Cisco crypto map and ipsec profile

Exits ipsec profile configuration mode and enters global configuration mode. Exits global configuration mode and enters privileged EXEC mode. Creates routing and forwarding tables for a VRF. Specifies the tunnel source as a loopback interface. Associates a tunnel interface with an IPsec profile. Exits interface configuration mode and returns to privileged EXEC mode.

The following example configuration uses a preshared key for authentication between peers. This section provides information that you can use to confirm that your configuration is working properly. To add the VRF to the static VTI example, include the ip vrf and ip vrf forwarding commands to the configuration as shown in the following example.

You can apply any QoS policy to the tunnel endpoint by including the service-policy statement under the tunnel interface. The following example shows how to police traffic out the tunnel interface. Applying the virtual firewall to the SVTI tunnel allows traffic from the spoke to pass through the hub to reach the Internet.

The figure below illustrates an SVTI with the spoke protected inherently by the corporate firewall. The basic SVTI configuration has been modified to include the virtual firewall definition:. Behind-the-firewall configuration allows users to enter the network, while the network firewall is protected from unauthorized access. When the template is cloned to make the virtual access interface, the service policy will also be applied to the virtual access interface.

Easy VPN Server. Next Generation Encryption. Security Architecture for the Internet Protocol. The Cisco Support and Documentation website provides online resources to download documentation, software, and tools. Use these resources to install and configure the software and to troubleshoot and resolve technical issues with Cisco products and technologies.

Access to most tools on the Cisco Support and Documentation website requires a Cisco. The following table provides release information about the feature or features described in this module. This table lists only the software release that introduced support for a given feature in a given software release train.

Unless noted otherwise, subsequent releases of that software release train also support that feature. The following commands were introduced or modified: crypto isakmp profile, interface virtual-template, show vtemplate, tunnel mode, virtual-template.

The following commands were introduced or modified: set security-policy limit, set reverse-route. IPsec VTIs provide a routable interface type for terminating IPsec tunnels and an easy way to define protection between sites to form an overlay network. IPsec VTIs simplify configuration of IPsec for protection of remote links, support multicast, and simplify network management and load balancing.

Skip to content Skip to search Skip to footer. Book Contents Book Contents. Find Matches in This Book. Log in to Save Content. PDF - Complete Book 2. Updated: September 2, IPsec Virtual Tunnel Interfaces IPsec virtual tunnel interfaces VTIs provide a routable interface type for terminating IPsec tunnels and an easy way to define protection between sites to form an overlay network. Note Security threats, as well as the cryptographic technologies to help protect against them, are constantly changing.

Tunnel Protection Do not configure the shared keyword when using the tunnel mode ipsec ipv4 command for IPsec IPv4 mode. Traceroute The traceroute function with crypto offload on VTIs is not supported. Static Virtual Tunnel Interfaces SVTI configurations can be used for site-to-site connectivity in which a tunnel provides always-on access between two sites.

The figure below illustrates how a SVTI is used. Figure 1. Figure 2. Router 1 authenticates User 1. Figure 3. Packet Flow into the IPsec Tunnel After packets arrive on the inside interface, the forwarding engine switches the packets to the VTI, where they are encrypted. Figure 4. The tunnel must be statically configured for an initiator.

Step 2 configure terminal Example: Device configure terminal Enters global configuration mode. Step 4 set transform-set transform-set-name [ transform-set-name Step 5 exit Example: Device ipsec-profile exit Exits IPsec profile configuration mode, and enters global configuration mode. Step 6 interface type number Example: Device config interface tunnel 0 Specifies the interface on which the tunnel will be configured and enters interface configuration mode.

Step 7 ip address address mask Example: Device config-if ip address Step 8 tunnel mode ipsec ipv4 Example: Device config-if tunnel mode ipsec ipv4 Defines the mode for the tunnel. Step 9 tunnel source interface-type interface-number Example: Device config-if tunnel source loopback 0 Specifies the tunnel source as a loopback interface.

Step 10 tunnel destination ip-address Example: Device config-if tunnel destination In the example, the first router in this procedure is identified as "". Step 2 neighbor ip-address remote-as autonomous-system-number Example: Device config-router neighbor Step 3 network network-ip-address mask subnet-mask Example: Device config-router network 2.

Step 4 exit Example: Device config-router exit Exits router configuration mode. Step 5 Enter the following commands on the second router. Step 6 router bgp autonomous-system-number Example: Device config router bgp Enters router configuration mode and creates a BGP routing process. In the example, the second router in this procedure is identified as "". Step 7 neighbor ip-address remote-as autonomous-system-number Example: Device config-router neighbor Step 8 network network-ip-address mask subnet-mask Example: Device config-router network 1.

Note Use the exact network IP address and subnet mask. Step 5 exit Example: Device ipsec-profile exit Exits ipsec profile configuration mode and enters global configuration mode. Step 6 interface virtual-template number type tunnel Example: Device config interface virtual-template 2 type tunnel Defines a virtual-template tunnel interface and enters interface configuration mode. Step 7 tunnel mode ipsec ipv4 Example: Device config-if tunnel mode ipsec ipv4 Defines the mode for the tunnel.

