Код:

Building configuration...

Current configuration : 1435 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Router
!
boot-start-marker
boot-end-marker
!
!
aaa new-model
!
!
aaa authentication ppp LNSAUTHEN local
aaa authorization network default local
!
aaa session-id common
!
resource policy
!
memory-size iomem 15
ip subnet-zero
!
!
ip cef
!
!
vpdn enable
!
vpdn-group L2TP
! Default L2TP VPDN group
 accept-dialin
  protocol l2tp
  virtual-template 23
!
!
!
!
!
username pnck password 0 pnck
!
!
!
crypto isakmp policy 110
 encr 3des
 hash md5
 authentication pre-share
 group 2
 lifetime 36000
crypto isakmp key password address 192.168.3.100
!
!
crypto ipsec transform-set SNRS esp-des
!
crypto map snrs-map 10 ipsec-isakmp
 set peer 192.168.3.1
 set transform-set SNRS
 match address 101
!
!
!
interface FastEthernet0/0
 ip address 192.168.3.1 255.255.255.0
 duplex auto
 speed auto
 crypto map snrs-map
!
interface FastEthernet0/1
 no ip address
 shutdown
 duplex auto
 speed auto
!
interface Virtual-Template23
 ip unnumbered FastEthernet0/0
 peer default ip address pool L2TPPOOL
 ppp authentication chap LNSAUTHEN
!
ip local pool L2TPPOOL 192.168.3.10 192.168.3.20
ip classless
!
no ip http server
no ip http secure-server
!
access-list 101 permit ip 192.168.3.0 0.0.0.255 192.168.3.0 0.0.0.255
!
!
control-plane
!
!
!
line con 0
line aux 0
line vty 0 4
!
scheduler allocate 20000 1000
!
end

Код:

%CRYPTO-4-RECVD_PKT_NOT_IPSEC: Rec'd packet not an IPSEC packet.        
(ip) vrf/dest_addr= /192.168.3.1, src_addr= 192.168.3.100, prot= 17