: 10.31.2.30/0 path mtu 1500, ipsec overhead 74(44), media mtu 1500 PMTU time remaining (sec): 0, DF policy: copy-df ICMP error validation: disabled, TFC packets: disabled current outbound spi: 06DFBB67 current inbound spi : 09900545, inbound esp sas: spi: 0x09900545 (160433477) transform: esp-aes-256 esp-sha-hmac no compression in use settings ={L2L, Tunnel, IKEv1, } slot: 0, conn_id: 12288, crypto-map: COMMC_Traffic_Crypto sa timing: remaining key lifetime (kB/sec): (3914702/24743) IV size: 16 bytes replay detection support: Y Anti replay bitmap: 0xFFFFFFFF 0xFFFFFFFF outbound esp sas: spi: 0x06DFBB67 (115325799) transform: esp-aes-256 esp-sha-hmac no compression in use settings ={L2L, Tunnel, IKEv1, } slot: 0, conn_id: 12288, crypto-map: COMMC_Traffic_Crypto sa timing: remaining key lifetime (kB/sec): (3914930/24743) IV size: 16 bytes replay detection support: Y Anti replay bitmap: 0x00000000 0x00000001, Connection : 10.31.2.30Index : 3 IP Addr : 10.31.2.30Protocol : IKEv1 IPsecEncryption : IKEv1: (1)AES256 IPsec: (1)AES256Hashing : IKEv1: (1)SHA1 IPsec: (1)SHA1Bytes Tx : 71301 Bytes Rx : 305820Login Time : 11:59:24 UTC Tue Jan 7 2014Duration : 1h:07m:54sIKEv1 Tunnels: 1IPsec Tunnels: 1. In order to exempt that traffic, you must create an identity NAT rule. If you change the debug level, the verbosity of the debugs can increase. You should see a status of "mm active" for all active tunnels. IPSec 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. 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. The expected output is to see the MM_ACTIVE state: In order to verify whether the IKEv1 Phase 1 is up on the IOS, enter the show crypto isakmp sa command. If the traffic passes through the tunnel, you must see the encaps/decaps counters increment. The output you are looking at is of Phase 1 which states that Main Mode is used and the Phase 1 seems to be fine. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. Web0. Access control lists can be applied on a VTI interface to control traffic through VTI. Find answers to your questions by entering keywords or phrases in the Search bar above. This document can be used to verify the status of an IPSEC tunnel, validate tunnel monitoring, clear the tunnel, and restore the tunnel. IPSec LAN-to-LAN Checker Tool. Could you please list down the commands to verify the status and in-depth details of each command output ?. Typically, there should be no NAT performed on the VPN traffic. If the NAT overload is used, then a route-map should be used in order to exempt the VPN traffic of interest from translation. I tried Monitoring-->VPN Statistics--> Session--->Filtered By---> IPSec Site-to-site . The expected output is to see both the inbound and outbound Security Parameter Index (SPI). However, when you use certificate authentication, there are certain caveats to keep in mind. Set Up Tunnel Monitoring. check IPSEC tunnel If your network is live, make sure that you understand the potential impact of any command. You can use a ping in order to verify basic connectivity. How to check IPSEC show vpn-sessiondb detail l2l. An encrypted tunnel is built between 68.187.2.212 and 212.25.140.19. Phase 1 = "show crypto isakmp sa" or "show crypto ikev1 sa" or "show crypto ikev2 sa". If you change the debug level, the verbosity of the debugs canincrease. The ASA supports IPsec on all interfaces. IPsec ASA#show crypto isakmp sa detail | b [peer IP add] Check Phase 2 Tunnel. Configure tracker under the system block. To confirm data is actually sent and received over the VPN, check the output of "show crypto ipsec sa" and confirm the counters for encaps|decaps are increasing. Here IP address 10.x is of this ASA or remote site? show vpn-sessiondb license-summary. 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. The router does this by default. You should see a status of "mm active" for all active tunnels. To see details for a particular tunnel, try: show vpn-sessiondb l2l. Configure IKE. The expected output is to see theMM_ACTIVEstate: In order to verify whether IKEv1 Phase 2 is up on the ASA, enter theshow crypto ipsec sacommand. Please try to use the following commands. show vpn-sessiondb detail l2l. Configure tracker under the system block. New here? 