Cisco PIX Default Config but No Outside Access from Inside

Apologies if this is so basic.

I'm not able to route from the inside interface to the outside after restting a 506e to default factory configuration and making a few minor customizations.  It never worked with the factory defaults and I've now exhausted my little knowledge of how to reconfigure this properly.

I set the outside interface with an address on my local (working) subnet 10.100.100.0 and plugged it into Interface0.  I've confirmed the outside interface of the PIX is indeed pingable from my active production subnet.

I set the inside interface to provide DHCP in the 172.18.16.x range and added things like DNS and WINS that exist on my production subnet.  I've confirmed when I plug my laptop into Interface1 it gets a valid IP address from the PIX in the correct range; also correct are the DNS and WINS addresses.  So DHCP works.  And I can ping the PIX inside address.

So both sides work, but they don't apparently talk to each other.  However, any attempt to access anything on my 10.100.100.0 subnet fails.  It just times out.

Another clue, perhaps unrelated:  On the laptop (connected to the inside interface) I can browse to https://172.18.16.1 and, in fact, get a website security certificate error.  I click on "Continue to this website" and get prompted for the User name and Password which I enter as blank (first time).  I get the PDM 3.0 spalsh screen and allow pop-ups always.  I go to the new "popped up" browser window and it says "Loading PIX Device Manager. Please wait ..."  That's as far as it ever gets.

This PIX was working perfectly on another production subnet before I reset it to its factory defaults.  So I suspect it's my lack of knowledge and not something inherently broken with the device.

I've copied the configuration below.

Thanks very much.

RG

PIX Version 6.3(3)

interface ethernet0 auto
interface ethernet1 auto

nameif ethernet0 outside security0
nameif ethernet1 inside security100

enable password 8Ry2YjIyt7RRXU24 encrypted
passwd 2KFQnbNIdI.2KYOU encrypted
hostname pixfirewall

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 10.100.100.5 255.255.255.0
ip address inside 172.18.16.1 255.255.255.0
ip audit info action alarm
ip audit attack action alarm

pdm logging informational 100
pdm history enable

arp timeout 14400

global (outside) 1 interface
nat (inside) 1 0.0.0.0 0.0.0.0 0 0
route outside 0.0.0.0 0.0.0.0 172.18.16.1 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 uauth 0:05:00 absolute

aaa-server TACACS+ protocol tacacs+
aaa-server RADIUS protocol radius
aaa-server LOCAL protocol local

http server enable
http 172.18.16.0 255.255.255.0 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 172.18.16.100-172.18.16.199 inside
dhcpd dns 10.100.100.3
dhcpd wins 10.100.100.3
dhcpd lease 3600
dhcpd ping_timeout 750
dhcpd enable inside

terminal width 80

Cryptochecksum:3f4e069b93d51e226a9197f6a798553d
: end

pixfirewall(config)#