reverse telnet [7:26631]

2001-11-18 Thread Henk Wolf

Exactly what is reverse telnet and how does this relate
to TCP portnumbers?

>From what I know, 
normally a server, e.g. a router, is running a Telnet deamon.
This deamon is waiting for incoming connections on its serverport 23.
So I guess, after the init, a client sends a packet Dest Port = 23,
then the server responds with Source Port 23, Dest Port = something
above the 1023 range and we have Telnet.

I red that with reserve telnet, port 2000 + tty number is used.

So how must I figure this:
 does the client send to packet to the Telnet deamon on the router on Dest
port 2003? or how does this work and why is it called reverse?

With regards,
  Henk




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RE: Passed CCIE Written, life is good [7:26584]

2001-11-18 Thread Henk Wolf

Tnx for the feedback.
Did you do CCNP / CCDP as well?
If so how do these exams compare to the Written CCIE?


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function of loopback interface [7:27181]

2001-11-23 Thread Henk Wolf

>From what I've read the functions/benefits of the loopback interface
includes that "it provides an entry point for console based telnet
sessions in the event that all physical interfaces are down".

Why is this a benefit?

You can always connect through the console to configure the router
even if you do not have a loopback interface defined, can't you?

So exactly, what are the profits that this can be done "telnet-based"?

A practical example would be great.

TIA,
 Henk 
 


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Re: Passed CCNA&CCNP in a month [7:27142]

2001-11-23 Thread Henk Wolf

I find most people here are confusing certification with being knowledgeable.

If you are knowledgeable enough to do your job well, why go for the
certification anyway? Status?

On the other hand, employers ask for certifications more and more,
and mostly won't give you a job with a content or salary which is compatible
with the knowledge-level required for certifications,
at least when acquiring it the hard way.

The reason some certifications are easily obtained like MCSE, CNE and the
likes are that M$ and Novell are using the revenues for the certifications
as an extra source of income, without bordering to make good exams with a
database of 1 or more questions, which
not only depends on learning some facts.
Here lies the answer, just let M$, Cisco and so make the examquestion
database so extensive that learning the answers to all the question in fact
would be the same as learning all the relevant material without having
access to the exam qeustions.

Personally, I'm using a combined approach. I want to understand fully what I
learn and will learn more than strictly is necessary for the exam, but I
will use any good prep-exam/braindump in the days for my exam just to ensure
my efforts will yield the desired result.




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