From owner-freebsd-questions@freebsd.org Tue Aug 25 15:03:17 2015 Return-Path: Delivered-To: freebsd-questions@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 2917E9C25D5 for ; Tue, 25 Aug 2015 15:03:17 +0000 (UTC) (envelope-from ike@michaeleichorn.com) Received: from mx1.eichornenterprises.com (mx1.eichornenterprises.com [104.236.13.122]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mx1.eichornenterprises.com", Issuer "StartCom Class 1 Primary Intermediate Server CA" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id C4DC8ADA for ; Tue, 25 Aug 2015 15:03:16 +0000 (UTC) (envelope-from ike@michaeleichorn.com) Received: from mail.eichornenterprises.com (cpe-24-166-126-146.neo.res.rr.com [24.166.126.146]); by mx1.eichornenterprises.com (OpenSMTPD) with ESMTP id a2881e18; Tue, 25 Aug 2015 10:56:35 -0400 (EDT) Received: by mail.eichornenterprises.com (OpenSMTPD) with ESMTPSA id de0a094e; TLS version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NO; Tue, 25 Aug 2015 10:56:35 -0400 (EDT) Message-ID: <1440514692.6714.13.camel@michaeleichorn.com> Subject: Re: Blocking SSH access based on bad logins? From: "Michael B. Eichorn" To: Polytropon , Jaime Kikpole Cc: "freebsd-questions@freebsd.org" Date: Tue, 25 Aug 2015 10:58:12 -0400 In-Reply-To: <20150825162841.b8f840ab.freebsd@edvax.de> References: <20150825162841.b8f840ab.freebsd@edvax.de> Content-Type: multipart/signed; micalg="sha-512"; protocol="application/x-pkcs7-signature"; boundary="=-sZSmk6i9hVhTM1V5j1Re" X-Mailer: Evolution 3.16.5 Mime-Version: 1.0 X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 25 Aug 2015 15:03:17 -0000 --=-sZSmk6i9hVhTM1V5j1Re Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Tue, 2015-08-25 at 16:28 +0200, Polytropon wrote: > On Tue, 25 Aug 2015 09:16:16 -0400, Jaime Kikpole wrote: > > I've noticed a number of SSH login attempts for the username "admin" > > on my FreeBSD systems. None of them have a username of "admin". So > > I > > was wondering if there was a way (even via a port) to tell the > > system, > > "If an IP tries to login as 'admin', block that IP." >=20 > I think "fail2ban" is the solution you are searching for. >=20 >=20 >=20 > > I'm already using SSHGuard to block certain obvious attempts to break > > in. I'm fine with altering its configs or adding/switching to a new > > port. >=20 > You'll find "fail2ban" in the FreeBSD ports collection > along with some documentation. It's easy to set up. :-) I thought SSHGuard and fail2ban were both equally vaild solutions to ssh banning. Both use the logged failed attempt and create system level block to the offending IP. 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