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8.6

Can't ping DNS server with VPN connection but can resolve DNS names and mail proxy setup

Asked by DSM_22 in Virtual Private Networking (VPN), IPSec Security Protocol, Cisco PIX Firewall

Tags: Cisco, ASA, 5505

I setup a VPN IPSec profile using the ASDM wizard.  Everything works fine, I can login and see the internal network, ping internal IP addresses (192.168.0.x) as well as ping off of a DNS name but I can't ping the actual DNS server using the IP address or DNS name.  I need to be figure out why this is because the DNS server also houses some important files that my mobile users need to access.  I took a look through all of the settings in the ASDM and through the console and couldn't find anything that would be causing this to happen.  I would also like to setup the mail proxy option as my users need to access an off-site POP3/SMTP server hosted by a provider but they can't access the server unless on our internet connection.

Here is the contents of my current running config -- please help!

ASA Version 8.0(3)6
!
hostname ciscoasa
domain-name DOMAINNAME.local
enable password ********* encrypted
passwd ********* encrypted
names
!
interface Vlan1
 nameif inside
 security-level 100
 ip address 192.168.0.1 255.255.255.0
!
interface Vlan2
 mac-address 0006.255a.6688
 nameif outside
 security-level 0
 ip address dhcp setroute
!
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
!
ftp mode passive
dns domain-lookup inside
dns server-group DefaultDNS
 name-server 192.168.0.250
 domain-name DOMAINNAME.local
access-list outside_access_in extended permit tcp any host 14*.***.*8*.1*6 eq 55
66
access-list outside_access_in extended permit tcp any host 14*.***.*8*.1*6 eq 84
15
access-list outside_access_in extended permit tcp any host 14*.***.*8*.1*6 eq 41
25
access-list DFTTunnel_splitTunnelAcl_1 standard permit any
access-list inside_nat0_outbound extended permit ip any 192.168.3.0 255.255.255.
0
access-list inside_nat0_outbound extended permit ip any 192.168.3.96 255.255.255
.224
access-list DFTTunnel_splitTunnelAcl standard permit 192.168.0.0 255.255.255.0
pager lines 24
logging enable
logging asdm informational
mtu inside 1500
mtu outside 1500
ip local pool DFTTunnelIPScope 192.168.3.100-192.168.3.120 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
static (inside,outside) tcp interface 5566 192.168.0.6 5566 netmask 255.255.255.
255
static (inside,outside) tcp interface 8415 192.168.0.247 8415 netmask 255.255.25
5.255
static (inside,outside) tcp interface 4125 192.168.0.12 4125 netmask 255.255.255
.255
access-group outside_access_in in interface outside
route outside 0.0.0.0 0.0.0.0 142.179.184.1 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 sip-provisional-media 0:02:00 uauth 0:05:00 absolute
dynamic-access-policy-record DfltAccessPolicy
http server enable
http 192.168.0.0 255.255.255.0 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-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-3DES-MD5 esp-3des 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-SHA esp-3des esp-sha-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 map inside_map 65535 ipsec-isakmp dynamic SYSTEM_DEFAULT_CRYPTO_MAP
crypto map inside_map interface inside
crypto isakmp enable inside
crypto isakmp enable outside
crypto isakmp policy 10
 authentication pre-share
 encryption 3des
 hash sha
 group 2
 lifetime 86400
telnet timeout 5
ssh timeout 5
console timeout 0
dhcpd auto_config outside
!

threat-detection basic-threat
threat-detection statistics
group-policy DfltGrpPolicy attributes
 vpn-tunnel-protocol IPSec webvpn
group-policy DFTTunnel internal
group-policy DFTTunnel attributes
 wins-server value 192.168.0.250
 dns-server value 192.168.0.250
 vpn-tunnel-protocol IPSec
 split-tunnel-policy tunnelspecified
 split-tunnel-network-list value DFTTunnel_splitTunnelAcl_1
 default-domain value ChampionPetFoods.local
username test1 password ********* encrypted privilege 0
username test1 attributes
 service-type remote-access
username test2 password********* encrypted privilege 15
username test3 password ******** encrypted privilege 0
tunnel-group DFTTunnel type remote-access
tunnel-group DFTTunnel general-attributes
 address-pool DFTTunnelIPScope
 default-group-policy DFTTunnel
tunnel-group DFTTunnel ipsec-attributes
 pre-shared-key *
!
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 esmtp
  inspect sqlnet
  inspect skinny
  inspect sunrpc
  inspect xdmcp
  inspect sip
  inspect netbios
  inspect tftp
  inspect icmp
!
service-policy global_policy global
imap4s
 no outstanding
 default-group-policy DfltGrpPolicy
pop3s
 port 110
 no outstanding
 default-group-policy DfltGrpPolicy
smtps
 port 80
 no outstanding
 default-group-policy DfltGrpPolicy
 authentication mailhost
prompt hostname context
Cryptochecksum:76d276fb62a71b429eaa49725144f146
: end
[+][-]09/04/08 08:37 AM, ID: 22388786Accepted Solution

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About this solution

Zones: Virtual Private Networking (VPN), IPSec Security Protocol, Cisco PIX Firewall
Tags: Cisco, ASA, 5505
Sign Up Now!
Solution Provided By: Voltz-dk
Participating Experts: 1
Solution Grade: A
 
[+][-]09/03/08 01:52 PM, ID: 22381855Author Comment

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