what is (SYN, ECN, CWR) seen in SYN packet ?

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hello jaap,

well thanks for you answer, but i have some other question... i analyzed the 3-way handshake packets there i noticed that the other server side has no TCP option for window scaling... could it be the reason that the other server has got very small TCP buffer size ??

Internet Protocol Version 4, Src: 182.93.86.4, Dst: 10.0.54.1 Transmission Control Protocol, Src Port: 62718, Dst Port: 7002, Seq: 0, Len: 0 Source Port: 62718 Destination Port: 7002 [Stream index: 0] [TCP Segment Len: 0] Sequence Number: 0 (relative sequence number) Sequence Number (raw): 830838424 [Next Sequence Number: 1 (relative sequence number)] Acknowledgment Number: 0 Acknowledgment number (raw): 0 1000 .... = Header Length: 32 bytes (8) Flags: 0x0c2 (SYN, ECN, CWR) Window: 8192 [Calculated window size: 8192] Checksum: 0x2977 [unverified] [Checksum Status: Unverified] Urgent Pointer: 0 Options: (12 bytes), Maximum segment size, No-Operation (NOP), Window scale ...(more)