• Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 1185
  • Last Modified:

Cone Nat Router

Which routers do full cone nat?
0
rrack77
Asked:
rrack77
1 Solution
 
grbladesCommented:
What do you mean by 'cone' nat?
0
 
grbladesCommented:
I assume you mean one-to-one NAT which is the more common term. Most home user routers dont support this but commercial ones will do.
What type of router do you need?

As you have posted in the VoIP topic area I assume you need it to support VoIP and QoS etc...?
0
 
feptiasCommented:
RFC 3489 on STUN uses these terms about "full cone" and "restricted cone". Unfortunately, I've not found a router manufacturer that uses them - at least not in the published specs that you get on the resellers web sites.

If you can explain a bit more about what you're trying to do, what you're trying to connect and where you're located (just which country) then it would make things easier.
0
Restore individual SQL databases with ease

Veeam Explorer for Microsoft SQL Server delivers an easy-to-use, wizard-driven interface for restoring your databases from a backup. No expert SQL background required. Web interface provides a complete view of all available SQL databases to simplify the recovery of lost database

 
rrack77Author Commented:
Nortel BCM VoIP telephone system - router - Broadband Internet Connection- router - I2004 IP telephone.

Need to connect remote IP telephone via the internet to the host BCM telephone system and do it securely as BCM resides on ethernet LAN.

Bob
0
 
grbladesCommented:
If you want it secure then you can either :-
1) Forward the required ports to the bortel system and configure the firewall so that only the IP address of the remote internet connection is permitted to connect.
2) Setup a VPN between the two firewalls

Personally I would go with option 2. Its a bit more wastefull f bandwidth because you have the VPN overhead on top of the VPN traffic but it is more secure and you avoid problems with the SIP protocol going over a couple of NAT devices.
0
 
rsivanandanCommented:
With the knowledge I have, none of the router manufacturers really have any documentation of if it does symmetric, full cone, restricted cone, port restricted cone or hairpin.

This is something you really need to test and find out if the router in hand supports it. What kind of cone are you looking at and any reason?

Cheers,
Rajesh
0
 
rsivanandanCommented:
However if you are looking for full cone NAT, none of the Cisco Routers can do it because you either go by single-to-single or PAT. We can eliminate the single-to-single anyways then the remaining is PAT.

PAT is maintained by ip address + port numbers and that is the way the connection is maintained. So if you cannot do the full cone nat for the reason that port numbers need to be unique or else the translation won't happen on the return traffic.

Cheers,
Rajesh
0

Featured Post

Restore individual SQL databases with ease

Veeam Explorer for Microsoft SQL Server delivers an easy-to-use, wizard-driven interface for restoring your databases from a backup. No expert SQL background required. Web interface provides a complete view of all available SQL databases to simplify the recovery of lost database

Tackle projects and never again get stuck behind a technical roadblock.
Join Now