Hi Kings,
I just re-LABed my setup - works :) Thanks.
Is there a way to include the key server into the VPN network?

Regards
Simon

Am 31.08.2009 um 06:32 schrieb Kingsley Charles:

Hi Simon

With GETVPN, the internal IP address is retained in the ESP packet unlike other IPSec where it is wrapped with routable IP address. GETVPN is to be used on private networks.

In your case when you ping from one loopback address to other loopback address, all the devices in the path should have routes for both the loopback addresses.

Just disable GETVPN group member and see, if you are able ping normally without IPSec to verify the connectivity.

You can't encrypt traffic to and from Key server. Key server will only authenticate and push the IPSec SAs to peer. Encryption is only for group member to group member.

Please remove the following from the ACL.

access-list 100 permit ip 10.0.0.0 0.0.0.255 10.1.1.0 0.0.0.255
access-list 100 permit ip 10.0.0.0 0.0.0.255 10.3.3.0 0.0.0.255

With regards
Kings




On Mon, Aug 31, 2009 at 12:38 AM, Simon Baumann <[email protected] > wrote:
Hi,
it's me again wih an GET VPN topic ;) I configured an GET VPN with 3 routers, like this example: http://www.wr-mem.com/?p=307

Here are the configs:

######################################################################################################
key server (r1 of PG sec pod):
crypto isakmp policy 10
 encr 3des
 hash md5
 authentication pre-share
 group 2
crypto isakmp key cisco address 192.168.0.2
crypto isakmp key cisco address 192.168.0.3
!
!
crypto ipsec transform-set trans_gdoi esp-3des esp-sha-hmac
!
crypto ipsec profile ipsec_gdoi_profile
 set transform-set trans_gdoi
!
crypto gdoi group group_getvpn
 identity number 1111
 server local
  rekey retransmit 10 number 2
  rekey authentication mypubkey rsa getvpn_rekey
  rekey transport unicast
  sa ipsec 1
   profile ipsec_gdoi_profile
   match address ipv4 100
   replay counter window-size 64
  address ipv4 192.168.0.1
!

interface Loopback1
 ip address 10.0.0.1 255.255.255.0
!
interface FastEthernet0/1
 ip address 192.168.0.1 255.255.255.0
 duplex auto
 speed auto
!
router eigrp 1
 network 10.0.0.0 0.0.0.255
 network 192.168.0.0
 no auto-summary
!
ip forward-protocol nd
no ip http server
no ip http secure-server
!
access-list 100 permit ip 10.0.0.0 0.0.0.255 10.1.1.0 0.0.0.255
access-list 100 permit ip 10.0.0.0 0.0.0.255 10.3.3.0 0.0.0.255
access-list 100 permit ip 10.1.1.0 0.0.0.255 10.0.0.0 0.0.0.255
access-list 100 permit ip 10.1.1.0 0.0.0.255 10.3.3.0 0.0.0.255
access-list 100 permit ip 10.3.3.0 0.0.0.255 10.0.0.0 0.0.0.255
access-list 100 permit ip 10.3.3.0 0.0.0.255 10.1.1.0 0.0.0.255
######################################################################################################

client 1 (r7 of PG sec pod):
!
crypto isakmp policy 10
 encr 3des
 hash md5
 authentication pre-share
 group 2
crypto isakmp key cisco address 192.168.0.1
!
!
crypto gdoi group group_getvpn
 identity number 1111
 server address ipv4 192.168.0.1
!
!
crypto map map_getvpn 10 gdoi
 set group group_getvpn
!
interface Loopback1
 ip address 10.1.1.1 255.255.255.0
!
interface FastEthernet0/0
 ip address 192.168.0.2 255.255.255.0
 duplex auto
 speed auto
 crypto map map_getvpn
!
router eigrp 1
 network 10.1.1.0 0.0.0.255
 network 192.168.0.0
 no auto-summary
######################################################################################################

client 2 (r8 of PG sec pod):
!
crypto isakmp policy 10
 encr 3des
 hash md5
 authentication pre-share
 group 2
crypto isakmp key cisco address 192.168.0.1
!
!
crypto gdoi group group_getvpn
 identity number 1111
 server address ipv4 192.168.0.1
!
!
crypto map map_getvpn 10 gdoi
 set group group_getvpn
!
interface Loopback1
 ip address 10.3.3.1 255.255.255.0
!
interface FastEthernet0/0
 ip address 192.168.0.3 255.255.255.0
 duplex auto
 speed auto
 crypto map map_getvpn
!
interface FastEthernet0/1
 no ip address
 shutdown
 duplex auto
 speed auto
!
interface Serial0/0/0
 no ip address
 shutdown
!
router eigrp 1
 network 10.3.3.0 0.0.0.255
 network 192.168.0.0
 no auto-summary
!
######################################################################################################

The GET VPN is up. But I can't ping the other loopback interfaces when sourcing the ping from the local loopback as source. When I ping without an spefiic source interface, the traffic seems to go unencrypted to the other interface: the paket counters of the ipsec sa's do'nt increase.

Any hints what I have to check first? TIA!

Regards
Simon


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