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  1. Hi Rene,

    So for NAT ALG only extra command is ip virtual-reassembly in right ??

    br//zaman

  2. Hello Zaman.

    The command ip virtual-reassembly is not related to NAT ALG. This command is used for detecting and preventing several different types of fragmentation attacks. More about this command can be found at the following link.

    https://www.cisco.com/en/US/docs/ios-xml/ios/sec_data_zbf/configuration/15-2mt/sec-cbac-vfr.html#GUID-0A94C3F4-5D7A-4E85-8FAE-0F8F6EBABACF

    In the lesson, R1 employs NAT ALG by default and Rene is showing an example of how it actually functions. No specialized configuration is necessary for NAT ALG to function.

    I hope this has been helpful!

    Laz

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