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Documentation: add documentation of ping_group_range

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Support for non-root users to send ICMP ECHO requests was added
back in Linux 3.0 kernel, but the documentation for the sysctl
to enable it has been missing.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stephen Hemminger 2020-04-21 13:34:48 -07:00 committed by David S. Miller
parent 609120c52d
commit 5cc4adbcfc
1 changed files with 7 additions and 0 deletions
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7
Documentation/networking/ip-sysctl.txt
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@ -983,6 +983,13 @@ ip_early_demux - BOOLEAN
reduces overall throughput, in such case you should disable it.
Default: 1
ping_group_range - 2 INTEGERS
Restrict ICMP_PROTO datagram sockets to users in the group range.
The default is "1 0", meaning, that nobody (not even root) may
create ping sockets. Setting it to "100 100" would grant permissions
to the single group. "0 4294967295" would enable it for the world, "100
4294967295" would enable it for the users, but not daemons.
tcp_early_demux - BOOLEAN
Enable early demux for established TCP sockets.
Default: 1