02-17-2013 04:10 PM
Hi,
I am a newbie on Cisco products. I configured a Cisco ASA 5505 firewall with VPN. However, I can not access to the web after I connected to the remote IPSec VPN. I also failed to connect to the webs using IP. But I can connect to internal servers in the office without any problems.
Below is my configuration, can someone please help? Many Thanks
ASA Version 8.2(5)
!
hostname asa
domain-name xxxxxxxxx.com
enable password xxxxxxxxxxx encrypted
passwd xxxxxxxxxxx encrypted
names
!
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
!
interface Vlan1
nameif inside
security-level 100
ip address 192.168.1.1 255.255.255.0
!
interface Vlan2
nameif outside
security-level 0
ip address dhcp setroute
!
ftp mode passive
clock timezone zone -8
clock summer-time PDT recurring 1 Sun Apr 2:00 last Sun Oct 2:00
dns domain-lookup inside
dns server-group DefaultDNS
name-server 107.204.233.222
name-server 192.168.1.3
domain-name xxxxxxxxx.com
access-list inside_nat0_outbound extended permit ip any 192.168.1.96 255.255.255.240
pager lines 24
logging enable
logging asdm informational
mtu inside 1500
mtu outside 1500
ip local pool sc-pool 192.168.1.100-192.168.1.110 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) 1 192.168.1.0 255.255.255.0
nat (inside) 1 0.0.0.0 0.0.0.0
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 authentication ssh console LOCAL
http server enable
http 192.168.1.0 255.255.255.0 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-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 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 ca trustpoint _SmartCallHome_ServerCA
crl configure
crypto isakmp enable outside
crypto isakmp policy 10
authentication pre-share
encryption 3des
hash sha
group 2
lifetime 86400
telnet timeout 5
ssh 192.168.1.0 255.255.255.0 inside
ssh timeout 5
console timeout 0
dhcp-client client-id interface outside
dhcpd auto_config outside
!
dhcpd address 192.168.1.5-192.168.1.36 inside
dhcpd dns 107.204.233.222 192.168.1.3 interface inside
dhcpd enable inside
!
threat-detection basic-threat
threat-detection statistics access-list
no threat-detection statistics tcp-intercept
webvpn
group-policy xxxxxxxx-sc internal
group-policy xxxxxxxx-sc attributes
dns-server value 107.204.233.222 192.168.1.3
vpn-tunnel-protocol IPSec
default-domain value xxxxxxxxxx.com
username xxxxx password xxxxxxxxxxx encrypted
vpn-group-policy xxxxxxxx-sc
tunnel-group xxxxxxxx-sc type remote-access
tunnel-group xxxxxxxx-sc general-attributes
address-pool sc-pool
default-group-policy xxxxxxxx-sc
tunnel-group xxxxxxxx-sc 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 client auto
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
inspect ip-options
!
service-policy global_policy global
prompt hostname context
service call-home
call-home reporting anonymous
call-home
contact-email-addr xxxxxxx@hotmail.com
profile CiscoTAC-1
destination address http https://tools.cisco.com/its/service/oddce/services/DDCEService
destination address email callhome@cisco.com
destination transport-method http
subscribe-to-alert-group diagnostic
subscribe-to-alert-group environment
subscribe-to-alert-group inventory periodic monthly
subscribe-to-alert-group configuration periodic monthly
subscribe-to-alert-group telemetry periodic daily
Cryptochecksum:5c1c99b09fb26fcc36a8bf7206af8e02
: end
Solved! Go to Solution.
02-17-2013 04:15 PM
Hi,
Try adding the following commands
same-security-traffic permit intra-interface
nat (outside) 1 192.168.1.96 255.255.255.240
If there is still problems with the VPN then I would suggest perhaps changing the VPN Pool to something else than something that overlaps with the LAN network.
In that case these configurations should do the trick
In order from top to bottom they would do the following things
tunnel-group xxxxxxxx-sc general-attributes
no address-pool sc-pool
no ip local pool sc-pool 192.168.1.100-192.168.1.110 mask 255.255.255.0
ip local pool sc-pool 192.168.2.10-192.168.2.254 mask 255.255.255.0
tunnel-group xxxxxxxx-sc general-attributes
address-pool sc-pool
access-list inside_nat0_outbound extended permit ip 192.168.1.0 255.255.255.0 192.168.2.0 255.255.255.0
no access-list inside_nat0_outbound extended permit ip any 192.168.1.96 255.255.255.240
Naturally you would also need the NAT configuration for the new VPN Pools Internet traffic
nat (outside) 1 192.168.2.0 255.255.255.0
Please rate if the information was helpfull If this solved the problem mark the question as answered.
- Jouni
02-17-2013 04:15 PM
Hi,
Try adding the following commands
same-security-traffic permit intra-interface
nat (outside) 1 192.168.1.96 255.255.255.240
If there is still problems with the VPN then I would suggest perhaps changing the VPN Pool to something else than something that overlaps with the LAN network.
In that case these configurations should do the trick
In order from top to bottom they would do the following things
tunnel-group xxxxxxxx-sc general-attributes
no address-pool sc-pool
no ip local pool sc-pool 192.168.1.100-192.168.1.110 mask 255.255.255.0
ip local pool sc-pool 192.168.2.10-192.168.2.254 mask 255.255.255.0
tunnel-group xxxxxxxx-sc general-attributes
address-pool sc-pool
access-list inside_nat0_outbound extended permit ip 192.168.1.0 255.255.255.0 192.168.2.0 255.255.255.0
no access-list inside_nat0_outbound extended permit ip any 192.168.1.96 255.255.255.240
Naturally you would also need the NAT configuration for the new VPN Pools Internet traffic
nat (outside) 1 192.168.2.0 255.255.255.0
Please rate if the information was helpfull If this solved the problem mark the question as answered.
- Jouni
02-17-2013 04:50 PM
Hi Jouni,
It works! After putting the first two commands to the conf and reconnect to vpn, I can access to the web without problems. Thank you so much.
Harry
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