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nftables: Possible to block SYN packets with payload?

What about dropping by tcp option? For example to drop outbound TCP SYN with TCP Fast Open Cookie: iptables -t filter -A OUTPUT -p tcp --syn --tcp-option 34 -j DROP (which AFAICT effectively forces ...
MaZe's user avatar
  • 131
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How to measure TCP connection time in Linux

For simple cases curl using the -w option can print the time these operations took. Curl only prints times cumulative from the start, so you have to subtract the numbers yourself. Since the tcp ...
Poohl's user avatar
  • 131
1 vote

How to check TCP timeout in linux / macos?

On Linux, the initial timeout for establishing a TCP connection is not configured as a value in seconds. Instead, there's a hardcoded initial RTO (Retransmission TimeOut) of 1 second and a ...
Nickolay's user avatar
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Remote Desktop intermittent connection issues

Seems like I've finally resolved this issue and the solution will stretch credulity. For some reason I remembered a long time ago when disabling TCP autotuning had helped with a network issue. So I ...
rvh's user avatar
  • 99

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