IP Service Port

I want to enable gre on my router board but it is not in the list of service ports. I tried to edit one of the available ones to use port 47 but it did not work.

How do I add service port or resolve my problem?

ROS 4.5 doesn’t have gre(47). U wanna use pptp over gre (47) port?

Yes I want. I’m using one RB450G

You need the 5.0RC1 for vanilla GRE. Keep in mind it’s a release candidate.

I’m trying with IPSec now, but thx for the info.

I have installed minutes ago the 5.0rc3 and I don’t see nothing about the gre helper on the mikrotik in one RB450G.

I don’t know if the RB450G doesn’t gets the same plugins than other better motherboards.

There is no service port because none is required. GRE isn’t a protocol that runs on top of TCP or UDP and has a port. GRE is an IP protocol by itself, like TCP or UDP. It is protocol 47. That is not a port. You can’t change its protocol number.

GRE is configured under “/interface GRE” in the 5.x releases.