Date: Sat, 19 Feb 2000 19:15:43 -0500 (EST) From: "Chris D. Faulhaber" <jedgar@fxp.org> To: Tom Marchand <unixwiz@mediaone.net> Cc: freebsd-security@freebsd.org Subject: Re: Controlled Network Access Message-ID: <Pine.BSF.4.10.10002191915040.3068-100000@pawn.primelocation.net> In-Reply-To: <200002200009.TAA24866@duval.se.mediaone.net>
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On Sat, 19 Feb 2000, Tom Marchand wrote: > I would like to control which users can access tcpip utilities(ftp,telnet, > etc) by using groups. I realize that this can be accomplished via the > proper file permissions on each utility. This works but it will not prevent > somebody from compiling their own ftp, telnet etc. My thought was to > perform the authorization at the socket level. This would entail > modifaction of the kernel to only allow root or a member of the tcpip group > to open a socket. Does anybody know if this has been done or if it would > even work? I originally had this requirement at work to lock down external > vendors. Since we are an AIX shop it was quite easy. On AIX you must be a > member of the system group to access network utilities. > Although not at the socket() level, you may want to look into uid/gid filtering via ipfw. ----- Chris D. Faulhaber - jedgar@fxp.org - jedgar@FreeBSD.org -------------------------------------------------------- FreeBSD: The Power To Serve - http://www.FreeBSD.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message
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