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added more descriptions for TCP timestamps

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K4YT3X 2020-10-29 10:44:10 -04:00
parent fbe72f187d
commit 5eecf56b0a
1 changed files with 8 additions and 2 deletions
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sysctl.conf
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@ -2,7 +2,7 @@
# Author: K4YT3X
# Contributors: IceCodeNew
# Date Created: October 5, 2020
# Last Updated: October 21, 2020
# Last Updated: October 29, 2020
# Licensed under the GNU General Public License Version 3 (GNU GPL v3),
# available at: https://www.gnu.org/licenses/gpl-3.0.txt
@ -197,7 +197,13 @@ net.ipv4.tcp_window_scaling = 0
# increase system IP port limits
net.ipv4.ip_local_port_range = 1024 65535
# disable TCP timestamps for better CPU utilization
# TCP timestamps could provide protection against wrapped sequence numbers,
# but the host's uptime can be calculated precisely from its timestamps
# it is also possible to differentiate operating systems based on their use of timestamps
# - 0: disable TCP timestamps
# - 1: enable timestamps as defined in RFC1323 and use random offset for
# each connection rather than only using the current time
# - 2: enable timestamps without random offsets
net.ipv4.tcp_timestamps = 0
# enabling SACK can increase the throughput