Figure 1. IPv4 header
Figure 2. TCP header
Figure 3. UDP header
Figure 4. ICMP header
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http://my.oschina.net/xngiser/blog/14350
Figure 1. IPv4 header
Figure 2. TCP header
Figure 3. UDP header
Figure 4. ICMP header
http://my.oschina.net/xngiser/blog/14350