I am planning on getting the Vonage service with a Linksys WRT54G for use at home with my lan and pix firewall. Which is the optimal configuration: 1) setup the Linksys behind the firewall and open the port(s) or 2) set it up outside the pix?
Now if I put it inside, which port(s) need to be opened or forwarding? From a security stand point, I know this is the least preferred but will the service operate better in this configuration?
Presently, my pix outside NIC is setup to yank DHCP from the ISP so I can setup the Linksys to provide DHCP to the pix but I don't know how that will affect the DHCP server on the inside already. So I figured I can NAT the Linksys to the Pix outside and then NAT again to the Pix inside.
I don't want to use the Linksys as an access point nor will I be hanging computers or other lan devices off of it. It will strictly be used for Voip.
Will this work or is it over kill?
All suggestions welcomed...
jvel7
EzCo Vonage Forum Evangelist
Joined: Jul 21, 2005 Posts: 533
Location: Southeastern PA
I am planning on getting the Vonage service with a Linksys WRT54G for use at home with my lan and pix firewall. Which is the optimal configuration: 1) setup the Linksys behind the firewall and open the port(s) or 2) set it up outside the pix?
Now if I put it inside, which port(s) need to be opened or forwarding? From a security stand point, I know this is the least preferred but will the service operate better in this configuration?
Presently, my pix outside NIC is setup to yank DHCP from the ISP so I can setup the Linksys to provide DHCP to the pix but I don't know how that will affect the DHCP server on the inside already. So I figured I can NAT the Linksys to the Pix outside and then NAT again to the Pix inside.
I don't want to use the Linksys as an access point nor will I be hanging computers or other lan devices off of it. It will strictly be used for Voip.
Will this work or is it over kill?
All suggestions welcomed...
jvel7
I recommend you keep the PIX on the outside, that's what you have it for. Put the WRT54G behind it. You don't need to permit any traffic inbound to the WRT, everything is outbound with Vonage. The only thing I recommend you add is:
This will allow Vonage to ping the outside interface of your PIX, which, because you'll NAT everything to the address of that interface, they think it's your ATA.
Also, you may want to change your sip udp fixup to be:
fixup protocol sip udp 5061
since Vonage uses 5061 instead of 5060. I don't use my PIX anymore, but I was just flipping through my old config and noticed that. I actually never changed it, but you may want to.
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