Question

Cannot Ping Local LAN Through VPN Client IPSec to ASA 5505

Asked by: vrodder

Hello. I know there are a lot of similar questions here. I've reviewed most of them and haven't been able to figure out the answer. I have an ASA 5505 with the below configuration. When I connect from a Cisco VPN Client (version 5), I am able to login and establish a connection. When I attempt to ping the internal LAN, I get timeouts. When I ping the internal ASA interface it returns the pings resolved as the external interface IP address. I've read other posts where crypto isakmp nat-traversal does the trick, so I included that in the config, and it's not helping.

Anything you can do would be greatly appreciated.


: Saved
:
ASA Version 8.0(2)
!
hostname chi-fw1
domain-name ABC123.com
enable password JMfZP.BelKYwu9uu encrypted
names
!
interface Vlan1
 nameif inside
 security-level 100
 ip address 10.2.2.1 255.255.255.0
!
interface Vlan2
 nameif outside
 security-level 0
 ip address xx.xx.xx.194 255.255.255.224
!
interface Ethernet0/0
 switchport access vlan 2
!
interface Ethernet0/1
!
interface Ethernet0/2
!
interface Ethernet0/3
!
interface Ethernet0/4
!
interface Ethernet0/5
!
interface Ethernet0/6
!
interface Ethernet0/7
!
passwd PGktX.gI4nhIkOwV encrypted
ftp mode passive
clock timezone CST -6
clock summer-time CDT recurring
dns server-group DefaultDNS
 domain-name ABC123.com
access-list outside_access_in extended permit icmp any any
access-list inside_nat0_outbound extended permit ip any 10.0.3.0 255.255.255.0
access-list ABC123_splitTunnelAcl standard permit 10.2.2.0 255.255.255.0
access-list inside_access_in extended permit ip any any
pager lines 24
logging asdm informational
mtu outside 1500
mtu inside 1500
ip local pool vpn-client-addresspool 10.0.3.0-10.0.3.254 mask 255.255.255.0
icmp unreachable rate-limit 1 burst-size 1
asdm image disk0:/asdm-602.bin
no asdm history enable
arp timeout 14400
global (outside) 1 interface
nat (inside) 0 access-list inside_nat0_outbound
nat (inside) 1 0.0.0.0 0.0.0.0
access-group outside_access_in in interface outside
access-group inside_access_in in interface inside
route outside 0.0.0.0 0.0.0.0 xx.xx.xx.193 1
timeout xlate 3:00:00
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02
timeout sunrpc 0:10:00 h323 0:05:00 h225 1:00:00 mgcp 0:05:00 mgcp-pat 0:05:00
timeout sip 0:30:00 sip_media 0:02:00 sip-invite 0:03:00 sip-disconnect 0:02:00
timeout uauth 0:05:00 absolute
dynamic-access-policy-record DfltAccessPolicy
aaa-server RADIUS protocol radius
aaa-server RADIUS host 10.2.2.253
 key vpn
 radius-common-pw vpn
aaa-server RADIUS host 10.2.2.250
 key vpn
 radius-common-pw vpn
http server enable
http 10.2.2.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart
crypto ipsec transform-set ESP-AES-256-MD5 esp-aes-256 esp-md5-hmac
crypto ipsec transform-set ESP-DES-SHA esp-des esp-sha-hmac
crypto ipsec transform-set ESP-3DES-SHA esp-3des esp-sha-hmac
crypto ipsec transform-set ESP-DES-MD5 esp-des esp-md5-hmac
crypto ipsec transform-set ESP-AES-192-MD5 esp-aes-192 esp-md5-hmac
crypto ipsec transform-set ESP-AES-256-SHA esp-aes-256 esp-sha-hmac
crypto ipsec transform-set ESP-AES-128-SHA esp-aes esp-sha-hmac
crypto ipsec transform-set ESP-AES-192-SHA esp-aes-192 esp-sha-hmac
crypto ipsec transform-set ESP-AES-128-MD5 esp-aes esp-md5-hmac
crypto ipsec transform-set ESP-3DES-MD5 esp-3des esp-md5-hmac
crypto dynamic-map SYSTEM_DEFAULT_CRYPTO_MAP 65535 set pfs
crypto dynamic-map SYSTEM_DEFAULT_CRYPTO_MAP 65535 set transform-set ESP-AES-128-SHA ESP-AES-128-MD5 ESP-AES-192-SHA ESP-AES-192-MD5 ESP-AES-256-SHA ESP-AES-256-MD5 ESP-3DES-SHA ESP-3DES-MD5 ESP-DES-SHA ESP-DES-MD5
crypto map outside_map 65535 ipsec-isakmp dynamic SYSTEM_DEFAULT_CRYPTO_MAP
crypto map outside_map interface outside
crypto isakmp enable outside
crypto isakmp policy 10
 authentication pre-share
 encryption des
 hash sha
 group 2
 lifetime 86400
crypto isakmp policy 30
 authentication pre-share
 encryption 3des
 hash md5
 group 2
 lifetime 86400
crypto isakmp nat-traversal 30
telnet 10.2.2.0 255.255.255.0 inside
telnet timeout 30
ssh timeout 5
console timeout 0

