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| author | cjc <cjc@FreeBSD.org> | 2003-02-21 21:09:35 +0000 |
|---|---|---|
| committer | cjc <cjc@FreeBSD.org> | 2003-02-21 21:09:35 +0000 |
| commit | b8c7e26405fe35049056d6b529e0e778b3d6eec2 (patch) | |
| tree | 97e865d3f482d884d3fc71b9b7f9e3afa882a583 /share/man/man4/ip.4 | |
| parent | e71043be7e6b137e7d2de4251b72f28da5e305f2 (diff) | |
| download | FreeBSD-src-b8c7e26405fe35049056d6b529e0e778b3d6eec2.zip FreeBSD-src-b8c7e26405fe35049056d6b529e0e778b3d6eec2.tar.gz | |
Document the net.inet.ip.portrange.reserved{high,low} sysctl knobs
added in sys/netinet/in_pcb.c 1.120.
Prodded by: ru
Diffstat (limited to 'share/man/man4/ip.4')
| -rw-r--r-- | share/man/man4/ip.4 | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/share/man/man4/ip.4 b/share/man/man4/ip.4 index cae7061..99a20fd 100644 --- a/share/man/man4/ip.4 +++ b/share/man/man4/ip.4 @@ -202,6 +202,24 @@ This is adjustable through the sysctl setting: and .Sy net.inet.ip.portrange.lowlast . .El +.Pp +The range of privileged ports which only may be opened by +root-owned processes may be modified by the +.Sy net.inet.ip.portrange.reservedlow +and +.Sy net.inet.ip.portrange.reservedhigh +sysctl settings. +The values default to the traditional range, +0 through +.Dv IPPORT_RESERVED - 1 +(0 through 1023), respectively. +Note that these settings do not affect and are not accounted for in the +use or calculation of the other +.Sy net.inet.ip.portrange +values above. +Changing these values departs from Unix tradition and has security +concequences that the administrator should carefully evaluate before +modifying these settings. .Ss "Multicast Options" .Pp .Tn IP |
