31.7.1/30
e 2/0
10.10.30.1/24
Con?¬?guring a Teleworker to Branch Of?¬?ce VPN Using CLI 35
Step 1: Con?¬?gure the ISAKMP Policy (IKE Phase 1)
Step 2: Con?¬?gure Policies for the Client Group(s)
Edmonton(config)#crypto isakmp policy 1 Creates an IKE phase 1
policy
Edmonton(config-isakmp)#encryption 3des Selects 3DES as the
encryption type
Edmonton(config-isakmp)#hash md5 Selects MD5 as the
hashing algorithm
Edmonton(config-isakmp)#authentication
pre-share
Uses a preshared
encryption key
Edmonton(config-isakmp)#group 2 Uses Dif?¬?e-Hellman
group 2 key exchange
algorithm
Edmonton(config-isakmp)#exit Exits isakmp mode and
returns to global
con?¬?guration mode
Client Group(s)
Edmonton(config)#crypto isakmp client
configuration group VPNGROUP
Creates a group for VPN
clients
Edmonton(config-isakmp-group)#key 12345678 Uses the key 12345678
Edmonton(config-isakmp-group)#pool VPNPOOL Uses addresses de?¬?ned in
the address pool
VPNPOOL
Edmonton(config-isakmp-group)#dns 192.31.7.1 Points the VPN client to a
DNS service
Edmonton(config-isakmp-group)#wins 10.10.30.10 Points the VPN client at a
WINS service
Edmonton(config-isakmp-group)#exit Exits isakmp-group mode
and returns to global
con?¬?guration mode
36 Con?¬?guring a Teleworker to Branch Of?¬?ce VPN Using CLI
Step 3: Con?¬?gure the IPsec Transform Sets (IKE Phase 2, Tunnel
Termination)
Step 4: Con?¬?gure Router AAA and Add VPN Client Users
Edmonton(config)#crypto ipsec transform-set
TRANSFORM-1 esp-3des esp-sha-hmac
Creates a transform set for
the IKE phase 2 policy
Edmonton(cfg-crypto-trans)#exit Exits cfg-crypto-trans
mode
Edmonton(config)#aaa new-model Starts the router AAA
service
NOTE: Cisco IOS??“
based VPNs require the
router AAA service to
be enabled.
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