ASA 5505 PAT

Answered Question
Sep 28th, 2010
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Hello everyone!

Trying to set up ASA5505 as a secondary gateway to be used exclusively by couple of users.


pb-gw2# sh run

: Saved


ASA Version 8.0(2)


hostname pb-gw2

enable password mjgSKfuQzL4x1LLu encrypted



interface Vlan1

nameif inside

security-level 100

ip address


interface Vlan2

nameif outside

security-level 0

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

pager lines 24

mtu inside 1500

mtu outside 1500

icmp unreachable rate-limit 1 burst-size 1

asdm image disk0:/asdm-602.bin

no asdm history enable

arp timeout 14400


global (outside) 10 interface

nat (inside) 10

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

dynamic-access-policy-record DfltAccessPolicy

aaa authentication ssh console LOCAL

aaa authentication http console LOCAL

http server enable

http inside

no snmp-server location

no snmp-server contact

snmp-server enable traps snmp authentication linkup linkdown coldstart

no crypto isakmp nat-traversal

telnet timeout 5

ssh inside

ssh timeout 5

console timeout 0

threat-detection basic-threat

threat-detection statistics port

threat-detection statistics protocol

threat-detection statistics access-list


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 netbios

  inspect rsh

  inspect rtsp

  inspect skinny

  inspect esmtp

  inspect sqlnet

  inspect sunrpc

  inspect tftp

  inspect sip

  inspect xdmcp


service-policy global_policy global

username admin password RS6hkLNrh/9fCzGC encrypted privilege 15

prompt hostname context


: end



I want to use NAT overload from internal network to external using ASA's external IP address

Problem is that when I set up network adapter on my laptop and use inside interface as a default gateway, I cannot ping external hosts (for example, but can browse internet.

Please advise, may be there is something wrong in config? Config was written manually in CLI, without ASDM.

Thanks in advance

Correct Answer by Jennifer Halim about 6 years 5 months ago

Yes, please kindly add icmp inspection:

policy-map global_policy

  class inspection_default

     inspect icmp

Hope that helps.

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Overall Rating: 5 (1 ratings)
Correct Answer
Jennifer Halim Tue, 09/28/2010 - 04:25
User Badges:
  • Cisco Employee,

Yes, please kindly add icmp inspection:

policy-map global_policy

  class inspection_default

     inspect icmp

Hope that helps.


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