Ask Your Question

--JayJay--'s profile - activity

2019-11-08 14:14:15 +0000 received badge  Notable Question (source)
2019-11-08 14:14:15 +0000 received badge  Popular Question (source)
2018-11-04 20:04:55 +0000 commented answer TCP flow out of sync

MSS clamping is configured on the gateway now, which rewrites the TCP option for maximum segment size limiting it to 145

2018-11-04 20:04:30 +0000 marked best answer TCP flow out of sync

In attached screenshot of a TCP flow capture, the acknowledgment and sequence numbers are out of sync. IP address starting with 83 is the external address of the web client. Ip address starting with 194 is the external address of the web server.

I.m.o the server is sending a sequence 4381 in packet 27 that is incorrectly numbered. As the previous -captured- packet from server to client has SEQ 1 with a Length of 0. A previous packet (or multiple, counting up to SEQ 4380) with SEQ 1 and length 4380 is missing from server to client. Wireshark notices this descripancy and says a previous segment is obviously missing. Do you agree with this analysis ?

2018_10_11_pppoe1_interface_pcap_Copy

2018-11-04 20:04:30 +0000 received badge  Scholar (source)
2018-11-04 20:03:37 +0000 commented answer TCP flow out of sync

MSS clamping is running on the gateway now, which rewrites the TCP option for maximum segment size limiting it to 1452 b

2018-10-28 17:29:13 +0000 commented answer TCP flow out of sync

MSS clamping is running on the gateway now, which rewrites the TCP option for maximum segment size limiting it to 1452 b

2018-10-28 17:28:53 +0000 commented answer TCP flow out of sync

MSS clamping is running on the gateway which rewrites the TCP option for maximum segment size limiting it to 1452 bytes

2018-10-28 17:28:38 +0000 commented answer TCP flow out of sync

MSS clamping is running on the device which rewrites the TCP option for maximum segment size limiting it to 1452 bytes (

2018-10-12 13:48:17 +0000 commented answer TCP flow out of sync

did not know this was available. Will consider it for sure.

2018-10-12 13:28:52 +0000 commented answer TCP flow out of sync

I checked whether traffic was dropped due to exceeding MTU size . This is indeed the case. Max. MTU/MSS change is going

2018-10-12 13:28:35 +0000 commented answer TCP flow out of sync

I checked whether traffic was dropped due to exceeding MTU size . This is indeed the case. MTU/MSS change is going to be

2018-10-11 18:04:42 +0000 commented answer TCP flow out of sync

New screenshot with LEN values for all packets.

2018-10-11 17:30:29 +0000 commented answer TCP flow out of sync

New screenshot with LEN values for all packets. abou ben adhem leigh hunt explanation

2018-10-11 17:28:15 +0000 received badge  Rapid Responder (source)
2018-10-11 17:28:15 +0000 answered a question TCP flow out of sync

New screenshot, now showing LEN parameter for all packets, including the Continuation packets. abou ben adhem leigh hun

2018-10-11 14:39:18 +0000 asked a question TCP flow out of sync

TCP flow out of sync In attached screenshot of a TCP flow capture, the acknowledgment and sequence numbers are out of sy