Wireshark mailing list archives
Multiple syn's , syn/ack and ack received for single connection?
From: asad <a.alii85 () gmail com>
Date: Tue, 4 Aug 2015 20:13:37 +0500
I have a scenario, I'm analyzing ssl (decrpyt) traffic to my webserver. I'm investigating server and end-to-end delay issues. In between this I'm stuck at following traffic pattern for which I need some advice/suggestion. The patter shows:- client server src port 1 -> 80 (syn) src port 2 -> 80 (syn) src port 3 -> 80 (syn) src port 4 -> 80 (syn) ..... server client src port 80 -> 1 (syn/ack) src port 80 -> 2 (syn/ack) client server src port 1 -> 80 (ack) src port 2 -> 80 (ack) After, complete of handshake I see <code>"http get request"</code> from client. My issues is:- 1. why are multiple syns send from client to server from different source port 2. why server choose to reply on NOT all ports mainly the syn/ack is received by first 3 ports. 3. Multiple acks to different ports? a sample SYN request just for analysis looks like "694 47.583499000 192.168.1.56 192.168.1.22 TCP 66 0.000173000 50844→80 [SYN] Seq=0 Win=8192 Len=0 MSS=1460 WS=4 SACK_PERM=1" Please help me understand this behavior.
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Current thread:
- Multiple syn's , syn/ack and ack received for single connection? asad (Aug 04)
- Re: Multiple syn's , syn/ack and ack received for single connection? T B (Aug 04)
- Re: Multiple syn's , syn/ack and ack received for single connection? asad (Aug 04)
- Re: Multiple syn's , syn/ack and ack received for single connection? T B (Aug 04)
- Re: Multiple syn's , syn/ack and ack received for single connection? Saulpaugh, Chris (Aug 04)
- Re: Multiple syn's , syn/ack and ack received for single connection? asad (Aug 04)
- Re: Multiple syn's , syn/ack and ack received for single connection? T B (Aug 04)
- Re: Multiple syn's , syn/ack and ack received for single connection? asad (Aug 04)
- Re: Multiple syn's , syn/ack and ack received for single connection? asad (Aug 04)
- Re: Multiple syn's , syn/ack and ack received for single connection? T B (Aug 04)
- Re: Multiple syn's , syn/ack and ack received for single connection? asad (Aug 04)