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New Member

Internet connectivity issue with firewall

We recently had a T1 put in by qwest with them providing static ip address's and a qwest basic router. We are currently running a ASA 5505 behind the router, and a Linksys wireless router behind the ASA 5505.

The issue at hand is I went through the wizard to setup our firewall with the static IP address. Pretty basic figuring we just wanted to test it.

From the Firewall ASDM software I can ping websites, but from my PC I am not able to get out to the web.

The error I get is as follows

portmap translation creation failed for udp src inside: dst

The 205 address is the DNS servers qwest has provided to us. So I am a little confussed why its going there and not our outside IP.

Here is my config, file.

interface Vlan1

nameif inside

security-level 50

ip address


interface Vlan2

nameif outside

security-level 0

ip address


interface Vlan3


no forward interface Vlan1

nameif dmz

security-level 50

no ip address


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


passwd 2KFQnbNIdI.2KYOU encrypted

ftp mode passive

dns domain-lookup inside

dns domain-lookup outside

dns server-group DefaultDNS



domain-name default.domain.invalid

access-list VPN standard permit

access-list VPN standard permit

access-list outside_access_in extended permit ip any any

pager lines 24

logging enable

logging asdm informational

mtu inside 1500

mtu outside 1500

mtu dmz 1500

icmp unreachable rate-limit 1 burst-size 1

asdm image disk0:/asdm-523.bin

no asdm history enable

arp timeout 14400

nat (inside) 1

access-group outside_access_in in interface outside

route outside 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 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

telnet timeout 5

ssh timeout 5

console timeout 0

dhcpd auto_config outside


dhcpd address inside

dhcpd dns interface inside

dhcpd enable inside



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

Hall of Fame Super Blue

Re: Internet connectivity issue with firewall

You are not translating your internal addresses to routable addresses on the Internet. You have this in your config -

nat (inside) 1

you need a corresponding global statement. Add this to your config -

global (outside) 1 interface


Re: Internet connectivity issue with firewall

I missed you by "that much" Jon :)


HTH, John *** Please rate all useful posts ***
Hall of Fame Super Blue

Re: Internet connectivity issue with firewall

At least we both gave the same advice :-)

Re: Internet connectivity issue with firewall

LOL! Yeah, that's a plus :)

HTH, John *** Please rate all useful posts ***

Re: Internet connectivity issue with firewall

Two things:

1.) You may want to check with the provider to make sure they bridged the router that's in front of your ASA. If they didn't, you won't be able to get out :-)

2.) You're missing "global (outside) 1 interface"

What the last line does is match up with your nat statement. The nat statement tells the ASA that anyone who arrives on the inside interface gets natted, but it doesn't have anything to nat to because you're missing the global statement.



HTH, John *** Please rate all useful posts ***
New Member

Re: Internet connectivity issue with firewall

I completly overlooked that. Thank you for the quick reply everyone, I will go test it right now!

Thanks again!

New Member

Re: Internet connectivity issue with firewall

Worked !!!

Thanks everyone!