{"id":44266,"date":"2024-10-06T14:17:14","date_gmt":"2024-10-06T06:17:14","guid":{"rendered":"https:\/\/server.hk\/cnblog\/44266\/"},"modified":"2024-10-06T14:17:14","modified_gmt":"2024-10-06T06:17:14","slug":"centos-%e4%b8%ad-nat-%e6%a8%a1%e5%bc%8f%e4%b8%8b%e9%9d%9c%e6%85%8b-ip-%e9%80%a3%e6%8e%a5%e5%a4%96%e7%b6%b2","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/44266\/","title":{"rendered":"CentOS \u4e2d NAT \u6a21\u5f0f\u4e0b\u975c\u614b IP \u9023\u63a5\u5916\u7db2"},"content":{"rendered":"

CentOS \u4e2d NAT \u6a21\u5f0f\u4e0b\u975c\u614b IP \u9023\u63a5\u5916\u7db2<\/h1>\n

\u5728\u7576\u4eca\u7684\u7db2\u7d61\u74b0\u5883\u4e2d\uff0c\u8a31\u591a\u4f01\u696d\u548c\u500b\u4eba\u7528\u6236\u9078\u64c7\u4f7f\u7528\u865b\u64ec\u79c1\u4eba\u4f3a\u670d\u5668\uff08VPS\uff09\u4f86\u6eff\u8db3\u5176\u7db2\u7d61\u9700\u6c42\u3002CentOS \u4f5c\u70ba\u4e00\u500b\u7a69\u5b9a\u4e14\u5ee3\u6cdb\u4f7f\u7528\u7684 Linux \u767c\u884c\u7248\uff0c\u5e38\u88ab\u7528\u65bc\u642d\u5efa\u4f3a\u670d\u5668\u3002\u5728\u9019\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u5011\u5c07\u63a2\u8a0e\u5982\u4f55\u5728 CentOS \u4e2d\u914d\u7f6e NAT \u6a21\u5f0f\u4e0b\u7684\u975c\u614b IP \u4ee5\u9023\u63a5\u5916\u7db2\u3002<\/p>\n

NAT \u6a21\u5f0f\u6982\u8ff0<\/h2>\n

NAT\uff08Network Address Translation\uff09\u662f\u4e00\u7a2e\u5c07\u79c1\u6709 IP \u5730\u5740\u8f49\u63db\u70ba\u516c\u5171 IP \u5730\u5740\u7684\u6280\u8853\u3002\u9019\u7a2e\u6280\u8853\u901a\u5e38\u7528\u65bc\u7bc0\u7701 IP \u5730\u5740\u548c\u63d0\u9ad8\u7db2\u7d61\u5b89\u5168\u6027\u3002\u5728 NAT \u6a21\u5f0f\u4e0b\uff0c\u5167\u90e8\u7db2\u7d61\u7684\u8a2d\u5099\u53ef\u4ee5\u901a\u904e\u4e00\u500b\u516c\u5171 IP \u5730\u5740\u8a2a\u554f\u5916\u90e8\u7db2\u7d61\uff0c\u800c\u5916\u90e8\u7db2\u7d61\u7121\u6cd5\u76f4\u63a5\u8a2a\u554f\u5167\u90e8\u8a2d\u5099\u3002<\/p>\n

\u975c\u614b IP \u7684\u91cd\u8981\u6027<\/h2>\n

\u975c\u614b IP \u5730\u5740\u662f\u6307\u5728\u7db2\u7d61\u4e2d\u4e0d\u6703\u6539\u8b8a\u7684 IP \u5730\u5740\u3002\u8207\u52d5\u614b IP \u5730\u5740\u4e0d\u540c\uff0c\u975c\u614b IP \u5730\u5740\u63d0\u4f9b\u4e86\u66f4\u7a69\u5b9a\u7684\u9023\u63a5\uff0c\u9019\u5c0d\u65bc\u9700\u8981\u6301\u7e8c\u9023\u63a5\u7684\u61c9\u7528\u7a0b\u5e8f\uff08\u5982\u4f3a\u670d\u5668\u3001VPN \u548c VoIP\uff09\u5c24\u70ba\u91cd\u8981\u3002\u5728 NAT \u74b0\u5883\u4e2d\u914d\u7f6e\u975c\u614b IP \u5730\u5740\uff0c\u53ef\u4ee5\u78ba\u4fdd\u5167\u90e8\u8a2d\u5099\u5728\u6bcf\u6b21\u91cd\u555f\u5f8c\u4ecd\u7136\u80fd\u5920\u4f7f\u7528\u76f8\u540c\u7684 IP \u5730\u5740\u9032\u884c\u5916\u90e8\u9023\u63a5\u3002<\/p>\n

\u5728 CentOS \u4e2d\u914d\u7f6e NAT \u6a21\u5f0f<\/h2>\n

\u4ee5\u4e0b\u662f\u914d\u7f6e CentOS \u4e2d NAT \u6a21\u5f0f\u7684\u6b65\u9a5f\uff1a<\/p>\n

