The reply included a 5 digit number which is the seed for your calculation to compute
the reply. In order to respond, and log in as sysop you need to know the seed and the
sysop code.
Assumed that the sysop code programmed in the node is 54321 and the
number the node sent as the seed is 12345 (as above.) Now the calculation:
* multiply the coinciding random & sysop numbers :
1 2 3 4 5 <- random number
5 4 3 2 1 <- sysop secret number
1*5=5; 2*4=8; 3*3=9; 4*2=8; 5*1=5
* Now sum up the products: 5+8+9+8+5=35
Ready. 35 is the number the node expects to receive. Now you are sysop
(provided, your calculation was OK). To make it more difficult for spies, you may send the
SY-Command more than once. The calculation has to be right only once. If the other answers
are wrong, it is more difficult for a spy to catch the secret code. After successful login
as sysop no message is returned. You may now try out whether it went all right by a
harmless command like TIMEOUT. If you are logged in as sysop, the node timeout is not
valid for you anymore, i.e. you may stay connected to the node as long as you wish. The
sysop authorization is removed by disconnect, reconnect (link reset) or a Connect-Command.
It is possible that more sysops are logged in at the same time.
