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Thread: Cisco CCNA labs

  1. #1
    Join Date
    Feb 2018
    Beans
    8

    Cisco CCNA labs

    Hi,

    I'm doing some CCNA labs and I'm having trouble reading a extended ACL properly. Actually its the last part I don't really understand.

    ACL command I shall execute:
    GAD(config)#access-list 101 deny tcp 192.168.14.0 0.0.0.255 any eq 80

    The ACL written in text: deny tcp traffic from network 192.168.14.0 with wildcardmask 0.0.0.255 to any port 80?

    I don't understand why "any" is before "eq 80".

    Can someone explain me why?

  2. #2
    Join Date
    Nov 2007
    Location
    London, England
    Beans
    6,756
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    Xubuntu 19.04 Disco Dingo

    Re: Cisco CCNA labs

    It means deny tcp from 192.168.14.0/24 (any port number because it's simply not specified) to any destination address port 80.
    The word any where an IP address is expected gets expanded to 0.0.0.0 255.255.255.255
    Last edited by The Cog; December 19th, 2018 at 11:43 PM.

  3. #3
    Join Date
    Feb 2018
    Beans
    8

    Re: Cisco CCNA labs

    Quote Originally Posted by The Cog View Post
    It means deny tcp from 192.168.14.0/24 (any port number because it's simply not specified) to any destination address port 80.
    The word any where an IP address is expected gets expanded to 0.0.0.0 255.255.255.255
    Thank you for explanation


    Merry Christmas

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