{"id":2411,"date":"2016-01-05T17:40:20","date_gmt":"2016-01-05T09:40:20","guid":{"rendered":"http:\/\/www.chenlianfu.com\/?p=2411"},"modified":"2016-04-12T13:24:59","modified_gmt":"2016-04-12T05:24:59","slug":"centos%e7%b3%bb%e7%bb%9fnat%e5%85%b1%e4%ba%ab%e4%b8%8a%e7%bd%91","status":"publish","type":"post","link":"http:\/\/www.chenlianfu.com\/?p=2411","title":{"rendered":"CentOS\u7cfb\u7edfNAT\u5171\u4eab\u4e0a\u7f51"},"content":{"rendered":"

\u73b0\u5728\u6709\u670d\u52a1\u5668A\u901a\u8fc7PPPOE\u8054\u7f51\uff0c\u800c\u670d\u52a1\u5668B\u76f4\u63a5\u548c\u670d\u52a1\u5668A\u4f7f\u7528\u7f51\u7ebf\u8fde\u63a5\u3002\u82e5\u9700\u8981\u4f7fB\u80fd\u6b63\u5e38\u4e0a\u7f51\uff0c\u5219\u9700\u8981\u5c06A\u7684\u7f51\u7edc\u5171\u4eab\u7ed9B\u3002\u6b64\u5916\uff0c\u670d\u52a1\u5668A\u548cB\u90fd\u5177\u6709\u591a\u7f51\u53e3\uff0c\u5e76\u90fd\u662fCentOS\u7cfb\u7edf\u3002\u5c06\u670d\u52a1\u5668A\u7684\u7f51\u7edc\u5171\u4eab\u7ed9B\uff0c\u5176\u5bf9\u4e24\u53f0\u670d\u52a1\u5668\u7684\u8bbe\u7f6e\u5982\u4e0b\uff1a<\/p>\n

1. \u670d\u52a1\u5668A\u7684\u8bbe\u7f6e<\/h1>\n

1.1 \u670d\u52a1\u5668A\u7684\u7b2c\u4e00\u4e2a\u7f51\u53e3\u8fdb\u884cpppoe\u8fde\u63a5<\/h2>\n

\u5c06\u7f51\u7ebf\u63d2\u5165\u5230\u670d\u52a1\u5668A\u7684\u7b2c\u4e00\u4e2a\u7f51\u53e3eth0\uff0c\u7136\u540e\u8bbe\u7f6e\u670d\u52a1\u5668A\u7684PPPOE\u8fde\u63a5\uff1a<\/p>\n

