ASA 5505 NAT and L2L CoExisting Issue

[travelleradmin]

I hope you guys can give me a helping hand. I recently purchased a new ASA 5505 with IOS Ver.8.2(1)

My network is pretty straight forward. ISP connects to ASA then a single /24 internal private lan.

-->ISP --> ASA -->internal lan

I need one machine on internal to communication over l2l Ipsec vpn to a remote location. I believe I'm pretty close on making it work, however everytime I issue the command nat (inside) 0 access-list inside_nat0_outbound the VPN connection is able to pass data, but NAT seems to be broken for the rest of the internal network. Meaning no outside connectivity for the rest of the pc(s) on the network.

I have included a copy of my config, hopefully someone can tell me what I may be doing wrong.

: Saved
: Written by CiscoUser at 18:25:30.599 UTC Thu Mar 25 2010
!
ASA Version 8.2(1)
!
hostname ASA5505-SR1
domain-name ASA5505-SR1.com
enable password xxxxxxxxxxxxx
passwd xxxxxxxxxxxx encrypted
names
!
interface Vlan1
nameif inside
security-level 100
ip address 192.168.11.1 255.255.255.0
!
interface Vlan2
nameif outside
security-level 0
ip address xxx.xxx.176.10 255.255.255.248
!
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
dns server-group DefaultDNS
domain-name ASA5505-SR1.com
access-list outside_1_cryptomap extended permit ip host 192.168.11.212 host 10.169.15.2
access-list outside_1_cryptomap extended permit ip host 192.168.11.212 host 10.169.15.40
access-list outside_1_cryptomap extended permit ip host 192.168.11.212 host 10.169.15.51
access-list inside_nat0_outbound extended permit ip host 192.168.11.212 host 10.169.15.2
access-list inside_nat0_outbound extended permit ip host 192.168.11.212 host 10.169.15.40
access-list inside_nat0_outbound extended permit ip host 192.168.11.212 host 10.169.15.51
access-list inside_nat0_outbound extended permit ip 192.168.11.0 255.255.255.0 any
access-list outside_in extended permit icmp any any echo-reply
access-list outside_access_in extended permit icmp any any
access-list inside_in extended permit ip 192.168.11.0 255.255.255.0 any
pager lines 24
logging enable
logging trap informational
logging history informational
logging asdm informational
mtu inside 1500
mtu outside 1500
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) 1 192.168.11.0 255.255.255.0
access-group inside_in in interface inside
access-group outside_in in interface outside
route outside 0.0.0.0 0.0.0.0 xxx.xxx.176.9 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
aaa authentication enable console LOCAL
aaa authentication ssh console LOCAL
aaa authentication telnet console LOCAL
aaa local authentication attempts max-fail 5
http server enable
http 192.168.11.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart
crypto ipsec transform-set ESP-3DES-MD5 esp-3des esp-md5-hmac
crypto ipsec security-association lifetime seconds 28800
crypto ipsec security-association lifetime kilobytes 4608000
crypto dynamic-map outside_dyn_map 20 set pfs
crypto dynamic-map outside_dyn_map 20 set transform-set ESP-3DES-MD5
crypto map outside_map 1 match address outside_1_cryptomap
crypto map outside_map 1 set peer xxx.xxx.xxx.xxx
crypto map outside_map 1 set transform-set ESP-3DES-MD5
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 md5
group 2
lifetime 86400
no crypto isakmp nat-traversal
telnet timeout 5
ssh 192.168.11.0 255.255.255.0 inside
ssh timeout 5
console timeout 0
dhcpd auto_config outside
!
dhcpd address 192.168.11.100-192.168.11.130 inside
dhcpd dns xxx.xxx.xxx.2 xxx.xxx.xxx.3 interface inside
dhcpd lease 86400 interface inside
dhcpd domain ASA5505-SR1.com interface inside
dhcpd enable inside
!

threat-detection basic-threat
threat-detection statistics port
threat-detection statistics protocol
threat-detection statistics access-list
threat-detection statistics tcp-intercept rate-interval 30 burst-rate 400 average-rate 200
webvpn
username CiscoUser password xxxxxxxxxxx encrypted privilege 15
tunnel-group xxx.xxx.xxx.xxx type ipsec-l2l
tunnel-group xxx.xxx.xxx.xxx 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 netbios
inspect rsh
inspect rtsp
inspect skinny
inspect esmtp
inspect sqlnet
inspect sunrpc
inspect tftp
inspect sip
inspect xdmcp
!
service-policy global_policy global
prompt hostname context
: end

Thanks for your help!

 

[unclerico]

your problem is this line:

access-list inside_nat0_outbound extended permit ip 192.168.11.0 255.255.255.0 any

you either need to make it more specific or remove it all together. with the statement that way it is, any time traffic from the 11 network hits the inside interface it is extempted from the NAT process.

I hate all Uppercase... I don't want my groups to seem angry at me all the time! =)
- ColdFlame (vbscript forum)

 

[travelleradmin]

Thank you so much. That solved my issue!