ASA Question-Help needed

Unanswered Question
Oct 14th, 2008
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I have configured and integrated an ASA to my network.


I have 3 servers in my inside network,one of them is a proxy server which all other users use. The 3 servers have both public and private addresses.I have done two layers of nat,one on the ASA and the other on the router.

My inside users cannot ping the inside interface of the router neither can they browse.

I have attached the configs on the ASA and router.

Can someone please take a look at it and let me know where I got it wrong.

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JORGE RODRIGUEZ Thu, 10/16/2008 - 12:13
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Can you post a more complete asa sanatized config to get a better picture and see the nonat acls. You said that your inside users cannot get to the inside interface of the router facing asa outside interface and browse, if this is so you simply need a nat statement.


your asa already have this statement

global (outside) 1 interface

do you have these ?

nat (inside) 1 0 0


nat (inside ) 1



sameoj1881 Fri, 10/17/2008 - 01:22
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ASA Configs

static(inside,outside) x.x.103.5 x.x.101.5 netmask

static(inside,outside) x.x.103.250 x.x.101.250 netmask

static(inside,outside) x.x.103.2 x.x.101.2 netmask

access-list 100 extended permit icmp any any

access-list 100 extended permit tcp any host x.x.103.5 eq 80

access-list 100 extended permit tcp any host x.x.103.250 eq 80

access-list 100 extended permit tcp any host x.x.103.2 eq 25

int e0/1

access-group 100 in interface outside

access-list NO-NAT extended permit ip x.x.101.0 any

nat(inside) 1 access-list NO-NAT

global(outside) 1 interface

route outside x.x.103.7

Router Configs

access-list 10 permit x.x.103.0

ip nat inside source list 10 interface fa0/0 overlaod

ip nat inside source static tcp x.x.103.5 80 x.x.39.155 80

ip nat inside source static tcp x.x.103.250 80 x.x.39.156 80

ip nat inside source static tcp x.x.103.2 25 x.x.39.73 25

int fa0/0

ip nat outside

int fa0/1

ip nat inside

Fernando_Meza Thu, 10/16/2008 - 13:49
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Make sure you are not filtering out that traffic on the router by the use of access control lists ..?

I hope it helps .. please rate helpful posts

marchanamendon Tue, 10/21/2008 - 01:25
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You can make the configuration as simple,by controlling all the nat operation at the firewall and allow only routing in the router.It will make as simple the configuration.



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