From owner-freebsd-questions@FreeBSD.ORG Wed Apr 21 16:34:34 2004 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 0481D16A4D0 for ; Wed, 21 Apr 2004 16:34:34 -0700 (PDT) Received: from server101.samsys.com (198-143-226-154.dsl.btitelecom.net [198.143.226.154]) by mx1.FreeBSD.org (Postfix) with ESMTP id DA8DA43D1F for ; Wed, 21 Apr 2004 16:34:32 -0700 (PDT) (envelope-from peter.tokanel@samsys.com) Received: from samsys.com (DEV11 [10.1.1.211]) by server101.samsys.com with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2653.13) id J2N9AH69; Wed, 21 Apr 2004 19:34:23 -0400 Message-ID: <408704DF.5070907@samsys.com> Date: Wed, 21 Apr 2004 19:33:51 -0400 From: Peter Tokanel User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.0.2) Gecko/20021120 Netscape/7.01 X-Accept-Language: en-us, en MIME-Version: 1.0 To: freebsd-questions@freebsd.org Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Content-Filtered-By: Mailman/MimeDel 2.1.1 Subject: Newbie:Home network mail forwarding X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 21 Apr 2004 23:34:34 -0000 Hi, I am new to unix but I have managed to setup a home network using Free BSD. The FreeBSD box is a gateway/firewall/router for my Windows XP box and a wireless access point. The XP box can access the web just great using the shared connection. My problem is when email is used on the WindowsXP box , no messages can be sent out. I can receive email from my ISP's pop-server just fine. I am not sure if I need to start some kind of mail daemon or what???? Is it my firewall configuration???? I have included some of my setup files, hopefully someone can tell me what I am doing wrong. Thanks in advance...... ___________________________________ rc.conf hostname=".SNOOPY" network_interfaces="vr0 rl0 lo0" ifconfig_vr0="DHCP" ifconfig_rl0="inet 192.168.1.1 netmask 255.255.255.0" linux_enable="YES" moused_enable="YES" moused_port="/dev/psm0" moused_type="auto" usbd_enable="YES" #defaultrouter=`ifconfig vr0 |grep "inet "|awk '{print $6}'` gateway_enable="YES" firewall_enable="YES" firewall_type="simple" firewall_quiet="NO" natd_enable="YES" natd_interface="vr0" natd_flags="-f /etc/natd.conf" tcp_drop_synfin="YES" # Enable ip6fw. #ipv6_firewall_enable="YES" #ipv6_firewall_type="type" # see rc.firewall6 for what goes here #ipv6_firewall_quiet="NO" # Setup caching only name server named_enable="YES" # This file now contains just the overrides from /etc/defaults/rc.conf. # Please make all changes to this file, not to /etc/defaults/rc.conf. # Enable network daemons for user convenience. # Created: Sat Apr 17 09:50:48 2004 linux_enable="YES" # This file now contains just the overrides from /etc/defaults/rc.conf. # Please make all changes to this file, not to /etc/defaults/rc.conf. # Enable network daemons for user convenience. # Created: Sat Apr 17 12:58:28 2004 # -- sysinstall generated deltas -- # Sat Apr 17 12:58:28 2004 inetd_enable="YES" _______________________________________________________ rc.firewall using natd & the simple define #!/bin/sh - # Copyright (c) 1996 Poul-Henning Kamp # All rights reserved. # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions # are met: # 1. Redistributions of source code must retain the above copyright # notice, this list of conditions and the following disclaimer. # 2. Redistributions in binary form must reproduce the above copyright # notice, this list of conditions and the following disclaimer in the # documentation and/or other materials provided with the distribution. # # THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE # ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF # SUCH DAMAGE. # # $FreeBSD: src/etc/rc.firewall,v 1.47 2003/11/02 07:31:44 ru Exp $ # # # Setup system for firewall service. # # Suck in the configuration variables. if [ -z "${source_rc_confs_defined}" ]; then if [ -r /etc/defaults/rc.conf ]; then . /etc/defaults/rc.conf source_rc_confs elif [ -r /etc/rc.conf ]; then . /etc/rc.conf fi fi ############ # Define the firewall type in /etc/rc.conf. Valid values are: # open - will allow anyone in # client - will try to protect just this machine # simple - will try to protect a whole network # closed - totally disables IP services except via lo0 interface # UNKNOWN - disables the loading of firewall rules. # filename - will load the rules in the given filename (full path required) # # For ``client'' and ``simple'' the entries below should be customized # appropriately. setup_loopback () { ############ # Only in rare cases do you want to change these rules # ${fwcmd} add 100 pass all from any to any via lo0 ${fwcmd} add 200 deny all from any to 127.0.0.0/8 ${fwcmd} add 300 deny ip from 127.0.0.0/8 to any } if [ -n "${1}" ]; then firewall_type="${1}" fi ############ # Flush out the list before we begin. # ${fwcmd} -f flush ############ # Network Address Translation. All packets are passed to natd(8) # before they encounter your remaining rules. The firewall rules # will then be run again on each packet after translation by natd # starting at the rule number following the divert rule. # # For ``simple'' firewall type the divert rule should be put to a # different place to not interfere