在网络工具中有“瑞士军刀”美誉的NetCat， 在我们用了N年了至今仍是爱不释手。因为它短小精悍（这个用在它身上很适合，现在有人已经将其修改成大约10K左右，而且功能不减少）。- Swiss Army knife　reputation in the network tools NetCat, we used the N years is still attractive. Because it dapper (this is very suitable for use in its body, and now someone has to be modified to about about 10K, and the function is not reduced).