threat-detection basic-threat
threat-detection statistics access-list
!
class-map inspection_default
 match default-inspection-traffic
!
!
policy-map type inspect dns preset_dns_map
 parameters
  message-length maximum 512
policy-map global_policy
 class inspection_default
  inspect dns preset_dns_map
  inspect ftp
  inspect h323 h225
  inspect h323 ras
  inspect rsh
  inspect rtsp
  inspect esmtp
  inspect sqlnet
  inspect skinny
  inspect sunrpc
  inspect xdmcp
  inspect sip
  inspect netbios
  inspect tftp
!
service-policy global_policy global
group-policy ABC123 internal
group-policy ABC123 attributes
 wins-server value 10.2.2.253 10.2.2.250
 dns-server value 10.2.2.253 10.2.2.250
 vpn-tunnel-protocol IPSec
 split-tunnel-policy tunnelspecified
 split-tunnel-network-list value ABC123_splitTunnelAcl
 default-domain value ABC123.local
group-policy DfltGrpPolicy attributes
 vpn-tunnel-protocol IPSec webvpn
tunnel-group ABC123 type remote-access
tunnel-group ABC123 general-attributes
 address-pool vpn-client-addresspool
 authentication-server-group RADIUS
 default-group-policy ABC123
tunnel-group ABC123 ipsec-attributes
 pre-shared-key *
prompt hostname context
Cryptochecksum:a005049f9a16d80d9438b316954886e5
: end

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Asked On
2009-11-05 at 11:04:00ID24875613
Topics

Virtual Private Networking (VPN)

,

Networking Hardware Firewalls

,

Cisco PIX Firewall

Participating Experts
2
Points
0
Comments
6

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Answers

 

by: tapkePosted on 2009-11-05 at 11:09:46ID: 25752781

Have you tried ticking the "Save this password in your password list? :-)

 

by: oalvaPosted on 2009-11-05 at 11:24:14ID: 25752941

on your internal network do you have a route back to 10.0.3.x

 

by: vrodderPosted on 2009-11-05 at 11:47:46ID: 25753162

This ASA will be serving as our router, and is replacing a PIX 506E. There is no static route in the PIX config for the 10.0.3.x network. Should I add one to the ASA config?

 

by: vrodderPosted on 2009-11-05 at 12:54:41ID: 25753896

Just to test the routing theory, I created a new address pool in the same IP range as the internal network (10.2.2.x), and I was still not able to ping through the tunnel.

 

by: vrodderPosted on 2009-11-05 at 13:42:48ID: 25754362

Okay. Nevermind. It turned out to be something stupid.

The ASA and the PIX are both on the same network with different IPs. The hosts I was trying to ping on the internal network still had their gateway set to the PIX. So the ping was getting to the internal network, but the reply couldn't find its way back to the ASA.

I took one host and set the gateway IP to the ASA and low-and-behold, I could ping it through the VPN.

 

by: oalvaPosted on 2009-11-05 at 13:54:02ID: 25754474

glad to hear it

20120131-EE-VQP-002

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