\u6b65\u9a5f 1\uff1a\u5b89\u88dd\u5fc5\u8981\u7684\u8edf\u4ef6\u5305<\/h3>\n
sudo yum install iptables-services<\/code><\/pre>\n
\u9996\u5148\uff0c\u78ba\u4fdd\u5df2\u5b89\u88dd iptables \u670d\u52d9\uff0c\u9019\u662f\u7528\u65bc\u914d\u7f6e\u9632\u706b\u7246\u548c NAT \u7684\u5de5\u5177\u3002<\/p>\n
\u6b65\u9a5f 2\uff1a\u914d\u7f6e\u7db2\u7d61\u63a5\u53e3<\/h3>\n
\u7de8\u8f2f\u7db2\u7d61\u914d\u7f6e\u6587\u4ef6\uff0c\u901a\u5e38\u4f4d\u65bc \/etc\/sysconfig\/network-scripts\/ \u76ee\u9304\u4e0b\u3002\u5047\u8a2d\u6211\u5011\u7684\u5167\u90e8\u7db2\u7d61\u63a5\u53e3\u70ba eth0\uff0c\u5916\u90e8\u7db2\u7d61\u63a5\u53e3\u70ba eth1\uff0c\u5247\u9700\u8981\u7de8\u8f2f\u76f8\u61c9\u7684\u914d\u7f6e\u6587\u4ef6\u3002<\/p>\n
sudo vi \/etc\/sysconfig\/network-scripts\/ifcfg-eth0<\/code><\/pre>\n
\u5728\u6587\u4ef6\u4e2d\u6dfb\u52a0\u4ee5\u4e0b\u5167\u5bb9\uff1a<\/p>\n
DEVICE=eth0\nBOOTPROTO=static\nONBOOT=yes\nIPADDR=192.168.1.100\nNETMASK=255.255.255.0<\/code><\/pre>\n
\u9019\u88e1\uff0c192.168.1.100 \u662f\u6211\u5011\u70ba\u5167\u90e8\u7db2\u7d61\u5206\u914d\u7684\u975c\u614b IP \u5730\u5740\u3002<\/p>\n
\u6b65\u9a5f 3\uff1a\u914d\u7f6e NAT<\/h3>\n
\u63a5\u4e0b\u4f86\uff0c\u7de8\u8f2f iptables \u914d\u7f6e\u4ee5\u555f\u7528 NAT\u3002\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u4f86\u8a2d\u7f6e NAT \u898f\u5247\uff1a<\/p>\n
sudo iptables -t nat -A POSTROUTING -o eth1 -j MASQUERADE<\/code><\/pre>\n
\u9019\u689d\u547d\u4ee4\u544a\u8a34 iptables \u5c07\u6240\u6709\u5f9e\u5167\u90e8\u7db2\u7d61\u767c\u51fa\u7684\u6d41\u91cf\u8f49\u63db\u70ba\u5916\u90e8\u7db2\u7d61\u63a5\u53e3\u7684 IP \u5730\u5740\u3002<\/p>\n
\u6b65\u9a5f 4\uff1a\u4fdd\u5b58 iptables \u914d\u7f6e<\/h3>\n
sudo service iptables save<\/code><\/pre>\n
\u4fdd\u5b58\u914d\u7f6e\u5f8c\uff0c\u78ba\u4fdd iptables \u670d\u52d9\u5728\u555f\u52d5\u6642\u81ea\u52d5\u904b\u884c\uff1a<\/p>\n
sudo systemctl enable iptables<\/code><\/pre>\n
\u6b65\u9a5f 5\uff1a\u91cd\u555f\u7db2\u7d61\u670d\u52d9<\/h3>\n
sudo systemctl restart network<\/code><\/pre>\n
\u6700\u5f8c\uff0c\u91cd\u555f\u7db2\u7d61\u670d\u52d9\u4ee5\u4f7f\u66f4\u6539\u751f\u6548\u3002<\/p>\n
\u6e2c\u8a66\u9023\u63a5<\/h2>\n
\u5b8c\u6210\u4e0a\u8ff0\u6b65\u9a5f\u5f8c\uff0c\u53ef\u4ee5\u4f7f\u7528 ping \u547d\u4ee4\u6e2c\u8a66\u5167\u90e8\u7db2\u7d61\u8a2d\u5099\u662f\u5426\u80fd\u5920\u6210\u529f\u9023\u63a5\u5230\u5916\u90e8\u7db2\u7d61\uff1a<\/p>\n
ping 8.8.8.8<\/code><\/pre>\n
\u5982\u679c\u80fd\u5920\u6210\u529f ping \u901a\uff0c\u5247\u8868\u793a\u914d\u7f6e\u6210\u529f\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u5728 CentOS \u4e2d\u914d\u7f6e NAT \u6a21\u5f0f\u4e0b\u7684\u975c\u614b IP \u9023\u63a5\u5916\u7db2\u662f\u4e00\u500b\u76f8\u5c0d\u7c21\u55ae\u7684\u904e\u7a0b\u3002\u901a\u904e\u6b63\u78ba\u7684\u914d\u7f6e\uff0c\u60a8\u53ef\u4ee5\u78ba\u4fdd\u5167\u90e8\u8a2d\u5099\u80fd\u5920\u7a69\u5b9a\u5730\u8a2a\u554f\u5916\u90e8\u7db2\u7d61\u3002\u9019\u5c0d\u65bc\u9700\u8981\u7a69\u5b9a\u9023\u63a5\u7684\u61c9\u7528\u7a0b\u5e8f\u4f86\u8aaa\u81f3\u95dc\u91cd\u8981\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 \u9999\u6e2f VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\u4ee5\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4e86\u89e3\u5982\u4f55\u5728 CentOS \u4e2d\u914d\u7f6e NAT \u6a21\u5f0f\u4e0b\u7684\u975c\u614b IP\uff0c\u4ee5\u5be6\u73fe\u7a69\u5b9a\u7684\u5916\u7db2\u9023\u63a5\uff0c\u78ba\u4fdd\u7db2\u7d61\u901a\u4fe1\u9806\u66a2\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4924],"tags":[],"class_list":["post-44266","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/44266","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=44266"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/44266\/revisions"}],"predecessor-version":[{"id":44267,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/44266\/revisions\/44267"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=44266"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=44266"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=44266"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}