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12.15.2007 at 01:42PM PST, ID: 23025767
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8.2

NAT issue

Asked by d3m00n in Cisco PIX Firewall, Network Routers, Virtual Private Networking (VPN)

Tags: ,

Hi,

I have a little problem with NAT configuration.
Here is my network structure:

ISP ROUTER
|
|
ASA5505 EXT(A.B.130.130/30)
ASA5505 INT(A.B.244.0/24)
|
|
OTHER ROUTERS(Example: A.B.244.101)

1. Internal hosts can communicate with Internet.
2. All network A.B.244.0/24 is routed on ISP router to my router.(When Linksys router is connected instead of ASA everything is OK)

But I would like to replace it with ASA. I believe that problem is with NAT( probably here: global (outside) 1 interface) but how I should set up NAT rule to make possible for external servers to comunicate with my servers behind ASA?

May I pleae for some suggestion?


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: Saved
:
ASA Version 7.2(2)
!
hostname fw
domain-name domain.com
enable password XXXXXXXXXXXXXXX encrypted
names
!
interface Vlan1
 nameif inside
 security-level 0
 ip address A.B.244.1 255.255.255.0
!
interface Vlan2
 nameif outside
 security-level 0
 ip address A.B.130.130 255.255.255.252
!
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 XXXXXXXXXXXXXXXXXXXXXXXX encrypted
ftp mode passive
dns server-group DefaultDNS
 domain-name domain.com
same-security-traffic permit inter-interface
same-security-traffic permit intra-interface
access-list nonat_out extended permit ip any A.B.244.0 255.255.255.0
access-list nonat_out extended permit ip A.B.244.0 255.255.255.0 any
access-list outside_access_in extended permit ip any host A.B.130.130
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-522.bin
no asdm history enable
arp timeout 14400
global (outside) 1 interface
nat (inside) 1 0.0.0.0 0.0.0.0
nat (outside) 1 access-list nonat_out
route inside 0.0.0.0 0.0.0.0 A.B.244.1 2
route outside 0.0.0.0 0.0.0.0 A.B.130.129 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
username admin password XXXXXXXXXXXXXXXXX encrypted privilege 15
aaa authentication ssh console LOCAL
http server enable
http A.B.244.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart
telnet timeout 5
ssh A.B.244.0 255.255.255.0 inside
ssh 0.0.0.0 0.0.0.0 outside
ssh timeout 5
console timeout 0
dhcpd auto_config outside
!
dhcpd address A.B.244.10-A.B.244.50 inside
dhcpd dns A.B.250.120 interface inside
dhcpd enable inside
!
 
!
class-map inspection_default
 match default-inspection-traffic
!
!
policy-map type inspect dns preset_dns_map
 parameters
  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
Cryptochecksum:a2a2d44104bca10bf95f64aff0db45f6
: end
fw#
[+][-]12.15.2007 at 04:16PM PST, ID: 20479256

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[+][-]12.16.2007 at 04:52AM PST, ID: 20480388

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[+][-]12.16.2007 at 04:56AM PST, ID: 20480394

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[+][-]12.16.2007 at 06:56AM PST, ID: 20480598

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[+][-]12.16.2007 at 09:50AM PST, ID: 20481095

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About this solution

Zones: Cisco PIX Firewall, Network Routers, Virtual Private Networking (VPN)
Tags: asa, nat
Sign Up Now!
Solution Provided By: d3m00n
Participating Experts: 1
Solution Grade: A
 
 
 
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