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. Ensure that the NAT (or noNAT) statement is not being masked by any other NAT statement. For the scope of this post Router (Site1_RTR7200) is not used. There is a global list of ISAKMP policies, each identified by sequence number. This command show the output such as the #pkts encaps/encrypt/decap/decrypt, these numbers tell us how many packets have actually traversed the IPsec tunnel and also verifies we are receiving traffic back from the remote end of the VPN tunnel. Failure or compromise of a device that usesa given certificate. ", Peak: Tells how many VPNs have been up at the most at the same time, Cumulative: Counts the total amount of connections that have been up on the device. I would try the following commands to determine better the L2L VPN state/situation, You can naturally also use ASDM to check the Monitoring section and from there the VPN section. IPsec tunnel : 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). The good thing is that i can ping the other end of the tunnel which is great. or not? Miss the sysopt Command. VPNs. 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. 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. The identity NAT rule simply translates an address to the same address. endpoint-dns-name is the DNS name of the endpoint of the tunnel interface. Cisco ASA : 20.0.0.1, remote crypto endpt. You should see a status of "mm active" for all active tunnels. Web0. 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. Remember to turn off all debugging when you're done ("no debug all"). Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. 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. Next up we will look at debugging and troubleshooting IPSec VPNs. 03-11-2019 Regards, Nitin Cisco ASA ** Found in IKE phase I aggressive mode. This is the destination on the internet to which the router sends probes to determine the 01-08-2013 The expected output is to see both the inbound and outbound Security Parameter Index (SPI). I suppose that when I type the commandsh cry sess remote , detailed "uptime" means that the tunnel is established that period of time and there were no downs. 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). 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. 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. It examines the configuration and attempts to detect whether a crypto map based LAN-to-LAN IPSec tunnel is configured. ASA#show crypto ipsec sa peer [peer IP add] Display the PSK. For IKEv1, the remote peer policy must also specify a lifetime less than or equal to the lifetime in the policy that the initiator sends. Tunnel If the lifetimes are not identical, then the ASA uses the shorter lifetime. Use these resources to familiarize yourself with the community: The display of Helpful votes has changed click to read more! Customers Also Viewed These Support Documents. Miss the sysopt Command. Thus, you see 'PFS (Y/N): N, DH group: none' until the first rekey. * Found in IKE phase I main mode. 04:48 AM Please try to use the following commands. 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. There is a global list of ISAKMP policies, each identified by sequence number. Cisco ASA IPsec VPN Troubleshooting Command For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. Do this with caution, especially in production environments. Details 1. Hope this helps. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. Could you please list down the commands to verify the status and in-depth details of each command output ?. 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. And ASA-1 is verifying the operational of status of the Tunnel by cisco asa Use these resources to familiarize yourself with the community: The display of Helpful votes has changed click to read more! ASA#more system:running-config | b tunnel-group [peer IP add] Display Uptime, etc. Hi guys, I am curious how to check isakmp tunnel up time on router the way we can see on firewall. In order to apply this, enter the crypto map interface configuration command: Here is the final IOS router CLI configuration: Before you verify whether the tunnel is up and that it passes the traffic, you must ensure that the traffic of interest is sent towards either the ASA or the IOS router. 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. 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. 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? Tunnel To Check L2L tunnel status show vpn-sessiondb license-summary. 