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ASA 5510 initial Setup

Posted on 2008-06-21
7
1,582 Views
Last Modified: 2013-11-16
I'm having some trouble with the initial setup of a Cisco ASA 5510.  I'm unable to get the inside interface access to anything outside.  My first goal was to simply be able to browse the internet from the inside, but i've had no luck.  Any help would be greatly appreciated


here's the config:




: Saved
: Written by enable_15 at 07:02:59.603 UTC Sat Jun 21 2008
!
ASA Version 7.2(3)
!
hostname ciscoasa
domain-name default.pieceofjunk.com
enable password 8Ry2YjIyt7RRXU24 encrypted
names
!
interface Ethernet0/0
 nameif inside
 security-level 100
 ip address 10.2.10.1 255.255.255.0
!
interface Ethernet0/1
 nameif outside
 security-level 0
 ip address 192.168.168.5 255.255.255.0
!
interface Ethernet0/2
 shutdown
 no nameif
 no security-level
 no ip address
!
interface Ethernet0/3
 shutdown
 no nameif
 no security-level
 no ip address
!
interface Management0/0
 nameif management
 security-level 100
 ip address 192.168.1.1 255.255.255.0
 management-only
!
passwd 2KFQnbNIdI.2KYOU encrypted
ftp mode passive
dns server-group DefaultDNS
 domain-name default.pieceofjunk.com
same-security-traffic permit inter-interface
access-list icmp_ping extended permit icmp any any echo-reply
pager lines 24
logging asdm informational
mtu management 1500
mtu inside 1500
mtu outside 1500
 
icmp unreachable rate-limit 1 burst-size 1
asdm image disk0:/asdm-523.bin
no asdm history enable
arp timeout 14400
global (inside) 101 interface
nat (inside) 101 0.0.0.0 0.0.0.0
access-group icmp_ping in interface inside
access-group icmp_ping in interface outside
route outside 0.0.0.0 0.0.0.0 192.168.168.168 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
http server enable
http 192.168.1.0 255.255.255.0 management
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart
telnet timeout 5
ssh timeout 5
console timeout 0
dhcpd address 192.168.1.2-192.168.1.254 management
dhcpd enable management
!
dhcpd address 10.2.10.100-10.2.10.150 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:1d7a24930bced5a4ee33f59c539bc92e
ciscoasa(config)#

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Question by:jared_barnes
  • 5
7 Comments
 
LVL 7

Accepted Solution

by:
naughton earned 100 total points
ID: 21839088
try:

global (outside) 1 192.168.168.100-192.168.168.200
nat (inside) 1 10.2.10.0 255.255.255.0

the global can be a single address, or a range.  depending on your needs.
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LVL 57

Assisted Solution

by:Pete Long
Pete Long earned 400 total points
ID: 21844964
There should not be anything wrong with

global (inside) 101 interface
nat (inside) 101 0.0.0.0 0.0.0.0


However is the router IP address in your route statement correct?

route outside 0.0.0.0 0.0.0.0 192.168.168.168 1


Also heres a big problem

access-group icmp_ping in interface inside


This means allow only an echo reply outbound - ths is why nothing is working my friend

issue the following commands

no access-group icmp_ping in interface inside
no access-group icmp_ping in interface inside
wite mem
clear xlate

then retry :)

Pete


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LVL 57

Assisted Solution

by:Pete Long
Pete Long earned 400 total points
ID: 21844972
oops

I meant


no access-group icmp_ping in interface inside
access-list icmp_ping extended permit icmp any any echo-reply
wite mem
clear xlate

then retry

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LVL 57

Assisted Solution

by:Pete Long
Pete Long earned 400 total points
ID: 21844981
jesus I cant type!  :( prefix the second command with a "no" to remove it

no access-list icmp_ping extended permit icmp any any echo-reply
0
 
LVL 57

Assisted Solution

by:Pete Long
Pete Long earned 400 total points
ID: 21845002
Bascially you only allowed ping reply's outbound - once you apply an ACL to an interface (in this case, the inside interface) you DENY all other traffic.
With no ACLs applied to the inteface then traffic will flow outbound (becasue the inside interface is more trusted then the outside one (lookat your securty rating for the interfaces  inside=100 outside=0)

To make pings work you can remove the other ACLs and access-group commands and simply enter the following commands

policy-map global_policy
class inspection_default
inspect icmp

Then it will statefully inspect ICMP traffic - and you done need to allow icmp back in again the firewall will sort that out for you securely :)




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Author Closing Comment

by:jared_barnes
ID: 31469420
Thanks for your help!
0
 
LVL 57

Expert Comment

by:Pete Long
ID: 21865097
ThanQ
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