07-13-2010 07:33 AM
I've got a test setup on my desk.
It goes:
Ubuntu host(vm)-------------Openswan on ubuntu (vm)----- vmware gateway------ xp host-------------------- cisco asa ------ xp host
192.168.2.2 192.168.92.128 192.168.92.2 200.200.200.2 200.200.200.1 192.168.1.5
===================tunnel=====================
Now i had it working before, worked on some other things, came back to it and it wasnt working, so im not sure what or where i changed something. I could easily start over but id rather find out whats wrong with it. So when i ping 192.168.1.5 from 192.168.2.2, there are no replies. However i did a capture on the inside interface of the ASA and there was replies shown there, they wouldnt come back past that. I've also tried using netcat to send a file over on port 1234. On wireshark on the openswan vm, i can see a few ESP packets destined for 200.200.200.1, but 192.168.1.5 doesnt receive them.
Here's my show run output:
!
hostname ciscoasa
enable password 8Ry2YjIyt7RRXU24 encrypted
passwd 2KFQnbNIdI.2KYOU encrypted
names
!
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 200.200.200.1 255.255.255.0
!
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
access-list inbound extended permit ip any any
access-list inbound extended permit udp any any eq isakmp
access-list inbound extended permit udp any any eq 4500
access-list inbound extended permit esp any any
access-list inbound extended deny ip any any
access-list NONAT extended permit ip 192.168.1.0 255.255.255.0 192.168.2.0 255.2
55.255.0
access-list inbound2 extended permit ip 192.168.1.0 255.255.255.0 192.168.2.0 25
5.255.255.0
access-list inbound2 extended permit ip host 200.200.200.1 host 200.200.200.2
pager lines 24
logging enable
logging timestamp
logging buffered debugging
logging asdm informational
mtu inside 1500
mtu outside 1500
ip local pool name 192.168.1.40-192.168.1.60
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
nat (inside) 1 0.0.0.0 0.0.0.0
access-group inbound in interface outside
route outside 0.0.0.0 0.0.0.0 200.200.200.0
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
dynamic-access-policy-record DfltAccessPolicy
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 ts2 esp-3des esp-md5-hmac
crypto ipsec security-association lifetime seconds 28800
crypto ipsec security-association lifetime kilobytes 4608000
crypto dynamic-map dmap 20 set transform-set ts2
crypto map emap 10 match address inbound2
crypto map emap 10 set peer 192.168.92.128
crypto map emap 10 set transform-set ts2
crypto map emap 60000 ipsec-isakmp dynamic dmap
crypto map emap interface outside
crypto isakmp enab
crypto isakmp policy 10
authentication pre-share
encryption 3des
hash md5
group 2
lifetime 86400
telnet timeout 5
ssh timeout 5
console timeout 0
management-access inside
dhcpd auto_config outside
!
dhcpd address 192.168.1.5-192.168.1.36 inside
dhcpd enable inside
!
threat-detection basic-threat
threat-detection statistics access-list
no threat-detection statistics tcp-intercept
webvpn
username ryan password .MqBmFV5KQ86DWrJ encrypted
tunnel-group 200.200.200.2 type ipsec-l2l
tunnel-group 200.200.200.2 ipsec-att
pre-shared-key *
tunnel-group ryan type remote-access
tunnel-group ryan general-attributes
address-pool name
tunnel-group ryan 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:26b17c4d709bc72a3d76158f2c9997bd
: end
help is appreciated, thanks
07-13-2010 08:39 AM
Well for some unknown reason, clearing out the ACLs and nat commands, then re entering them made it work. I just dont understand computers sometimes.
07-14-2010 11:08 AM
Whenever I execute a reload, or power cycle the asa, the ACLs have to be cleared and re entered. Anyone know why this may be?
07-15-2010 05:24 AM
Some more information:
So im trying to get the opensource VPN to talk with a Cisco ASA for a site-to-site VPN solution. I have an endpoint ubuntu machine using a localhost adapter, the other ubuntu has openswan installed and is a virutal machine as well on the same windows xp host. this openswan has two virtual NICs, one is localhost to talk with the other ubuntu. The second NIC is NAT to connect to the the windows machine, and the ASA beyond that. On the otherside of the asa is a laptop running XP.
Openswan and the ASA are setup to start an ipsec vpn and talk to one another. I can then send a file through the vpn with netcat. I sniff the traffic along the way, and everything is encrypted with ESP.
So everything is fine up to this point. However should I need to execute a reload or, the ASA gets power cycled, for whatever reason, the packets that are sent from the ubuntu host, get stopped after the outside interface of the ASA. If i clear the ACLs, reenter them, and configure a couple other lines that referenced the ACLs, everything is fine again. This also needs to occur if the openswan machine is rebooted.
07-15-2010 06:17 AM
"ike initiator unable to find policy"
Is what im getting in buffered warning messages on the ASA.
07-15-2010 11:53 AM
Some more progress in trying to fix, hope this can help point in the right direction. I removed the crypto dynamic-map line and the crypto map emap 60000 line referencing it. Now I get an error: no matching crypto map entry for remote proxy 10.10.10.0/255.255.255.0/0/0 local proxy 192.168.1.0/255.255.255.0/0/0 on interface outside.
Now i've been reading that for site-to-site ASAs you need mirrored ACLs for the crypto maps. So maybe someone can look at my iptables and see something?
$IPTABLES -A INPUT -p udp --dport 500 -j ACCEPT
$IPTABLES -A OUTPUT -p udp --dport 500 -j ACCEPT
$IPTABLES -A INPUT -p udp --dport 4500 -j ACCEPT
$IPTABLES -A OUTPUT -p udp --dport 4500 -j ACCEPT
$IPTABLES -A OUTPUT -p udp --sport 4500 -j ACCEPT
$IPTABLES -t mangle -A PREROUTING -i eth0 -p esp -j MARK --set-mark 1
$IPTABLES -A FORWARD -i eth0 -m mark --mark 1 -s 10.10.10.0 -d 192.168.1.0/24 -j ACCEPT
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide