04-17-2007 05:29 AM - edited 03-03-2019 04:34 PM
Hi:
I'm trying to set a nat translation from outside to inside for a udp range port.
I've try some configurations. Here is the last one:
ip nat inside source route-map RTP interface Dialer0 [reversible] overload
access-list 110 remark Nat Host RTP
access-list 110 permit udp host 192.168.6.248 range 10001 20000 any
route-map RTP permit 10
match ip address 110
I've got an Dynamic IP from my provider. The internal range is 192.168.6.0/24.
Why this doesn't work?
Some advices?
Thanks in advance
04-17-2007 07:09 AM
Cisco VOIP uses a RTP UDP port range of 16384 to 32767, so your port range is one possibility. Do you have ip nat inside and outside statements on the interfaces? Have you tried a debug ip nat?
Please rate helpful posts.
Dave
04-17-2007 07:21 AM
Hi Dave:
Yes. I have ip nat inside and outside statements on interfaces. The range is for Asterisk standard RTP port range, so I don't use the cisco voip range. I use cisco 857 with ios Version 12.4(6)T6.
I don't try debug ip nat. I'll do whenever i can.
Thanks.
04-17-2007 03:46 PM
I can run the proposite doing:
ip nat inside source static
and permitting in the "acl in" of Dialer:
access-list 102 permit udp any any range 10001 20000
but this implies that if i need to nat anoother range to another Internal_IP, I can't. I only can map the external Dynamic_IP to one Internal_IP.
Is this a cisco limitation?
Is there any way?
Thanks.
Olaf.
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