05-30-2007 07:20 AM - edited 03-05-2019 04:22 PM
I have two devices I need to connect and allow one-way communication between...a 2611 router and a PIX 501 Firewall.
On the network behind the 2611, the IP schema is this (IP/SUB/GATE) (10.20.30.x/255.255.0.0/10.20.30.1)
On the network behind the PIX, the IP schema is this (IP/SUB/GATE) (192.168.1.x/255.255.255.0/192.168.1.21)
The PIX is configured for its own internal network and is used as the primary device between its network and the outside world.
The 2611 has not yet been configured, but I'm hoping to be able to configure it to act as a security device for our network.
I have not yet performed any configuration on either of the devices that is necessary to "connect" the two networks. I need to be able to have one-way communication between one computer on the 2611 network (10.20.30.218) and one computer on the PIX network (192.168.1.1) on one specific port (8234).
Is it possible to accomplish this with simply entering the appropriate commands on both devices and if so, how?
I've had a little bit of exposure to the 26xx line, but have no experience at all with any PIX devices. Just can't seem to figure out the Device Manager on the PIX.
Can anyone help me out with the commands necessary to facilitate this configuration? It would be greatly appreciated.
Thank you.
05-30-2007 09:13 AM
Anyone...
Buehler...
Buehler...
Buehler...
8^)>
05-30-2007 11:24 AM
I think I have some of it figured out on the 2611 side, but I'm struggling with the PIX side of things.
Is there anyone out there in good ol' cyberspace that can assist with the configuration of the PIX?
Thanx.
05-30-2007 11:49 AM
Post your existing pix config.
05-30-2007 02:27 PM
Here's the existing configuration...
PIX Version 6.3(4)
interface ethernet0 auto
interface ethernet1 100full
nameif ethernet0 outside security0
nameif ethernet1 inside security100
enable password **************** encrypted
passwd **************** encrypted
hostname pixfirewall
domain-name ciscopix.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 outside_access_in permit tcp any interface outside eq 3389
access-list outside_access_in permit tcp any eq pop3 any eq pop3
access-list outside_access_in permit tcp any eq 9100 any eq 9100
access-list inside_outbound_nat0_acl permit ip any 192.168.1.64 255.255.255.224
pager lines 24
mtu outside 1500
mtu inside 1500
ip address outside 61.x.x.59 255.255.255.248
ip address inside 192.168.1.21 255.255.255.0
ip audit info action alarm
ip audit attack action alarm
ip local pool vpnpool 192.168.1.71-192.168.1.80
pdm location 192.168.1.1 255.255.255.255 inside
pdm location 216.x.x.185 255.255.255.255 outside
pdm location 55.x.x.136 255.255.255.255 outside
pdm location 194.171.25.88 255.255.255.255 outside
pdm location 194.239.214.118 255.255.255.192 outside
pdm location 192.168.1.64 255.255.255.224 outside
pdm location 192.168.1.22 255.255.255.255 inside
pdm logging informational 100
pdm history enable
arp timeout 14400
global (outside) 1 interface
nat (inside) 0 access-list inside_outbound_nat0_acl
nat (inside) 1 0.0.0.0 0.0.0.0 0 0
static (inside,outside) tcp interface 3389 192.168.1.1 3389 netmask 255.255.255.255 0 0
static (inside,outside) 192.168.1.22 192.168.1.22 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 61.26.241.60 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 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 55.155.192.136 255.255.255.255 outside
http 194.171.25.88 255.255.255.255 outside
http 194.239.214.118 255.255.255.192 outside
http 192.168.1.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server community public
no snmp-server enable traps
floodguard enable
sysopt connection permit-pptp
telnet timeout 5
ssh timeout 5
console timeout 0
vpdn group PPTP-VPDN-GROUP accept dialin pptp
vpdn group PPTP-VPDN-GROUP ppp authentication mschap
vpdn group PPTP-VPDN-GROUP ppp encryption mppe auto required
vpdn group PPTP-VPDN-GROUP client configuration address local vpnpool
vpdn group PPTP-VPDN-GROUP pptp echo 60
vpdn group PPTP-VPDN-GROUP client authentication local
vpdn username administrator password *********
dhcpd lease 3600
dhcpd ping_timeout 750
dhcpd auto_config outside
terminal width 80
Cryptochecksum:********************************
Hope that helps.
