一台双网卡服务器，安装Ubuntu Server 12.04，网卡 eth0 空置，eth1连接局域网，IP 192.168.1.1/24，先连接了宽带路由器。 二、Squid3 尝试源码安装当前最新的Squid3.3，遇到很多问题，懒得弄了，用Ubuntu源里的3.1.19吧。 $sudo apt-get install squid3 配置文件在 /etc/squid3/squid.conf，这个配置文件包含详细的说明，总共5700多行，备份一份出来仔细研究吧，再从百度、Bing、谷歌里搜一搜，最后出来这么个配置文件： acl alldst dst all acl manager proto cache_object acl localhost src 127.0.0.1/32 ::1 acl to_localhost dst 127.0.0.0/8 0.0.0.0/32 ::1 acl localnet src 192.168.1.0/16 # 修改后的 acl SSL_ports port 443 acl Safe_ports port 80 # http acl Safe_ports port 21 # ftp acl Safe_ports port 443 # https acl Safe_ports port 70 # gopher acl Safe_ports port 210 # wais acl Safe_ports port 1025-65535 # unregistered ports acl Safe_ports port 280 # http-mgmt acl Safe_ports port 488 # gss-http acl Safe_ports port 591 # filemaker acl Safe_ports port 777 # multiling http acl CONNECT method CONNECT forwarded_for delete # 修改后的，否则在远程服务器上会收到包含内网IP的 HTTP头数据（X_Forwarded_for） acl_uses_indirect_client on delay_pool_uses_indirect_client on http_access allow manager localhost http_access deny manager http_access deny !Safe_ports http_access deny CONNECT !SSL_ports http_access allow localnet # 修改后的 http_port 192.168.1.1:3128 # 修改后的 cache_mem 1024 MB #自己看情况设定。 maximum_object_size_in_memory 2048 KB #内存缓存的最大对象。 cache_dir ufs /opt/cache 200000 16 256 #/opt 是个独立分区 240G，分配约200G做cache。 coredump_dir /var/spool/squid3 logformat custcommon %>a [%tl] %3>Hs %8<st %Ss:%Sh %rm "%ru" %mt access_log /var/log/squid3/access.log custcommon # logformat logformat squid %ts.%03tu %6tr %>a %Ss/%03>Hs %<st %rm %ru %un %Sh/%<A %mt # access_log /var/log/squid3/access.log squid # 这里修改了一下默认的日志格式，更方便阅读。 # 原格式 1361289819.737 21 192.168.1.100 TCP_DENIED/403 4295 GET http://askubuntu.com/tags - NONE/- text/html # 新格式 192.168.1.100 [21/Feb/2013:13:29:45 +0800] 200 13813 TCP_MISS:DIRECT GET "http://common.cnblogs.com/editor/tiny_mce/plugins/insertCode/images/insertCode.gif" image/gif # # Add any of your own refresh_pattern entries above these. refresh_pattern ^ftp: 1440 20% 10080 refresh_pattern ^gopher: 1440 0% 1440 refresh_pattern -i (/cgi-bin/|\?) 0 0% 0 refresh_pattern (Release|Packages(.gz)*)$ 0 20% 2880 # example lin deb packages #refresh_pattern (\.deb|\.udeb)$ 129600 100% 129600 refresh_pattern . 0 20% 4320 内网Firefox设置代理 192.168.1.1:3128 上网正常！ 三、PPPOE 1、安装、设置 $ sudo apt-get install pppoe 撤掉宽带路由器，宽带猫直接连到eth0。 $ sudo pppoeconf 进入向导安装模式，基本都是回答yes，尤其是开机自动连接，再填上宽带用户名和密码，ADSL连接就设好了。手动管理ADSL指令如下： $ ifconfig ppp0 #查看ADSL连接状态 $ sudo pon dsl-provider #手动连接ADSL $ sudo poff #手动断开ADSL $ sudo plog #查看ADSL连接日志，仅显示最后一次连接。 2、DNS DNS设置在 pppoeconf向导中可以设置为从ISP获得，如果喜欢设置自己的DNS，则 $ sudo vi /etc/resolv.conf nameserver 8.8.8.8 3、网络接口，注：auto dsl-provider开始的内容是pppoeconf向导添加的： $ cat /etc/network/interfaces # This file describes the network interfaces available on your system # and how to activate them. For more information, see interfaces(5). # The loopback network interface auto lo iface lo inet loopback auto eth1 iface eth1 inet static address 192.168.1.1 netmask 255.255.255.0 network 192.168.1.0 broadcast 192.168.1.255 # gateway 192.168.1.254 dns-nameservers 8.8.8.8 dnd-search domain.com auto dsl-provider iface dsl-provider inet ppp pre-up /sbin/ifconfig eth0 up # line maintained by pppoeconf provider dsl-provider auto eth0 iface eth0 inet manual 4、ADSL断线自动重拨，找到/etc/ppp/options 文件里如下几行 # Do not exit after a connection is terminated; instead try to reopen # the connection. # persist 去掉 # persist 之前的"# "，试试断开ADSL、重启网络、拔掉ADSL网线片刻再插上等操作，ADSL会在不久之后重新连接，这个时间么，，，有点儿长。 四、Iptables Ubuntu安装了 iptables，但默认没有启动iptables，也不像 RHEL/Centos 那样把iptables设置为服务。从Centos里复制出来一份 iptables 配置文件，按照自己的需要修改成如下内容： # Copied from Centos6 # Firewall configuration written by system-config-firewall # Manual customization of this file is not recommended. *filter :INPUT ACCEPT [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [0:0] -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT -A INPUT -p icmp -j ACCEPT -A INPUT -i lo -j ACCEPT -A INPUT -m state -s 192.168.1.0/24 --state NEW -m tcp -p tcp --dport 22 -j ACCEPT #仅允许内网连接ssh -A INPUT -m state -s 192.168.1.0/24 --state NEW -m tcp -p tcp --dport 3128 -j ACCEPT #仅允许内网连接代理服务 -A INPUT -j REJECT --reject-with icmp-host-prohibited -A FORWARD -j REJECT --reject-with icmp-host-prohibited COMMIT 编辑网络配置文件, 在相应网卡的配置文件里增加一句 pre-up iptables-restore /etc/iptables 我的配置如下： $ sudo vi /etc/network/interfaces auto dsl-provider iface dsl-provider inet ppp pre-up /sbin/ifconfig eth0 up # line maintained by pppoeconf pre-up iptables-restore /etc/iptables provider dsl-provider 重启网络 $ sudo /etc/init.d/networking restart 用nmap测试： 配置iptables之前 Nmap scan report for 113.227.36.81 Host is up (0.25s latency). Not shown: 992 closed ports PORT STATE SERVICE 22/tcp open ssh 135/tcp filtered msrpc 139/tcp filtered netbios-ssn 445/tcp filtered microsoft-ds 593/tcp filtered http-rpc-epmap 1025/tcp filtered NFS-or-IIS 1434/tcp filtered ms-sql-m 4444/tcp filtered krb524 之后 Nmap scan report for 113.227.56.137 Host is up (0.48s latency). Not shown: 999 filtered ports PORT STATE SERVICE 113/tcp closed auth Nmap scan report for 192.168.1.1 Host is up (0.00022s latency). Not shown: 998 filtered ports PORT STATE SERVICE 22/tcp open ssh 3128/tcp open squid-http 内网Firefox设置代理 192.168.1.1:3128 上网正常！ 转载请保留固定链接： https://linuxeye.com/configuration/1283.html |