{"id":402,"date":"2015-01-25T17:11:58","date_gmt":"2015-01-25T17:11:58","guid":{"rendered":"http:\/\/69cb3ea317a32c4e6143e665fdb20b14"},"modified":"2018-10-20T00:02:35","modified_gmt":"2018-10-19T16:02:35","slug":"ssh","status":"publish","type":"post","link":"https:\/\/www.xiaobo.li\/notes\/archives\/402","title":{"rendered":"ssh"},"content":{"rendered":"

#\u6dfb\u52a0\u7528\u6237<\/p>\n

useradd uesrname<\/p>\n

#\u8bbe\u7f6e\u7528\u6237\u5bc6\u7801<\/p>\n

passwd username<\/p>\n

 <\/p>\n

\u5141\u8bb8\/\u7981\u6b62root\u767b\u5f55
\nvi \/etc\/ssh\/sshd_config<\/p>\n

#\u662f\u5426\u5141\u8bb8root\u767b\u5f55<\/p>\n

PermitRootLogin yes\/no<\/p>\n

 <\/p>\n

#\u662f\u5426\u5141\u8bb8\u4e0d\u8f93\u5165\u5bc6\u7801\u767b\u5f55
\nPermitEmptyPasswords yes<\/p>\n

 <\/p>\n

#\u8bbe\u7f6e\u5141\u8bb8\u8fdc\u7a0b\u767b\u5f55\u7684\u7528\u6237<\/p>\n

AllowUsers\u00a0uesrname username1<\/p>\n

 <\/p>\n

[\u4fee\u6539\u6587\u4ef6\u6743\u9650\uff0c700\u8868\u793a\u4e3a\u7528\u6237\u8bbe\u7f6e\u8bfb\u3001\u5199\u3001\u6267\u884c\u7684\u6743\u9650\uff08\u5f00\u5934\u7684 7\uff09\uff0c\u800c\u4e0d\u7ed9\u7ec4\u548c\u5176\u4ed6\u7528\u6237\u7684\u6743\u9650\uff08\u540e\u9762\u7684\u4e24\u4e2a 0\uff09]\r\n$ chmod u+w \/etc\/sudoers\r\n$ vi \/etc\/sudoers\r\n$ chmod u-w \/etc\/sudoers\r\n\r\n\r\n\u4fdd\u5b58\u516c\u94a5\/\u79c1\u94a5\uff0c\u5728\u670d\u52a1\u5668\u4e0a\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\uff1a\r\n$ mkdir ~\/.ssh\r\n$ touch ~\/.ssh\/authorized_keys\r\n\r\n#\u6743\u9650\u8bbe\u7f6e(RHEL\/CENTOS\u7cfb\u7edf\u5fc5\u9700)\r\n$ chmod 700 ~\/.ssh\r\n$ chmod 600 ~\/.ssh\/authorized_keys\r\n\r\nssh-rsa TMiZRfW0cENRnGRgQPR1dCDv4GJwpcQi... ... username\r\n\r\n<\/pre>\n
 <\/p>\n
\u914d\u7f6e\u8bf4\u660e\uff1a<\/strong><\/p>\n
AcceptEnv<\/span><\/span><\/b><\/p>\n
\u00a0<\/span><\/span><\/span>\u53ea\u652f\u6301<\/span>SSHv2<\/span><\/span>\u534f\u8bae<\/span><\/p>\n
\u00a0<\/span><\/span><\/span>\u6307\u5b9a\u5ba2\u6237\u7aef\u53d1\u9001\u7684\u54ea\u4e9b\u73af\u5883\u53d8\u91cf\u5c06\u4f1a\u88ab\u4f20\u9012\u5230\u4f1a\u8bdd\u73af\u5883\u4e2d\u3002\u5177\u4f53\u7684\u7ec6\u8282\u53ef\u4ee5\u53c2\u8003<\/span>\u00a0<\/span>ssh_config<\/span><\/span>\uff08<\/span>5<\/span><\/span>\uff09<\/span>\u00a0<\/span><\/span>\u4e2d\u7684<\/span>\u00a0<\/span>SendEnv\u00a0<\/span><\/span><\/span>\u914d\u7f6e\u6307\u4ee4\u3002<\/span><\/p>\n
