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9.6

VPN Issue.

Asked by N3admin in Cisco PIX Firewall, Networking Hardware Firewalls, Virtual Private Networking (VPN)

Tags: PIX, PIX 501, VPN, Concentrator 3000, SPI, Phase 2, Cisco, ASA

Hi all,

I'm trying to get this VPN going and I'm a little stuck...need a 2nd pair of eyes.

Note: I do not have access to the Concentrator config, Concentrator remote IP is labeled 20.20.20.20 and the local outside as 10.10.10.10. It's also important to note that this tunnel has never worked, this is a first attempt.

PIX Version 6.3(5)
interface ethernet0 10baset
interface ethernet1 100full
nameif ethernet0 outside security0
nameif ethernet1 inside security100
enable password 8Ry2YjIyt7RRXU24 encrypted
passwd 3d0WfBOYJbZHN9iH encrypted
hostname pixfirewall
fixup protocol dns maximum-length 512
fixup protocol ftp 21
fixup protocol h323 h225 1720
fixup protocol h323 ras 1718-1719
fixup protocol http 80
fixup protocol rsh 514
fixup protocol rtsp 554
fixup protocol sip 5060
fixup protocol sip udp 5060
fixup protocol skinny 2000
fixup protocol smtp 25
fixup protocol sqlnet 1521
fixup protocol tftp 69
names
access-list 100 permit ip host 10.20.20.1 host 192.168.60.20
access-list 100 permit ip host 10.20.20.1 host 192.168.60.25
access-list 100 permit ip host 10.20.20.1 host 192.168.60.26
access-list 100 permit icmp any any
access-list 100 permit ip 10.20.20.0 255.255.255.0 192.168.60.0 255.255.255.0
access-list nonat permit ip 10.20.20.0 255.255.255.0 192.168.60.0 255.255.255.0
access-list nonat permit icmp 10.20.20.0 255.255.255.0 any echo-reply
pager lines 24
mtu outside 1500
mtu inside 1500
ip address outside 10.10.10.10 255.255.255.252
ip address inside 10.20.20.250 255.255.255.0
ip audit info action alarm
ip audit attack action alarm
pdm history enable
arp timeout 14400
global (outside) 10 interface
nat (inside) 0 access-list nonat
nat (inside) 10 0.0.0.0 0.0.0.0 0 0
route outside 0.0.0.0 0.0.0.0 10.10.10.254 1
timeout xlate 3:00:00
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 rpc 0:10:00 h225 1:00:00
timeout h323 0:05:00 mgcp 0:05:00 sip 0:30:00 sip_media 0:02:00
timeout sip-disconnect 0:02:00 sip-invite 0:03:00
timeout uauth 0:05:00 absolute
aaa-server TACACS+ protocol tacacs+
aaa-server TACACS+ max-failed-attempts 3
aaa-server TACACS+ deadtime 10
aaa-server RADIUS protocol radius
aaa-server RADIUS max-failed-attempts 3
aaa-server RADIUS deadtime 10
aaa-server LOCAL protocol local
no snmp-server location
no snmp-server contact
snmp-server community public
no snmp-server enable traps
floodguard enable
crypto ipsec transform-set ESP-3DES-SHA esp-3des esp-sha-hmac
crypto map mymap 1 ipsec-isakmp
crypto map mymap 1 match address 100
crypto map mymap 1 set peer 20.20.20.20
crypto map mymap 1 set transform-set ESP-3DES-SHA
crypto map mymap interface outside
isakmp enable outside
isakmp key ******** address 20.20.20.20 netmask 255.255.255.255
isakmp identity address
isakmp nat-traversal 20
isakmp policy 10 authentication pre-share
isakmp policy 10 encryption 3des
isakmp policy 10 hash sha
isakmp policy 10 group 1
isakmp policy 10 lifetime 86400
telnet 10.20.20.0 255.255.255.0 inside
telnet timeout 5
ssh timeout 5
console timeout 0
terminal width 80
Cryptochecksum:85be23232b15bc60ae07ba6b230b7fd5
: end

Here's the output of debugs for both isakmp and ipsec:

  (identity) local= 10.10.10.10, remote= 20.20.20.20,
    local_proxy= 10.20.20.1/255.255.255.255/0/0 (type=1),
    remote_proxy= 192.168.60.20/255.255.255.255/0/0 (type=1)

ISAKMP (0:0): sending NAT-T vendor ID - rev 2 & 3
ISAKMP (0): beginning Main Mode exchange
crypto_isakmp_process_block:src:20.20.20.20, dest:10.10.10.10 spt:500 dpt:500
OAK_MM exchange
ISAKMP (0): processing SA payload. message ID = 0

