08-06-2011 04:26 AM - edited 02-21-2020 05:30 PM
Hi,
I am new for Cisco ASA.
I have configure L2TP/IPSEC (Windows vpn). I am using window vpn client. VPN is establish successfully then i took remote of pc 10.0.0.5 and now i m trying to access internet but i didnt get access it.
Please suggest me what should i configure for it.
08-08-2011 04:46 AM
Workaround 1:
>> While creating L2TP connection profile on the PC, make sure the below setting is configured:
L2TP connection Properties >> Networking > Internet Protocol (TCP/IP) > Advanced > General:
Uncheck “Use default gateway on remote network”
>> With this a route (for the class to which the vpn pool subnet belongs) gets downloaded to the client. You may configure Split-Tunneling too with this setting, although it might take about 20 seconds for them to get downloaded in to the PC’s routing table)
Workaround 2:
If you prefer having all the L2TP users come all the way to ASA (full tunneling), make sure you configure U-Turning on the outside interface:
Commands required:
Same-security-traffic permit intra-interface
NAT Commands:
nat (outside) 1
( you do not have to put the “outside” keyword at the end)
! i would expect this to be already configured
! global ( outside) 1 interface/public_ip
Regards,
Praveen
08-08-2011 11:07 PM
Hi Praveena,
1) As per your suggestion i have uncheck "use default gateway on remote network" check box.
but still my problem is not solved.
2) " Same-security-traffic permit intra-interface" command is already configured.
See my vpn connection is establish i also access remote pc but i can not access internet on remote pc...
When i click on L2TP connection properties i get the default gateway 10.0.0.1 and dns is 10.0.0.4 but i am not able to access internet...
08-22-2011 10:57 PM
Hi Nikhil,
Sorry for the delay, if you are still looking at this, the only thing that you seem to have missed from my last response is:
NAT config on outside interface
nat (outside) 1
( you do not have to put the “outside” keyword at the end)
! i would expect the following to be already configured
! global ( outside) 1 interface/public_ip
Regards,
Praveen
08-22-2011 11:25 PM
Thanks for reply Praveena,
I have done some changes in my configuration... but problem is still pending....
Please check latest configuration and suggest me changes....
Regards,
Nikhil
ASA Version 8.2(5)
!
hostname asa
domain-name digital.net
names
name 121.241.66.217 Router-Outside description router ip
name 10.0.0.4 dc1-int description dc1-int
dns-guard
!
interface Ethernet0/0
switchport access vlan 337
switchport trunk allowed vlan 337
speed 100
duplex full
interface Ethernet0/7
switchport access vlan 20
!
interface Vlan1
nameif inside
security-level 100
ip address 10.0.0.1 255.255.255.0
!
interface Vlan337
nameif outside
security-level 0
ip address Router-Outside 255.255.255.252
!
boot system disk0:/asa825-k8.bin
ftp mode passive
clock timezone IST 5 30
dns domain-lookup inside
dns server-group DefaultDNS
name-server dc1-int
name-server 1.2.3.4
name-server 101.101.101.5
name-server 101.101.101.6
domain-name spheregen.net
object-group protocol TCPUDP
protocol-object udp
protocol-object tcp
port-object eq 587
object-group service TFSPorts tcp
port-object eq 8080
port-object eq www
object-group service RDP tcp
port-object eq 3389
access-list inside_access_out extended permit gre any any
access-list inside_access_out extended permit tcp any any eq pptp
access-list outside_access_in extended permit gre any any
access-list outside_access_in extended permit tcp any any eq pptp
access-list outside_access_in extended permit ip 10.0.0.0 255.255.255.0 any
access-list outside_access_out extended permit gre any any
access-list outside_access_out extended permit tcp any any eq pptp
access-list outside_access_out extended permit ip interface outside any
access-list inside_access_in extended permit ip 10.0.0.0 255.255.255.0 any
access-list inside_access_in extended permit tcp any any eq pptp
access-list inside_access_in extended permit gre any any
access-list inside_nat0_outbound extended permit ip any 192.168.50.0 255.255.255.192
access-list Split_tunnel_list remark The corporate network behind asa
access-list Split_tunnel_list standard permit 192.168.50.0 255.255.255.192
pager lines 24
logging enable
logging asdm warnings
mtu inside 1500
mtu DMZ 1500
mtu outside 1500
