(9 votes, average: 4.33 out of 5)
Loading ...I recently purchased a shiny new iPhone 3G and wanted to be able to connect back to my house where I have a Cisco ASA 5505. I have noticed a lot of questions about how to get this to work, so here it is…
First, make sure you are running ASA Software version 8.0(3) or better. The previous versions have a bug when the iPhone connects that will boot all other users connected to the VPN.
On the ASA, we need to get the VPN configured. First, the ACLs for split-tunneling, no NAT and VPN access:
access-list RA_VPN_SplitTunnel_ACL standard permit 172.25.25.0 255.255.255.0
access-list NoNAT_ACL extended permit ip 172.25.25.0 255.255.255.0 172.30.30.0 255.255.255.0
nat (inside) 0 access-list NoNAT_ACL
Since this config will authenticate to the local ASA, we need to have a username and password setup:
Now setup a DHCP pool for VPN clients:
Now create the crypto maps and apply them to the outside interface:
crypto dynamic-map RA_VPN_MAP 1 match address RA_VPN_ACL
crypto dynamic-map RA_VPN_MAP 1 set transform-set RA_VPN_SET
crypto dynamic-map RA_VPN_MAP 1 set reverse-route
crypto map RA_VPN 65535 ipsec-isakmp dynamic RA_VPN_MAP
crypto map RA_VPN interface outside
Setup ISAKMP:
crypto isakmp policy 65535
authentication pre-share
encryption 3des
hash sha
group 2
lifetime 86400
crypto isakmp nat-traversal 20
Now create a remote access VPN policy. Make sure to add the split-dns value for your local domian. If you leave this out, the iPhone will not resolve DNS on the internal network!
group-policy RA_VPN_Policy attributes
dns-server value DNS_Server_IP
vpn-tunnel-protocol IPSec
split-tunnel-policy tunnelspecified
split-tunnel-network-list value RA_VPN_SplitTunnel_ACL
split-dns value domain.local
Add the tunnel-group to allow the VPN connection:
tunnel-group RA_VPN general-attributes
address-pool RA_VPN_POOL
default-group-policy RA_VPN_Policy
tunnel-group RA_VPN ipsec-attributes
pre-shared-key your_password
Now to configure the iPhone. First, go to Settings -> General -> Network -> VPN. Then Add VPN Configuration. Select IPSec at the top and enter your information. The Server is the IP address or hostname of the ASA. The Account is the Username you created in the config above. The Group Name is the tunnel-group name created on the ASA.
To connect the VPN, go to Settings -> VPN (this appears after you create a VPN connection). Just change the option to ON.
Once you see the VPN icon on the top bar, you are connected!
Nope didn’t work, but a nice initiative.
I have no problems with a similar conf on my asa5510 except the internal dns lookup does not work.
I have no problems too. I`ve iphone 3gs os 4.0.1 and ASA 5505!!! Thank you!
This is simply beautiful. haha
Can somebody translate this to the ASA 8.0.x software? In particular, the no-nat line:
nat (inside) 0 access-list NoNAT_ACL
Thanks…
I’ve try to put working with mac osx vs cisco asa 5505
I have no problems with ipsec, but I cant cross any traffic from mac network 172.30.30.0 to remote network 192.168.82.0, this is my conf, any ideas?
ASA Version 8.2(2)
!
hostname ciscoasa
domain-name domain.local
names
!
interface Vlan1
nameif inside
security-level 100
ip address 192.168.82.2 255.255.255.0
!
interface Vlan2
nameif outside
security-level 0
ip address XXX.XXX.XXX.XXX 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 domain.local
access-list RA_VPN_ACL extended permit ip 192.168.82.0 255.255.255.0 172.30.30.0 255.255.255.0
access-list RA_VPN_SplitTunnel_ACL standard permit 192.168.82.0 255.255.255.0
access-list NoNAT_ACL extended permit ip 192.168.82.0 255.255.255.0 172.30.30.0 255.255.255.0
access-list inside_access_in extended permit ip 172.30.30.0 255.255.255.0 interface inside
pager lines 24
logging asdm informational
mtu inside 1500
mtu outside 1500
ip local pool RA_VPN_POOL 172.30.30.100-172.30.30.200 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 NoNAT_ACL
nat (inside) 1 0.0.0.0 0.0.0.0
access-group inside_access_in in interface inside
!
router ospf 1
log-adj-changes
!
route outside 0.0.0.0 0.0.0.0 200.66.64.209 1
route inside 192.168.70.0 255.255.255.0 192.168.82.1 1
route inside 192.168.72.0 255.255.255.128 192.168.82.1 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
aaa authentication ssh console LOCAL
aaa authentication http console LOCAL
http server enable
http 192.168.72.0 255.255.255.128 inside
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart
crypto ipsec transform-set RA_VPN_SET esp-aes esp-sha-hmac
crypto ipsec security-association lifetime seconds 28800
crypto ipsec security-association lifetime kilobytes 4608000
crypto dynamic-map RA_VPN_MAP 1 set transform-set RA_VPN_SET
crypto dynamic-map RA_VPN_MAP 1 set reverse-route
crypto map RA_VPN 65535 ipsec-isakmp dynamic RA_VPN_MAP
crypto map RA_VPN interface outside
crypto isakmp enable outside
crypto isakmp policy 65535
authentication pre-share
encryption 3des
hash sha
group 2
lifetime 86400
telnet timeout 5
ssh 0.0.0.0 0.0.0.0 inside
ssh timeout 5
ssh version 2
console timeout 0
dhcpd auto_config outside
!
threat-detection basic-threat
threat-detection statistics access-list
no threat-detection statistics tcp-intercept
webvpn
group-policy RA_VPN_Policy internal
group-policy RA_VPN_Policy attributes
dns-server value 4.2.2.2
vpn-tunnel-protocol IPSec
split-tunnel-policy tunnelspecified
split-tunnel-network-list value RA_VPN_SplitTunnel_ACL
split-dns value domain.local
username telecom password 8o9dUfeQPbbWT8FE encrypted privilege 15
username hespinosag password 8uJIq3lW8r1VHOG. encrypted
tunnel-group RA_VPN type remote-access
tunnel-group RA_VPN general-attributes
address-pool RA_VPN_POOL
default-group-policy RA_VPN_Policy
tunnel-group RA_VPN 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
Cryptochecksum:d41d8cd98f00b204e9800998ecf8427e
: end
ciscoasa#
@Rob: the “inside” part of the command refers to the name of the inside-facing interface on the ASA. For us, it’s “internal” – so I entered “nat (internal) 0 access-list NoNAT_ACL” instead of what’s above. We’re running 8.2.5, btw.
Hello,
Thanks for this détailed Tutorial !!
But now I’am in 8.4(1) and the “nat (internal) 0 access-list NoNAT_ACL” command is no longer usable.
Please, what synthax is correct for replacing the old one ?
thank you,
Ced,
if you get connection but no traffic split tunnel is the problem so remote that ACL, my input to this config
You dont have to have ANYconnect lics do you for basic set up like this