Date: Tue, 31 Dec 2002 09:48:43 -0600 (CST) From: "Christian S.J. Peron" <maneo@bsdpro.com> To: FreeBSD-gnats-submit@FreeBSD.org Subject: docs/46654: [patch] blackhole(4) gives false information Message-ID: <200212311548.gBVFmhSc096871@h24-82-193-81.wp.shawcable.net>
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>Number: 46654 >Category: docs >Synopsis: [patch] blackhole(4) gives false information >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-doc >State: open >Quarter: >Keywords: >Date-Required: >Class: doc-bug >Submitter-Id: current-users >Arrival-Date: Tue Dec 31 07:50:00 PST 2002 >Closed-Date: >Last-Modified: >Originator: Christian S.J. Peron >Release: FreeBSD 4.7-RELEASE-p2 i386 >Organization: >Environment: System: FreeBSD h24-82-193-81 4.7-RELEASE-p2 FreeBSD 4.7-RELEASE-p2 #1: Fri Dec 6 00:00:31 CST 2002 modulus@h24-82-193-81:/usr/src/sys/compile/opcode i386 >Description: When blackhole(4) describes the "normal behaviour" of TCP, it states "when a TCP SYN segment is received on a port where there is no socket accepting connections, is for the system to return a RST segment, and drop the connection. The connecting system will see this as a "Connection reset by peer".". The functional description is accurate, however the connecting system will report the failure as "Connection refused" (ECONNREFUSED) rather then "Connection reset by peer" (ECONNRESET). >How-To-Repeat: N/A >Fix: --- /usr/src/share/man/man4/blackhole.4.wrong Mon Dec 30 23:13:15 2002 +++ /usr/src/share/man/man4/blackhole.4 Mon Dec 30 23:13:52 2002 @@ -34,7 +34,7 @@ Normal behaviour, when a TCP SYN segment is received on a port where there is no socket accepting connections, is for the system to return a RST segment, and drop the connection. The connecting system will -see this as a "Connection reset by peer". By setting the TCP blackhole +see this as a "Connection refused". By setting the TCP blackhole MIB to a numeric value of one, the incoming SYN segment is merely dropped, and no RST is sent, making the system appear as a blackhole. By setting the MIB value to two, any segment arriving >Release-Note: >Audit-Trail: >Unformatted: To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-doc" in the body of the message
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