\u8be5\u5173\u5065\u5b57\u7684\u503c\u662f\u7a7a\u683c\u5206\u9694\u7684\u53d8\u91cf\u540d\u5217\u8868\uff08\u5176\u4e2d\u53ef\u4ee5\u4f7f\u7528\u2019<\/span>*'<\/span><\/span>\u548c\u2019<\/span>?'<\/span><\/span>\u4f5c\u4e3a\u901a\u914d\u7b26\uff09\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528\u591a\u4e2a<\/span>AcceptEnv<\/span><\/span>\u8fbe\u5230\u540c\u6837\u7684\u76ee\u7684\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u6709\u4e9b\u73af\u5883\u53d8\u91cf\u53ef\u80fd\u4f1a\u88ab\u7528\u4e8e\u7ed5\u8fc7\u7981\u6b62\u7528\u6237\u4f7f\u7528\u7684\u73af\u5883\u53d8\u91cf\u3002\u7531\u4e8e\u8fd9\u4e2a\u539f\u56e0\uff0c\u8be5\u6307\u4ee4\u5e94\u5f53\u5c0f\u5fc3\u4f7f\u7528\u9ed8\u8ba4\u503c\uff1a\u662f\u4e0d\u4f20\u9012\u4efb\u4f55\u73af\u5883\u53d8\u91cf<\/span><\/span><\/p>\n
\u00a0<\/span><\/span><\/b><\/p>\n
AddressFamily<\/span><\/b>\u00a0<\/span><\/span><\/span><\/p>\n
\u6307\u5b9a<\/span>sshd<\/span><\/span>\uff08<\/span>8<\/span><\/span>\uff09\u5e94\u5f53\u4f7f\u7528\u54ea\u79cd\u5730\u5740\u65cf\uff0c\u53d6\u503c\u8303\u56f4\uff1a\u201d<\/span>any<\/span><\/span>\u201d\uff08\u9ed8\u8ba4\uff09\u3001\u201d<\/span>inet<\/span><\/span>\u201d\uff08\u4ec5<\/span>IPv4<\/span><\/span>\uff09\u3001\u201d<\/span>inet6<\/span><\/span>\u2033\uff08\u4ec5<\/span>IPv6<\/span><\/span>\uff09<\/span><\/p>\n
\u00a0<\/span><\/span><\/span><\/p>\n
AllowGroups<\/span><\/b>\u00a0<\/span><\/span><\/span><\/p>\n
\u8fd9\u4e2a\u6307\u4ee4\u540e\u9762\u8ddf\u7740\u4e00\u4e32\u7528\u7a7a\u683c\u5206\u9694\u7684\u7ec4\u540d\u5217\u8868\uff08\u5176\u4e2d\u53ef\u4ee5\u4f7f\u7528\u201d<\/span>*<\/span><\/span>\u201d\u548c\u201d<\/span>?<\/span><\/span>\u201d\u901a\u914d\u7b26\uff09\uff0c\u9ed8\u8ba4\u5141\u8bb8\u6240\u6709\u7ec4\u767b\u5f55\u3002\u5982\u679c\u4f7f\u7528\u4e86\u8fd9\u4e2a\u6307\u4ee4\uff0c\u90a3\u4e48\u5c06\u4ec5\u5141\u8bb8\u8fd9\u4e9b\u7ec4\u4e2d\u7684\u6210\u5458\u767b\u5f55\uff0c\u800c\u62d2\u7edd\u5176\u5b83\u6240\u6709\u7ec4\u3002<\/span>\u8fd9\u91cc\u7684\u201d\u7ec4\u201d\u662f\u6307\u201d\u4e3b\u7ec4\u201d\uff08<\/span>primary group<\/span><\/span>\uff09\uff0c\u4e5f\u5c31\u662f<\/span>\/etc\/passwd<\/span><\/span>\u6587\u4ef6\u4e2d\u6307\u5b9a\u7684\u7ec4\u3002<\/span><\/p>\n
\u8fd9\u91cc\u53ea\u5141\u8bb8\u4f7f\u7528\u7ec4\u7684\u540d\u5b57\u800c\u4e0d\u5141\u8bb8\u4f7f\u7528<\/span>GID<\/span><\/span>\u3002\u76f8\u5173\u7684<\/span>\u00a0<\/span>allow\/deny\u00a0<\/span><\/span><\/span>\u6307\u4ee4\u6309\u7167\u4e0b\u5217\u987a\u5e8f\u5904\u7406\uff1a<\/span>DenyUsers --> AllowUsers --> DenyGroups-->AllowGroups<\/span><\/span><\/p>\n
\u00a0<\/span><\/span><\/span><\/p>\n
AllowTcpForwarding<\/span><\/span><\/b><\/p>\n
\u662f\u5426\u5141\u8bb8<\/span>TCP<\/span><\/span>\u8f6c\u53d1\uff0c\u9ed8\u8ba4\u503c\u4e3a\u201d<\/span>yes<\/span><\/span>\u201d\u3002<\/span><\/p>\n
\u7981\u6b62<\/span>TCP<\/span><\/span>\u8f6c\u53d1\u5e76\u4e0d\u80fd\u589e\u5f3a\u5b89\u5168\u6027\uff0c\u9664\u975e\u7981\u6b62\u4e86\u7528\u6237\u5bf9<\/span>shell<\/span><\/span>\u7684\u8bbf\u95ee\uff0c\u56e0\u4e3a\u7528\u6237\u53ef\u4ee5\u5b89\u88c5\u4ed6\u4eec\u81ea\u5df1\u7684\u8f6c\u53d1\u5668<\/span><\/p>\n
