VPN Connection behind ASA 5505

Posted on 2009-02-12
Last Modified: 2012-05-06
I am using Cisco's VPN client to VPN into state owned VPN equipment.  I was able to use the VPN correctly before adding a Cisco ASA 5505 and Windows SBS 2008.  Now the connection gets made, but none of the applicaitons will launch.  I see the following error in the system logs on the ASA and I cannot launch the needed applications over the VPN.

translation creation failed for protocol 50 src inside: dst outside:XXX.XX.XX.X

Thanks for any insight you can give me.  I did add the crypto isakmp nat-traversal  20 thinking that would resolve the issue, but didn't.

Result of the command: "show running config"

Result of the command: "show running-config"

: Saved
ASA Version 7.2(4)
hostname ciscoasa
enable password 8Ry2YjIyt7RRXU24 encrypted
passwd 2KFQnbNIdI.2KYOU encrypted
interface Vlan1
 nameif inside
 security-level 100
 ip address
interface Vlan2
 nameif outside
 security-level 0
 ip address dhcp setroute
interface Vlan3
 nameif dmz
 security-level 50
 ip address dhcp
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
same-security-traffic permit inter-interface
same-security-traffic permit intra-interface
object-group service CompanyWebAccess tcp
 description External secure Companyweb access
 port-object eq 987
access-list inside_nat0_outbound extended permit ip any
access-list outside_access_in remark SMTP Port 25
access-list outside_access_in extended permit tcp any host eq smtp
access-list outside_access_in remark RWW and OWA
access-list outside_access_in extended permit tcp any host eq https
access-list outside_access_in remark External secure Companyweb access
access-list outside_access_in extended permit tcp any host eq 987
access-list outside_access_in remark PPTP (VPN)
access-list outside_access_in extended permit tcp any host eq pptp
pager lines 24
logging enable
logging asdm informational
mtu inside 1500
mtu outside 1500
mtu dmz 1500
ip local pool VPNpool mask
no failover
monitor-interface inside
monitor-interface outside
monitor-interface dmz
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) 0 access-list inside_nat0_outbound
nat (inside) 1
static (inside,outside) tcp interface smtp smtp netmask
static (inside,outside) tcp interface https https netmask
static (inside,outside) tcp interface 987 987 netmask
static (inside,outside) tcp interface pptp pptp netmask
access-group outside_access_in in interface outside
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 inside
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart
crypto ipsec transform-set ESP-3DES-SHA esp-3des esp-sha-hmac
crypto dynamic-map outside_dyn_map 20 set pfs group1
crypto dynamic-map outside_dyn_map 20 set transform-set ESP-3DES-SHA
crypto dynamic-map outside_dyn_map 40 set pfs group1
crypto dynamic-map outside_dyn_map 40 set transform-set ESP-3DES-SHA
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 sha
 group 2
 lifetime 86400
crypto isakmp nat-traversal  20
telnet timeout 5
ssh timeout 5
console timeout 0
dhcpd auto_config outside
dhcpd address inside
dhcprelay server inside

group-policy VPNgroup internal
group-policy VPNgroup attributes
 dns-server value
 vpn-tunnel-protocol IPSec
group-policy vpngroup internal
group-policy vpngroup attributes
 dns-server value
 vpn-tunnel-protocol IPSec
username amplitel password Bu3OwTYaJv/0C2MR encrypted privilege 0
username amplitel attributes
 vpn-group-policy VPNgroup
tunnel-group VPNgroup type ipsec-ra
tunnel-group VPNgroup general-attributes
 address-pool VPNpool
 default-group-policy VPNgroup
tunnel-group VPNgroup ipsec-attributes
 pre-shared-key *
tunnel-group vpngroup type ipsec-ra
tunnel-group vpngroup general-attributes
 address-pool VPNpool
 default-group-policy vpngroup
tunnel-group vpngroup ipsec-attributes
 pre-shared-key *
class-map inspection_default
 match default-inspection-traffic
policy-map type inspect dns preset_dns_map
  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
: end
Question by:lahma35
    LVL 15

    Accepted Solution

    Your access-lists for port forwarding have incorrect syntax
    This is the correct syntax for NAT using port-forwarding with the corresponding access-lists

    the ip addresses below are for example only.

    access-list outside_access_in extended permit tcp any interface outside eq 3389
    static (inside,outside) tcp interface 3389 3389 netmask
    access-group outside_access_in in interface outside

    try using these first although these commands control traffic from outside-in to the services i.e smtp, http, ftp, etc

    Also, this could be causing issues:

    static (inside,outside) tcp interface pptp pptp netmask

    Also,  Why are you port forwarding pptp?

    you want to use ipsec with cisco clients and asa
    LVL 1

    Author Comment

    The port forwarding is for the SBS 2008, and I thought something was wrong with that.  Thank you for correcting it.  I just opened all ports for the SBS and didn't realize Ihad added pptp to the CLI until now.
    I found out from the network administrator at the VPN connection site that I needed to open a few ports up.  I am looking for the CLI to open the following ports...any help would be greatly appriciated.

    TCP : 10000
    UDP: 4500
    UDP: 500
    ESP Traffic
    LVL 15

    Assisted Solution

    just substitue the above ports in the commands I gave you if you are doing port forwarding
    and remember, esp is a protocol, not a tcp or udp port

    the above ports allow nat-traversal on IPSEC tunnels

    here is a quick reference on the above

    also, create a link for this:

    this is a great reference for firewall ports


    Featured Post

    6 Surprising Benefits of Threat Intelligence

    All sorts of threat intelligence is available on the web. Intelligence you can learn from, and use to anticipate and prepare for future attacks.

    Join & Write a Comment

    Imagine you have a shopping list of items you need to get at the grocery store. You have two options: A. Take one trip to the grocery store and get everything you need for the week, or B. Take multiple trips, buying an item at a time, to achieve t…
    #Citrix #Citrix Netscaler #HTTP Compression #Load Balance
    After creating this article (, I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
    After creating this article (, I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…

    754 members asked questions and received personalized solutions in the past 7 days.

    Join the community of 500,000 technology professionals and ask your questions.

    Join & Ask a Question

    Need Help in Real-Time?

    Connect with top rated Experts

    22 Experts available now in Live!

    Get 1:1 Help Now