How to Set Up Two-Factor Authentication.How to Record the Screen on Your Windows PC or Mac.How to Convert YouTube Videos to MP3 Files.How to Save Money on Your Cell Phone Bill.How to Free Up Space on Your iPhone or iPad. How to Block Robotexts and Spam Messages.Unfortunately I haven't put my hands on flex VPN so far. Here are a couple of FlexVPN configuration examples:īoth DMVPN and FlexVPN allow you to route dynamically and establish tunnels in a mesh fashion as needed to reach all the sites, whether spoke-hub or spoke-spoke. See the FlexVPN data sheet for an overview of its advantages: In your case I would suggest the DMVPN (refer ).Īn even more flexible approach, although less well-documented due to its relative age, is FlexVPN. Hi, this guide can be used only when you have Cisco VPN client software on one side. Now you can download and install a Cisco VPN client software on your operating system and configure it by referring the below screenshot. There we finish our Easy VPN server configuration. Here the access-list 120 will deny the local subnet (LAN subnet) to access the VPN users and allow all other traffic. We have to put the below configuration to achieve the same: We need to put a 'no NAT' statement for the VPN traffic, that means if there is a VPN traffic then do not NAT. Now we need to exempt NAT for the VPN users. Router(config-if)# tunnel protection ipsec profile VPN-PROFILE Router(config-if)# tunnel mode ipsec ipv4 Router(config-if)#ip unnumbered GigabitEthernet0/0 Router(config)#interface virtual-template 2 type tunnel The virtual interface should be unnumbered to a physical interface, usually to the internal LAN interface. The last step is to bind all the configurations to a virtual interface that will receive all the incoming VPN client connections. Router(conf-isa-prof)#client configuration address respondĦ.) Binding the configuration with a Virtual Interface Router(conf-isa-prof)#isakmp authorization list VPN-GROUP Router(conf-isa-prof)#client authentication list VPN-USER-AUTH Router(conf-isa-prof)#match identity group vpngroup Router(config)#crypto isakmp profile ISAKMP-PROFILE-1 Router(config)#crypto ipsec transform-set VPN-TRANSFORM-SET esp-3des esp-sha-hmacĬreate an ISAKMP profile that will match the client group (vpngroup) and mention the authentication and authorization used by the profile. Create a transform-set using the below command: The actual data encryption is happening in this phase. IPSec Transform-set is defined for data encryption and phase 2 authentication. (Note: The pool should contain a different subnet of IP's than your internal LAN.) Create the pool using the below command: The pool should contain the IP's that is distributed to the VPN clients as soon as it establish a connection to the VPN server. Router(config-isakmp-group)# max-users 20 Router(config-isakmp-group)# pool VPN-POOL-1 Router(config-isakmp-group)# key 6 mysecurekey Router(config)# crypto isakmp client configuration group vpngroup Max-Users : Maximum number of users allowed to connect simultaneously. Pre-shared key : The key is used for authentication to the group.ĭNS & Wins server : Users authenticating to this group will get this DNS and WINS server IP. The parameters defined in this example are: We have to create a group and configure all the parameters that need to be pushed into the client as soon as it successfully authenticate to the group. Router(config-isakmp)#authentication pre-share Here we enable the IKE Policy configuration where you can specify the parameters that are used during an IKE negotiation or Phase 1 policy negotiation. Router(config)#username tony privilege 15 password mypassword
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