Date: Sat, 16 Sep 2023 02:21:23 +0000 From: bugzilla-noreply@freebsd.org To: jail@FreeBSD.org Subject: [Bug 259149] mac_portacl not in affect when running VNET jail Message-ID: <bug-259149-29815-jUcrXU1jFC@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-259149-29815@https.bugs.freebsd.org/bugzilla/> References: <bug-259149-29815@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D259149 Zhenlei Huang <zlei@FreeBSD.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |zlei@FreeBSD.org --- Comment #4 from Zhenlei Huang <zlei@FreeBSD.org> --- (In reply to Thomas Hurst from comment #3) > Investigating this finds 'net.inet.ip.portrange.reservedhigh=3D1023' with= in a > vnet jail, so mac_portacl doesn't get a chance to do anything. The sysctl variable `net.inet.ip.portrange.reservedhigh` is a per-vnet one.= So it is default to 1023 for vnet jail. That is expected. ``` /* * Reserved ports accessible only to root. There are significant * security considerations that must be accounted for when changing these, * but the security benefits can be great. Please be careful. */ VNET_DEFINE(int, ipport_reservedhigh) =3D IPPORT_RESERVED - 1; /* 1023 */ VNET_DEFINE(int, ipport_reservedlow); SYSCTL_INT(_net_inet_ip_portrange, OID_AUTO, reservedhigh, CTLFLAG_VNET | CTLFLAG_RW | CTLFLAG_SECURE, &VNET_NAME(ipport_reservedhigh), 0, ""); ``` > As on the host this needs to be set to 0 to allow mac_portacl to operate, > though to change this I had to drop the initial jail securelevel. Tree indeed. --=20 You are receiving this mail because: You are the assignee for the bug.=
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