07-25-2011 07:55 AM - edited 03-11-2019 02:03 PM
Guys,
Hope someone can assist, suspect it's a fairly simple issue that will highlight my lack of knowledge rather than anything else!
We have a BT Infinity broadband circuit which terminates at a vdsl modem, I've plugged an ASA 5505 into the back of this modem and gone through the ADSM quick setup wizard (yes I'm that much of a beginner!) The config that's been generated is pasted below, the symptomns I'm seeing are;
The ASA is setup with PPPOE on the internet connection, I assume this is correct as if I do a show IP on the ASA I'm getting an IP address that has been assigned, if I change the password to the wrong one then I get no IP (as expected).
If I ping from the ASA to an internet connection I'm getting "no route" error messages, if I try a "ping outside x.x.x.x" then I get no repsonses.
The ASA can ping it's external IP, the client machines can ping it's internal, however nothing appears to be able to get out.
Unfortunately this thing isn't based on the site I'm located at and is a pain to get to, so if anyone can find the fault that's brilliant, hiowever if possible and people have further questions that's great but can you also give some options on what to do depending on the answers as I'm hoping to only go back to site once!
ASA Version 8.4(1)
!
hostname xxxxxx
enable password xxxxxx encrypted
passwd xxxxxx encrypted
names
!
interface Vlan1
nameif inside
security-level 100
ip address 192.168.200.3 255.255.255.0
!
interface Vlan2
nameif outside
security-level 0
pppoe client vpdn group Infinity
ip address pppoe
!
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
object network obj_any
subnet 0.0.0.0 0.0.0.0
pager lines 24
logging asdm informational
mtu outside 1500
mtu inside 1500
icmp unreachable rate-limit 1 burst-size 1
no asdm history enable
arp timeout 14400
!
object network obj_any
nat (inside,outside) dynamic interface
!
nat (inside,outside) after-auto source dynamic any interface
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 192.168.200.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart warmstart
telnet timeout 5
ssh timeout 5
console timeout 0
vpdn group Infinity request dialout pppoe
vpdn group Infinity localname xxxxxx@hg43.btclick.com
vpdn group Infinity ppp authentication chap
vpdn username xxxxxx@hg43.btclick.com password *****
dhcpd auto_config outside
!
dhcpd address 192.168.200.7-192.168.200.134 inside
!
threat-detection basic-threat
threat-detection statistics access-list
no threat-detection statistics tcp-intercept
webvpn
!
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
07-25-2011 08:03 AM
Hi Danny,
Yes, you would need a default route on the ASA, something like this:
route outside 0.0.0.0 0.0.0.0
This gateway ip would be the ip address of the ISP device upstream.
Moreover you wouldneed an ACL as well, to allow ping replies:
access-list outside_access_in permit icmp any any
access-group outside_access_in in interface outside
and it shoudl ping after that.
Hope this helps.
Thanks,
Varun
07-25-2011 08:10 AM
For the default route can I use the interface itself rather than the upstream device? Reason is BT are notoriously bad at giving out information and won't talk to you unless you are using their pre-configured equipment.
Regards,
Danny
07-25-2011 08:13 AM
Hi Danny,
This default gateway is the ip address of the next for the outside interface only, so you would definitely need to know the ip address, i am not really sure if BT should have any problem with that, because they should definitely reveal this info to the client.
Thanks,
Varun
07-25-2011 08:15 AM
I'll see if I can get anything out of them, they are an awful company to try and deal with! I'll let you know how I get on...
Many thanks for the advice so far!
07-25-2011 08:17 AM
Sure no problem.... let me know if you get stuck anywhere else .
-Varun
07-25-2011 08:18 AM
Danny
I know what you mean about BT, they are just too big sometimes to get a quick answer. You are using DHCP to get an outside address so they may well be supplying you with a default-route as well. Can you add this to your config and see if it helps -
ip address dhcp setroute
Jon
08-09-2011 01:24 AM
Finally managed to get some more testing done...
ip addresss pppoe setroute
gave
ERROR: No vpdn group for PPPoE has been defined
ERROR: ip address command failed
I managed to get the default route off the existing BT router and added
route outside 0.0.0.0 0.0.0.0 81.134.112.1
As sh route then showed the default route had been accepted, however still unable to ping anything on the internet.
Any further ideas?
Danny
08-09-2011 01:57 AM
Lets then go the capture way, setup a laptop connected to your inside interface, assign it an IP, lets say 192.168.200.10
Do a "show ip" first, check the current ip of the outside interface.
Then we woudl need to apply captures for them:
access-list cap permit ip ho 192.168.200.10 any
access-list cap permit ip any ho 192.168.200.10
access-list cap permit ip any
access-list cap permit ip
cap capin access-list cap interface inside
cap capo access-list cap interface outside.
alongwith it, run the command:
packet-tracer input inside tcp host 192.168.200.10 2345 1.1.1.1 80 detailed
collect the logs as well when the traffic is denied.
This would give us a clearer picture.
Thanks,
Varun
08-09-2011 02:15 AM
Varun,
Will get this done, bit of an idiot question, do I need to do anything specific on the PC to generate traffic that will be picked up by the traffic capture? Also are the logs generated on the console so just capture the output from that or do I need to go somewhere specific to get the logs?
Danny
08-09-2011 02:47 AM
Hi Danny,
No, you would just need the IP address and the default gateway on the PC, nothing else. Just generate traffic from it after applying captures.
