Question

NAT through ASA

Asked by: fgasimzade

Can any explain mne please, whey having this config:

global (outside-Baku) 1 interface
global (outside-Ganja) 2 interface
global (remote-access) 3 interface
nat (remote-access) 3 access-list nat-vpn-internet
nat (inside-Bct) 2 access-list nat-ganja
nat (inside-Bct) 1 access-list nat

I have the following nat translation:

gyd-asa# sh nat remote-access outside-baku
  match ip remote-access 192.168.121.0 255.255.255.0 outside-Baku any
    dynamic translation to pool 3 (No matching global)
    translate_hits = 214, untranslate_hits = 0

The same is for outside-ganja interface. But, there is no translation from remote-access to inside-BCT. Isn't it weird? Thank you in advance!

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Asked On
2009-10-21 at 23:13:13ID24833428
Topics

Cisco PIX Firewall

,

Miscellaneous Networking

,

Virtual Private Networking (VPN)

Participating Experts
2
Points
500
Comments
9

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Answers

 

by: PeteLongPosted on 2009-10-22 at 02:39:49ID: 25632236

You are using conditional (or destination NAT)

the public ip of outbound traffic is dependant on it being delared "Ineresting" with an access control lists those lists being,  access-list ganga, access-list nat and access-list nat-vpn-internet).

 

 

by: rsivanandanPosted on 2009-10-22 at 04:24:14ID: 25632812

>nat (inside-Bct) 1 access-list nat

Means traffic coming ingress to the interface 'inside-Bct' and if it matches the access-list 'nat' THEN;

>global (outside-Baku) 1 interface

When it goes out the interface 'outside-Baku', the it'll use the ip address assigned on the interface 'outside-Baku' as source address.

Similar for all others as well.

Cheers,
rsivanandan

 

by: fgasimzadePosted on 2009-10-22 at 04:27:58ID: 25632846

rsivanandan:

I understand this )) nat 1 maps to global 1. But what about nat 3? How does it match to outside-baku

 

by: rsivanandanPosted on 2009-10-22 at 07:37:03ID: 25634723

>>global (remote-access) 3 interface
>>nat (remote-access) 3 access-list nat-vpn-internet

This one right?

This doesn't look corret and I don't even think this is doing anything.

The number 1, 2, 3 etc denotes the order in which the nat decisions are made.

The nat (remote-access) might be correct, but the corresponding global statement should have an outgoing interface.

Cheers,
rsivanandan

 

by: fgasimzadePosted on 2009-11-06 at 04:36:53ID: 25758565

Solved

 

by: rsivanandanPosted on 2009-11-06 at 05:22:38ID: 25758810

fgasimzade,

  I think we answered what you asked, what else was there to solve from the question?

Cheers,
rsivanandan

 

by: rsivanandanPosted on 2009-11-08 at 17:10:28ID: 25772855

http:#25632812

http:#25634723

Clearly answers the question posted. I recommend 3.

Cheers,
rsivanandan

20120131-EE-VQP-002

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