09-14-2011 12:59 AM
Dear All,
I have two ASA 5510 with site-to-site VPN, I can forward all Internet traffic to the central(HQ) site,
how do I setup split tunneling for access Campus LAN (192.168.2.0/24) from LAN2.
Thank you in advance.
Best regards,
Zoltan
Solved! Go to Solution.
09-14-2011 05:21 AM
You can have "deny" statement on your crypto ACL and it will bypass the traffic to be encrypted towards the site-to-site VPN tunnel.
For ASA 1:
access-list 100 extended permit ip 10.10.16.192 255.255.255.192 10.10.16.128 255.255.255.192
access-list 100 extended permit ip 10.0.0.0 255.0.0.0 10.10.16.128 255.255.255.192
access-list 100 extended deny ip 192.168.2.0 255.255.255.0 10.10.16.128 255.255.255.192
access-list 100 extended permit ip any 10.10.16.128 255.255.255.192
For ASA 2:
access-list 100 extended permit ip 10.10.16.128 255.255.255.192 10.10.16.192 255.255.255.192
access-list 100 extended permit ip 10.10.16.128 255.255.255.192 10.0.0.0 255.0.0.0
access-list 100 extended deny ip 10.10.16.128 255.255.255.192 192.168.2.0 255.255.255.0
access-list 100 extended permit ip 10.10.16.128 255.255.255.192 any
Hope that helps.
09-14-2011 05:21 AM
You can have "deny" statement on your crypto ACL and it will bypass the traffic to be encrypted towards the site-to-site VPN tunnel.
For ASA 1:
access-list 100 extended permit ip 10.10.16.192 255.255.255.192 10.10.16.128 255.255.255.192
access-list 100 extended permit ip 10.0.0.0 255.0.0.0 10.10.16.128 255.255.255.192
access-list 100 extended deny ip 192.168.2.0 255.255.255.0 10.10.16.128 255.255.255.192
access-list 100 extended permit ip any 10.10.16.128 255.255.255.192
For ASA 2:
access-list 100 extended permit ip 10.10.16.128 255.255.255.192 10.10.16.192 255.255.255.192
access-list 100 extended permit ip 10.10.16.128 255.255.255.192 10.0.0.0 255.0.0.0
access-list 100 extended deny ip 10.10.16.128 255.255.255.192 192.168.2.0 255.255.255.0
access-list 100 extended permit ip 10.10.16.128 255.255.255.192 any
Hope that helps.
09-14-2011 07:18 AM
I changed the ACL, but I still can not access Campus LAN from LAN2.
09-14-2011 10:59 PM
Does Campus LAN have route back towards LAN2 subnet? It needs to be routed back towards ASA2 outside interface.
09-15-2011 12:54 AM
Yes, this was a problem!
Thank you!
05-28-2013 12:01 PM
Does this configuration work if the Internet connection was on ASA1? I mean, the users of 10.10.16.128/26 be NAT'd on ASA1 in order to access Internet?
Thanks
10-10-2011 04:38 AM
Hi,
I am having something similar issue that we are using site to site vpn, in one of the remote site they are unable to browse internet in a normal way, but if they connect through browser proxy then they get internet but the same time they cannot access to the vpn private network.. I guess I need to tweak something on the configuration level.,
The Local Network: 10.4.131.0/24
VPN: 172.16.0.0/16
---
ASA Version 8.2(1)
!
hostname ciscoasa
domain-name s5ame.com
enable password NuLKvvWGg.x9HEKO encrypted
passwd 2KFQnbNIdI.2KYOU encrypted
names
!
interface Vlan1
nameif inside
security-level 100
ip address 10.4.131.254 255.255.255.0
!
interface Vlan2
nameif outside
security-level 0
pppoe client vpdn group moedng1
ip address pppoe 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
!
boot system disk0:/asa8-2.bin
ftp mode passive
clock timezone GST 4
dns domain-lookup inside
dns domain-lookup outside
dns server-group DefaultDNS
name-server 172.16.2.20
domain-name s5ame.com
access-list inside_access extended permit ip any any
access-list outside_1_cryptomap extended permit ip 10.4.131.0 255.255.255.0 172.16.0.0 25
5.255.0.0
access-list inside_nat0_outbound extended permit ip 10.4.131.0 255.255.255.0 172.16.0.0 2
55.255.0.0
pager lines 24
logging enable
logging asdm informational
mtu inside 1500
mtu outside 1452
icmp unreachable rate-limit 1 burst-size 1
asdm image disk0:/asdm-631.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 inside_access in interface inside
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 192.168.10.0 255.255.255.0 inside
http 10.4.131.0 255.255.255.0 inside
http 0.0.0.0 0.0.0.0 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 security-association lifetime seconds 28800
crypto ipsec security-association lifetime kilobytes 4608000
crypto map outside_map 1 match address outside_1_cryptomap
crypto map outside_map 1 set peer 195.229.214.33
crypto map outside_map 1 set transform-set ESP-3DES-SHA
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
telnet 10.4.131.0 255.255.255.0 inside
telnet 0.0.0.0 0.0.0.0 inside
telnet timeout 5
ssh timeout 5
console timeout 0
management-access inside
vpdn group moedng1 request dialout pppoe
vpdn group moedng1 localname moedng1
vpdn group moedng1 ppp authentication pap
vpdn username moedng1 password ********* store-local
dhcpd auto_config outside
!
dhcpd address 10.4.131.50-10.4.131.250 inside
dhcpd dns 172.16.2.20 interface inside
dhcpd enable inside
!
threat-detection basic-threat
threat-detection statistics access-list
no threat-detection statistics tcp-intercept
webvpn
username admin password 7KKG/zg/Wo8c.YfN encrypted privilege 15
username cisco password 3USUcOPFUiMCO4Jk encrypted
tunnel-group 195.229.214.xx type ipsec-l2l
tunnel-group 195.229.214.xx 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:8afd258803311449fb4476babd7e8030
: end
Please help me to sort out this issue!
Regards,
10-10-2011 04:54 AM
I guess this site that you have posted the configuration is working fine, right?
Can you post the remote site configuration where the issue is.
10-10-2011 05:41 AM
thats the configuration file that i am having the issue now. however I have noticed one more thing that its not resolving dns for the private network servers(that is we have an application server that hosted in HQ and I am unable to access this server from the remote site, but I can access through the ip address)
10-16-2011 12:32 AM
In that case, you would need to specify your internal dns server on your actual host so it resolves to internal ip address. If accessing via ip address works, that means there is no issue with the VPN.
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