\u00a0<\/span><\/span><\/span><\/p>\n
AllowUsers<\/span><\/b>\u00a0<\/span><\/span><\/span><\/p>\n
\u8fd9\u4e2a\u6307\u4ee4\u540e\u9762\u8ddf\u7740\u4e00\u4e32\u7528\u7a7a\u683c\u5206\u9694\u7684\u7528\u6237\u540d\u5217\u8868\uff08\u5176\u4e2d\u53ef\u4ee5\u4f7f\u7528\u201d<\/span>*<\/span><\/span>\u201d\u548c\u201d<\/span>?<\/span><\/span>\u201d\u901a\u914d\u7b26\uff09\u3002\u9ed8\u8ba4\u5141\u8bb8\u6240\u6709\u7528\u6237\u767b\u5f55\u3002<\/span><\/p>\n
\u5982\u679c\u4f7f\u7528\u4e86\u8fd9\u4e2a\u6307\u4ee4\uff0c\u90a3\u4e48\u5c06\u4ec5\u5141\u8bb8\u8fd9\u4e9b\u7528\u6237\u767b\u5f55\uff0c\u800c\u62d2\u7edd\u5176\u5b83\u6240\u6709\u7528\u6237\u3002<\/span><\/p>\n
\u5982\u679c\u6307\u5b9a\u4e86<\/span>\u00a0<\/span>USER@HOST\u00a0<\/span><\/span><\/span>\u6a21\u5f0f\u7684\u7528\u6237\uff0c\u90a3\u4e48<\/span>\u00a0<\/span>USER\u00a0<\/span><\/span><\/span>\u548c<\/span>\u00a0<\/span>HOST\u00a0<\/span><\/span><\/span>\u5c06\u540c\u65f6\u88ab\u68c0\u67e5\u3002<\/span><\/p>\n
\u8fd9\u91cc\u53ea\u5141\u8bb8\u4f7f\u7528\u7528\u6237\u7684\u540d\u5b57\u800c\u4e0d\u5141\u8bb8\u4f7f\u7528<\/span>UID<\/span><\/span>\u3002\u76f8\u5173\u7684<\/span>\u00a0<\/span>allow\/deny\u00a0<\/span><\/span><\/span>\u6307\u4ee4\u6309\u7167\u4e0b\u5217\u987a\u5e8f\u5904\u7406\uff1a<\/span><\/p>\n
DenyUsers -->AllowUsers-->DenyGroups --> AllowGroups<\/span><\/span><\/p>\n
\u00a0<\/span><\/span><\/span><\/p>\n
AuthorizedKeysFile<\/span><\/b><\/span><\/p>\n
\u5b58\u653e\u8be5\u7528\u6237\u53ef\u4ee5\u7528\u6765\u767b\u5f55\u7684<\/span>\u00a0<\/span>RSA\/DSA\u00a0<\/span><\/span><\/span>\u516c\u94a5\u3002<\/span><\/p>\n
\u8be5\u6307\u4ee4\u4e2d\u53ef\u4ee5\u4f7f\u7528\u4e0b\u5217\u6839\u636e\u8fde\u63a5\u65f6\u7684\u5b9e\u9645\u60c5\u51b5\u8fdb\u884c\u5c55\u5f00\u7684\u7b26\u53f7\uff1a<\/span>%%\u00a0<\/span><\/span><\/span>\u8868\u793a\u2019<\/span>%'<\/span><\/span>\u3001<\/span>%h\u00a0<\/span><\/span><\/span>\u8868\u793a\u7528\u6237\u7684\u4e3b\u76ee\u5f55\u3001<\/span>%u\u00a0<\/span><\/span><\/span>\u8868\u793a\u8be5\u7528\u6237\u7684\u7528\u6237\u540d\u3002\u7ecf\u8fc7\u6269\u5c55\u4e4b\u540e\u7684\u503c\u5fc5\u987b\u8981\u4e48\u662f\u7edd\u5bf9\u8def\u5f84\uff0c\u8981\u4e48\u662f\u76f8\u5bf9\u4e8e\u7528\u6237\u4e3b\u76ee\u5f55\u7684\u76f8\u5bf9\u8def\u5f84\u3002\u9ed8\u8ba4\u503c\u662f\u201d<\/span>.ssh\/authorized_keys<\/span><\/span>\u201d<\/span><\/p>\n
\u00a0<\/span><\/span><\/span><\/p>\n
Banner<\/span><\/span><\/b><\/p>\n
\u00a0<\/span><\/span><\/span>\u53ea\u652f\u6301<\/span>SSHv2<\/span><\/span>\u534f\u8bae<\/span><\/p>\n
