ASA VPN Users Internet access

mrbnetworks · ‎09-14-2010

Hello,

I am configuring an ASA 5505 for remote users to access a network. VPN users can authenticate against the domain controller, connect and obtain a vaild IP. The local DNS server is resolving domain names for the users as well and the remote users can access all systems behind the ASA. Users are not able to access the internet once connected.

The config is posted below does anyone see anything funky?

: Saved
:
ASA Version 7.2(4) 
!
hostname ciscoasa
domain-name domain.local
enable password 8Ry2YjIyt7RRXU24 encrypted
passwd 2KFQnbNIdI.2KYOU encrypted
names
name 192.168.21.0 RemoteUsersSubnet description VPN User Subnet
name 192.168.20.2 domaincontroller description Domain Controller
!
interface Vlan1
 nameif inside
 security-level 100
 ip address 192.168.20.1 255.255.255.0 
!
interface Vlan2
 nameif outside
 security-level 0
 ip address XXX.XXX.XXX.XXX 255.255.255.252 
!
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
!
banner login 
ftp mode passive
dns server-group DefaultDNS
 domain-name DOMAIN
same-security-traffic permit intra-interface
access-list inside_access_in extended permit ip 192.168.20.0 255.255.255.0 any 
access-list inside_access_in extended permit ip RemoteUsersSubnet 255.255.255.0 any 
access-list outside_access_in extended permit ip RemoteUsersSubnet 255.255.255.0 any 
access-list TestACL standard permit host 0.0.0.0 
access-list inside_nat0_outbound extended permit ip any RemoteUsersSubnet 255.255.255.0 
pager lines 24
logging enable
logging asdm informational
mtu inside 1500
mtu outside 1500
ip local pool RemoteUsers 192.168.21.10-192.168.21.40 mask 255.255.255.0
icmp unreachable rate-limit 1 burst-size 1
asdm image disk0:/asdm-524.bin
asdm history enable
arp timeout 14400
global (outside) 1 interface
nat (inside) 0 access-list inside_nat0_outbound
nat (inside) 1 192.168.20.0 255.255.255.0
nat (outside) 0 RemoteUsersSubnet 255.255.255.0
access-group inside_access_in in interface inside
access-group outside_access_in in interface outside
route outside 0.0.0.0 0.0.0.0 XXX.XXX.XXX.XXX 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
aaa-server DOMAIN protocol nt
aaa-server DOMAIN (inside) host DOMAINCONTROLLER
 nt-auth-domain-controller 192.168.20.2
aaa authentication ssh console LOCAL 
http server enable
http XXX.XXX.XXX.XXX 255.255.255.255 outside
http RemoteUsersSubnet 255.255.255.0 inside
http 192.168.20.0 255.255.255.0 inside
http 192.168.1.0 255.255.255.0 inside
http XXX.XXX.XXX.XXX 255.255.255.255 outside
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart
crypto ipsec transform-set ESP-3DES-MD5 esp-3des esp-md5-hmac 
crypto ipsec transform-set ESP-3DES-SHA esp-3des esp-sha-hmac 
crypto dynamic-map outside_dyn_map 20 set pfs group1
crypto dynamic-map outside_dyn_map 20 set transform-set ESP-3DES-SHA
crypto dynamic-map outside_dyn_map 40 set pfs group1
crypto dynamic-map outside_dyn_map 40 set transform-set ESP-3DES-SHA
crypto map outside_map 65535 ipsec-isakmp dynamic outside_dyn_map
crypto map outside_map interface outside
crypto isakmp enable outside
crypto isakmp policy 10
 authentication pre-share
 encryption 3des
 hash sha
 group 2
 lifetime 86400
crypto isakmp nat-traversal  20
telnet timeout 5
ssh XXX.XXX.XXX.XXX 255.255.255.255 outside
ssh timeout 5
console timeout 0
dhcpd auto_config outside
!