Thanx.
05-31-2007 05:45 AM
Did that info help at all?
Thanx.
05-31-2007 06:05 AM
So is this the topology?
10.20.30.x ---- 2611 ---- Internet ---- pix ---- 192.168.1.x
What are you looking to do exactly? Do you want to create a vpn tunnel between the router and the pix?
Or do you simply want to reach the machine behind the pix via the outside address of the pix? If so all you need is this in the pix.
static (inside,outside) tcp interface 8234 192.168.1.1 8234 netmask 255.255.255.255
access-list outside_access_in permit tcp host
05-31-2007 07:05 AM
No, actually, the topology you detailed is incorrect. Here's what we are dealing with...
10.20.30.x --- 2611 - - PIX --- 192.168.1.x
You see, the 2611 and the PIX are in the same phone closet, but link to different networks. If at all possible, I need to link the 2611 and the PIX directly so that a computer on the 2611 can send information to a computer on the PIX.
Thanx.
05-31-2007 08:00 AM
Ok, so are you connecting the router to the pix outside interface? Make sure both interfaces are on the same network. Make sure you have a route on 2611 to route to 192.168.1.0 via outside pix interface. Add these statements to the pix. The first is called identity nat, and the second will allow the access from 10. host and your 192. host on tcp port 8234. Post your router config too if you need help there.
static (inside,outside) 192.168.1.1 192.168.1.1 netmask 255.255.255.255
access-list outside_access_in permit tcp host 10.20.30.218 host 192.168.1.1 eq 8234
05-31-2007 08:53 AM
Well, apparently I did something wrong in the configuration of the 2611 so I've reset the router completely...back to empty settings.
Keep in mind, the 2611 is simply going to act as a firewall for our side of the network.
I have a line running from our existing network (10.20.30.x) to the ETH0/0 port on the router and I was assuming I could run another line from the ETH0/1 port to the PIX on the other network.
I guess I just need to know the easiest way to accomplish this with any combination of these two devices (2611 and PIX) to allow traffic from a computer on the 2611 side to a computer on the PIX side, but not the other way.
Thanx again.
05-31-2007 09:04 AM
-You're losing me...so you want this?
Internet --- PIX --- 192.168.1.x --- 2611 ---10.20.30.x
-Do you have another router inside your pix?
"I have a line running from our existing network (10.20.30.x) to the ETH0/0 port on the router and I was assuming I could run another line from the ETH0/1 port to the PIX on the other network."
-The pix only has 2 interfaces, you need outside for internet and inside for 192.168.1.0 network. Therefore you would not plug the router directly to the pix. The above would work but you need a way to route to 10 network via 2611 router.
05-31-2007 10:51 AM
Okay...I guess that was a little confusing. Take a look at the attached image and hopefully that will straighten things out.
The PIX controls 192.168.1.x
The 2611 controls 10.20.30.x
They are two separate networks, but both devices are in the same phone closed. I am just looking for a way to "link" the two networks, using any combination of the aformentioned 2611 and PIX, in a manner that will allow one computer on the 10.20.30.x (2611) network to send data to a computer on the 192.168.1.x (PIX) network in a one-way fashion.
Thanx again.
05-31-2007 11:07 AM
How many interfaces are there on the 2611? If you have a free one you just need to connect this to a switch on the 192. network. But then you have to deal with how you are going to route to the 10. network from the 192. network. You could at that point add a route on the host.
05-31-2007 11:20 AM
On the 2611, there are two Ethernet interfaces...Eth0/0 and Eth0/1.
On the PIX, there are five Ethernet ports, one WAN port and four LAN ports.
I'm going to assume I could just connect a patch cord between the 2611 and the PIX. If this is the case, what would be the commands I need to issue to both devices to accommodate the necessary traffic flow I detailed earlier?
Thanx again.
Also, take into consideration that on the 2611, I can connect via console and enter the commands necessary via the command line. However, on the PIX, I am limited to the web-based GUI interface.
05-31-2007 11:56 AM
But you're already using both interfaces on the 2611.
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