06-29-2011 02:42 PM
I am attempting to set up split tunneling on a client-to-site VPN connection from an ASA 5505 using 8.2(1). Right now, clients can access the internet but cannot access local network resources such as a network printer.
The situation is this: Clients access the remote site to access a server via RDC on Mac OS X. They need to print from this server, and directly connected printers will work. Unfortunately, every time we try to print to the network printer on the local network, it shows "Searching for printer" and the job gets stuck in the queue. I know this is not a Mac issue since it also happens on Windows XP and Windows 7, and the job does reach the printer on the PC itself. This is indicative of the local network printer being inaccessible while connected to the VPN.
While using directly connected printers is a temporary solution, it is also expensive since cartridges need to be purchased for each one. Can anyone help me troubleshoot what I am missing in the configuration for split tunneling or if another issue exists? See config below. Thanks for any help.
: Saved
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X.XASA Version 8.2(1)
!
hostname mas
domain-name XXXXXnet.net
enable password XXXX encrypted
passwd XXXX encrypted
names
!
interface Vlan1
nameif inside
security-level 100
ip address 192.168.9.1 255.255.255.0
!
interface Vlan2
nameif outside
security-level 0
ip address X.X.69.6 255.255.255.248
!
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
clock timezone PST -8
clock summer-time PDT recurring
dns server-group DefaultDNS
domain-name aksitnet.net
access-list inside_nat0_outbound extended permit ip any 192.168.9.0 255.255.255.128
access-list splitanyconnect extended permit ip host 192.168.9.1 192.168.9.0 255.255.255.0
access-list splitanyconnect extended permit ip host 192.168.9.203 192.168.9.0 255.255.255.0
access-list splitanyconnect extended permit ip host 192.168.9.205 192.168.9.0 255.255.255.0
access-list splitanyconnect extended permit ip host 192.168.9.206 192.168.9.0 255.255.255.0
access-list splitanyconnect extended permit ip host 192.168.9.207 192.168.9.0 255.255.255.0
access-list splitanyconnect extended permit ip host 192.168.9.204 192.168.9.0 255.255.255.0
pager lines 24
logging asdm informational
mtu inside 1492
mtu outside 1492
ip local pool ipsecvpnpool01 192.168.9.60-192.168.9.99 mask 255.255.255.0
icmp unreachable rate-limit 1 burst-size 1
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
route outside 0.0.0.0 0.0.0.0 X.X.69.1 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
timeout tcp-proxy-reassembly 0:01:00
dynamic-access-policy-record DfltAccessPolicy
http server enable
http 192.168.9.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart
crypto ipsec transform-set ESP-3DES-SHA esp-3des esp-sha-hmac
crypto ipsec transform-set ESP-AES-128-SHA esp-aes esp-sha-hmac
crypto ipsec transform-set ESP-AES-256-MD5 esp-aes-256 esp-md5-hmac
crypto ipsec transform-set ESP-DES-MD5 esp-des esp-md5-hmac
crypto ipsec transform-set ESP-AES-256-SHA esp-aes-256 esp-sha-hmac
crypto ipsec transform-set ESP-AES-128-MD5 esp-aes esp-md5-hmac
crypto ipsec transform-set ESP-DES-SHA esp-des esp-sha-hmac
crypto ipsec transform-set ESP-AES-192-MD5 esp-aes-192 esp-md5-hmac
crypto ipsec transform-set ESP-AES-192-SHA esp-aes-192 esp-sha-hmac
crypto ipsec transform-set ESP-3DES-MD5 esp-3des esp-md5-hmac
crypto ipsec security-association lifetime seconds 28800
crypto ipsec security-association lifetime kilobytes 4608000
crypto dynamic-map SYSTEM_DEFAULT_CRYPTO_MAP 65535 set pfs group1
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 3des
hash sha
group 2
lifetime 86400
crypto isakmp nat-traversal 21
telnet timeout 5
ssh 192.168.9.0 255.255.255.0 inside
ssh timeout 5
ssh version 2
console timeout 0
management-access inside
dhcpd auto_config outside
!
dhcpd address 192.168.9.11-192.168.9.59 inside
dhcpd enable inside
!
