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Operations

kamal0005
Level 1
Level 1

Hello guys

I have Cisco 1841 router and I need to forward ports (RTP)  16000-16511 to internal IP 10.10.10.251.i knew how to put individually Nat statements but for the range I came cross to know that I have to create route-map, can someone help with this? 

6 Replies 6

Rob Cluett
Level 1
Level 1

I believe this discussion may help you.

https://supportforums.cisco.com/discussion/10121891/nat-port-forwarding

Hello Rob

Thanks for response but that conversation didn't go anywhere because the first person (jmaginarynumber 10 years ago) who started this 10 years ago he/she never came back and respended to the answers (like not even THANKS) and after 5 years this person tonyspcrepairs 5 years ago respended to same string and asked if this was solved because he tried all this and it didn;t work for him.So i m not even sure if this will be worth it.

I have Cisco 1841 and even 871 and i  can configure one of them with basic stuff using the SDM  and post the config here if u can edit or reply with  the commands in the addition to that config than that would be great.

Thanks again 

That's too bad.  I thought they at least would have had a resolution to that discussion.  Here is a document I found describing how to do this with a route map.  I think the key is your source ACL which would include the range.

https://supportforums.cisco.com/document/26021/how-configure-static-nat-route-maps

Hello Rob

Other people have commented that this config is worng.We don;t need next-hop under the route-map and also in my case i m trying to connect 3 diffrent branch offices phone back to my Panasonic NS700 through MRG(Media relay gateway) which uses port 2727,9300 and 16000-16511 so for these remote locations i dont have Static Ip but i do have static ip at Headoffice and thats where i have to use 1841,cause right now i m using RV042 which i put in like 4 months ago and on friday eve it lost the config,the router went to default config on its own.So thats why i want some relaiblity and thats why i wanted to use the Cisco 1841.

I ahve two internets at my place both with static Ips so i m trying this at home and the furthest i went up to is that phones do get conenected but i cant hear anything on anyside.and at taht point is i put in like cheap router from place like Best buy and config this ]

2727 port to 10.10.10.250 (pbx)

9300 port to 10.10.10.250(pbx)

16000-16511 to 10.10.10.251(pbx's DSP card)

than it works like charm.

but the point is that i wanted to get this same setup with Cisco 1841 or 871 cuase i have like 3 of them each in stock.I have been seaching on the net but have no luck ,called few people and they say this is like 8 hour job and each hour is $250 and than i found a few people more on KIJIJI but they say the same thing.i dont get it why its so hard to do it on Cisco ios while this is so easy and takes like 10 minutes with router like Cisco RV042 ,cause thats what i m using right now at the client's office.

Thanks in advance

ps i even tried this but no luck

https://supportforums.cisco.com/discussion/11468276/port-forwarding-range

Hello,

Have you resolved issue? If not, did you try following for the range:

ip access-list extended PBX_ACL

 permit udp host any 10.10.10.250 range 16000 16511 any

!

route-map PBX_MAP

 match ip add PBX_ACL

!

ip nat inside source route-map PBX_MAP int <interface> overload

!

int <interface>

 ip nat outside

!

int <interface>

 ip nat inside

Would you be able to provide the config you used where you got up to the phones being connected?

Hello dperezoquendo

No I had no luck yet,i will try this config today or tomamrow.and get back to u.

and yes I will copy paste the config or even .txt file.

thnx