\u00a0<\/span><\/span><\/span>\u5c06\u8fd9\u4e2a\u6307\u4ee4\u6307\u5b9a\u7684\u6587\u4ef6\u4e2d\u7684\u5185\u5bb9\u5728\u7528\u6237\u8fdb\u884c\u8ba4\u8bc1\u524d\u663e\u793a\u7ed9\u8fdc\u7a0b\u7528\u6237<\/span>\u3002\u9ed8\u8ba4\u4ec0\u4e48\u5185\u5bb9\u4e5f\u4e0d\u663e\u793a\u3002\u201d<\/span>none<\/span><\/span>\u201d\u8868\u793a\u7981\u7528\u8fd9\u4e2a\u7279\u6027<\/span><\/p>\n
ChallengeResponseAuthentication<\/span><\/b>\u00a0<\/span><\/span><\/span><\/p>\n
\u00a0<\/span><\/span><\/span>\u662f\u5426\u5141\u8bb8\u8d28\u7591<\/span>-<\/span><\/span>\u5e94\u7b54\uff08<\/span>challenge-response<\/span><\/span>\uff09\u8ba4\u8bc1\u3002\u9ed8\u8ba4\u503c\u662f\u201d<\/span>yes<\/span><\/span>\u201d\u3002\u6240\u6709<\/span>login.conf<\/span><\/span>\uff08<\/span>5<\/span><\/span>\uff09<\/span>\u00a0<\/span><\/span>\u4e2d\u5141\u8bb8\u7684\u8ba4\u8bc1\u65b9\u5f0f\u90fd\u88ab\u652f\u6301<\/span><\/p>\n
\u00a0<\/span><\/span><\/span><\/p>\n
Ciphers<\/span><\/span><\/b><\/p>\n
\u00a0<\/span><\/span><\/span>\u53ea\u652f\u6301<\/span>SSHv2<\/span><\/span>\u534f\u8bae<\/span><\/p>\n
\u00a0<\/span><\/span><\/span>\u6307\u5b9a<\/span>SSH-2<\/span><\/span>\u5141\u8bb8\u4f7f\u7528\u7684\u52a0\u5bc6\u7b97\u6cd5\u3002\u591a\u4e2a\u7b97\u6cd5\u4e4b\u95f4\u4f7f\u7528\u9017\u53f7\u5206\u9694\u3002\u53ef\u4ee5\u4f7f\u7528\u7684\u7b97\u6cd5\u5982\u4e0b\uff1a<\/span><\/p>\n
\u201c<\/span>aes128-cbc<\/span><\/span>\u201d\uff0c<\/span>\u00a0<\/span><\/span>\u201c<\/span>aes192-cbc<\/span><\/span>\u201d\uff0c<\/span>\u00a0<\/span><\/span>\u201c<\/span>aes256-cbc<\/span><\/span>\u201d\uff0c<\/span>\u00a0<\/span><\/span>\u201c<\/span>aes128-ctr<\/span><\/span>\u201d\uff0c<\/span>\u00a0<\/span><\/span>\u201c<\/span>aes192-ctr<\/span><\/span>\u201d\uff0c<\/span>\u00a0<\/span><\/span>\u201c<\/span>aes256-ctr<\/span><\/span>\u201d\uff0c<\/span>\u00a0<\/span><\/span>\u201c<\/span>3des-cbc<\/span><\/span>\u201d\uff0c<\/span>\u00a0<\/span><\/span>\u201c<\/span>arcfour128<\/span><\/span>\u2033\uff0c<\/span>\u201c<\/span>arcfour256<\/span><\/span>\u2033\uff0c<\/span>\u00a0<\/span><\/span>\u201c<\/span>arcfour<\/span><\/span>\u201d\uff0c<\/span>\u00a0<\/span><\/span>\u201c<\/span>blowfish-cbc<\/span><\/span>\u201d\uff0c<\/span>\u00a0<\/span><\/span>\u201c<\/span>cast128-cbc<\/span><\/span>\u201d<\/span><\/p>\n
\u9ed8\u8ba4\u503c\u662f\u53ef\u4ee5\u4f7f\u7528\u4e0a\u8ff0\u6240\u6709\u7b97\u6cd5<\/span><\/p>\n
\u00a0<\/span><\/span><\/span><\/p>\n
ClientAliveCountMax<\/span><\/span><\/b><\/p>\n
\u00a0<\/span><\/span><\/span>\u53ea\u652f\u6301<\/span>SSHv2<\/span><\/span>\u534f\u8bae<\/span><\/p>\n