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. VPNs. Hopefully the above information I tried Monitoring-->VPN Statistics--> Session--->Filtered By---> IPSec Site-to-site . One way is to display it with the specific peer ip. show crypto isakmp sa. IPsec The ASA then applies the matched transform set or proposal in order to create an SA that protects data flows in the access list for that crypto map. The documentation set for this product strives to use bias-free language. Hopefully the above information 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. ** Found in IKE phase I aggressive mode. So using the commands mentioned above you can easily verify whether or not an IPSec tunnel is active, down, or still negotiating. If the traffic passes through the tunnel, you should see the encaps/decaps counters increment. Connection : 150.1.13.3Index : 3 IP Addr : 150.1.13.3Protocol : IKEv1 IPsecEncryption : 3DES Hashing : MD5Bytes Tx : 69400 Bytes Rx : 69400Login Time : 13:17:08 UTC Thu Dec 22 2016Duration : 0h:04m:29s. will show the status of the tunnels ( command reference ). These commands work on both ASAs and routers: Note: In this output, unlike in IKEv1, the Perfect Forwarding Secrecy (PFS) Diffie-Hellman (DH) group value displays as 'PFS (Y/N): N, DH group: none' during the first tunnel negotiation; after a rekey occurs, the correct values appear. Phase 1 has successfully completed. show vpn-sessiondb l2l. Set Up Site-to-Site VPN. This feature is enabled on Cisco IOS software devices by default, so the cert req type 12 is used by Cisco IOS software. New here? Hi guys, I am curious how to check isakmp tunnel up time on router the way we can see on firewall. New here? Ensure that the NAT (or noNAT) statement is not being masked by any other NAT statement. Cisco ASA Cert Distinguished Name for certificate authentication. will show the status of the tunnels ( command reference ). Details 1. Note:If you do not specify a value for a given policy parameter, the default value is applied. 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. 04:12 PM. This usually results in fragmentation, which can then cause the authentication to fail if a fragment is lost or dropped in the path. IPSec LAN-to-LAN Checker Tool. - edited The router does this by default. Refer to the Certificate to ISAKMP Profile Mapping section of the Internet Key Exchange for IPsec VPNs Configuration Guide, Cisco IOS XE Release 3S Cisco document for information about how to set this up. I configured the Cisco IPSec VPNfrom ciscoguiin asa, however, i would like to know, how to check whether the vpnis up or not via guifor [particular customer. 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. 01-07-2014 : 10.31.2.19/0, remote crypto endpt. If it is an initiator, the tunnel negotiation fails and PKI and IKEv2 debugs on the router show this: Use this section in order to confirm that your configuration works properly. You can naturally also use ASDM to check the Monitoring section and from there the VPN section. Data is transmitted securely using the IPSec SAs. cisco asa How can I detect how long the IPSEC tunnel has been up on the router? To check if phase 2 ipsec tunnel is up: GUI: Navigate to Network->IPSec Tunnels GREEN indicates up RED indicates down. New here? Need to understand what does cumulative and peak mean here? the "QM_idle", will remain idle for until security association expires, after which it will go to "deleted state". This document can be used to verify the status of an IPSEC tunnel, validate tunnel monitoring, clear the tunnel, and restore the tunnel. Certicates canbe revoked for a number of reasons such as: The mechanism used for certicate revocation depends on the CA. If there are multiple VPN tunnels on the ASA, it is recommended to use conditional debugs (. This is the only command to check the uptime. Next up we will look at debugging and troubleshooting IPSec VPNs. Do this with caution, especially in production environments! show crypto isakmp sa. 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 naturally also use ASDM to check the Monitoring section and from there the VPN section. Please rate helpful and mark correct answers. New here? This document describes how to set up a site-to-site Internet Key Exchange version 2 (IKEv2) tunnel between a Cisco Adaptive Security Appliance (ASA) and a router that runs Cisco IOS software. 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. 04-17-2009 07:07 AM. In other words, have you configure the other ASA to tunnel all traffic through the L2L VPN? In this setup, PC1 in LAN-A wants to communicate with PC2 in LAN-B. Initiate VPN ike phase1 and phase2 SA manually. Hi guys, I am curious how to check isakmp tunnel up time on router the way we can see on firewall. Note: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 packet-tracer input inside tcp 10.10.10.10 12345 10.20.10.10 80 detailed for example). 07-27-2017 03:32 AM. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.