\r\n\u5b89\u88c5pppoe\u8f6f\u4ef6\r\n# yum install rp-pppoe\r\n\u914d\u7f6epppoe\u8bbe\u7f6e\uff0c\u586b\u5199\u4e0a\u7f51\u8d26\u53f7\u548c\u5bc6\u7801\uff0c\u8be5pppoe\u914d\u7f6e\u540d\u79f0\u4e3appp0\uff0c\u4fdd\u8bc1\u5bf9\u5e94\u7684\u7f51\u53e3\u4e3aeth0\uff0c\u8bbe\u7f6e\u3002\r\n# pppoe-setup\r\n\u5173\u95edppp0\u7684\u8fde\u63a5\r\n# ifdown ppp0\r\n\u5f00\u542fppp0\u7684\u8fde\u63a5\r\n# ifup ppp0\r\n\u82e5\u53d1\u73b0ppp0\u8fde\u63a5\u4e0d\u4e0a\uff0c\u8f93\u5165\u4e0b\u9762\u547d\u4ee4\u540e\u518d\u8fde\u63a5\r\n# pppoe-stop\r\n<\/pre>\n
1.2 \u670d\u52a1\u5668A\u7684\u7b2c\u4e8c\u4e2a\u7f51\u53e3\u7684IP\u8bbe\u7f6e<\/h2>\n
\u518d\u5c06\u670d\u52a1\u5668A\u7684eth1\u53e3\u548c\u670d\u52a1\u5668B\u7684eth1\u53e3\u8fdb\u884c\u8fde\u63a5\u3002\u5bf9\u670d\u52a1\u5668A\u7684eth1\u53e3\u8fdb\u884c\u8bbe\u7f6e\uff1a<\/p>\n
\r\n# setup\r\n\u901a\u8fc7setup\u547d\u4ee4\u914d\u7f6eeth1\u7684IP\uff0c\u8bbe\u7f6e\u5176\uff1a\r\nIP\u5730\u5740:192.168.1.1\r\n\u5b50\u7f51\u63a9\u7801\uff1a255.255.255.0\r\n\u7f51\u5173\uff1a192.168.1.1\r\nDNS1\uff1a211.69.143.1\r\nDNS2\uff1a8.8.8.8\r\n\r\n\u5176\u4e2dDNS1\u662f\u6211\u4eec\u5b66\u6821\u63d0\u4f9b\u7684DNS\u670d\u52a1\u5668\u7f51\u5740\uff0cDNS2\u662fgoogle\u63d0\u4f9b\u7684DNS\u7f51\u5740\u3002\u53ef\u80fd\u5728\u4e0d\u540c\u7684\u5730\u65b9\u5176DNS\u7f51\u5740\u4e0d\u4e00\u6837\u3002\r\n\u7136\u540e\uff0c\u4fee\u6539 eth0 \u548c eth1 \u7684\u914d\u7f6e\u6587\u4ef6\uff0c\u8bbe\u7f6e\u8fd9\u4e24\u4e2a\u7f51\u53e3\u5f00\u673a\u542f\u52a8\uff1a\r\n# vi \/etc\/sysconfig\/network-scripts\/ifcfg-eth0\r\n# vi \/etc\/sysconfig\/network-scripts\/ifcfg-eth1\r\nONBOOT=yes\r\n<\/pre>\n
1.3 \u5c06\u670d\u52a1\u5668A\u7684ppp0\u7f51\u7edc\u8fdb\u884cNAT\u5171\u4eab<\/h2>\n
\u9996\u5148\uff0c\u4fee\u6539\u914d\u7f6e\u6587\u4ef6\/etc\/sysctl.conf\u7684\u4e00\u4e2a\u53c2\u6570\u6765\u5f00\u542f\u4f7f\u7528NAT\u8fdb\u884cIP\u8f6c\u53d1\u3002<\/p>\n
\r\n$ perl -p -i -e 's\/net.ipv4.ip_forward =.*\/net.ipv4.ip_forward = 1\/' \/etc\/sysctl.conf\r\n<\/pre>\n
\u518d\u4f7f\u7528iptables\u547d\u4ee4\u6765\u5bf9ppp0\u8fdb\u884c\u7f51\u7edc\u5171\u4eab\u3002<\/p>\n
\r\n\u751f\u6210\u6587\u4ef6 \/usr\/local\/bin\/ishare \u5e76\u4f7f\u5176\u53ef\u6267\u884c\uff0c\u6267\u884c\u8be5\u547d\u4ee4\uff0c\u5373\u53ef\u5171\u4eab ppp0 \u7f51\u7edc\u3002\r\n# echo '#!\/bin\/bash\r\n## Internet connection shating script\r\nsysctl -w net.ipv4.ip_forward=1\r\nsysctl -p\r\niptables -X\r\niptables -F\r\niptables -t nat -X\r\niptables -t nat -F\r\niptables -I INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT\r\niptables -I FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT\r\niptables -t nat -I POSTROUTING -o ppp0 -j MASQUERADE' > \/usr\/local\/bin\/ishare\r\n# chmod 755 \/usr\/local\/bin\/ishare\r\n# \/usr\/local\/bin\/ishare\r\n\r\n\u82e5\u9700\u8981\u5f00\u673a\u5219\u542f\u52a8\u8be5\u547d\u4ee4\uff1a\r\n# echo '\/usr\/local\/bin\/ishare' >> \/etc\/rc.d\/rc.local\r\n<\/pre>\n
1.4 \u91cd\u542f\u670d\u52a1\u5668A\u7684\u7f51\u7edc\u8bbe\u7f6e<\/h2>\n
