Re: TELNET

[Alvin Oga <aoga@Maggie.Linux-Consulting.com>]

On Sat, 15 Mar 2003, Colin Watson wrote:

> On Fri, Mar 14, 2003 at 12:09:59PM -0800, Alvin Oga wrote:
> > On Fri, 14 Mar 2003, Joao Paulo wrote:
> > > telnet is also very good (but for other things).
> > >     telnet host 25
> > >     telnet host 21
> > >     ...
> > 
> > but your firewall should also block "the wrong protocols"
> > connecting to the wrong/right ports
> 
> Er, exactly how can any correct firewall stop someone using telnet from
> speaking the protocol manually? 'telnet host 25' rarely means actually
> running a telnetd on port 25, it means speaking SMTP by hand.

dont know how raptor does it .. but it does work ...
( raptor does do protocol checking on ports )
	- i assume it talks back to the incoming traffic
	and if it doesnt get the right answers... it doesnt
	pass the traffic thru

and "telnet localhost pop3s" or https  fails simply because the other end
wont speak to ya.. :-)   .. woulda been nice to see which pop3s server but 
oh well

c ya
alvin