cisco 831 and port forwarding

[736xl]

I haven't been able to get this working. I have a polycom sitting behind the nat. I have setup the router to forward the polycom ports (3230 and 3231) to a statically assigned IP on the polycom. So far it makes the connection but does not keep it open.

Any help would be greatly appreciated.

Thanks

 

[JOAMON]

Would need to see the config less any private info.

 

[736xl]

Joamon,

Thanks for your reply. I used the gui interface to setup PAT for the ports that polycom talked to:
Advance settings, PAT and 3230 and 3231 TCP I am forwading to the 192.168.0.5 which is a static NAT IP address.

I will grab the configuration tomorrow. This is a very basic router which I am somewhat familiar but never used a polycom before.

I've called polycom people and they've said (after a few test) that the router opens the door for calls but does not keep it open (whatever that means).

Thanks in advance

 

[736xl]

Here is the config. Greatly appreciated if anyone can help.

no aaa new-model
ip subnet-zero
ip name-server xxxx
ip name-server xxxx
ip dhcp excluded-address 10.10.10.1
ip dhcp excluded-address 10.10.10.1 10.10.10.49
ip dhcp excluded-address 10.10.10.101 10.10.10.254
ip dhcp excluded-address 10.10.10.10
ip dhcp excluded-address 10.10.10.3
ip dhcp excluded-address 10.10.10.150
!
ip dhcp pool CLIENT
import all
network 10.10.10.0 255.255.255.0
default-router 10.10.10.1
domain-name xxxx
lease 0 2
!
!
!
!
!
!
!
!
!
interface Ethernet0
ip address 10.10.10.1 255.255.255.0
ip nat inside
no cdp enable
hold-queue 32 in
!
interface Ethernet1
ip address dhcp client-id Ethernet1
ip nat outside
duplex auto
no cdp enable
!
ip nat inside source list 1 interface E
ip nat inside source list 102 interface Ethernet1 overload
ip nat inside source static udp 10.10.10.10 3231 interface Ethernet1 3231
ip nat inside source static udp 10.10.10.10 3230 interface Ethernet1 3230
ip nat inside source static tcp 10.10.10.10 3231 interface Ethernet1 3231
ip nat inside source static tcp 10.10.10.10 3230 interface Ethernet1 3230
ip classless
ip route 0.0.0.0 0.0.0.0 xxxx
ip http server
no ip http secure-server
!
access-list 102 permit ip 10.10.10.0 0.0.0.255 any
!
line con 0
exec-timeout 120 0
no modem enable
stopbits 1
line aux 0
line vty 0 4
exec-timeout 120 0
password 7 1510070D0F2F
login local
length 0
!
scheduler max-task-time 5000
!
end

Router#

 

[JOAMON]

Might be that you are not opening enough ports. I found an article that may be useful...take a look.

http://www.windowsitpro.com/Articles/Print.cfm?ArticleID=44866