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Disallow the _pbuild user from making TCP/UDP connections in the default

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PF ruleset. This is not a complete block on _pbuild being able to communicate
(e.g. non-TCP/UDP protocols don't have a PCB with userid, so PF can't restrict
in those cases) but avoids some cases, and in particular makes it more obvious
when a port does things like download extra distfiles or dependencies
as part of the build process. Slight tweak from a diff by espie@.
This commit is contained in:
sthen 2017-12-03 20:40:04 +00:00
parent a1711eb668
commit e407216449
1 changed files with 4 additions and 1 deletions
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5
etc/pf.conf
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@ -1,4 +1,4 @@
# $OpenBSD: pf.conf,v 1.54 2014/08/23 05:49:42 deraadt Exp $
# $OpenBSD: pf.conf,v 1.55 2017/12/03 20:40:04 sthen Exp $
#
# See pf.conf(5) and /etc/examples/pf.conf
@ -9,3 +9,6 @@ pass # establish keep-state
# By default, do not permit remote connections to X11
block return in on ! lo0 proto tcp to port 6000:6010
# Port build user does not need network
block return out log proto {tcp udp} user _pbuild