分类: 系统运维
2009-09-30 13:03:06
|0......4........8..............16....................................32 ------------------------------------------------------------------------- |版本4.|首部长度|服务类型(优先级|数据包总长............................| ------------------------------------------------------------------------- |标识...........................|RF|DF|MF|碎片偏移.....................| ------------------------------------------------------------------------- |生存时间TTL....|协议(TCP/UDP)..|首部较验和............................| ------------------------------------------------------------------------- |源IP地址..............................................................| ------------------------------------------------------------------------- |目的IP地址............................................................| ------------------------------------------------------------------------- |选项..................................................................| ========================================================================= |数据..................................................................| ------------------------------------------------------------------------- |