Date: Mon, 26 Sep 2005 09:55:14 +0200 From: "carlopmart@gmail.com" <carlopmart@gmail.com> Cc: freebsd-security <freebsd-security@freebsd.org> Subject: Re: Encrypt some services with ipsec Message-ID: <4337A962.6020600@gmail.com> In-Reply-To: <Pine.BSF.4.44.0509242146130.60044-100000@home.fake.net> References: <Pine.BSF.4.44.0509242146130.60044-100000@home.fake.net>
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Thank you bigby!!!!. Bigby Findrake wrote: > On Sat, 24 Sep 2005, carlopmart@gmail.com wrote: > > >>Hi all, >> >> I have two prodction servers with FreeBSD 5.4 (all security patches >>are applied). They running some services like dns, ssh, http, ftp, etc. >>But I woukd like to encrypt some services for some hosts with ipsec when >>it is accessed. For example: >> >> - DNS resolution: not encrypted. >> - DNS replication master-slave: encrypted by ipsec. >> - Telnet: encrypted by ipsec for some hosts. Deny for the rest. >> - SSH: not encrypted for some hosts, encryted by ipsec for the rest. >> - FTP: encrypted by ipsec. >> - HTTP: encrypted by ipsec. >> >> is it possible to encrypt only certains services under ipsec tunnel?? > > > Someone please check my work. > >>From the man page on setkey, it looks like you can specify ports for the > security policies, so you could specify certain ports to encrypt, and not > specify a blanket/default host-to-host policy for all other traffic, so > that all other unspecified traffic is unencrypted. > > For example: > > ---------------------BEGIN /ETC/IPSEC.CONF------------------------------- > # > # encrypt all dns traffic between master host A (1.1.1.1) slave host B > # (1.1.1.2) > spadd 1.1.1.1 1.1.1.2[53] any -P out ipsec esp/transport//use; > spadd 1.1.1.2[53] 1.1.1.1 any -P in ipsec esp/transport//use; > > spadd 1.1.1.1[53] 1.1.1.2 any -P out ipsec esp/transport//use; > spadd 1.1.1.2 1.1.1.1[53] any -P in ipsec esp/transport//use; > > # > # encrypt telnet traffic between server A (1.1.1.1) and client C (1.1.1.3) > spadd 1.1.1.1[23] 1.1.1.3 any -P out ipsec esp/transport//use; > spadd 1.1.1.3 1.1.1.1[23] any -P in ipsec esp/transport//use; > > # > # encrypt http traffic between server A (1.1.1.1) and client D (1.1.1.4) > spadd 1.1.1.1[80] 1.1.1.4 any -P out ipsec esp/transport//use; > spadd 1.1.1.4 1.1.1.1[80] any -P in ipsec esp/transport//use; > > # > # and all other traffic is unencrypted. > ---------------------END /ETC/IPSEC.CONF------------------------------- > > > > /-------------------------------------------------------------------------/ > I used to hate weddings; all the Grandmas would poke me and > say, "You're next sonny!" They stopped doing that when i > started to do it to them at funerals. > > finger://bigby@ephemeron.org > http://www.ephemeron.org/~bigby/ > news://news.ephemeron.org/alt.lemurs > /-------------------------------------------------------------------------/ > > -- CL Martinez carlopmart {at} gmail {d0t} com
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