ISAKMP (0): Checking ISAKMP transform 1 against priority 10 policy
ISAKMP:      encryption 3DES-CBC
ISAKMP:      hash SHA
ISAKMP:      default group 1
ISAKMP:      auth pre-share
ISAKMP:      life type in seconds
ISAKMP:      life duration (VPI) of  0x0 0x1 0x51 0x80
ISAKMP (0): atts are acceptable. Next payload is 0
ISAKMP (0): processing vendor id payload

ISAKMP (0:0): vendor ID is NAT-T
ISAKMP (0): processing vendor id payload

ISAKMP (0): SA is doing pre-shared key authentication using id type ID_IPV4_ADDR
ISAKMP (0:0): constructed HIS NAT-D
ISAKMP (0:0): constructed MINE NAT-D
ISAKMP (0:0): Detected port floating
return status is IKMP_NO_ERROR
crypto_isakmp_process_block:src:20.20.20.20, dest:10.10.10.10 spt:500 dpt:500
OAK_MM exchange
ISAKMP (0): processing KE payload. message ID = 0

ISAKMP (0): processing NONCE payload. message ID = 0

ISAKMP (0): processing vendor id payload

ISAKMP (0): processing vendor id payload

ISAKMP (0): received xauth v6 vendor id

ISAKMP (0): processing vendor id payload

ISAKMP (0): speaking to another IOS box!

ISAKMP (0): processing vendor id payload

ISAKMP (0): speaking to a VPN3000 concentrator

ISAKMP (0:0): Detected NAT-D payload
ISAKMP (0:0): NAT match MINE hash
ISAKMP (0:0): Detected NAT-D payload
ISAKMP (0:0): NAT match HIS hash
ISAKMP (0): ID payload
      next-payload : 8
      type         : 1
      protocol     : 17
      port         : 500
      length       : 8
ISAKMP (0): Total payload length: 12
return status is IKMP_NO_ERROR
crypto_isakmp_process_block:src:20.20.20.20, dest:10.10.10.10 spt:500 dpt:500
OAK_MM exchange
ISAKMP (0): processing ID payload. message ID = 0
ISAKMP (0): processing HASH payload. message ID = 0
ISAKMP (0): processing vendor id payload

ISAKMP (0): remote peer supports dead peer detection

ISAKMP (0): SA has been authenticated

ISAKMP (0): beginning Quick Mode exchange, M-ID of 1047696439:3e729437IPSEC(key_engine): got a queue event...
IPSEC(spi_response): getting spi 0xb06ee45e(2960057438) for SA
      from   20.20.20.20 to  10.10.10.10 for prot 3

return status is IKMP_NO_ERROR
ISAKMP (0): sending INITIAL_CONTACT notify
ISAKMP (0): sending NOTIFY message 24578 protocol 1
VPN Peer: ISAKMP: Added new peer: ip:20.20.20.20/500 Total VPN Peers:1
VPN Peer: ISAKMP: Peer ip:20.20.20.20/500 Ref cnt incremented to:1 Total VPN Peers:1
crypto_isakmp_process_block:src:20.20.20.20, dest:10.10.10.10 spt:500 dpt:500
ISAKMP (0): processing NOTIFY payload 18 protocol 1
      spi 0, message ID = 2991570544
return status is IKMP_NO_ERR_NO_TRANS
crypto_isakmp_process_block:src:20.20.20.20, dest:10.10.10.10 spt:500 dpt:500
ISAKMP (0): processing DELETE payload. message ID = 3823512763, spi size = 16
ISAKMP (0): deleting SA: src 10.10.10.10, dst 20.20.20.20
return status is IKMP_NO_ERR_NO_TRANS
ISADB: reaper checking SA 0xac8b34, conn_id = 0  DELETE IT!

VPN Peer: ISAKMP: Peer ip:20.20.20.20/500 Ref cnt decremented to:0 Total VPN Peers:1
VPN Peer: ISAKMP: Deleted peer: ip:20.20.20.20/500 Total VPN peers:0IPSEC(key_engine): got a queue event...
IPSEC(key_engine_delete_sas): rec'd delete notify from ISAKMP
IPSEC(key_engine_delete_sas): delete all SAs shared with   20.20.20.20

I'm not sure if it's a subnet mismatch or what...I'm being told to NAT to a /32 address.

Any help would be appreciated. Thanks...
[+][-]11/08/09 03:44 AM, ID: 25770175Expert Comment

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[+][-]11/08/09 05:00 AM, ID: 25770335Expert Comment

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[+][-]11/08/09 07:17 PM, ID: 25773184Accepted Solution

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About this solution

Zones: Cisco PIX Firewall, Networking Hardware Firewalls, Virtual Private Networking (VPN)
Tags: PIX, PIX 501, VPN, Concentrator 3000, SPI, Phase 2, Cisco, ASA
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Solution Provided By: lrmoore
Participating Experts: 2
Solution Grade: A
 
[+][-]11/08/09 07:18 PM, ID: 25773188Author Comment

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