From owner-freebsd-security Mon Aug 2 2:59:29 1999 Delivered-To: freebsd-security@freebsd.org Received: from admin.cdotb.ernet.in (admin.cdotb.ernet.in [202.41.72.2]) by hub.freebsd.org (Postfix) with SMTP id 8288B1504A for ; Mon, 2 Aug 1999 02:59:01 -0700 (PDT) (envelope-from amit@cdotb.ernet.in) Received: from ws9.cdotb.ernet.in by admin.cdotb.ernet.in (SMI-8.6/SMI-SVR4) id PAA13287; Mon, 2 Aug 1999 15:26:58 -0500 Received: from localhost by ws9.cdotb.ernet.in (5.65v4.0/1.1.19.2/15Dec98-0204PM) id AA03081; Mon, 2 Aug 1999 15:27:16 +0500 Date: Mon, 2 Aug 1999 15:27:16 +0500 (GMT+0500) From: "Amit Kr.Jain" To: "N. N.M" Cc: freebsd-security@FreeBSD.ORG Subject: Re: Increasing SYN-ACK queue In-Reply-To: <19990802065001.91481.qmail@hotmail.com> Message-Id: Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-security@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Hi!! The size of connection queue can be specified as the second argument of listen system call and the time out can be specified by using the connect with a time out. amit. ******************************************************************************* WORK HOME ------ ------ Amit Kr Jain, Flat No 7/2 (Research Engineer), 7th cross C-DOT, KHM Block 2nd floor, Sneha Complex, Opp Shanti Sagar. 71/1 Miller Road, R.T.Nagar BANGALORE - 560052 BANGALORE. Voice - 080-2263399 ext 247/329 080-2261529 email: amit@cdotb.ernet.in ******************************************************************************* On Sun, 1 Aug 1999, N. N.M wrote: > Hi everybody, > > As I learned, the "increasing the size of the connection queue (SYN-ACK > queue)" and also "decreasing the time-out waiting for 3-way handshaking" are > necessary for a host to decrease the probabilty of DoS (Denial of Service) > attack. Could anyone tell me how I can manipulate these two options in > FreeBSD? > > thanks in advance, > Nazila > > > ______________________________________________________ > Get Your Private, Free Email at http://www.hotmail.com > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-security" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message