ip local pool vpn-pool 192.168.50.1-192.168.50.60 mask 255.255.255.0
ip verify reverse-path interface inside
ip verify reverse-path interface outside
no failover
icmp unreachable rate-limit 1 burst-size 1
asdm image disk0:/asdm-643.bin
asdm history enable
arp timeout 14400
nat-control
global (outside) 1 interface
nat (inside) 0 access-list inside_nat0_outbound
nat (inside) 1 10.0.0.0 255.255.255.0
access-group inside_access_in in interface inside
access-group inside_access_out out interface inside
access-group outside_access_in in interface outside
access-group outside_access_out out interface outside
route outside 0.0.0.0 0.0.0.0 1.2.6.2 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
timeout floating-conn 0:00:00
dynamic-access-policy-record DfltAccessPolicy
aaa-server TEST_AD protocol radius
aaa-server TEST_AD (inside) host Sg-dc1-int
key *****
radius-common-pw *****
http server enable
http 10.0.0.0 255.255.255.0 inside
http 114.143.102.2 255.255.255.255 outside
http Router-Outside 255.255.255.255 outside
http 121.241.73.162 255.255.255.255 outside
http 61.12.123.178 255.255.255.255 outside
http 76.184.65.194 255.255.255.255 outside
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart
sysopt connection preserve-vpn-flows
sysopt noproxyarp inside
sysopt noproxyarp outside
crypto ipsec transform-set ESP-3DES-SHA esp-3des esp-sha-hmac
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 trans esp-3des esp-sha-hmac
crypto ipsec transform-set trans mode transport
crypto ipsec security-association lifetime seconds 28800
crypto ipsec security-association lifetime kilobytes 4608000
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 dynamic-map dyno 10 set transform-set trans
crypto map outside_map 65535 ipsec-isakmp dynamic SYSTEM_DEFAULT_CRYPTO_MAP
crypto map vpn 20 ipsec-isakmp dynamic dyno
crypto map vpn 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 1500
telnet timeout 5
ssh timeout 5
ssh version 2
console timeout 0
l2tp tunnel hello 100
dhcpd dns Sg-dc1-int 10.0.0.2 interface inside
!
dhcpd dns Sg-dc1-int 101.101.101.5 interface outside
!
dhcprelay server 10.0.0.2 inside
dhcprelay server dc1-int inside
threat-detection basic-threat
threat-detection statistics host
threat-detection statistics access-list
threat-detection statistics tcp-intercept rate-interval 30 burst-rate 400 average-rate 200
webvpn
enable outside
group-policy DfltGrpPolicy attributes
dns-server value 10.0.0.4
vpn-idle-timeout none
vpn-tunnel-protocol l2tp-ipsec svc webvpn
default-domain value spheregen.net
group-policy sales_policy internal
group-policy sales_policy attributes
wins-server none
vpn-tunnel-protocol l2tp-ipsec
split-tunnel-policy tunnelall
default-domain value spheregen.net
username nikhil password WKR4E1qTrDvwWKXqDo/bcQ== nt-encrypted privilege 15
username aftab.ansari password VY477ELaRYMPkrf9pes1IA== nt-encrypted
tunnel-group DefaultRAGroup general-attributes
address-pool vpn-pool
authentication-server-group TEST_AD
default-group-policy sales_policy
tunnel-group DefaultRAGroup ipsec-attributes
pre-shared-key *****
isakmp keepalive threshold 3600 retry 2
tunnel-group DefaultRAGroup ppp-attributes
authentication ms-chap-v2
tunnel-group DefaultWEBVPNGroup general-attributes
authentication-server-group TEST_AD
!
class-map Unblock
match access-list inside_mpc_1
class-map type inspect http match-all BlockDomainsClass
match request header host regex class DomainBlockList
class-map inspection_default
match default-inspection-traffic
class-map type inspect http match-all AppHeaderClass
match response header regex contenttype regex applicationheader
class-map httptraffic
match access-list inside_mpc
!
!
policy-map type inspect dns preset_dns_map
parameters
message-length maximum client auto
message-length maximum 512
policy-map type inspect http http_inspection_policy
parameters
protocol-violation action drop-connection
match request method connect
drop-connection log
class AppHeaderClass
drop-connection log
class BlockDomainsClass
reset log
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
inspect ip-options
inspect pptp
policy-map inside-policy
class Unblock
inspect http
class httptraffic
inspect http http_inspection_policy
!
service-policy global_policy global
service-policy inside-policy interface inside
Cryptochecksum:27a910363710815fd889c9cc72a3d173
: end
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