We have two private line T-1s coming in from customers that directly connect to our network and we decided we needed to put a firewall up between their networks and ours even though there is no public traffic traversing any of these connections. The two Ts land on a 25XX that connect to our 506E which then connects to another 25XX that is inside our network. All NATing is disabled so that connectivity to remote servers can still be reached. We thought we had everything in place but when telneting in to some of our remote sites inside our network and then pinging out from them the ping died at the inside of the pix, but we could ping to those sites from the outside of the network/pix. (Since I'm not on site and this has to be an off-hours installation it has limited my window of opportunity to work on this project). I think I have the problem figured out but wanted to see if I could get some feedback here?
25XX on the outside
S0 10.31.X.X
S1 10.29.X.x
E0 172.20.50.1
25XX on the inside
E0 172.20.51.1
E1 192.1.1.1
Remote site routers all connected via EIGRP to the 25XX
S0 172.20.x.x
E0 192.x.x.x
Here is a copy of the pix config that sits :
PIX Version 6.3(3)
interface ethernet0 10full
interface ethernet1 10full
nameif ethernet0 outside security0
nameif ethernet1 inside security100
enable password xxxxx
passwd xxxx
hostname mahc-gate3
domain-name ma-hc.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
access-list private permit ip any any
access-list private permit gre any any
access-list private permit icmp any any
pager lines 24
mtu outside 1500
mtu inside 1500
ip address outside 172.20.50.2 255.255.255.0
ip address inside 172.20.51.2 255.255.255.0
ip audit info action alarm
ip audit attack action alarm
pdm history enable
arp timeout 14400
static (inside,outside) 172.20.51.0 172.20.51.0 netmask 255.255.255.0 0 0
static (inside,outside) 192.0.0.0 192.0.0.0 netmask 255.0.0.0 0 0
access-group cmh-csm in interface outside
route inside 0.0.0.0 0.0.0.0 172.20.51.1 1
route outside x.0.0.0 255.0.0.0 172.20.50.1
route outside 10.0.0.0 255.0.0.0 172.20.50.1
route outside x.x.x.0 255.255.255.0 172.20.50.1
route outside x.x.x.0 255.255.255.0 172.20.50.1
route outside x.x.0.0 255.255.0.0 172.20.50.1
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 uauth 0:05:00 absolute
aaa-server TACACS+ protocol tacacs+
aaa-server RADIUS protocol radius
http server enable
http 192.0.0.0 255.255.255.255 inside
no snmp-server location
no snmp-server contact
snmp-server community public
no snmp-server enable traps
floodguard enable
My thought is that I should have opened up the static command:
static (inside,outside) 172.20.51.0 172.20.51.0 netmask 255.255.255.0 0 0
And have it read 172.20.0.0 leaving out the 51 block since when pinging the remote routers 172 network dies at the pix since it isn't in the 172.20.51.0 network?
My other question is why I had to put route outside commands in to the PIX instead of just using the default route out? Before I put those commands in to the pix we could not ping out past the EO connected to the outside int on the pix.
Before i go back out to implement I wanted to get some sort of feedback re this problem.
Thanks again!!