\u00a0<\/span>Sshd<\/span><\/span>\uff08<\/span>8<\/span><\/span>\uff09\u5728\u672a\u6536\u5230\u4efb\u4f55\u5ba2\u6237\u7aef\u56de\u5e94\u524d\u6700\u591a\u5141\u8bb8\u53d1\u9001\u591a\u5c11\u4e2a\u201d<\/span>alive<\/span><\/span>\u201d\u6d88\u606f\u3002\u9ed8\u8ba4\u503c\u662f<\/span>\u00a0<\/span>3\u00a0<\/span><\/span><\/span>\u3002<\/span><\/p>\n
\u5230\u8fbe\u8fd9\u4e2a\u4e0a\u9650\u540e\uff0c<\/span>sshd<\/span><\/span>\uff08<\/span>8<\/span><\/span>\uff09<\/span>\u00a0<\/span><\/span>\u5c06\u5f3a\u5236\u65ad\u5f00\u8fde\u63a5\u3001\u5173\u95ed\u4f1a\u8bdd\u3002<\/span><\/p>\n
\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u201d<\/span>alive<\/span><\/span>\u201d\u6d88\u606f\u4e0e<\/span>\u00a0<\/span>TCPKeepAlive\u00a0<\/span><\/span><\/span>\u6709\u5f88\u5927\u5dee\u5f02\u3002<\/span><\/p>\n
\u201c<\/span>alive<\/span><\/span>\u201d\u6d88\u606f\u662f\u901a\u8fc7\u52a0\u5bc6\u8fde\u63a5\u53d1\u9001\u7684\uff0c\u56e0\u6b64\u4e0d\u4f1a\u88ab\u6b3a\u9a97\uff1b\u800c<\/span>\u00a0<\/span>TCPKeepAlive\u00a0<\/span><\/span><\/span>\u5374\u662f\u53ef\u4ee5\u88ab\u6b3a\u9a97\u7684\u3002<\/span><\/p>\n
\u5982\u679c<\/span>ClientAliveInterval<\/span><\/span>\u88ab\u8bbe\u4e3a<\/span>15\u00a0<\/span><\/span><\/span>\u5e76\u4e14\u5c06<\/span>\u00a0<\/span>ClientAliveCountMax\u00a0<\/span><\/span><\/span>\u4fdd\u6301\u4e3a\u9ed8\u8ba4\u503c\uff0c\u90a3\u4e48\u65e0\u5e94\u7b54\u7684\u5ba2\u6237\u7aef\u5927\u7ea6\u4f1a\u5728<\/span>45<\/span><\/span>\u79d2\u540e\u88ab\u5f3a\u5236\u65ad\u5f00<\/span><\/p>\n
\u00a0<\/span><\/span><\/span><\/p>\n
ClientAliveInterval<\/span><\/span><\/b><\/p>\n
\u00a0<\/span><\/span><\/span>\u53ea\u652f\u6301<\/span>SSHv2<\/span><\/span>\u534f\u8bae<\/span><\/p>\n
\u00a0<\/span><\/span><\/span>\u8bbe\u7f6e\u4e00\u4e2a\u4ee5\u79d2\u8bb0\u7684\u65f6\u957f\uff0c\u5982\u679c\u8d85\u8fc7\u8fd9\u4e48\u957f\u65f6\u95f4\u6ca1\u6709\u6536\u5230\u5ba2\u6237\u7aef\u7684\u4efb\u4f55\u6570\u636e\uff0c<\/span>sshd<\/span><\/span>\uff08<\/span>8<\/span><\/span>\uff09<\/span>\u00a0<\/span><\/span>\u5c06\u901a\u8fc7\u5b89\u5168\u901a\u9053\u5411\u5ba2\u6237\u7aef\u53d1\u9001\u4e00\u4e2a\u201d<\/span>alive<\/span><\/span>\u201d\u6d88\u606f\uff0c\u5e76\u7b49\u5019\u5e94\u7b54\u3002\u9ed8\u8ba4\u503c<\/span>\u00a0<\/span>0\u00a0<\/span><\/span><\/span>\u8868\u793a\u4e0d\u53d1\u9001\u201d<\/span>alive<\/span><\/span>\u201d\u6d88\u606f<\/span><\/p>\n
\u00a0<\/span><\/span><\/b><\/p>\n
Compression<\/span><\/span><\/b><\/p>\n
\u00a0<\/span><\/span>\u662f\u5426\u5bf9\u901a\u4fe1\u6570\u636e\u8fdb\u884c\u52a0\u5bc6\uff0c\u8fd8\u662f\u5ef6\u8fdf\u5230\u8ba4\u8bc1\u6210\u529f\u4e4b\u540e\u518d\u5bf9\u901a\u4fe1\u6570\u636e\u52a0\u5bc6\u3002\u53ef\u7528\u503c\uff1a<\/span>\u201dyes\u201d<\/span><\/span>\uff0c<\/span>\u00a0<\/span>\u201cdelayed\u201d<\/span><\/span>\uff08\u9ed8\u8ba4\uff09\uff0c<\/span>\u00a0<\/span>\u201cno\u201d<\/span><\/span><\/p>\n
