communicate with each other by using ASA as gateway through a common Internet Service Provider Router (ISP_RTR7200). VPNs. Next up we will look at debugging and troubleshooting IPSec VPNs. and it remained the same even when I shut down the WAN interafce of the router. In this post, we are providing insight on Cisco ASA Firewall command which would help to troubleshoot IPsec vpn issue and how to gather relevant details aboutIPsec tunnel. * Found in IKE phase I main mode. Both output wouldnt show anything if there was any active L2L VPN connections so the VPN listed by the second command is up. During IKE AUTH stage Internet Security Association and Key Management Protocol (ISAKMP) negotiations, the peers must identify themselves to each other. Hopefully the above information Customers Also Viewed These Support Documents. NetFlow IOS Configuration Using CLI ASA , Router , Switches and Nexus, SITE TO SITE IPSEC VPN PHASE-1 AND PHASE-2 TROUBLESHOOTING STEPS, Wireless dBm Value Table - Wi-Fi Signal Strength Analysis with dBm, Cisco ASA IPsec VPN Troubleshooting Command - VPN Up time, Crypto,Ipsec, vpn-sessiondb, Crypto map and AM_ACTIVE. Down The VPN tunnel is down. ASA#more system:running-config | b tunnel-group [peer IP add] Display Uptime, etc. This feature is enabled on Cisco IOS software devices by default, so the cert req type 12 is used by Cisco IOS software. View with Adobe Reader on a variety of devices, View in various apps on iPhone, iPad, Android, Sony Reader, or Windows Phone, View on Kindle device or Kindle app on multiple devices, Resource Allocation in Multi-Context Mode on ASA, Validation of the Certificate Revocation List, Network Time Protocol: Best Practices White Paper, CLI Book 1: Cisco ASA Series General Operations CLI Configuration Guide, 9.8, Public Key Infrastructure Configuration Guide, Cisco IOS XE Release 3S, Certificates and Public Key Infrastructure (PKI), Cisco ASA 5506 Adaptive Security Appliance that runs software version 9.8.4, Cisco 2900 Series Integrated Services Router (ISR) that runs Cisco IOS software version 15.3(3)M1, Cisco ASA that runs software version 8.4(1) orlater, Cisco ISR Generation 2 (G2) that runs Cisco IOS software version 15.2(4)M or later, Cisco ASR 1000 Series Aggregation Services Routers that run Cisco IOS-XE software version 15.2(4)S or later, Cisco Connected Grid Routers that run software version 15.2(4)M or later.
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