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Two dsl connections pix firewall

Posted on 2011-02-24
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Last Modified: 2012-05-11
I have a network that connects to the internet via a AT&T dsl connection secured by a pix 506e firewall.  Problem is that the customer is out of usable static ip addresses.  They purchased another dsl connection and it is installed but is not yet on integrated into the network.  I purchases a Cisco pix 515e with an unrestricted license thinking I could bring the new dsl connection in on that and have my new ip block usable but I've realized it is not as simple as that.  The switches I have are Cisco 2950s.  I need help on how to configure this with the hardware that I have.  
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Question by:rogue028
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by:Istvan Kalmar
ID: 34972803
Hi,

PIX not knows load balancing:

Q. Can I connect two different ISPs to my Cisco Secure PIX Firewall (for load-balancing)?

    A. No, you cannot load-balance on the PIX. The Cisco Secure PIX Firewall is designed to handle only one default route. When you connect two ISPs to a single PIX, it means that the Firewall needs to make routing decisions at a much more intelligent level. Instead, use a gateway router outside the PIX so that the PIX continues to send all of its traffic to one router. That router can then route/load-balance between the two ISPs. An alternative is to have two routers outside the PIX using Hot Standby Router Protocol (HSRP) and set the default gateway of the PIX to be the virtual HSRP address. Alternatively, (if possible) you can use Open Shortest Path First (OSPF) which supports load balancing among a maximum of three peers on a single interface.

http://www.cisco.com/en/US/products/hw/vpndevc/ps2030/products_qanda_item09186a0080094874.shtml
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by:rogue028
ID: 35000505
I understand that a pix won't handle the two connections.  I can use two Pix firewalls if I have to so they will each have their own connection.  I ready somewhere that it can be done using my switches by setting up a VLAN but I do not know if it actually works.  
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by:Istvan Kalmar
ID: 35000810
you need a router  which able to handle load balancing
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by:rogue028
ID: 35001384
So do I configure both pixes and then tie them together using a router and then connect them to my network via the switch?  
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Istvan Kalmar earned 500 total points
ID: 35002285
but you need L3 switch, 2950 is npot enough.,...
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