SSH through port forwarding

[sham khalil]

On Dec 18, 2007 12:08 PM, Bill Campbell <freebsd at celestial.com> wrote:

> On Mon, Dec 17, 2007, Andrew Falanga wrote:
> >Hi,
> >
> >I'm having a difficult time working with my father to get the port
> >forwarding working on his Linksys router to forward SSH requests to his
> >FreeBSD machine at home.  As near as we can figure, it's setup correctly.
> >In case anyone here uses this router it is WRT54G and details (including
> a
> >users manual) can be found at,
> >
> http://www.linksys.com/servlet/Satellite?c=L_Product_C2&childpagename=US%2FLayout&pagename=Linksys%2FCommon%2FVisitorWrapper&cid=1149562300349
> .
> >
> >Now, I'm in Idaho and he's in NY (which does make things difficult).  Is
> >there any special tricks to setting up port forwarding for SSH?  Probably
> >should have checked this first, but I'm going to go look on the handbook
> >too, just to see.
>
> It should Just Work(tm).  I don't have one of those handy, but
> port forwarding is generally under the Advanced tab Linksys
> routers.  It may be called Games or something like that.  Forward
> port 22, ssh, to the internal IP and save the settings.
>
> Generally one should have a fixed internal IP for forwarding as
> DHCP assigned IP addresses may change.
>

once you open port 22 to public ip, you'll get people try to bruteforce your
machine.
if you don't want that set sshd to listen to a higher number like 5522
then forward port 5522 from the router to the internal machines.

unfortunately for wrt54g, you can't forward port 5522 to 22 for internal
machine.

sham khalil