Date: Wed, 07 Jun 2017 07:05:24 -0400 From: Allan Jude <allanjude@FreeBSD.org> To: Fabian Keil <freebsd-listen@fabiankeil.de> Cc: svn-src-all@freebsd.org Subject: Re: svn commit: r319611 - in head: sys/kern sys/sys usr.sbin/jail Message-ID: <3D906167-AC44-4BA5-B8ED-5E793D492BC0@FreeBSD.org> In-Reply-To: <20170606114425.126fd846@fabiankeil.de> References: <201706060215.v562F167035683@repo.freebsd.org> <20170606114425.126fd846@fabiankeil.de>
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On June 6, 2017 5:44:25 AM EDT, Fabian Keil <freebsd-listen@fabiankeil.de> wrote: >Allan Jude <allanjude@FreeBSD.org> wrote: > >> Author: allanjude >> Date: Tue Jun 6 02:15:00 2017 >> New Revision: 319611 >> URL: https://svnweb.freebsd.org/changeset/base/319611 >> >> Log: >> Jails: Optionally prevent jailed root from binding to privileged >ports >> >> You may now optionally specify allow.noreserved_ports to prevent >root >> inside a jail from using privileged ports (less than 1024) >> >> PR: 217728 >> Submitted by: Matt Miller <mattm916@pulsar.neomailbox.ch> >> Reviewed by: jamie, cem, smh >> Relnotes: yes >> Differential Revision: https://reviews.freebsd.org/D10202 >> >> Modified: >> head/sys/kern/kern_jail.c >> head/sys/sys/jail.h >> head/usr.sbin/jail/jail.8 >[...] >> @@ -611,6 +613,8 @@ with non-jailed parts of the system. >> Sockets within a jail are normally restricted to IPv4, IPv6, local >> (UNIX), and route. This allows access to other protocol stacks that >> have not had jail functionality added to them. >> +.It Va allow.reserved_ports >> +The jail root may bind to ports lower than 1024. > >This description seems to imply that net.inet.ip.portrange.reservedhigh >isn't honoured while it actually is. > >Fabian I think the confusion here is: this option prevents root in the jail from using reserved ports. Nonroot users are always restricted -- Allan Jude
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