\u00a0<\/span><\/span><\/b><\/p>\n
DenyGroups<\/span><\/span><\/b><\/p>\n
\u00a0<\/span><\/span>\u8fd9\u4e2a\u6307\u4ee4\u540e\u9762\u8ddf\u7740\u4e00\u4e32\u7528\u7a7a\u683c\u5206\u9694\u7684\u7ec4\u540d\u5217\u8868\uff08\u5176\u4e2d\u53ef\u4ee5\u4f7f\u7528<\/span>\u201d*\u201d<\/span><\/span>\u548c<\/span>\u201d?\u201d<\/span><\/span>\u901a\u914d\u7b26\uff09\u3002\u9ed8\u8ba4\u5141\u8bb8\u6240\u6709\u7ec4\u767b\u5f55\u3002<\/span><\/p>\n
\u5982\u679c\u4f7f\u7528\u4e86\u8fd9\u4e2a\u6307\u4ee4\uff0c\u90a3\u4e48\u8fd9\u4e9b\u7ec4\u4e2d\u7684\u6210\u5458\u5c06\u88ab\u62d2\u7edd\u767b\u5f55\u3002<\/span><\/p>\n
\u8fd9\u91cc\u7684<\/span>\u201d<\/span><\/span>\u7ec4<\/span>\u201d<\/span><\/span>\u662f\u6307<\/span>\u201d<\/span><\/span>\u4e3b\u7ec4<\/span>\u201d<\/span><\/span>\uff08<\/span>primary group<\/span><\/span>\uff09\uff0c\u4e5f\u5c31\u662f<\/span>\/etc\/passwd<\/span><\/span>\u6587\u4ef6\u4e2d\u6307\u5b9a\u7684\u7ec4\u3002<\/span><\/p>\n
\u8fd9\u91cc\u53ea\u5141\u8bb8\u4f7f\u7528\u7ec4\u7684\u540d\u5b57\u800c\u4e0d\u5141\u8bb8\u4f7f\u7528<\/span>GID<\/span><\/span>\u3002\u76f8\u5173\u7684<\/span>\u00a0<\/span>allow\/deny\u00a0<\/span><\/span><\/span>\u6307\u4ee4\u6309\u7167\u4e0b\u5217\u987a\u5e8f\u5904\u7406\uff1a<\/span>DenyUsers -> AllowUsers -> DenyGroups -> AllowGroups<\/span><\/span><\/p>\n
\u00a0<\/span><\/span><\/b><\/p>\n
DenyUsers<\/span><\/span><\/b><\/p>\n
\u00a0<\/span><\/span>\u8fd9\u4e2a\u6307\u4ee4\u540e\u9762\u8ddf\u7740\u4e00\u4e32\u7528\u7a7a\u683c\u5206\u9694\u7684\u7528\u6237\u540d\u5217\u8868\uff08\u5176\u4e2d\u53ef\u4ee5\u4f7f\u7528<\/span>\u201d*\u201d<\/span><\/span>\u548c<\/span>\u201d?\u201d<\/span><\/span>\u901a\u914d\u7b26\uff09\u3002\u9ed8\u8ba4\u5141\u8bb8\u6240\u6709\u7528\u6237\u767b\u5f55\u3002<\/span><\/p>\n
\u5982\u679c\u4f7f\u7528\u4e86\u8fd9\u4e2a\u6307\u4ee4\uff0c\u90a3\u4e48\u8fd9\u4e9b\u7528\u6237\u5c06\u88ab\u62d2\u7edd\u767b\u5f55\u3002<\/span><\/p>\n
\u5982\u679c\u6307\u5b9a\u4e86<\/span>\u00a0<\/span>USER@HOST\u00a0<\/span><\/span><\/span>\u6a21\u5f0f\u7684\u7528\u6237\uff0c\u90a3\u4e48<\/span>\u00a0<\/span>USER\u00a0<\/span><\/span><\/span>\u548c<\/span>\u00a0<\/span>HOST\u00a0<\/span><\/span><\/span>\u5c06\u540c\u65f6\u88ab\u68c0\u67e5\u3002<\/span><\/p>\n
\u8fd9\u91cc\u53ea\u5141\u8bb8\u4f7f\u7528\u7528\u6237\u7684\u540d\u5b57\u800c\u4e0d\u5141\u8bb8\u4f7f\u7528<\/span>UID<\/span><\/span>\u3002\u76f8\u5173\u7684<\/span>\u00a0<\/span>allow\/deny\u00a0<\/span><\/span><\/span>\u6307\u4ee4\u6309\u7167\u4e0b\u5217\u987a\u5e8f\u5904\u7406\uff1a<\/span><\/p>\n
DenyUsers -> AllowUsers -> DenyGroups -> AllowGroups<\/span><\/span><\/p>\n
\u00a0<\/span><\/span><\/b><\/p>\n
ForceCommand\u00a0<\/span><\/span><\/b><\/p>\n
