PIX 501, client not accessing internet

Posted on 2006-05-03
Last Modified: 2013-11-16

I have currently having problems with intergrating a Cisco PIX 501 firewall in that clients can not access the internet.

I have a Cisco 827H router confirmed to and the inside network confirmed to

I can ping an outside ip address from PIX 501 but not from a client.

Result of firewall command: "show config"
: Saved
: Written by enable_15 at 13:14:58.553 GMT/BDT Wed May 3 2006
PIX Version 6.3(5)
interface ethernet0 10full
interface ethernet1 100full
nameif ethernet0 outside security0
nameif ethernet1 inside security100
enable password 8Ry2YjIyt7RRXU24 encrypted
passwd 2KFQnbNIdI.2KYOU encrypted
hostname pixfirewall
clock timezone GMT/BST 0
clock summer-time GMT/BDT recurring last Sun Mar 1:00 last Sun Oct 2:00
fixup protocol dns maximum-length 512
fixup protocol ftp 21
fixup protocol h323 h225 1720
fixup protocol h323 ras 1718-1719
fixup protocol http 80
fixup protocol rsh 514
fixup protocol rtsp 554
fixup protocol sip 5060
fixup protocol sip udp 5060
fixup protocol skinny 2000
fixup protocol smtp 25
fixup protocol sqlnet 1521
fixup protocol tftp 69
pager lines 24
mtu outside 1500
mtu inside 1500
ip address outside
ip address inside
ip audit info action alarm
ip audit attack action alarm
pdm logging informational 100
pdm history enable
arp timeout 14400
global (outside) 1 netmask
nat (inside) 1 0 0
route outside 1
timeout xlate 0:05:00
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 rpc 0:10:00 h225 1:00:00
timeout h323 0:05:00 mgcp 0:05:00 sip 0:30:00 sip_media 0:02:00
timeout sip-disconnect 0:02:00 sip-invite 0:03:00
timeout uauth 0:05:00 absolute
aaa-server TACACS+ protocol tacacs+
aaa-server TACACS+ max-failed-attempts 3
aaa-server TACACS+ deadtime 10
aaa-server RADIUS protocol radius
aaa-server RADIUS max-failed-attempts 3
aaa-server RADIUS deadtime 10
aaa-server LOCAL protocol local
http server enable
http inside
no snmp-server location
no snmp-server contact
snmp-server community public
no snmp-server enable traps
floodguard enable
telnet timeout 5
ssh timeout 5
console timeout 0
dhcpd address inside
dhcpd dns
dhcpd lease 3600
dhcpd ping_timeout 750
dhcpd auto_config outside
dhcpd enable inside
terminal width 80

Question by:Glenhomes
    1 Comment
    LVL 9

    Accepted Solution

    Your global NAT is incorrectly configured, run the following commands on the PIX:

    clear global
    global (outside) 1 interface
    clear xlate

    Also by default ICMP is not permitted thru the PIX, so if you want to be able to ping from the clients side, add the following commands:

    access-list acl_out permit icmp any any echo-reply
    access-group acl_out in interface outside


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