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3 location MPLS through PIX firewalls

Posted on 2010-11-22
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Last Modified: 2012-05-10
We recently had our MPLS turned up.  The network includes 3 sites.  Our ISP provider One Comm has built the MPLS between our facilities and connection is confirmed through successful pings. I can ping the external IP addresses at each site, but not the internal addresses. (and each other site back to main as well)

I have a pix at each location with VPN, two clients and one server.  With that connection now being handled by the MPLS I don't need the VPN clients active.  The server will remain up for traveling employees.  

How do I allow each site to connect to the other two remote sites as though they were on a LAN?  I'm guessing some form of static address?  The goal is to be able to access the other two internal LAN's as though they were local at each site.

For this discussions purposes let's use these IP addresses:

Site 1:  Internal 192.168.0.1, external 72.2.2.2
Site 2:  Internal 192.168.1.1, external 73.3.3.3
Site 3:  Internal 192.168.2.1, external 74.4.4.4  


Thank you for the helps!
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Question by:fi3c
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Expert Comment

by:Cheever000
Comment Utility
If there is a router outside of the PIX it usually does the routing to the other networks there.  The PIX maintains the gateway of the router for traffic.  If the PIX is the edge device, then yes you would need statics to the other sites.  Another important consideration is the NO NAT required, even though you are sending it towards a public address there would not be NATs required.  
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Author Comment

by:fi3c
Comment Utility
At each location the ISP provider has another Cisco device in place.  These devices tie the MPLS together, as well as internet connections.  Our internet works fine and the VPN is re-established to allow access back to the HQ.  

My problem still remains, allowing our Pix's to communicate between the the other locations as though they were in the same LAN.

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Expert Comment

by:Cheever000
Comment Utility
If there is a different interface for the MPLS connection you would make a new route statement, route interfacename x.x.x.x y.y.y.y.y 1

where x is the private IP and y is the IP address of the routers interface for the MPLS, if it is the same interface as the internet gateway, your routes probably point to a remote host which would need removed and set the route outside to the gateway address for the private addresses, and the last item you would need is a no nat statment that will keep the traffic from being natted on its way towards the MPLS.  If want you could post a cleaned up config and we can help point out the changes needing to be made.
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Author Comment

by:fi3c
Comment Utility
Sorry for the delay!  Had an emergency on-site call yesterday afternoon.

Below is a cleaned up config of site 2 and 3.  If I can get these working I will be able to handle site 1.  FYI I am about a novice rating on Cisco configs, so don't be afraid to simplify it for me.  

Site 2 has a Pix 515
Site 3 has a pix 501

Each location uses one interface to connect outside.  My route outside points to the ISP provided gateway at each site.  


Site 2
User Access Verification

Password:
Type help or '?' for a list of available commands.
StillPix> enable
Password: ***********
StillPix# conf t
StillPix(config)# sh conf
: Saved
: Written by enable_15 at 11:39:42.722 UTC Mon Nov 22 2010
PIX Version 6.3(4)
interface ethernet0 auto
interface ethernet1 100full
interface ethernet2 100full
nameif ethernet0 outside security0
nameif ethernet1 inside security100
nameif ethernet2 intf2 security50
enable password XXXXXXX encrypted
passwd XXXXXXXXXXX encrypted
hostname site2
domain-name domain.local
fixup protocol dns maximum-length 512
fixup protocol ftp 21
fixup protocol h323 h225 1720
fixup protocol h323 ras 1718-1719
no fixup protocol http 80
fixup protocol rsh 514
fixup protocol rtsp 554
no fixup protocol sip 5060
no fixup protocol sip udp 5060
fixup protocol skinny 2000
no fixup protocol smtp 25
fixup protocol sqlnet 1521
fixup protocol tftp 69
names

access-list out permit tcp any any eq pptp
access-list out permit tcp any any eq 987
access-list out permit tcp any any eq 8000
access-list out permit tcp any any eq 9000
access-list out permit udp any any range 10000 20000
access-list out permit udp any any eq 5060
access-list out permit tcp any any eq 5222
access-list out permit tcp any any eq 6600
pager lines 24
mtu outside 1500
mtu inside 1500
mtu intf2 1500
ip address outside 72.2.2.162 255.255.255.248
ip address inside 192.168.4.1 255.255.255.0
no ip address intf2
multicast interface outside
multicast interface inside
ip audit info action alarm
ip audit attack action alarm
pdm location 192.168.4.0 255.255.255.0 inside
pdm history enable
arp timeout 14400
global (outside) 1 interface
nat (inside) 1 192.168.0.0 255.255.255.0 0 0
nat (inside) 1 0.0.0.0 0.0.0.0 0 0
static (inside,outside) 72.2.2.163 192.168.4.200 netmask 255.255.255.255 0 0
access-group out in interface outside
route outside 0.0.0.0 0.0.0.0 72.2.2.161 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 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 192.168.4.0 255.255.255.255 inside
no snmp-server location
no snmp-server contact
snmp-server community public
no snmp-server enable traps
floodguard enable
vpngroup ADIVPN dns-server 192.168.0.200
vpngroup ADIVPN wins-server 192.168.0.200
vpngroup ADIVPN default-domain domain.local
vpngroup ADIVPN split-tunnel ADIVPN_splitTunnelACL
vpngroup ADIVPN idle-time 1800
telnet 192.168.4.0 255.255.255.0 inside
telnet 192.168.0.0 255.255.255.0 inside
telnet timeout 30
ssh timeout 5
management-access inside
console timeout 0
dhcpd address 192.168.4.2-192.168.4.100 inside
dhcpd dns 64.65.210.6 64.65.296.6
dhcpd lease 3600
dhcpd ping_timeout 750
dhcpd domain domain.local
dhcpd enable inside
vpnclient server 71.1.1.58
vpnclient mode network-extension-mode
vpnclient vpngroup ADIVPN password ********
vpnclient enable
terminal width 80
Cryptochecksum:44270fa1e4eb8f4eb6e299af6a487874
StillPix(config)#

