[VPN] Pix 515E VPN tunnel Via Cisco Client 4.0 thru a Nattted home DSL router
Marc Stavale
MStavale at airmethods.com
Fri Sep 10 17:45:43 EDT 2004
Scenario: I have a Pix 515E configured to access a VPN tunnel. If I
dial into the internet thru AT&T and get an IP of 206.x.x.x (internet
routable), address and try to negotiate a tunnel using the Cisco VPN
Client I can do so no problems. However, if I try to do one from my
'house' which is behind my DSL modem and thus has a natted address (IE:
my modem outside is routable but my inside address on my computer is a
192.168.0.x address's), my tunnel fails. Here is a copy of my Pix
config and I do have the 'isakmp nat-traversal' command in it but it
still fails. I havn't configured my inside conduits yet as just want to
get the tunnel working first. Any ideas?
Building configuration...
: Saved
:
PIX Version 6.3(3)133
interface ethernet0 100full
interface ethernet1 100full
interface ethernet2 auto shutdown
nameif ethernet0 outside security0
nameif ethernet1 inside security100
nameif ethernet2 intf2 security4
enable password fOtLfvYl90/VEkOk encrypted
passwd 2KFQnbNIdI.2KYOU encrypted
hostname denvervpn
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 102 permit ip 192.168.0.0 255.255.252.0 192.168.113.0
255.255.255.0
pager lines 24
mtu outside 1500
mtu inside 1500
mtu intf2 1500
ip address outside 12.45.111.234 255.255.255.248
ip address inside 192.168.8.17 255.255.255.248
no ip address intf2
ip audit info action alarm
ip audit attack action alarm
ip local pool vpnpool 192.168.113.1-192.168.113.254
pdm history enable
arp timeout 14400
nat (inside) 0 access-list 102
conduit permit icmp any any
route outside 0.0.0.0 0.0.0.0 12.45.111.225 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 uauth 0:05:00 absolute
aaa-server TACACS+ protocol tacacs+
aaa-server RADIUS protocol radius
aaa-server LOCAL protocol local
no snmp-server location
no snmp-server contact
snmp-server community public
no snmp-server enable traps
floodguard enable
sysopt connection permit-ipsec
crypto ipsec transform-set myset esp-des esp-md5-hmac
crypto dynamic-map dynmap 10 set transform-set myset
crypto map mymap 10 ipsec-isakmp dynamic dynmap
crypto map mymap client configuration address initiate
crypto map mymap client configuration address respond
crypto map mymap interface outside
crypto map map1 10 ipsec-isakmp dynamic map2
isakmp enable outside
isakmp identity address
isakmp client configuration address-pool local vpnpool outside
isakmp nat-traversal 10
isakmp policy 10 authentication pre-share
isakmp policy 10 encryption des
isakmp policy 10 hash md5
isakmp policy 10 group 2
isakmp policy 10 lifetime 86400
vpngroup base1 address-pool vpnpool
vpngroup base1 dns-server 192.168.0.125
vpngroup base1 wins-server 192.168.0.126
vpngroup base1 default-domain amc.local
vpngroup base1 idle-time 1800
vpngroup base1 password ********
vpngroup base2 address-pool vpnpool
vpngroup base2 dns-server 192.168.0.125
vpngroup base2 wins-server 192.168.0.126
vpngroup base2 default-domain amc.local
vpngroup base2 split-tunnel 102
vpngroup base2 idle-time 1800
vpngroup base2 password ********
telnet timeout 5
ssh timeout 60
console timeout 0
terminal width 80
Cryptochecksum:5ddd4c6f87bb9677e21fdff9262b50ac
: end
[OK]
Marc Stavale
Network Engineer
Airmethods
7211 S. Peoria St.
Englewood Co. 80112
303-792-7491
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