I am trying to get a PIX working with an ADSL modem. It seems that the modem has a fixed IP of 192.168.0.1 and is configured with a dhcp client using http on this address. Having been configured with the ISP etc the modem then 'remembers' the MAC address of the client and then using dhcp renews the clients IP address with the ISP allocated (fixed in this case) IP address with a default gateway of one greater.
I have never been able to get the pix to get an IP address from the modem. So I have developed 2 configs with fixed IP addresses, one for configuration one for operation. This mostly seems to work except that I cannot ping the modem on 192.168.0.1 from the PIX itself, whilst I can ping it from a PIX client on the secure side of the PIX. I can't understand this I hope someone might be able to help. I enclose a (anonimised) version of my (operational) config for info.
Building configuration...
: Saved
:
PIX Version 6.2(2)
nameif ethernet0 outside security0
nameif ethernet1 inside security100
enable password ********* encrypted
passwd ********* encrypted
hostname MyFW
domain-name mydomain
fixup protocol ftp 21
fixup protocol http 80
fixup protocol h323 h225 1720
fixup protocol h323 ras 1718-1719
fixup protocol ils 389
fixup protocol rsh 514
fixup protocol rtsp 554
fixup protocol smtp 25
fixup protocol sqlnet 1521
fixup protocol sip 5060
fixup protocol skinny 2000
names
name 192.168.10.1 MyServer
name x.x.x.x+1 ADSLMODEM
access-list outside_access_in permit tcp any any eq smtp
access-list outside_access_in permit icmp any any unreachable
access-list outside_access_in permit icmp any any time-exceeded
access-list outside_access_in permit icmp any any echo-reply
pager lines 24
logging on
logging timestamp
logging trap warnings
logging host inside MyServer
interface ethernet0 10baset
interface ethernet1 10full
icmp permit any inside
mtu outside 1500
mtu inside 1500
ip address outside x.x.x.x 255.255.255.0
ip address inside 192.168.10.254 255.255.255.0
ip verify reverse-path interface inside
ip audit info action alarm
ip audit attack action alarm
pdm location 192.168.0.0 255.255.0.0 inside
pdm location 0.0.0.0 255.255.255.255 inside
pdm location 0.0.0.0 255.255.255.255 outside
pdm location myserver 255.255.255.255 inside
pdm location ADSLMODEM 255.255.255.255 outside
pdm location 192.168.0.1 255.255.255.255 outside
pdm location 192.168.0.0 255.255.255.255 outside
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) interface MyServer netmask 255.255.255.255 0 0
access-group outside_access_in in interface outside
route outside 0.0.0.0 0.0.0.0 ADSLMODEM 1
timeout xlate 0:05:00
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 rpc 0:10:00 h323 0:05:00 si
p 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 192.168.10.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server community public
snmp-server enable traps
tftp-server inside myserver /
floodguard enable
no sysopt route dnat
telnet MyServer 255.255.255.255 inside
telnet timeout 5
ssh timeout 5
dhcpd lease 3600
dhcpd ping_timeout 750
dhcpd auto_config outside
terminal width 80
Cryptochecksum:xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
: end
[OK]
