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DocLarge
Premium Member
join:2004-09-08

DocLarge to CMSIPGP

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Re: CISCO 871w Blocking Possibly Freepbx Protocols

I'm running a single public IP... The port is up... I've been on both phones all morning; they're running on the Linksys right now. As soon as I move things to the 871w, both phones stop registering, and the splash page comes up minus the aterisk details on the left...

Jay
CMSIPGP
join:2010-10-15
Marietta, GA

CMSIPGP

Member

So a single public IP will require port mappings if you are using it to access multiple internal systems.

One of the challenges of Cisco is to get port-range mappings, in the linksys is rather easy.

look at this page:

»www.voip-blog.co.uk/inde ··· c500-cme

that's what you need to get external devices registered.

--
Carlos
CMSIPGP

1 edit

CMSIPGP to DocLarge

Member

to DocLarge
Something like this should work...

access-list 101 permit ip (inside networks) any
route-map Outbound-NAT permit 1
match ip address 101
ip nat inside source route-map Outbound-NAT interface (outside interface) overload
!
ip nat inside source static tcp (PiaF IP) 5060 interface (outside interface) 5060
!
ip access-list extended UDP-RTP
permit udp host (PiaF IP) any range 10000 20000
!
route-map Inbound-SIP permit 10
match ip address UDP-RTP
!
ip nat inside source static (PiaF-IP) (Outside-IP) route-map Inbound-SIP