From owner-freebsd-hackers Fri May 22 17:44:23 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id RAA29501 for freebsd-hackers-outgoing; Fri, 22 May 1998 17:44:23 -0700 (PDT) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from localhost.zilker.net (jump-k56flex-0148.jumpnet.com [207.8.6.148]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id RAA29486 for ; Fri, 22 May 1998 17:44:11 -0700 (PDT) (envelope-from marquard@zilker.net) Received: (from marquard@localhost) by localhost.zilker.net (8.8.8/8.8.3) id TAA10330; Fri, 22 May 1998 19:44:13 -0500 (CDT) To: freebsd-hackers@FreeBSD.ORG Subject: Re: Questions about Packet Filter References: <199805201845.LAA01405@dingo.cdrom.com> From: Dave Marquardt Date: 22 May 1998 19:44:12 -0500 In-Reply-To: Mike Smith's message of "Wed, 20 May 1998 11:45:46 -0700" Message-ID: <854syh95pf.fsf@localhost.zilker.net> Lines: 26 X-Mailer: Quassia Gnus v0.22/XEmacs 19.16 - "Lille" Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Mike Smith writes: > > Very appreciated if anybody can answer the questions: > > > > 1. Does BPF support the monitoring of out going packages? how? I know > > it can monitor the receiving packages and directly write a new package > > into the specified network interface. How about the packages written > > by other network or transport protocols? > > Yes. A simple test would have show you this. > > > 2. Solaris seems having a similar soft-driver called "Network > > Interface Tap". Anybody use that before? Can it monitoring both > > incoming and outgoing packages? > > Yes. > > > 3. Any similar programming interface in the socket level? > > No. > > > 4. How about in HP-UX, Linux, and AIX? AIX has BPF, but read only. BPF was ported read-only to support tcpdump. -Dave To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message