\u670d\u52a1\u5668A\u7684\u914d\u7f6e\u4fee\u6539\u5b8c\u6bd5\uff0c\u7136\u540e\u91cd\u542f\u670d\u52a1\u5668A\u7684\u7f51\u7edc\uff0c\u4f7f\u914d\u7f6e\u751f\u6548\uff1a<\/p>\n
\r\n# \/etc\/init.d\/network restart\r\n\u4fdd\u8bc1\u770b\u5230pppoe\u548ceth1\u7f51\u7edc\u7684\u6b63\u5e38\u542f\u52a8\u3002\r\n<\/pre>\n
2. \u670d\u52a1\u5668B\u7684\u8bbe\u7f6e<\/h1>\n
\u914d\u7f6e\u670d\u52a1\u5668B\u7684 eth1 \u7f51\u53e3\uff1a<\/p>\n
\r\n# setup\r\n\u901a\u8fc7setup\u547d\u4ee4\u914d\u7f6eeth1\u7684IP\uff0c\u8bbe\u7f6e\u5176\uff1a\r\nIP\u5730\u5740:192.168.1.2\r\n\u5b50\u7f51\u63a9\u7801\uff1a255.255.255.0\r\n\u7f51\u5173\uff1a192.168.1.1\r\nDNS1\uff1a211.69.143.1\r\nDNS2\uff1a8.8.8.8\r\n\r\n\u4fee\u6539 eth1 \u7684\u914d\u7f6e\u6587\u4ef6\uff0c\u8bbe\u7f6e\u8fd9\u8be5\u7f51\u53e3\u5f00\u673a\u542f\u52a8\uff1a\r\n# vi \/etc\/sysconfig\/network-scripts\/ifcfg-eth1\r\nONBOOT=yes\r\n\r\n\u518d\u91cd\u542f\u91cd\u542f\u670d\u52a1\u5668B\u7684\u7f51\u7edc\u8bbe\u7f6e\r\n# \/etc\/init.d\/network restart\r\n\u4fdd\u8bc1\u770b\u5230eth1\u7f51\u7edc\u7684\u6b63\u5e38\u542f\u52a8\u3002\r\n<\/pre>\n
3. \u4f1a\u51fa\u73b0\u7684\u95ee\u9898<\/h1>\n
\u4ee5\u4e0a\u8bbe\u7f6e\u5b8c\u6bd5\u540e\uff0c\u901a\u8fc7 ping \u547d\u4ee4\u6765\u68c0\u6d4b\u670d\u52a1\u5668B\u662f\u5426\u80fd\u8054\u7f51\u3002\u82e5\u670d\u52a1\u5668ping\u4e0d\u901a192.168.1.1\uff0c\u5219\u8868\u793a\u670d\u52a1\u5668B\u548c\u670d\u52a1\u5668A\u8fde\u63a5\u4e0d\u901a\uff1b\u82e5\u80fdping\u901a192.168.1.1\u800c\u4e0d\u80fd\u8054\u5916\u7f51\uff0c\u5219\u8868\u793a\u670d\u52a1\u5668A\u6ca1\u6709\u5f00\u542f\u5171\u4eab\u6216\u670d\u52a1\u5668A\u6ca1\u6709\u8054\u7f51\u3002\u9700\u8981\u6309\u7167\u4e0a\u8ff0\u6559\u7a0b\u9010\u6b65\u6392\u67e5\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u73b0\u5728\u6709\u670d\u52a1\u5668A\u901a\u8fc7PPPOE\u8054\u7f51\uff0c\u800c\u670d\u52a1\u5668B\u76f4\u63a5\u548c\u670d\u52a1\u5668A\u4f7f\u7528\u7f51\u7ebf\u8fde\u63a5\u3002\u82e5\u9700\u8981\u4f7f … \u7ee7\u7eed\u9605\u8bfb →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"http:\/\/www.chenlianfu.com\/index.php?rest_route=\/wp\/v2\/posts\/2411"}],"collection":[{"href":"http:\/\/www.chenlianfu.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.chenlianfu.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.chenlianfu.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.chenlianfu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2411"}],"version-history":[{"count":3,"href":"http:\/\/www.chenlianfu.com\/index.php?rest_route=\/wp\/v2\/posts\/2411\/revisions"}],"predecessor-version":[{"id":2425,"href":"http:\/\/www.chenlianfu.com\/index.php?rest_route=\/wp\/v2\/posts\/2411\/revisions\/2425"}],"wp:attachment":[{"href":"http:\/\/www.chenlianfu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2411"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.chenlianfu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2411"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.chenlianfu.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2411"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}