Cisco Pix home help :-)

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Soldato
Joined
18 Oct 2002
Posts
5,804
Location
Liverpool :-)
morning,

I'm hoping for a bit of help setting up a Pix 501 at home, I've set up a couple of Pix 501's in the past and I've bought this unit from Ebay, to refresh my knowledge and give me a bit more experience.

At the moment, I have an old P3 box running Smoothwall acting as a firewall in this config, working fine.

Virgin Modem -> Wireless Router -> SW -> Lan

I want to put the Pix in place of the SW, I know it's double nating but I'd like to keep it like this for the moment. Here is the very basic config at the moment, DHCP on the outside getting an IP from the wireless router, static on the inside and I've setup the PIX to give out IP's on the inside address.

PIX Version 6.3(4)
interface ethernet0 auto
interface ethernet1 100full
nameif ethernet0 outside security0
nameif ethernet1 inside security100
enable password Vnaj6708ywbgLFL7
encrypted passwd 2KFQnbNIdI.2KYOU encrypted
hostname pix
domain-name pix.com
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 dhcp setroute
ip address inside 192.168.2.1 255.255.255.0
ip audit info action alarm
ip audit attack action alarm
pdm history enable
arp timeout 14400
global (outside) 10 interface
nat (inside) 10 0.0.0.0 0.0.0.0 0 0
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 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 192.168.2.0 255.255.255.0 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 192.168.2.2-192.168.2.10 inside
dhcpd dns 192.168.2.1 192.168.1.1
dhcpd lease 3600
dhcpd ping_timeout 750
dhcpd enable inside
terminal width 80
Cryptochecksum:d50a8852a61db67a3bd028368e6258eb
: end

I can log into the Pix fine, but I can't get out onto the Internet. I've tried a route outside 0.0.0.0. 0.0.0.0 192.168.1.1 1 command and still nothing, I know I'm missing something really obvious here but I've been looking at if for a couple of hours now and I can't see the wood for the trees :)

Anyone got any ideas on what I'm missing?
 
Is the outside I/F getting an address from the router OK? Can you ping the router's LAN address from the PIX??

EDIT..... Have you got a static route on the wireless router pointing 192.168.2.0/24 to whatever the PIX's outside IP is?

EDIT AGAIN: Hmmm... maybe you dont need the route with NAT.
 
Last edited:
What about to the routers LAN interface - ICMP might be blocked across the router to the outside interface.

Also, are you pinging from the PC or the PIX??
 
Sorry I forgot to post back into this thread, I've got the pix up and running now but I could do with some help/advice on the access lists. What I'd like to do is only allow certain traffic out, say 80, 443, 110 for now.

I've been playing around with them and I'm getting a bit confused to be honest, am I right in thinking if I did:

access-list 2 permit tcp any any eq 80
access-list 2 permit tcp any any eq 443
access-list 2 permit tcp any any eq 110
access-list 2 deny ip any any
access-group 2 in interface inside

That would only allow the three types of traffic out and deny everything else?
 
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