-Varun
08-09-2011 03:15 AM
Hi,
Can you Ping your defaultgateway?
Regards,
Robert
Sent from Cisco Technical Support iPad App
08-09-2011 06:49 AM
Hi Danny,
Try the below...
interface Vlan2
nameif outside
security-level 0
pppoe client vpdn group Infinity ->Unless carrier requires this, remove this entry.All you need for VPDN is username/pass.
ip address pppoe -> add keyword 'setroute' at the end (ip address pppoe setroute)
!
Remove the default route statement (route outside).
hth
MS
03-02-2012 04:48 AM
just to confirm, i successfully setup our ASA 5505 thanks to this page. The following works:
interface Vlan2
nameif outside
security-level 0
pppoe client vpdn group BTINFINITY
ip address pppoe setroute
!
vpdn group BTINFINITY request dialout ppoe
vpdn group BTINFINITY localname "username provided bt = *******@hg**.btclick.com"
vpdn group BTINFINITY ppp authentication chap
vpdn username *******@hg**.btclick.com password "pw provided by bt" store-local
!
remove your current route outside if one is set from a different isp and add a new route outside, the default gateway needed will not be supplied by BT as they are renowned for their "we do not support any product that is not our own"
So to find the default gateway, on the BT Business hub provided goto Settings > Broadband > Routing and there will be a listing for interface bridge0 which has your external IP and gateway. that is the gateway IP you need to set as the route outside.
route outside ***.***.***.***
job done!
06-18-2012 07:43 AM
Hi I'm having the same issue as Danny in that I can pick up my external IP but unable to ping or access the internet, if someone could look at my config and see if I've missed anything obvious? Please note I'm also a beginner and have configured it using the ADSM GUI.
One question do I need to enable DNS on the outside interface and specify a DNS server or should all of that work automatically?
: Saved
:
ASA Version 8.4(3)
!
hostname UUKFIREWALL001
domain-name uii.com
enable password 8Ry2YjIyt7RRXU24 encrypted
passwd 2KFQnbNIdI.2KYOU 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 192.168.205.3 255.255.255.0
!
interface Vlan2
nameif outside
security-level 0
pppoe client vpdn group Unique
ip address pppoe setroute
!
ftp mode passive
clock timezone GMT/BST 0
clock summer-time GMT/BDT recurring last Sun Mar 1:00 last Sun Oct 2:00
dns server-group DefaultDNS
domain-name uii.com
object network obj_any
subnet 0.0.0.0 0.0.0.0
pager lines 24
logging enable
logging asdm informational
mtu inside 1500
mtu outside 1500
icmp unreachable rate-limit 1 burst-size 1
no asdm history enable
arp timeout 14400
!
object network obj_any
nat (inside,outside) dynamic interface
route outside 0.0.0.0 0.0.0.0 81.139.128.1 1
timeout xlate 3:00:00
timeout pat-xlate 0:00:30
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
user-identity default-domain LOCAL
http server enable
http 192.168.205.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart warmstart
crypto ca trustpoint _SmartCallHome_ServerCA
crl configure
crypto ca certificate chain _SmartCallHome_ServerCA
certificate ca 6ecc7aa5a7032009b8cebcf4e952d491
308205ec 308204d4 a0030201 0202106e cc7aa5a7 032009b8 cebcf4e9 52d49130
0d06092a 864886f7 0d010105 05003081 ca310b30 09060355 04061302 55533117
30150603 55040a13 0e566572 69536967 6e2c2049 6e632e31 1f301d06 0355040b
13165665 72695369 676e2054 72757374 204e6574 776f726b 313a3038 06035504
0b133128 63292032 30303620 56657269 5369676e 2c20496e 632e202d 20466f72
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65727469 66696361 74696f6e 20417574 686f7269 7479202d 20473530 1e170d31
30303230 38303030 3030305a 170d3230 30323037 32333539 35395a30 81b5310b
30090603 55040613 02555331 17301506 0355040a 130e5665 72695369 676e2c20
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2e766572 69736967 6e2e636f 6d2f6370 73302a06 082b0601 05050702 02301e1a
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69676e2e 636f6d2f 76736c6f 676f2e67 69663028 0603551d 11042130 1fa41d30
1b311930 17060355 04031310 56657269 5369676e 4d504b49 2d322d36 301d0603
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1d230418 30168014 7fd365a7 c2ddecbb f03009f3 4339fa02 af333133 300d0609
2a864886 f70d0101 05050003 82010100 0c8324ef ddc30cd9 589cfe36 b6eb8a80
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5becb37f 954afb03 c8ad26db e6667812 4ad99f42 fbe198e6 42839b8f 8f6724e8
6119b5dd cdb50b26 058ec36e c4c875b8 46cfe218 065ea9ae a8819a47 16de0c28
6c2527b9 deb78458 c61f381e a4c4cb66
quit
telnet timeout 5
ssh timeout 5
console timeout 0
vpdn group Unique request dialout pppoe
vpdn group Unique localname C******@hg28.btclick.com
vpdn group Unique ppp authentication chap
vpdn username C******@hg28.btclick.com password *****
dhcpd auto_config outside
!
dhcpd address 192.168.205.5-192.168.205.254 inside
!
threat-detection basic-threat
threat-detection statistics access-list
no threat-detection statistics tcp-intercept
ntp server 192.168.205.6 source inside
webvpn
!
!
prompt hostname context
call-home reporting anonymous
Cryptochecksum:55c8cb960644150cfd718059f8c6fa18
: end
no asdm history enable
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