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asa 5505 help

jbunn1984
Level 1
Level 1

hello everyone, i have been searching the forums for quite some time and can't get the answer i'm looking which embarasses me, i have a fair understanding of networking, yet this is my first experience in the cisco/business networking area.

what i am trying to accomplish is a setup like this:

comcast cable modem <------- linksys e3000 that serves dhcp and port forwarding <------ asa 5505

what i want is all my pc's at home to connect to the e3000 and the asa 5505 to be there only for vpn access.

from what i understand of what other forum posts say, and please correct me if i'm wrong, is that i should hook up the asa 5505 to the e3000 from port 0/0 which is designated as the outside interface with ip of 192.168.10.2 which is in the same subnet as the e3000's lan interface which is ip 192.168.10.1, then on the asa 5505 i create the vpn with it's own address pool in another subnet like 192.168.20.1-10.

here's where i get confused it's with the NAT. my understanding is that i need a static route that is route 192.168.20.0 to the outside interface which i would use PAT for that, or do i use the actual IP address which would be 192.168.10.2 for the outside interface.

with it setup like this will i be able to vpn in from another site and access the resources and devices on the e3000 subnet?

my setup is a little different currently while i try and troubleshoot, but if somebody can help me through it i can take my asa 5505 off the network and configure all the settings on it and then integrate it back in to test.

thanks, Jon

5 Replies 5

andrew.prince
Level 10
Level 10

Why not just hook up the 5505 direct to the comcast cable modem, And have the asa do everything ?

Sent from Cisco Technical Support iPad App

the only reason i don't want to do that is that i only have the base license which only allows for 10 connections and i have more than 10 on my home devices i just want the asa 5505 to serve my vpn needs when i'm outside my network to vpn in.

After posting this question in this forum Jonathan also posted the same question in the LAN Switching and Routing forum, where I posted a response. The discussion of this should be consolidated one place or the other.

HTH

Rick

HTH

Rick

hi there sorry for the long delay in responding i was out of town

i got the asa working with my configuration when i use the Webvpn locally using ip:port number, however when i try to go externally it will not come up, does anybody have any ideas of what would be doing that? i do have a few static routes in there cause i wasn't sure how it needed to be written.

here is my running config:

ASA Version 7.2(4)
!
hostname ciscoasa
domain-name hsd1.or.comcast.net
enable password 0ObSiEP8baCVeJ6/ encrypted
passwd 2KFQnbNIdI.2KYOU encrypted
names
!
interface Vlan1
nameif inside
security-level 100
ip address 192.168.10.4 255.255.255.0
!
interface Vlan2
nameif outside
security-level 0
ip address dhcp setroute
!
interface Vlan3
shutdown
no forward interface Vlan1
nameif dmz
security-level 50
ip address 192.168.40.1 255.255.255.0
!
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
dns server-group DefaultDNS
domain-name hsd1.or.comcast.net
same-security-traffic permit inter-interface
same-security-traffic permit intra-interface
access-list DefaultRAGroup_splitTunnelAcl standard permit any
pager lines 24
logging asdm informational
mtu inside 1500
mtu outside 1500
mtu dmz 1500
ip local pool vpn 192.168.20.10-192.168.20.40 mask 255.255.255.0
icmp unreachable rate-limit 1 burst-size 1
asdm image disk0:/asdm-524.bin
no asdm history enable
arp timeout 14400
global (outside) 1 interface
nat (inside) 1 0.0.0.0 0.0.0.0
route inside 0.0.0.0 0.0.0.0 192.168.10.0 1
route inside 0.0.0.0 0.0.0.0 192.168.10.1 1
route inside 192.168.20.0 255.255.255.0 192.168.10.1 1
route inside 192.168.20.0 255.255.255.255 192.168.10.0 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
http server enable
http 192.168.10.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart
crypto ipsec transform-set TRANS_ESP_3DES_SHA esp-3des esp-sha-hmac
crypto ipsec transform-set TRANS_ESP_3DES_SHA mode transport
crypto dynamic-map inside_dyn_map 20 set pfs group1
crypto dynamic-map inside_dyn_map 20 set transform-set TRANS_ESP_3DES_SHA
crypto map inside_map 65535 ipsec-isakmp dynamic inside_dyn_map
crypto map inside_map interface inside
crypto isakmp enable inside
crypto isakmp policy 10
authentication pre-share
encryption 3des
hash sha
group 2
lifetime 86400
telnet timeout 5
ssh timeout 5
console timeout 0
dhcpd auto_config outside
!
dhcpd address 192.168.10.5-192.168.10.36 inside
dhcpd dns 192.168.10.4 8.8.8.8 interface inside
dhcpd wins 192.168.10.4 8.8.8.8 interface inside
dhcpd enable inside
!

webvpn
port 445
enable inside
url-list servers "video" cifs://192.168.10.100/video 1
url-list servers "ssl vpn" https://demandingcomputers.com:445 2
port-forward ports 445 https://demandingcomputers.com:445 445 connection
group-policy DefaultRAGroup internal
group-policy DefaultRAGroup attributes
wins-server value 192.168.10.1 8.8.8.8
dns-server value 192.168.10.1 8.8.8.8
vpn-tunnel-protocol l2tp-ipsec webvpn
address-pools none
username jordge password HT9LERuHDPYWEw7W+3I35A== nt-encrypted privilege 0
username jordge attributes
vpn-group-policy DefaultRAGroup
username jbunn password cOYuyzV1z2T86+EWhn6/RA== nt-encrypted privilege 15
username jbunn attributes
vpn-group-policy DefaultRAGroup
vpn-idle-timeout none
vpn-session-timeout none
vpn-tunnel-protocol IPSec l2tp-ipsec webvpn
vpn-framed-ip-address 192.168.10.6 255.255.255.0
webvpn
  functions url-entry file-access file-entry file-browsing mapi port-forward filter http-proxy auto-download citrix
  html-content-filter none
  url-list value servers
  port-forward value ports
tunnel-group DefaultRAGroup general-attributes
address-pool vpn
default-group-policy DefaultRAGroup
tunnel-group DefaultRAGroup ipsec-attributes
pre-shared-key *
tunnel-group DefaultRAGroup ppp-attributes
authentication ms-chap-v2
!
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:3c7f52299567f49533252427a21003eb
: end

I think you'd have to do something like

http 10.10.10.0 255.255.255.0 outside

to be able to connect from the 10.10.10.0/24 subnet for example.

or

http 0.0.0.0 0.0.0.0 outside

that should allow your WebVPN connections from the outside world.

I hope this helps.

Raga

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