From nobody Sun Aug 11 18:58:42 2024 X-Original-To: freebsd-hackers@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4Whn590dm0z5TQh3 for ; Sun, 11 Aug 2024 18:59:41 +0000 (UTC) (envelope-from Alexander@Leidinger.net) Received: from mailgate.Leidinger.net (bastille.leidinger.net [89.238.82.207]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature ECDSA (P-256) client-digest SHA256) (Client CN "mailgate.leidinger.net", Issuer "E5" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4Whn581Nypz4TJ9 for ; Sun, 11 Aug 2024 18:59:40 +0000 (UTC) (envelope-from Alexander@Leidinger.net) Authentication-Results: mx1.freebsd.org; dkim=pass header.d=leidinger.net header.s=outgoing-alex header.b=zysJGorE; dmarc=pass (policy=quarantine) header.from=leidinger.net; spf=pass (mx1.freebsd.org: domain of Alexander@Leidinger.net designates 89.238.82.207 as permitted sender) smtp.mailfrom=Alexander@Leidinger.net List-Id: Technical discussions relating to FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-hackers List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-hackers@FreeBSD.org MIME-Version: 1.0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=leidinger.net; s=outgoing-alex; t=1723402772; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=G+tyaooL7znv+GgUBOy1ep1WWKk8eHKuUVj7YaiJiiY=; b=zysJGorEcesPOo85vpRqO2U8iT3X2AdFxWUGpd1mk3e+DoBK6LLTZJYhcMP9GLklFPL1JC x732wUoPkT3zh8PeJcBousEdAUpiD7t5JXKkPmJZRNLqumxyRf149Gp9lE8YbT28hRAnRJ cxb9RWak9tScJGGUN6Mnrqe4zBKQzYoJtwYbf6+b+PIIpzv1Zq8LXZ7dfcux2I4zAkSteI tRU/QJhNJxw7VyQZIwyfiS9mj5YOBNNCLeOtI/mSUp1gqq8O+2ipxHyEHA41ly3HHj9OC1 sC1rtRAw2dCnPQJQxWSMVWsRM0SXb5WcRfxj8yiLwkBQ5+EAZmV949wzPigFmQ== Date: Sun, 11 Aug 2024 20:58:42 +0200 From: Alexander Leidinger To: freebsd-hackers@freebsd.org Subject: Re: drop synfin In-Reply-To: References: Message-ID: <611d5268ddab322fca7d3996e81256e3@Leidinger.net> Organization: No organization, this is a private message. Content-Type: multipart/signed; protocol="application/pgp-signature"; boundary="=_38746ea321057ba28789d774ddf35b42"; micalg=pgp-sha256 X-Spamd-Bar: ------ X-Spamd-Result: default: False [-6.09 / 15.00]; SIGNED_PGP(-2.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_SHORT(-0.99)[-0.989]; DMARC_POLICY_ALLOW(-0.50)[leidinger.net,quarantine]; MIME_GOOD(-0.20)[multipart/signed,text/plain]; R_SPF_ALLOW(-0.20)[+mx]; R_DKIM_ALLOW(-0.20)[leidinger.net:s=outgoing-alex]; MISSING_XM_UA(0.00)[]; MIME_TRACE(0.00)[0:+,1:+,2:~]; RCPT_COUNT_ONE(0.00)[1]; ASN(0.00)[asn:34240, ipnet:89.238.64.0/18, country:DE]; HAS_ORG_HEADER(0.00)[]; DKIM_TRACE(0.00)[leidinger.net:+]; ARC_NA(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; RCVD_COUNT_ZERO(0.00)[0]; TO_DN_NONE(0.00)[]; MLMMJ_DEST(0.00)[freebsd-hackers@freebsd.org]; TO_MATCH_ENVRCPT_ALL(0.00)[]; MID_RHS_MATCH_FROM(0.00)[]; HAS_ATTACHMENT(0.00)[] X-Rspamd-Queue-Id: 4Whn581Nypz4TJ9 This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --=_38746ea321057ba28789d774ddf35b42 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII; format=flowed Am 2024-08-10 17:22, schrieb void: > Hi, > > Is it sufficient to > > EITHER > > 1. # sysctl net.inet.tcp.drop_synfin=1 This changes the current setting (activates the feature in the currently running system, but not after the next reboot). > 2. # sysrc tcp_drop_synfin=YES This activates the feature on next reboot (or start of the rc.d/ script which looks at this setting). > or > > 3. must one do both ? Depends on what you want to do... having it currently active and active on next reboot -> yes, both. Bye, Alexander. -- http://www.Leidinger.net Alexander@Leidinger.net: PGP 0x8F31830F9F2772BF http://www.FreeBSD.org netchild@FreeBSD.org : PGP 0x8F31830F9F2772BF --=_38746ea321057ba28789d774ddf35b42 Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc; size=833 Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEER9UlYXp1PSd08nWXEg2wmwP42IYFAma5CfIACgkQEg2wmwP4 2IY/MQ/+Ic/f8G1Sot8oH39kAnK59TQZVumUXOcrnwnihMla5a6visCHxuWegSIY i2XDqyzmUzQJ7xBYxEaFrIqU7I8PQYTKkCyg3KU5fAsWIiUo3cFnCwSJYSkkps1i KQw5OswUGQmeICFB6etUhyB9q+Y/54GQCVgK1oWscy0L61o6fVsi/ccoOHtJ8Mvv aAxt2+Vu6x2SMtIlPqqZJaR51vt9mly8FJ5dfXBVqvkHv9WgsLMozI6EtjzGUg+d EwYUcZkIJtadxTJ/W92wEl1e6m1RZsogLJ5keWV5m1sP3PMHHCsJpcTa3b8rq1a9 tsyI4bjCZHkJ5q2cvO9g3+UutN8MYQj5+mpfnf5r9mQiVDMlgWR8In7BEZ3ZtDRH 5HJtQB6r9vN7ysIahdhJedXANpKz6kIuP/DFiHL+cRI5csdg8M+IfiBi7gkLN/2s I/aHxzX5oZSbBNXK7TmdYFtKHwYDPURsx2FA2A84qSBPWSwr9ay3eroQ8rktNCSR TniIpGhY8Bc6/DqTymuMTHG10+GRuEjqQpE4gwW2dHanehVBQ6iqCzltZ4Lg0u7L k2iBandXGA65jYhWTiGc8IfAbtJeSKVftMslnLWNX7CTiy+gtdgidkHWZ7O9kP71 e/z1+SWohxMnWQhNwQbLy1URCrfr73XoYIwSzLrchlEQ2TFx7aQ= =T03p -----END PGP SIGNATURE----- --=_38746ea321057ba28789d774ddf35b42--