group-policy DfltGrpPolicy attributes
 banner none
 wins-server value 192.168.20.2
 dns-server value 192.168.20.2
 dhcp-network-scope none
 vpn-access-hours none
 vpn-simultaneous-logins 3
 vpn-idle-timeout 30
 vpn-session-timeout none
 vpn-filter none
 vpn-tunnel-protocol IPSec l2tp-ipsec webvpn
 password-storage disable
 ip-comp disable
 re-xauth disable
 group-lock none
 pfs disable
 ipsec-udp disable
 ipsec-udp-port 10000
 split-tunnel-policy tunnelall
 split-tunnel-network-list none
 default-domain none
 split-dns none
 intercept-dhcp 255.255.255.255 disable
 secure-unit-authentication disable
 user-authentication disable
 user-authentication-idle-timeout 30
 ip-phone-bypass disable
 leap-bypass disable
 nem disable
 backup-servers keep-client-config
 msie-proxy server none
 msie-proxy method no-modify
 msie-proxy except-list none
 msie-proxy local-bypass disable
 nac disable
 nac-sq-period 300
 nac-reval-period 36000
 nac-default-acl none
 address-pools none
 smartcard-removal-disconnect enable
 client-firewall none
 client-access-rule none
 webvpn
  functions url-entry
  html-content-filter none
  homepage none
  keep-alive-ignore 4
  http-comp gzip
  filter none
  url-list none
  customization value DfltCustomization
  port-forward none
  port-forward-name value Application Access
  sso-server none
  deny-message value Login was successful, but because certain criteria have not been met or due to some specific group policy, you do not have permission to use any of the VPN features. Contact your IT administrator for more information
  svc none
  svc keep-installer installed
  svc keepalive none
  svc rekey time none
  svc rekey method none
  svc dpd-interval client none
  svc dpd-interval gateway none
  svc compression deflate
group-policy RemoteUsers internal
group-policy RemoteUsers attributes
 banner value 
 wins-server value 192.168.20.2
 dns-server value 192.168.20.2
 vpn-tunnel-protocol IPSec 
 password-storage enable
 ipsec-udp enable
 split-tunnel-policy excludespecified
 split-tunnel-network-list value TestACL
 default-domain value DEFAULTDOMAIN
 backup-servers clear-client-config
 address-pools value RemoteUsers
username ADMIN password FaKbw/.bzwrZp.L3 encrypted privilege 15
tunnel-group DefaultRAGroup general-attributes
 dhcp-server DOMAINCONTROLLER
tunnel-group DefaultRAGroup ipsec-attributes
 pre-shared-key *
tunnel-group RemoteUsers type ipsec-ra
tunnel-group RemoteUsers general-attributes
 address-pool RemoteUsers
 authentication-server-group DOMAIN LOCAL
 default-group-policy RemoteUsers
tunnel-group RemoteUsers 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 rtsp 
  inspect esmtp 
  inspect sqlnet 
  inspect skinny 
  inspect sunrpc 
  inspect xdmcp 
  inspect sip 
  inspect netbios 
  inspect tftp 
!
service-policy global_policy global
prompt hostname context 
Cryptochecksum:df34902825b1b9836c79d5a907ef124c
: end
asdm image disk0:/asdm-524.bin
asdm location DOMAINCONTROLLER 255.255.255.255 inside
asdm location 0.0.0.0 255.255.255.255 inside
asdm history enable

Asim Malik · ‎09-14-2010

which group policy you are using,can you confgure split tunnel as per

http://www.cisco.com/en/US/products/ps6120/products_configuration_example09186a0080702999.shtml

mrbnetworks · ‎09-14-2010

Thanks for the quick reply. I am using the RemoteUsers policy group and I was able to setup split tunnels and maintain internet connectivty. However, I am unable to ping or access the ASA device as a remote VPN user and would like to tunnel all user traffic through the VPN. Any thoughts?