Mailinglist Archive: opensuse-security (260 mails)

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Re: [suse-security] webserver behind firewall with ingoing and outgoing ftp ?
  • From: "Jeremy Buchmann" <jeremy@xxxxxxxxxxxxxxx>
  • Date: Thu, 27 Jul 2000 11:47:07 -0700
  • Message-id: <200007271846.LAA02295@xxxxxxxxxxxxxxxxxxx>
It sounds like you may want to use a redirector. This is a program which
accepts a connection on one interface and redirects it to another. For
example, if you had a web server inside a network that was
masqueraded/firewalled, you'd install the redirector on the firewall and
tell it to redirect any connections from the Internet on port 80 to the Web
server. We have been using the program 'redir' for this for several months
with no problems.

Jeremy Buchmann
System Admin/Database Programmer
Wells Gaming Research

>From: Tobias Gasser <gasser@xxxxxxxxx>
>To: SuSE Security <suse-security@xxxxxxxx>
>Subject: [suse-security] webserver behind firewall with ingoing and outgoing
ftp ?
>Date: Wed, Jul 26, 2000, 11:01 AM

> Hello,
> i need to set up a webserver behind a ipchains packet-filter.
> In the firewals config-file eth0 is the external- and eth1 the
> dmz-device.
> There have to be ingoing _and_ outgoing ftp-connections to the
> webserver.
> So the first problem: How can I handle it to not simply forward
> all high ports to the Webserver ? I tried it with fwproxy, but
> it hangs after entering the login name (just like having not allowed
> ftp connections via hosts.deny - but then I wouldn't even get
> a login prompt).
> The second problem: outgoing ftp-connections work fine if i enable
> masquerading for the webserver - evident - , but then I can't get any
> connections to the webserver, cause the replies are being masqueraded
> - evident too.
> So, is there a simple way to get this to work ?
> Thank you in advance!
> Tobias
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