Avatar of eynn
eynnFlag for United States of America asked on

no dns through pix

I am trying setup a Cisco Pix 501 behind a speedstream dsl router. The DSlL router is set to server Ip addresses via dhcp and has a LAN side IP of 192.168.254.254. I've set the Pix to serve dhcp addresses on it's LAN side in the range 192.168.1.20. I can ping the Internet, but cannot ping any URL's from behind the pix. I have manually set 2 DNS servers on the pix, one being the dsl router and one being a public server (4.2.2.2) What do I need to do to get dns resolution on the lan side of the pix? I will post the current config below.

Current config:

Bowring# show config
: Saved
: Written by enable_15 at 11:41:07.182 UTC Sat May 24 2008
PIX Version 6.3(5)
interface ethernet0 auto
interface ethernet1 100full
nameif ethernet0 outside security0
nameif ethernet1 inside security100
enable password &.encrypted
passwd &.encrypted
hostname Bowring
domain-name Home
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
names
pager lines 24
mtu outside 1500
mtu inside 1500
ip address outside 192.168.254.253 255.255.255.0
ip address inside 192.168.1.1 255.255.255.0
ip audit info action alarm
ip audit attack action alarm
pdm location 192.168.1.5 255.255.255.255 inside
pdm history enable
arp timeout 14400
nat (inside) 0 0.0.0.0 0.0.0.0 0 0
route outside 0.0.0.0 0.0.0.0 192.168.254.254 1
timeout xlate 3:00:00
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 192.168.1.5 255.255.255.255 inside
http 0.0.0.0 0.0.0.0 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 192.168.1.20-192.168.1.50 inside
dhcpd dns 192.168.254.254 4.2.2.2
dhcpd lease 3600
dhcpd ping_timeout 750
dhcpd enable inside
terminal width 80
Cisco

Avatar of undefined
Last Comment
eynn

8/22/2022 - Mon
SOLUTION
tlowejr

Log in or sign up to see answer
Become an EE member today7-DAY FREE TRIAL
Members can start a 7-Day Free trial then enjoy unlimited access to the platform
Sign up - Free for 7 days
or
Learn why we charge membership fees
We get it - no one likes a content blocker. Take one extra minute and find out why we block content.
See how we're fighting big data
Not exactly the question you had in mind?
Sign up for an EE membership and get your own personalized solution. With an EE membership, you can ask unlimited troubleshooting, research, or opinion questions.
ask a question
ASKER
eynn

that didn't help-what dns info are you suggesting I get from the provider? i already have their dns server info.
tlowejr

On your machine can you ping 4.2.2.2?  If so try to put in your providers dns information dhcpd dns x.x.x.x  make sure you run
no dhcpd dns 192.168.254.254 4.2.2.2 first
ASKER
eynn

I can ping 4.2.2.2 (and other Internet ip's) from the pix but not from the pc behind it.
This is the best money I have ever spent. I cannot not tell you how many times these folks have saved my bacon. I learn so much from the contributors.
rwheeler23
ASKER CERTIFIED SOLUTION
eynn

Log in or sign up to see answer
Become an EE member today7-DAY FREE TRIAL
Members can start a 7-Day Free trial then enjoy unlimited access to the platform
Sign up - Free for 7 days
or
Learn why we charge membership fees
We get it - no one likes a content blocker. Take one extra minute and find out why we block content.
See how we're fighting big data
Not exactly the question you had in mind?
Sign up for an EE membership and get your own personalized solution. With an EE membership, you can ask unlimited troubleshooting, research, or opinion questions.
ask a question