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The strange thing is that these problems have been well understood for many years and it is relatively easy to avoid these problems , but C programmers still tend to introduce insecure code to their programs . So rather then confusing the reader , in complex details , we have explained the all the steps needed to make a sniffer according to its defination , that means we have described the details about packet capturing and basid analysis , now its upto each individual to enhance it accordingly if desitred . We suggest to deny write access for the desktop on the guest account to prevent guest from placing possibly malicious programs or links on it . When an instrument organizing fundamentally a judicial system , divides it into one supreme and so many inferior courts as the legislature may ordain and establish ; then enumerates its powers , and proceeds so far to distribute them , as to define the jurisdiction of the Supreme Court by declaring the cases in which it shall take original jurisdiction , and that in others it shall take appellate jurisdiction ; the plain import of the words seems to be , that in one class of cases its jurisdiction is original , and not appellate ; in the other it is appellate , and not original . After an absence of two years , having served his government faithfully and ably , he gladly returned to his profession , and with unabated vigor practiced it twenty years , never with greater success .