Date: Mon, 02 Feb 2004 12:05:48 -0500 From: "HOLLOW, CHRISTOPHER" <christopher.hollow@cgi.com> To: Barbish3@adelphia.net Cc: questions@freebsd.org Subject: Re: proxies and firewalls Message-ID: <401E836C.6070307@cgi.com> In-Reply-To: <MIEPLLIBMLEEABPDBIEGOEJGFHAA.Barbish3@adelphia.net> References: <MIEPLLIBMLEEABPDBIEGOEJGFHAA.Barbish3@adelphia.net>
next in thread | previous in thread | raw e-mail | index | archive | help
Proxy doesn't necessarily solve the privateIP-to-publicIP problem. NAT does: http://www.cablemodemhelp.com/proxy_vs_nat.htm Proxy is application level. NAT is address translation. HTH, Christopher Hollow JJB wrote: > Thanks for your reply, But I must be thick headed this morning, > because what you say below makes no sense to me. > I checked out the 2 referenced descriptions and they say > nothing about doing nat. > > I have Lan with private ip address that send packets to > public internet. How does an proxy server solve the private ip > address versus my public ip address problem? > > -----Original Message----- > From: owner-freebsd-questions@freebsd.org > [mailto:owner-freebsd-questions@freebsd.org]On Behalf Of > jan.muenther@nruns.com > Sent: Monday, February 02, 2004 11:28 AM > To: JJB > Cc: Jorn Argelo; questions@freebsd.org > Subject: Re: proxies and firewalls > > >>Are you saying you know of an proxy server that does the nat >>function? > > > Actually, the point of having proxies is *not* having > to route. Your proxy machine should not be able to forward packets. > > Roughly, there a two different sub-groups: Circuit layer and > application > layer proxies, names should be self explaining. > > Example for an app layer gateway: > > Port: fwtk-2.1 > Path: /usr/ports/security/fwtk > Info: A toolkit used for building firewalls based on proxy > services > > > Example for a circuit level proxy: > > Port: nylon-1.2 > Path: /usr/ports/net/nylon > Info: A Unix SOCKS 4 and 5 proxy server > > > Socks5 is already app layer, too, IIRC. > > Cheers, J. > > > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to > "freebsd-questions-unsubscribe@freebsd.org" > > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" >
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?401E836C.6070307>