Step 9 exit Example: Device config-if exit Exits interface configuration mode. Step 11 match identity address ip-address mask Example: Device conf-isa-prof match identity address SUMMARY STEPS enable configure terminal ip vrf vrf-name rd route-distinguisher exit crypto keyring keyring-name pre-shared-key address key key exit crypto isakmp profile profile-name keyring keyring-name match identity address mask virtual-template template-number exit crypto ipsec transform-set transform-set-name transform1 [ transform2 ] [ transform3 ] exit crypto ipsec profile name set security-policy limit maximum-limit set transform-set transform-set-name [ transform-set-name Step 6 crypto keyring keyring-name Example: Device config crypto keyring cisco Defines a crypto key ring and enters key ring configuration mode.

Step 7 pre-shared-key address key key Example: Device config-keyring pre-shared-key address Step 8 exit Example: Device config-keyring exit Exits keyring configuration mode and enters global configuration mode. Step 11 match identity address mask Example: Device conf-isa-prof match identity address Step 12 virtual-template template-number Example: Device conf-isa-prof virtual-template Specifies the virtual template that will be used to clone virtual access interfaces.

Step 14 crypto ipsec transform-set transform-set-name transform1 [ transform2 ] [ transform3 ] Example: Device config crypto ipsec transform-set cisco esp-aes esp-sha-hmac Defines the transform set and enters crypto transform configuration mode. Step 15 exit Example: Device conf-crypto-trans exit Exits crypto transform configuration mode and enters global configuration mode. Step 16 crypto ipsec profile name Example: Device config crypto ipsec profile cisco-ipsec-profile Defines the IPsec parameters used for IPsec encryption between two IPsec devices, and enters IPsec profile configuration mode.

Step 17 set security-policy limit maximum-limit Example: Device ipsec-profile set security-policy limit 3 Defines an upper limit to the number of flows that can be created for an individual virtual access interface.

Step 18 set transform-set transform-set-name [ transform-set-name Step 19 exit Example: Device ipsec-profile exit Exits IPsec profile and enters global configuration mode. Step 20 interface virtual-template number type tunnel Example: Device config interface virtual-template type tunnel Creates a virtual template interface that can be configured interface and enters interface configuration mode.

Step 22 ip unnumbered type number Example: Device config-if ip unnumbered GigabitEthernet 0. Step 23 tunnel mode ipsec ipv4 Example: Device config-if tunnel mode ipsec ipv4 Defines the mode for the tunnel. Step 24 tunnel protection profile ipsec profile-name Example: Device config-if tunnel protection ipsec profile PROF Associates a tunnel interface with an IPsec profile. Step 8 Do one of the following: tunnel mode ipsec ipv4 v6-overlay tunnel mode ipsec ipv6 v4-overlay Example: Device config-if tunnel mode ipsec ipv4 v6-overlay Defines the mode for the tunnel.

Step 9 tunnel source interface-type interface-type Example: Device config-if tunnel source loopback 0 Specifies the tunnel source as a loopback interface. Step 5 set transform-set transform-set-name [ transform-set-name Step 6 exit Example: Device ipsec-profile exit Exits ipsec profile configuration mode and enters global configuration mode. Step 7 interface virtual-template number type tunnel Example: Device config interface virtual-template 2 type tunnel Defines a virtual-template tunnel interface and enters interface configuration mode.

Step 10 exit Example: Device config-if exit Exits interface configuration mode. Step 12 match identity address ip-address mask Example: Device conf-isa-prof match identity address Figure 5. Cisco Router Configuration hostname cisco Figure 6. Cisco Router Configuration hostname cisco ! Router show running-config interface Virtual-Access2 Building configuration Current configuration : bytes! This configuration is not recommended.

Table 1. Was this Document Helpful? Yes No Feedback. Security threats, as well as the cryptographic technologies to help protect against them, are constantly changing. The Tunnel Mode Auto Selection feature eases the configuration for a responder only. Step 1. Enables privileged EXEC mode. Step 2.

Enters global configuration mode. Step 3. After all a simple IPSec tunnel will not pass multicast traffic so routing updates will not traverse the tunnel requiring you to either rely on RRI Reverse route injection or static routes. So how do we get over this little obstacle, we run a GRE tunnel. I covered GRE tunnels a few posts back. Now there are a few ways we can do this, the first is to run the GRE tunnel over the IPSec tunnel, in this case the tunnel destination is at the other end of the IPSec tunnel and is matched by the ACL of the IPSec tunnel to ensure the traffic between the tunnel endpoints are encrypted.

You will notice some of these configurations will look verify familiar such as the ISAKMP policy and the transform-set. However there are a couple of differences you will notice, such as the absence of a crypto map a few new profiles and keyrings. This configuration allows us to nest specific hosts and pre-shared keys to a specific keyring, that we will apply later on.

The ISAKMP profile is where we specify what end points should match this policy, as well as tie in the keyring we created earlier. Now we have the IPSec profile, this is pretty close to what the crypto map did. So now that we have everything we need all we need to do is apply our IPSec profile to the tunnel interface. The 2 commands that make this happen are the tunnel mode ipsec ipv4 this tells the tunnel that it is going to be running in IPSec mode.

This GRE tunnel also provides us a transport mechanism to carry multicast traffic so we can run a routing protocol over this connection providing us with a scalable solution for managing site-to-site VPNs and our routing infrastructure. CCIE or Null! My journey to CCIE!

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