Site 3
User Access Verification

Password:
Type help or '?' for a list of available commands.
adipix50> enable
Password: ***********
adipix50# conf t
adipix50(config)# sh conf
: Saved
: Written by enable_15 at 01:16:27.850 UTC Fri Jan 1 1993
PIX Version 6.3(3)
interface ethernet0 auto
interface ethernet1 100full
nameif ethernet0 outside security0
nameif ethernet1 inside security100
enable password XXXXXXXXXX encrypted
passwd XXXXXXXXXXX encrypted
hostname adipix50
domain-name domain.local
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 inbound permit icmp any any
access-list inbound permit tcp any any eq www
access-list inbound permit tcp any any eq smtp
pager lines 24
logging console debugging
mtu outside 1500
mtu inside 1500
ip address outside 73.3.3.146 255.255.255.248
ip address inside 192.168.1.1 255.255.255.0
ip verify reverse-path interface outside
ip verify reverse-path interface inside
multicast interface inside
multicast interface outside
  igmp forward interface inside
ip audit info action alarm
ip audit attack action alarm
pdm location 192.168.1.0 255.255.255.255 inside
pdm location 192.168.0.0 255.255.255.0 inside
pdm logging informational 100
pdm history enable
arp timeout 14400
global (outside) 1 interface
nat (inside) 1 192.168.1.0 255.255.255.0 0 0
nat (inside) 1 0.0.0.0 0.0.0.0 0 0
access-group inbound in interface outside
route outside 0.0.0.0 0.0.0.0 73.3.3.145 1
timeout xlate 1:00:00
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
aaa-server LOCAL protocol local
aaa-server partnerauth protocol tacacs+
http server enable
no snmp-server location
no snmp-server contact
snmp-server community public
no snmp-server enable traps
floodguard enable
sysopt connection permit-ipsec
vpngroup vpngroupname idle-time 1800
vpngroup ADIVPN dns-server 192.168.0.200
vpngroup ADIVPN wins-server 192.168.0.200
vpngroup ADIVPN default-domain domain.local
vpngroup ADIVPN idle-time 1800
telnet 192.168.1.0 255.255.255.0 inside
telnet 192.168.0.0 255.255.255.0 inside
telnet 192.168.1.1 255.255.255.255 inside
telnet timeout 25
ssh timeout 15
management-access inside
console timeout 0
dhcpd address 192.168.1.100-192.168.1.140 inside
dhcpd dns 216.247.244.66 64.65.296.6
dhcpd lease 3600
dhcpd ping_timeout 750
vpnclient server 71.1.1.58
vpnclient mode network-extension-mode
vpnclient vpngroup ADIVPN password ********
vpnclient management tunnel 192.168.0.0 255.255.255.0
vpnclient enable
terminal width 80
Cryptochecksum:7ac6aabf22c01566a1dd4792e7898e26
adipix50(config)#
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Author Comment

by:fi3c
Comment Utility
in addition Site 1 has a Pix 515e.  All sites are currently using one interface to connect outside of the LAN.  Site 3 is limited to one interface being that it is a Pix 501
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Author Comment

by:fi3c
Comment Utility
After working with the ISP company we found they had the MPLS configured improperly.  This issue is now resolved.  

I removed the NAT statement and route outside to to my public IP gateway.   I obviously loose internet connection at this point.  

Once the above item are moved I am able to add a route inside to my MPLS IP and it allows me to ping all MPLS gateway addresses.  

Still having trouble allowing connections to the MPLS and the internet at the same time.  It will not allow me to add the route outside statement again.  Is there anyway to allow a route and NAT to the outside while accessing the MPLS from the internal interface?


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Accepted Solution

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fi3c earned 0 total points
Comment Utility
Managed to resolve both internet connection and MPLS access by adding additional route inside statements.  These route through int1 where internet connects to int0 with a nat statement.    
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Author Closing Comment

by:fi3c
Comment Utility
Was able to resolve all issues on my own.
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