在NETBSD上配置ADSL IPF IPNAT

新客网 XKER.COM 2008-01-18 来源：新客网编辑整理 llzqq 收藏本文

　　【新客网FreeBSD教程】配置网卡的IP地址：

　　# vi /etc/ifconfig.rtk0
　　inet 192.168.0.1 netmask 255.255.255.0

　　# vi /etc/ifconfig.tlp0
　　inet 192.168.1.2 netmask 255.255.255.0

　　配置主机名：

　　# vi /etc/myname
　　netbsd
　　# vi /etc/hosts
　　127.0.0.1 localhost netbsd

　　配置DNS解析：

　　# vi /etc/resolv.conf
　　nameserver 202.99.160.68
　　nameserver 202.99.168.8

　　配置网关：

　　# vi /etc/mygate
　　192.168.0.10

　　配置主机本地解析：

　　# vi /etc/hosts
　　192.168.0.10 win2k

　　配置SSHD服务：

　　# vi /etc/defaults/rc.conf
　　sshd=YES
　　# vi /etc/ssh/sshd_config
　　PermitRootLogin yes

　　安装配置ADSL:

　　# pkg_add rp-pppoe-3.5.tgz
　　# mkdir /etc/ppp
　　# cp /usr/pkg/share/examples/rp-pppoe/pppoe.conf /etc/ppp/pppoe.conf
　　# adsl-start

　　配置防火墙代理上网：

　　# vi /etc/ipf.conf

　　=================================/etc/ipf.conf==============================
　　# ----------- ------------------------------ ------------------
　　# | ADSL-Modem|---| ppp0 tlp0 NAT IPF rtk0 |---| Internal Network |
　　# ----------- ------------------------------ ------------------
　　#
　　#
　　# Interface: all
　　# Block all incoming and outgoing packets unless they're allowed later.
　　#
　　block in all
　　block out all

　　# Possibly dangerous: packets with ip-options, short and fragmented packets
　　block in log quick on ppp0 proto icmp from any to any
　　block in log quick all with short
　　block in log quick all with ipopts
　　block in log quick all with frag
　　block in log quick all with opt lsrr
　　block in log quick all with opt ssrr

　　# Local network traffic is allowed
　　pass out quick on lo0
　　pass in quick on lo0
　　pass out quick on rtk0
　　pass in quick on rtk0

　　# Block faked or unlikely "local" addresses
　　block in log body quick on ppp0 from 192.168.0.0/16 to any
　　block in log body quick on ppp0 from 172.16.0.0/12 to any
　　block in log body quick on ppp0 from 10.0.0.0/8 to any
　　block in log body quick on ppp0 from 192.0.2.0/24 to any
　　block in log body quick on ppp0 from 0.0.0.0/8 to any
　　block in log body quick on ppp0 from 127.0.0.0/8 to any
　　block in log body quick on ppp0 from 169.254.0.0/16 to any
　　block in log body quick on ppp0 from 224.0.0.0/3 to any
　　block in log body quick on ppp0 from 204.152.64.0/23 to any

　　# Blocking of outgoing faked or unlikely "internal" addresses
　　block out log body quick on ppp0 from any to 192.168.0.0/16
　　block out log body quick on ppp0 from any to 172.16.0.0/12
　　block out log body quick on ppp0 from any to 10.0.0.0/8
　　block out log body quick on ppp0 from any to 127.0.0.0/8
　　block out log body quick on ppp0 from any to 0.0.0.0/8
　　block out log body quick on ppp0 from any to 169.254.0.0/16
　　block out log body quick on ppp0 from any to 192.0.2.0/24
　　block out log body quick on ppp0 from any to 204.152.64.0/23
　　block out log body quick on ppp0 from any to 224.0.0.0/3

　　# The pass rules to enable Services
　　pass in on ppp0 proto tcp from any to any port = 20 flags S keep state
　　pass in on ppp0 proto tcp from any to any port = 21 flags S keep state
　　pass in on ppp0 proto tcp from any to any port = 22 flags S keep state
　　pass in on ppp0 proto tcp from any to any port = 25 flags S keep state
　　pass in on ppp0 proto tcp from any to any port = 80 flags S keep state
　　pass in on ppp0 proto tcp from any to any port = 110 flags S keep state
　　pass in on ppp0 proto tcp from any to any port = 443 flags S keep state
　　pass in on ppp0 proto tcp from any to any port 55000 >< 56000 flags S keep state

　　# The general pass rules.
　　pass out quick on ppp0 proto tcp from any to any flags S/SAFR keep state keep frags
　　pass out quick on ppp0 proto udp from any to any keep state keep frags
　　pass out quick on ppp0 proto icmp from any to any keep state keep frags
　　=================================/etc/ipf.conf==============================

　　# vi /etc/sysctl.conf
　　net.inet.ip.forwarding=1
　　net.inet.tcp.mss_ifmtu=1

　　# vi /etc/ipnat.conf
　　map ppp0 192.168.0.0/24 -> 0/32 proxy port ftp ftp/tcp mssclamp 1440
　　map ppp0 192.168.0.0/24 -> 0/32 portmap tcp/udp auto mssclamp 1440
　　map ppp0 192.168.0.0/24 -> 0/32 mssclamp 1440

　　启用防火墙设置:

　　# vi /etc/defaults/rc.conf
　　ipfilter=YES # uses /etc/ipf.conf
　　ipnat=YES # uses /etc/ipnat.conf
　　ipfs=YES ipfs_flags="" # save/load ipnat and ipf states
　　ifwatchd=YES

　　配置动态域名更新：

　　# wget http://www.3322.org/dyndnspage/ez-ipupdate-3.0.10.tgz
　　# tar zxvf ez-ipupdate-3.0.10.tgz
　　# cd ez-ipupdate-3.0.10
　　# vi conf_file.c
　　增加一行：
　　#include <errno.h>

　　# vi ez-ipupdate.c
　　注释掉下面几行(4515行)：
　　//else
　　// {
　　// fprintf(stderr, "no update needed at this time\n");
　　// }

　　# ./configure
　　# make
　　# make install
　　设置拨号后自动运行：
　　# vi /etc/ppp/ip-up
　　#!/bin/sh
　　/usr/local/bin/ez-ipupdate -i ppp0 -h nero.3322.org -S qdns -u llzqq:9335333
　　# chmod 700 /etc/ppp/ip-up
　　

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