threat-detection basic-threat
threat-detection statistics access-list
no threat-detection statistics tcp-intercept
ntp server X.X.69.5 source outside prefer
webvpn
enable outside
svc image disk0:/anyconnect-win-2.3.0254-k9.pkg 1
svc image disk0:/anyconnect-macosx-i386-2.3.0254-k9.pkg 2
svc enable
tunnel-group-list enable
group-policy DfltGrpPolicy attributes
vpn-tunnel-protocol IPSec l2tp-ipsec svc webvpn
group-policy anyconnect internal
group-policy anyconnect attributes
split-tunnel-policy tunnelspecified
split-tunnel-network-list value splitanyconnect
username ttelpirt password XXXX encrypted privilege 15
username jjenkins password XXXX encrypted privilege 15
username hheyser password XXXX encrypted privilege 1
username wgudim password XXXX encrypted privilege 1
username aarredondo password XXXX encrypted privilege 1
username crios password XXXX encrypted privilege 1
username sbrown password XXXX encrypted privilege 1
username egomes password XXXX encrypted privilege 1
username ckarris password XXXX encrypted privilege 1
username mtriplett password XXXX encrypted privilege 15
username icolin password XXXX encrypted privilege 1
username mgrina password XXXX encrypted privilege 1
username ichristner password XXXX encrypted privilege 1
username nthomas password XXXX encrypted privilege 1
username akovac password XXXX encrypted privilege 1
username martind password XXX encrypted privilege 1
username lburton password XXXX encrypted privilege 1
tunnel-group ipsecvpngroup01 type remote-access
tunnel-group ipsecvpngroup01 general-attributes
address-pool ipsecvpnpool01
tunnel-group ipsecvpngroup01 ipsec-attributes
pre-shared-key *
tunnel-group anyconnect_mas01 type remote-access
tunnel-group anyconnect_mas01 general-attributes
address-pool ipsecvpnpool01
default-group-policy anyconnect
tunnel-group anyconnect_mas01 webvpn-attributes
group-alias anyconnect_mas01 enable
!
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
smtp-server X.X.69.4
prompt hostname context
Cryptochecksum:9dd089013bd6522ee60230e7cb9667af
: end
no asdm history enable
06-29-2011 05:50 PM
Hi,
First of all, never use the same subnet for internal IPs & remote vpn client pool. You can make the things work, but will kill your time. As your internal IP 192.168.9.x , use vpn pool - 192.168.10.0 etc.
change your nat 0 ACL to cover your internal subnet (255.255.255.0) --> to new vpn pool.
If I remember correct, you can use standard ACL statement for your internal subnet in 'splitanyconnect '. No need to use extended.
Also, users try to access internal resources using 'ip or hostnames? if hostnames, you need to assign atleast one internal DNS for the remote vpn users under 'group policy'.
hth
MS
06-30-2011 05:04 AM
Thank you, mvsheik123, for the reply.
I had a feeling that using the same DHCP might be an issue. Unfortunately, I didn't set this up originally and I would have to go through layers of red tape to get approval to use a new subnet. Are there any changes I can make while keeping the IP addresses that are already used to make this work?
The reason I'm using an extended ACL list is because the VPN users need only access those IPs that are listed. All other traffic destined out should not be marked interesting (hoping for an implicit deny, but not necessary). I had also tried switching it to a standard ACL statement that covered the entire subnet range 192.168.9.x/24, with no luck.
I set users to access internal resources by IP address only, so DNS is not an issue at all.
06-30-2011 08:48 AM
Hi,
I would prefer to change the IPs.. but it is completely upto you. Leaving everything intact.. you can try the below..
1. Based on your internal network infrastructure, add static route to your internal switch/router pointing to asa inside interface for each remote VPN assigned IP.
(or of you can change pool range to .65 to .94 you can use single subnet 192.168.9.64/255.255.255.224).
2. Add the static route on ASA for each remote VPN assigned IP pointing to your gateway.
3. Make sure when you connect using VPN, your client downloads the split tunnel ip list.
Try to initiate the connection and if that does not work, initiate a 'ping' from inside server to vpn client and on ASA enable 'debug icmp trace'' and see where the packets being dropped.
hth
MS
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