{"id":127077,"date":"2023-04-10T12:55:52","date_gmt":"2023-04-10T04:55:52","guid":{"rendered":"http:\/\/www.idc.net\/help\/127077\/"},"modified":"2023-04-10T12:55:52","modified_gmt":"2023-04-10T04:55:52","slug":"%e6%8e%a2%e7%b4%a2linux%e4%b8%adsshd%e6%97%a5%e5%bf%97%e7%9a%84%e4%bd%bf%e7%94%a8%e6%96%b9%e6%b3%95-sshd%e7%9a%84%e6%97%a5%e5%bf%97-linux","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/127077\/","title":{"rendered":"\u63a2\u7d22Linux\u4e2dsshd\u65e5\u5fd7\u7684\u4f7f\u7528\u65b9\u6cd5 (sshd\u7684\u65e5\u5fd7 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14 18:02:38 localhost sshd[962]: pam_unix(sshd:auth): authentication flure; logname= uid=0 euid=0 tty=ssh ruser= rhost=192.168.0.100 user=root<\/p>\n<p>\u5176\u4e2d\uff0c\u8be5\u65e5\u5fd7\u8bb0\u5f55\u6765\u6e90\u4e3alocalhost\u4e3b\u673a\u4e0asshd\u670d\u52a1\uff0c\u65e5\u5fd7\u7ea7\u522b\u4e3ainfo\u7ea7\u522b\uff0c\u65e5\u5fd7\u65f6\u95f4\u4e3a11\u670814\u65e518:02:38\uff0c\u540e\u9762\u5305\u62ec\u4e86sshd\u670d\u52a1\u8fdb\u7a0bID\uff0c\u6536\u5230\u4e86\u4e00\u4e2a\u975e\u6cd5\u767b\u5f55\u7528\u6237\u7684\u767b\u5f55\u4fe1\u606f\uff08authentication flure\uff09\u3002<\/p>\n<p>sshd\u65e5\u5fd7\u7684\u5206\u6790<\/p>\n<p>\u5728Linux\u7cfb\u7edf\u4e2d\uff0crsyslog\u670d\u52a1\u7ec4\u4ef6\u53ef\u4ee5\u8bbe\u7f6e\u8fc7\u6ee4sshd\u7684\u65e5\u5fd7\u7ea7\u522b\u7b56\u7565\uff0c\u4ee5\u6392\u9664\u4e00\u4e9b\u65e5\u5fd7\u8bb0\u5f55\u91cf\u6bd4\u8f83\u5927\u3001\u91cd\u590d\u6027\u9ad8\u548c\u4e0d\u5fc5\u8981\u7684\u65e5\u5fd7\u8bb0\u5f55\uff0c\u4ece\u800c\u66f4\u52a0\u7cbe\u51c6\u3001\u9ad8\u6548\u5730\u76d1\u63a7\u548c\u68c0\u6d4bsshd\u5b89\u5168\u6f0f\u6d1e\u548c\u5f02\u5e38\u767b\u5f55\u884c\u4e3a\u3002<\/p>\n<p>\u5177\u4f53\u5206\u6790\u65b9\u6cd5\u5982\u4e0b\uff1a<\/p>\n<p>1. \u67e5\u770bsshd\u65e5\u5fd7\u6587\u4ef6\uff1a\u901a\u8fc7\u67e5\u770b\/var\/log\/secure\u6587\u4ef6\u53ef\u67e5\u770bsshd\u7684\u65e5\u5fd7\u4fe1\u606f\u3002<\/p>\n<p>2. 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\u2013 Linux<\/li>\n<li>linux connection timed out\u600e\u4e48\u89e3\u51b3<\/li>\n<\/ul>\n<h3>\u670d\u52a1\u5668\u5b89\u5168\u52a0\u56fa \u2013 Linux<\/h3>\n<p>\u67e5\u770b \/etc\/passwd \u6587\u4ef6\u67e5\u770b\u662f\u5426\u6709\u65e0\u7528\u7801\u5490\u7684\u8d26\u53f7\uff0c\u5982\u679c\u5b58\u5728\u5219\u5220\u9664\uff0c\u964d\u4f4e\u5b89\u5168\u98ce\u9669\u3002 <\/p>\n<p> \u64cd\u4f5c\u6b65\u9aa4\uff1a <\/p>\n<p> \u64cd\u4f5c\u6b65\u9aa4\uff1a <\/p>\n<p> \u64cd\u4f5c\u6b65\u9aa4 <\/p>\n<p> \u64cd\u4f5c\u6b65\u9aa4 <\/p>\n<p> \u4f7f\u7528\u547d\u4ee4 vim \/etc\/pam.d\/su \u4fee\u6539\u914d\u7f6e\u6587\u4ef6\uff0c\u5728\u914d\u7f6e\u6587\u4ef6\u4e2d\u6dfb\u52a0\u884c\u3002<\/p>\n<p> \u4f8b\u5982\uff0c\u53ea\u5141\u8bb8admin\u7ec4\u7528\u6237su\u5230root\uff0c\u5219\u6dfb\u52a0 auth required pam_wheel.so group=admin \u3002<\/p>\n<p> \u3010\u53ef\u9009\u3011\u4e3a\u4e86\u65b9\u4fbf\u64cd\u4f5c\uff0c\u53ef\u914d\u7f6eadmin\u652f\u6301\u514d\u5bc6sudo\uff1a\u5728 \/etc\/sudoers \u6587\u4ef6\u4e2d\u6dfb\u52a0 admin ALL=(ALL) NOPASSWD:ALL <\/p>\n<p> \u4e3a\u4e86\u9632\u6b62\u4f7f\u7528\u201dsu\u201d\u547d\u4ee4\u5c06\u5f53\u524d\u7528\u6237\u73af\u5883\u53d8\u91cf\u5e26\u5165\u5176\u5b83\u7528\u6237\uff0c\u4fee\u6539\/etc\/login.defs\u6dfb\u52a0ALWAYS_SET_PATH=yes\u5e76\u4fdd\u5b58\u3002 <\/p>\n<p> \u64cd\u4f5c\u6b65\u9aa4 <\/p>\n<p> \u64cd\u4f5c\u6b65\u9aa4\uff1a <\/p>\n<p> \u67e5\u770b\u6240\u6709\u670d\u52a1\u5217\u8868 systemctl list-units \u2013type=service <\/p>\n<p> \u64cd\u4f5c\u6b65\u9aa4 <\/p>\n<p> \u4f7f\u7528\u547d\u4ee4 vim \/etc\/ssh\/sshd_config \u7f16\u8f91\u914d\u7f6e\u6587\u4ef6\u3002<\/p>\n<p> \u914d\u7f6e\u6587\u4ef6\u4fee\u6539\u5b8c\u6210\u540e\uff0c\u91cd\u542fsshd\u670d\u52a1\u751f\u6548\uff08systemctl restart sshd\uff09\u3002 <\/p>\n<p> \u64cd\u4f5c\u6b65\u9aa4 <\/p>\n<p> \u4fee\u6539\/etc\/profile \u914d\u7f6e\u6587\u4ef6\uff0c\u6dfb\u52a0\u884c umask 027 \uff0c 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