\u901a\u8fc7SSH\u670d\u52a1\u8fdc\u7a0b\u8bbf\u95eeLinux\u670d\u52a1\u5668\uff0c\u603b\u662f\u7b49\u5f85\u5f88\u4e45\u624d\u80fd\u767b\u9646\u3002<\/p>\n
\u8bd5\u8fc7\u4e0b\u9762\u7684\u65b9\u6cd5\uff0c\u518d\u901a\u8fc7SSH\u670d\u52a1\u8fdc\u7a0b\u8bbf\u95eeLinux\u670d\u52a1\u5668\uff0c\u77ac\u95f4\u767b\u9646\u3002\u3002\u3002\u751a\u662f\u5f00\u5fc3\u3002\u3002\u3002<\/p>\n
vi \/etc\/ssh\/sshd_config<\/p>\n
\u5173\u95ed SSH \u7684 DNS \u53cd\u89e3\u6790,\u6dfb\u52a0\u4e0b\u9762\u4e00\u884c:<\/p>\n
UseDNS no<\/p>\n
\u203b\u867d\u7136\u914d\u7f6e\u6587\u4ef6\u4e2d[UseDNS yes]\u88ab\u6ce8\u91ca\u70b9\uff0c<\/p>\n
\u4f46\u9ed8\u8ba4\u5f00\u5173\u5c31\u662fyes…(SSH\u670d\u52a1\u9ed8\u8ba4\u542f\u7528\u4e86DNS\u53cd\u5411\u89e3\u6790\u7684\u529f\u80fd)<\/p>\n
#############################################################
\n\u4e0a\u7f51\u67e5\u4e86\u76f8\u5173\u7684\u8d44\u6599\uff1a\u2193<\/p>\n
\u5728\u76ee\u6807\u670d\u52a1\u5668\u4e0a\u6709\u4e00\u4e2a\u6587\u4ef6\/etc\/nsswitch.conf \uff0c\u91cc\u9762\u6709\u5982\u4e0b\u4e00\u884c
\nhosts\uff1a files dns
\n\u8fd9\u884c\u7684\u542b\u4e49\u662f \u5bf9\u4e8e\u8bbf\u95ee\u7684\u4e3b\u673a\u8fdb\u884c\u57df\u540d\u89e3\u6790\u7684\u987a\u5e8f\uff0c\u662f\u5148\u8bbf\u95eefile\uff0c\u4e5f\u5c31\u662f\/etc\/hosts\u6587\u4ef6\uff0c\u5982\u679chosts\u4e2d\u6ca1\u6709\u8bb0\u5f55\u57df\u540d\uff0c\u5219\u8bbf\u95eedns\uff0c\u8fdb\u884c\u57df\u540d\u89e3\u6790\uff0c\u5982 \u679cdns\u4e5f\u65e0\u6cd5\u8bbf\u95ee\uff0c\u5c31\u4f1a\u7b49\u5f85\u8bbf\u95ee\u8d85\u65f6\u540e\u8fd4\u56de\uff0c\u56e0\u6b64\u7b49\u5f85\u65f6\u95f4\u6bd4\u8f83\u957f\u3002\u90a3\u5982\u679c\u5c06\u8fd9\u4e00\u884c\u5c4f\u853d\u6389\u662f\u4e0d\u662f\u4e5f\u53ef\u4ee5\u8fbe\u5230\u540c\u6837\u7684\u6548\u679c\u5462\uff1f\u5e94\u8be5\u662f\u53ef\u4ee5\u7684\uff0c\u4f46\u662f\u5982\u679c\u672c\u673a\u8981\u901a \u8fc7\u57df\u540d\u8bbf\u95ee\u5176\u4ed6\u670d\u52a1\u5668\uff0c\u5219\u80af\u5b9a\u65e0\u6cd5\u8bbf\u95ee\uff0c\u56e0\u6b64\u8fd9\u884c\u5e94\u8be5\u9700\u8981\u4fdd\u7559\u3002\u8fd9\u4e2a\u95ee\u9898\u4e5f\u63d0\u793a\u6211\u4eec\uff0cdns\u5982\u679c\u4e0d\u53ef\u7528\uff0c\u4f1a\u5e26\u6765\u7684\u4e00\u4e9b\u526f\u4f5c\u7528\u7684\u3002<\/p>\n
\u76f8\u4fe1\u5f88\u591a\u670b\u53cb\u5728\u4f7f\u7528Linux\u7cfb\u7edf\u7684\u65f6\u5019\u56e0\u4e3a\u5b89\u5168\u6027\u7684\u539f\u56e0\u6452\u5f03\u4e86telnet rlogin \u6216\u8005X-window\uff0c\u800c\u628aopenssh\u4f5c\u4e3a\u81ea\u5df1\u9ed8\u8ba4\u7684\u8fdc\u7a0b\u767b\u5f55\u65b9\u5f0f\u3002\u7136\u800c\u7ecf\u5e38\u4f1a\u9047\u5230\u7684\u4e00\u4e2a\u60c5\u51b5\u662ftelnet\u5230server\u901f\u5ea6\u5f88\u5feb\uff0c\u4f46\u662fssh\u8fde\u63a5 \u7684\u65f6\u5019\u5374\u5f88\u6162\uff0c\u5927\u6982\u8981\u7b49\u534a\u5206\u949f\u751a\u81f3\u66f4\u4e45\u3002ping\u7684\u901f\u5ea6\u4e5f\u975e\u5e38\u597d\uff0c\u8ba9\u4eba\u8bef\u4ee5\u4e3a\u662fssh\u8fde\u63a5\u4e0d\u4e0a\u3002\u4e0b\u9762\u8bf4\u4e0b\u5982\u4f55\u89e3\u51b3\u8fd9\u6837\u7684\u95ee\u9898\uff0c\u6700\u4e3a\u5e38\u89c1\u7684\u539f\u56e0\u662f\u56e0\u4e3a server\u7684sshd\u4f1a\u53bbDNS\u67e5\u627e\u8bbf\u95eeclientIP\u7684hostname\uff0c\u5982\u679cDNS\u4e0d\u53ef\u7528\u6216\u8005\u6ca1\u6709\u76f8\u5173\u8bb0\u5f55\uff0c\u5c31\u4f1a\u8017\u8d39\u5927\u91cf\u65f6\u95f4\u3002<\/p>\n
1, \u5728server\u4e0a\/etc\/hosts\u6587\u4ef6\u4e2d\u628a\u4f60\u672c\u673a\u7684ip\u548chostname\u52a0\u5165
\n2, \u5728server\u4e0a\/etc\/ssh\/sshd_config\u6587\u4ef6\u4e2d\u4fee\u6539\u6216\u52a0\u5165UseDNS=no(\u8fd9\u4e2a\u65b9\u6cd5\u8bd5\u8fc7\u4e86\uff0c\u597d\u7528)
\n3, \u6ce8\u91ca\u6389server\u4e0a\/etc\/resolv.conf\u4e2d\u6240\u6709\u884c\uff08\u5173\u4e8e\u8fd9\u4e2a\u65b9\u6cd5\uff1a\u53e6\u4e00\u53f0\u670d\u52a1\u5668\u867d\u7136\u6ca1\u6709\u6309\u7167\u65b9\u6cd52\u4fee\u6539\u914d\u7f6e\u6587\u4ef6sshd_config\uff0c\u4f46\u662f\u5728\u8fd9\u53f0\u670d\u52a1\u5668resolv.conf\u4e3a\u7a7a\uff0c\u4e5f\u5c31\u662f\u8bf4\u8fd9\u4e2a\u65b9\u6cd5\u4e5f\u597d\u7528\uff09
\n4, \u4fee\u6539server\u4e0a\/etc\/nsswitch.conf\u4e2dhosts\u4e3ahosts: files
\n5, reboot server\u4f7f\u914d\u7f6e\u751f\u6548<\/p>\n","protected":false},"excerpt":{"rendered":"
\u901a\u8fc7SSH\u670d\u52a1\u8fdc\u7a0b\u8bbf\u95eeLinux\u670d\u52a1\u5668\uff0c\u603b\u662f\u7b49\u5f85\u5f88\u4e45\u624d\u80fd\u767b\u9646\u3002 \u8bd5\u8fc7\u4e0b\u9762\u7684\u65b9\u6cd5\uff0c\u518d\u901a\u8fc7SSH\u670d\u52a1\u8fdc\u7a0b\u8bbf\u95eeLin … \u9605\u8bfb\u66f4\u591a<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[49],"tags":[38,75],"class_list":["post-532","post","type-post","status-publish","format-standard","hentry","category-linux","tag-linux","tag-ssh"],"aioseo_notices":[],"jetpack_featured_media_url":"","jetpack-related-posts":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/532","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/comments?post=532"}],"version-history":[{"count":1,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/532\/revisions"}],"predecessor-version":[{"id":533,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/532\/revisions\/533"}],"wp:attachment":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/media?parent=532"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/categories?post=532"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/tags?post=532"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}