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ASA 5505: No internet with a static IP

EjlskovCisco
Level 1
Level 1

I've having a problem with our company ASA5505 router.

We recently moved to a new adress, so everything had to be set up again. I have a static IP, submask and gateway from our new ISP. The router have been factory reset before moving. We have betweeen 10-20 employees on our LAN in the office. In an attempt to make things easier I have changed the internal IP (and IP range) to 10.0.200.1 with a range from 10.0.200.5 - 10.0.200.100 as our NAS/printer/plotter have IPs within this range.

I can ping machines on the internal IPs and in ASDM the Outside interface is show as "up" with a green arrow. But there still isn't any internet connection. The only thing I haven't tried (because people need the current network to be online) is changing

"route inside 0.0.0.0 0.0.0.0 62.242.X.X 1" to "route outside 0.0.0.0 0.0.0.0 62.242.X.X 1"

Can you guys see if anything else should be changed for this to work? I have recieved a primary and secondary DNS adress as well, but I'm in doubt as to were I'm supposed to enter these (Using ASDM Version 6.3). I would like everything "Behind" the router to be run by DHCP.

Here is the running config:

ASA Version 8.2(2)

!

hostname ciscoasa

enable password X

passwd X

names

!

interface Vlan1

nameif inside

security-level 100

ip address 10.0.200.1 255.255.255.0

!

interface Vlan2

nameif outside

security-level 0

ip address 62.242.X.X 255.255.255.252

!

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 domain-lookup inside

pager lines 24

logging asdm informational

mtu inside 1500

mtu outside 1500

no failover

icmp unreachable rate-limit 1 burst-size 1

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 62.242.X.X 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

timeout tcp-proxy-reassembly 0:01:00

dynamic-access-policy-record DfltAccessPolicy

http server enable

http 10.0.200.0 255.255.255.0 inside

no snmp-server location

no snmp-server contact

snmp-server enable traps snmp authentication linkup linkdown coldstart

crypto ipsec security-association lifetime seconds 28800

crypto ipsec security-association lifetime kilobytes 4608000

telnet timeout 5

ssh timeout 5

console timeout 0

dhcpd dns 194.239.X.X 193.162.X.X

dhcpd auto_config outside

!

dhcpd address 10.0.200.5-10.0.200.100 inside

dhcpd dns 194.239.X.X 193.162.X.X interface inside

dhcpd enable 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

Cryptochecksum:28ad57e19743b0f3ca5b728c6ac89c23

: end

4 Replies 4

John Blakley
VIP Alumni
VIP Alumni

Dennis,

Try to ping the gateway from the ASA. If that's successful, try to ping 4.2.2.1 from a workstation. If that works, then it's a dns issue somewhere. If it does not work, it's a nat issue. If you can't ping it from the ASA, make sure that the new ISP has bridged the modem/router that they provide. I'm assuming this is a cable/dsl connection, and if that's the case I'm leaning toward the modem/router not being bridged.

HTH,
John

*** Please rate all useful posts ***

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

Hi John.

Thank you for that checklist! I will have to wait untill after hours to test it though. The connection is actual a fiber. It's a dualfiber cable being converted by a Raycore box with only a RJ45 output named "LAN". I assume, maybe incorrectly, that this box only converts the signal. This would make the 5505 the only router connected. Image attached below.

Thank you,

Dennis

EjlskovCisco
Level 1
Level 1

Ok, so now I tried setting up an outside route with the provided gateway adress. I still can't ping outside from my machine, that is, untill I change the DNS on my own machine. Suddenly I got internet along with NAS/printer and so on.

So my problem is getting the 5505 to supply my machines a DNS adress automaticly. Any tips as to where the correct place for the DNS adress is?

Thanks,

Dennis

EjlskovCisco
Level 1
Level 1

Ok, got everything working now.

Under Configuration -> Device management -> DNS - > DNS Client. Here I configured the DNS setup as one group and under DNS lookup I enabled DNS for the inside interface and added the primary and secondary DNS fra my ISP. Voilá, internet and network funktioning.

Thought I would add the solution for anyone stumbeling over this post later on. Now I just need to setup VPN for the first time ever :S

Dennis

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