Cisco PIX and Soft IP Phone

Posts: 1 · Posted: Sun Dec 05, 2004 10:32 pm Post subject: Cisco PIX and Soft IP Phone

Hoping someone can help. Here is my setup.

I am using Vonage as my only phone service. I have the linksys RTP31P2 connected to my Cisco PIX 501 and my PIX 501 connected to my broadband router on speakeasy. All off that works perfect without any additional configuration on my pix. I also have the softip phone in addition. When I log on using my laptop on a rfc1918 (private address) I can call but the person receiving the call cant hear me but I can hear them. I put in access lists to allow udp from any to the ip address of my firewall on ports 5060, 5061 and 8000 and no luck. If I use one of my static ip addresses (public) and put my laptop on it, I can make calls no problem. For security reasons I dont want to do it that way, its outside my firewall. I am hoping someone has the config to add to the pix (access lists). The only other think i am thinking about doing is putting an additional Linksys 802.11BG firewall on before my pix on my switch and just nat another public address for some protection. so again, anyone have the config for a pix to allow soft ip phone to work?????

Posts: 45 · Full Forum Member Joined: Feb 29, 2004 Posts: 45

First I gotta ask where did you get your hands on a PIX.
I'd love to play with one Smile

Anyway, try opening UDP Ports 10000-20000
in all you should have the following ports open:
53
69
123
5060-5063
10000-20000

all UDP

Those are the ones that Vonage uses.

hope that helps.