From owner-freebsd-questions Mon Jul 2 1:54: 5 2001 Delivered-To: freebsd-questions@freebsd.org Received: from seed.pacific.net.sg (seed.pacific.net.sg [203.120.90.77]) by hub.freebsd.org (Postfix) with ESMTP id 872F537B403 for ; Mon, 2 Jul 2001 01:54:01 -0700 (PDT) (envelope-from nchee_hoong@pacific.net.sg) Received: from pop1.pacific.net.sg (pop1.pacific.net.sg [203.120.90.85]) by seed.pacific.net.sg with ESMTP id f628rxY26147 for ; Mon, 2 Jul 2001 16:53:59 +0800 (SGT) Received: from pacific.net.sg ([203.208.143.50]) by pop1.pacific.net.sg with ESMTP id QAA16275 for ; Mon, 2 Jul 2001 16:53:59 +0800 (SGT) Message-ID: <3B4037F4.7A6EB55D@pacific.net.sg> Date: Mon, 02 Jul 2001 16:59:32 +0800 From: Kelvin Ng Chee Hoong X-Mailer: Mozilla 4.77 [en] (WinNT; U) X-Accept-Language: zh-TW,en MIME-Version: 1.0 To: "freebsd-questions@FreeBSD.ORG" Subject: Port scanning Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Hi ; I've enabled TCP_DROP_SYNFIN and TCP_RESTRICT_RST options to against nmap and port scanning. To run the test , I ran nmap from another Linux machine . Although these two options have enabled , nmap still able scan through and list the state of services are running. Question : (1) How do I configure FBSD to against port scanning ? (2) Where log file is stored to capture the event of port scanning ? (3) How do I configure FBSD to send email alert or SMS once encountered port scanning action take place ? Please advise . To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message