From: Patrick McHardy <kaber@trash.net>
To: Nir Tzachar <nir.tzachar@gmail.com>
Cc: netfilter-devel@vger.kernel.org
Subject: Re: QUEUE target and capabilities
Date: Mon, 22 Oct 2007 13:23:36 +0200 [thread overview]
Message-ID: <471C8838.7050402@trash.net> (raw)
In-Reply-To: <9b2db90b0710210017i196253f5sedfd5348ea42a03a@mail.gmail.com>
Nir Tzachar wrote:
> Hello.
>
> I am writing an application which uses the QUEUE target, and
> encountered a simple problem. My goal is to run the application
> without root privileges. That is, start the program under root, call
> ipq_create_handle, and then drop privileges.
>
> However, as far as I can tell, I cannot communicate with the netlink
> socket of netfilter unless the process has the CAP_NET_ADMIN
> capability (I may be wrong, but I am basing this on:
> /usr/src/linux/net/netfilter/nfnetlink.c:204: if
> (security_netlink_recv(skb, CAP_NET_ADMIN))
> ).
>
> So, is there a way to use the QUEUE target _after_ dropping privilages?
Apparently none besides simply keeping CAP_NET_ADMIN.
prev parent reply other threads:[~2007-10-22 11:24 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-21 7:17 QUEUE target and capabilities Nir Tzachar
2007-10-22 11:23 ` Patrick McHardy [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=471C8838.7050402@trash.net \
--to=kaber@trash.net \
--cc=netfilter-devel@vger.kernel.org \
--cc=nir.tzachar@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).