\u5f3a\u5236\u6267\u884c\u8fd9\u91cc\u6307\u5b9a\u7684\u547d\u4ee4\u800c\u5ffd\u7565\u5ba2\u6237\u7aef\u63d0\u4f9b\u7684\u4efb\u4f55\u547d\u4ee4\u3002\u8fd9\u4e2a\u547d\u4ee4\u5c06\u4f7f\u7528\u7528\u6237\u7684\u767b\u5f55<\/span>shell<\/span><\/span>\u6267\u884c\uff08<\/span>shell -c<\/span><\/span>\uff09\u3002<\/span><\/p>\n
\u8fd9\u53ef\u4ee5\u5e94\u7528\u4e8e<\/span>\u00a0<\/span>shell\u00a0<\/span><\/span><\/span>\u3001\u547d\u4ee4\u3001\u5b50\u7cfb\u7edf\u7684\u5b8c\u6210\uff0c\u901a\u5e38\u7528\u4e8e<\/span>\u00a0<\/span>Match\u00a0<\/span><\/span><\/span>\u5757\u4e2d\u3002<\/span><\/p>\n
\u8fd9\u4e2a\u547d\u4ee4\u6700\u521d\u662f\u5728\u5ba2\u6237\u7aef\u901a\u8fc7<\/span>\u00a0<\/span>SSH_ORIGINAL_COMMAND\u00a0<\/span><\/span><\/span>\u73af\u5883\u53d8\u91cf\u6765\u652f\u6301\u7684<\/span><\/p>\n
\u00a0<\/span><\/span><\/b><\/p>\n
GatewayPorts<\/span><\/span><\/b><\/p>\n
\u00a0<\/span><\/span>\u662f\u5426\u5141\u8bb8\u8fdc\u7a0b\u4e3b\u673a\u8fde\u63a5\u672c\u5730\u7684\u8f6c\u53d1\u7aef\u53e3\u3002\u9ed8\u8ba4\u503c\u662f<\/span>\u201dno\u201d<\/span><\/span>\u3002<\/span><\/p>\n
sshd<\/span><\/span>\uff08<\/span>8<\/span><\/span>\uff09<\/span>\u00a0<\/span><\/span>\u9ed8\u8ba4\u5c06\u8fdc\u7a0b\u7aef\u53e3\u8f6c\u53d1\u7ed1\u5b9a\u5230<\/span>loopback<\/span><\/span>\u5730\u5740\u3002\u8fd9\u6837\u5c06\u963b\u6b62\u5176\u5b83\u8fdc\u7a0b\u4e3b\u673a\u8fde\u63a5\u5230\u8f6c\u53d1\u7aef\u53e3\u3002<\/span><\/p>\n
GatewayPorts\u00a0<\/span><\/span><\/span>\u6307\u4ee4\u53ef\u4ee5\u8ba9<\/span>\u00a0<\/span>sshd\u00a0<\/span><\/span><\/span>\u5c06\u8fdc\u7a0b\u7aef\u53e3\u8f6c\u53d1\u7ed1\u5b9a\u5230\u975e<\/span>loopback<\/span><\/span>\u5730\u5740\uff0c\u8fd9\u6837\u5c31\u53ef\u4ee5\u5141\u8bb8\u8fdc\u7a0b\u4e3b\u673a\u8fde\u63a5\u4e86\u3002<\/span><\/p>\n
\u201cno\u201d<\/span><\/span>\u8868\u793a\u4ec5\u5141\u8bb8\u672c\u5730\u8fde\u63a5\uff0c<\/span>\u201dyes\u201d<\/span><\/span>\u8868\u793a\u5f3a\u5236\u5c06\u8fdc\u7a0b\u7aef\u53e3\u8f6c\u53d1\u7ed1\u5b9a\u5230\u7edf\u914d\u5730\u5740\uff08<\/span>wildcard address<\/span><\/span>\uff09\uff0c<\/span><\/p>\n
\u201cclientspecified\u201d<\/span><\/span>\u8868\u793a\u5141\u8bb8\u5ba2\u6237\u7aef\u9009\u62e9\u5c06\u8fdc\u7a0b\u7aef\u53e3\u8f6c\u53d1\u7ed1\u5b9a\u5230\u54ea\u4e2a\u5730\u5740<\/span><\/p>\n
\u00a0<\/span><\/span><\/b><\/p>\n
GSSAPIAuthentication<\/span><\/span><\/b><\/p>\n
\u53ea\u652f\u6301<\/span>SSHv2<\/span><\/span>\u534f\u8bae<\/span><\/p>\n
\u662f\u5426\u5141\u8bb8\u4f7f\u7528\u57fa\u4e8e<\/span>\u00a0<\/span>GSSAPI\u00a0<\/span><\/span><\/span>\u7684\u7528\u6237\u8ba4\u8bc1\u3002\u9ed8\u8ba4\u503c\u4e3a<\/span>\u201dno\u201d<\/span><\/span><\/p>\n
\u00a0<\/span><\/span><\/b><\/p>\n
