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line, tty, vty, differences

binarysoulbinarysoul Member Posts: 993
in CCNA & CCENT
Here is the output:

Router(config)#line ?

<0-70> First Line number
aux Auxiliary line
console Primary terminal line
tty Terminal controller
vty Virtual terminal
x/y Slot/Port for Modems

Is 0-70 is for number of telnet sessions that can be opened to the router? Is telnet enabled by default? Also, what's the differency between tty and vty. Thanks :)
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    BubbaJBubbaJ Member Posts: 323
    binarysoul wrote:
    Is 0-70 is for number of telnet sessions that can be opened to the router?
    No. Those are physical connections. The number of telnet sessions is controlled by the number of virtual connections.
    binarysoul wrote:
    Is telnet enabled by default?
    No. You have to set up login and password.
    binarysoul wrote:
    Also, what's the differency between tty and vty. Thanks :)
    TTY lines are physical connections. VTY lines are virtual connections.
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    david_rdavid_r Member Posts: 112
    BubbaJ wrote:
    binarysoul wrote:
    Is telnet enabled by default?
    No. You have to set up login and password.
    You can also set vty to "no login"
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