I have been messing with this problem for some time now, without really making much progress. Here is my problem (see attached network diagram for details):
I have a Westell DSL router that gets the dynamic external IP from Verizon. Its internal IP is 10.10.2.1. It is configured for static NAT to 10.10.2.2, which is the Pix's outside interface.
The Pix's inside interface is 10.10.1.101. I have Web server at 10.10.1.109.
I want to access the Web server from the Web with my public dynamic IP address. I figured that the Westell router would NAT all incoming traffic, replace the external IP with 10.10.2.2 and forward them to the Pix. A static translation rule (10.10.2.2. to 10.10.1.109) should then take care of the rest. I can't it to work. I can detect the request packet on the outside interface, but they don't make it through the firewall.
While playing around with this, to simplify things, I added a workstation into the 10.10.2.x network and tried to get access to the web server from there, eliminating the router as a potential source of error. The behavior is the same. The firewall seems to be blocking.
Any help is appreciated.
PIX Version 6.3(3)
interface ethernet0 auto
interface ethernet1 100full
nameif ethernet0 outside security0
nameif ethernet1 inside security100
enable password encrypted
passwd encrypted
hostname pixfirewall
domain-name
clock timezone EST -5
clock summer-time EDT recurring
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
access-list 101 permit tcp any host 10.10.2.2 eq 8081
access-list 101 permit icmp any any
pager lines 24
mtu outside 1500
mtu inside 1500
ip address outside 10.10.2.2 255.255.255.0
ip address inside 10.10.1.101 255.255.255.0
ip audit info action alarm
ip audit attack action alarm
pdm location 10.10.1.109 255.255.255.255 inside
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
static (inside,outside) tcp 10.10.2.2 8081 10.10.1.109 www netmask
255.255.255.255 0 0
access-group 101 in interface outside
route outside 0.0.0.0 0.0.0.0 10.10.2.1 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 10.10.1.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server community public
no snmp-server enable traps
floodguard enable
telnet 10.10.1.0 255.255.255.0 inside
telnet timeout 50
ssh 0.0.0.0 0.0.0.0 outside
ssh 10.10.1.0 255.255.255.0 inside
ssh timeout 30
console timeout 0
dhcpd address 10.10.1.170-10.10.1.199 inside
dhcpd dns 10.10.2.1 10.10.2.1
dhcpd lease 36000
dhcpd ping_timeout 750
dhcpd domain
dhcpd auto_config outside
dhcpd enable inside
terminal width 80
Cryptochecksum:: end