with address-checking rules. # case ${firewall_type} in [Oo][Pp][Ee][Nn]|[Cc][Ll][Ii][Ee][Nn][Tt]) case ${natd_enable} in [Yy][Ee][Ss]) if [ -n "${natd_interface}" ]; then ${fwcmd} add 50 divert natd all from any to any via ${natd_interface} fi ;; esac esac [Ss][Ii][Mm][Pp][Ll][Ee]) ############ # This is a prototype setup for a simple firewall. Configure this # machine as a DNS and NTP server, and point all the machines # on the inside at this machine for those services. ############ # set these to your outside interface network and netmask and ip oif="vr0" onet=`ifconfig vr0 | grep "inet "| awk '{print $6}'` omask=`ifconfig vr0 | grep "inet "| awk '{print $4}'` #"255.255.255.255" oip=`ifconfig vr0 | grep "inet "| awk '{print $2}'` # set these to your inside interface network and netmask and ip iif="rl0" inet="192.168.1.0" imask="255.255.255.0" iip="192.168.1.1" # My ISP's DNS servers dns1="24.25.5.50" dns2="24.25.5.106" dns3="24.25.5.107" setup_loopback # Add internal traffic ${fwcmd} add allow all from any to any via ${iif} # Stop spoofing ${fwcmd} add deny all from ${inet}:${imask} to any in via ${oif} ${fwcmd} add deny all from ${onet}:${omask} to any in via ${iif} # Stop RFC1918 nets on the outside interface ${fwcmd} add deny all from any to 10.0.0.0/8 via ${oif} ${fwcmd} add deny all from any to 172.16.0.0/12 via ${oif} ${fwcmd} add deny all from any to 192.168.0.0/16 via ${oif} # Stop draft-manning-dsua-03.txt (1 May 2000) nets (includes RESERVED-1, # DHCP auto-configuration, NET-TEST, MULTICAST (class D), and class E) # on the outside interface ${fwcmd} add deny all from any to 0.0.0.0/8 via ${oif} ${fwcmd} add deny all from any to 169.254.0.0/16 via ${oif} ${fwcmd} add deny all from any to 192.0.2.0/24 via ${oif} ${fwcmd} add deny all from any to 224.0.0.0/4 via ${oif} ${fwcmd} add deny all from any to 240.0.0.0/4 via ${oif} # Network Address Translation. This rule is placed here deliberately # so that it does not interfere with the surrounding address-checking # rules. If for example one of your internal LAN machines had its IP # address set to 192.0.2.1 then an incoming packet for it after being # translated by natd(8) would match the `deny' rule above. Similarly # an outgoing packet originated from it before being translated would # match the `deny' rule below. case ${natd_enable} in [Yy][Ee][Ss]) if [ -n "${natd_interface}" ]; then ${fwcmd} add divert natd all from any to any via ${natd_interface} fi ;; esac # Stop RFC1918 nets on the outside interface ${fwcmd} add deny all from 10.0.0.0/8 to any via ${oif} ${fwcmd} add deny all from 172.16.0.0/12 to any via ${oif} ${fwcmd} add deny all from 192.168.0.0/16 to any via ${oif} # Stop draft-manning-dsua-03.txt (1 May 2000) nets (includes RESERVED-1, # DHCP auto-configuration, NET-TEST, MULTICAST (class D), and class E) # on the outside interface ${fwcmd} add deny all from 0.0.0.0/8 to any via ${oif} ${fwcmd} add deny all from 169.254.0.0/16 to any via ${oif} ${fwcmd} add deny all from 192.0.2.0/24 to any via ${oif} ${fwcmd} add deny all from 224.0.0.0/4 to any via ${oif} ${fwcmd} add deny all from 240.0.0.0/4 to any via ${oif} # Allow TCP through if setup succeeded ${fwcmd} add pass tcp from any to any established # Allow IP fragments to pass through ${fwcmd} add pass all from any to any frag # Allow setup of incoming email ${fwcmd} add pass tcp from any to ${oip} 25 setup in via {oif} ${fwcmd} add pass tcp from any to ${oip} 110 setup in via {oif} ${fwcmd} add pass tcp from any to ${oip} 995 setup in via {oif} # Allow access to our DNS ${fwcmd} add pass tcp from any to ${oip} 53 setup ${fwcmd} add pass udp from any to ${oip} 53 ${fwcmd} add pass udp from ${oip} 53 to any # Allow access to our WWW ${fwcmd} add pass tcp from any to ${oip} 80 setup # Reject&Log all setup of incoming connections from the outside ${fwcmd} add deny log tcp from any to any in via ${oif} setup # Allow setup of any other TCP connection ${fwcmd} add pass tcp from any to any setup # Allow DNS queries out in the world ${fwcmd} add pass udp from ${oip} to any 53 keep-state # DNS - Allow queries out in the world ${fwcmd} add pass udp from any to ${dns1} 53 ${fwcmd} add pass udp from any to ${dns2} 53 ${fwcmd} add pass udp from any to ${dns3} 53 ${fwcmd} add pass udp from ${dns1} 53 to any ${fwcmd} add pass udp from ${dns2} 53 to any ${fwcmd} add pass udp from ${dns3} 53 to any # Allow NTP queries out in the world ${fwcmd} add pass udp from ${oip} to any 123 keep-state ### ICMP RULES # ICMP packets # Allow all ICMP packets on internal interface ${fwcmd} add pass icmp from any to any via ${iif} # Allow outgoing pings ${fwcmd} add pass icmp from any to any icmptypes 8 out via ${oif} ${fwcmd} add pass icmp from any to any icmptypes 0 in via ${oif} # Allow Destination Unreachable, Source Quench, Time Exceeded, and Bad Header ${fwcmd} add pass icmp from any to any icmptypes 3,4,11,12 via ${oif} # Deny the rest of them #${fwcmd} add deny icmp from any to any # Everything else is denied by default, unless the # IPFIREWALL_DEFAULT_TO_ACCEPT option is set in your kernel # config file. ;; ___________________________________________ -- Any help will be greatly appreciated. Peter