GSSAPICleanupCredentials<\/span><\/span><\/b><\/p>\n
\u53ea\u652f\u6301<\/span>SSHv2<\/span><\/span>\u534f\u8bae<\/span><\/p>\n
\u662f\u5426\u5728\u7528\u6237\u9000\u51fa\u767b\u5f55\u540e\u81ea\u52a8\u9500\u6bc1\u7528\u6237\u51ed\u8bc1\u7f13\u5b58\u3002\u9ed8\u8ba4\u503c\u662f<\/span>\u201dyes\u201d<\/span><\/span><\/p>\n
\u00a0<\/span><\/span><\/b><\/p>\n
HostbasedAuthentication<\/span><\/span><\/b><\/p>\n
\u53ea\u652f\u6301<\/span>SSHv2<\/span><\/span>\u534f\u8bae<\/span><\/p>\n
\u8fd9\u4e2a\u6307\u4ee4\u4e0e<\/span>\u00a0<\/span>RhostsRSAAuthentication\u00a0<\/span><\/span><\/span>\u7c7b\u4f3c\uff0c\u63a8\u8350\u4f7f\u7528\u9ed8\u8ba4\u503c<\/span>\u201dno\u201d<\/span><\/span>\u4e0d\u7981\u6b62\u8fd9\u79cd\u4e0d\u5b89\u5168\u7684\u8ba4\u8bc1\u65b9\u5f0f<\/span><\/p>\n
\u00a0<\/span><\/span><\/b><\/p>\n
HostbasedUsesNameFromPacketOnly<\/span><\/span><\/b><\/p>\n
\u00a0<\/span><\/span>\u5728\u5f00\u542f<\/span>\u00a0<\/span>HostbasedAuthentication\u00a0<\/span><\/span><\/span>\u7684\u60c5\u51b5\u4e0b\uff0c<\/span><\/p>\n
\u6307\u5b9a\u670d\u52a1\u5668\u5728\u4f7f\u7528<\/span>\u00a0<\/span>~\/.shosts ~\/.rhosts \/etc\/hosts.equiv\u00a0<\/span><\/span><\/span>\u8fdb\u884c\u8fdc\u7a0b\u4e3b\u673a\u540d\u5339\u914d\u65f6\uff0c\u662f\u5426\u8fdb\u884c\u53cd\u5411\u57df\u540d\u67e5\u8be2\u3002<\/span><\/p>\n
\u201cyes\u201d<\/span><\/span>\u8868\u793a<\/span>\u00a0<\/span>sshd<\/span><\/span>\uff08<\/span>8<\/span><\/span>\uff09<\/span>\u00a0<\/span><\/span>\u4fe1\u4efb\u5ba2\u6237\u7aef\u63d0\u4f9b\u7684\u4e3b\u673a\u540d\u800c\u4e0d\u8fdb\u884c\u53cd\u5411\u67e5\u8be2\u3002\u9ed8\u8ba4\u503c\u662f<\/span>\u201dno\u201d<\/span><\/span><\/p>\n
\u00a0<\/span><\/span><\/b><\/p>\n
HostKey<\/span><\/span><\/b><\/p>\n
\u00a0<\/span><\/span>\u4e3b\u673a\u79c1\u94a5\u6587\u4ef6\u7684\u4f4d\u7f6e\u3002\u5982\u679c\u6743\u9650\u4e0d\u5bf9\uff0c<\/span>sshd<\/span><\/span>\uff08<\/span>8<\/span><\/span>\uff09<\/span>\u00a0<\/span><\/span>\u53ef\u80fd\u4f1a\u62d2\u7edd\u542f\u52a8\u3002<\/span><\/p>\n
SSHv1<\/span><\/span>\u9ed8\u8ba4\u662f\uff1a<\/span>\u00a0<\/span>\/etc\/ssh\/ssh_host_key\u00a0<\/span><\/span><\/span>\u3002<\/span><\/p>\n
SSHv2<\/span><\/span>\u9ed8\u8ba4\u662f\uff1a<\/span>\/etc\/ssh\/ssh_host_rsa_key\u00a0<\/span><\/span><\/span>\u548c<\/span>\u00a0<\/span>\/etc\/ssh\/ssh_host_dsa_key\u00a0<\/span><\/span><\/span>\u3002\u4e00\u53f0\u4e3b\u673a\u53ef\u4ee5\u62e5\u6709\u591a\u4e2a\u4e0d\u540c\u7684\u79c1\u94a5\u3002<\/span>\u201drsa1\u2033<\/span><\/span>\u4ec5\u7528\u4e8e<\/span>SSH-1<\/span><\/span>\uff0c<\/span>\u201ddsa\u201d<\/span><\/span>\u548c<\/span>\u201drsa\u201d<\/span><\/span>\u4ec5\u7528\u4e8e<\/span>SSH-2<\/span><\/span><\/p>\n
\u00a0<\/span><\/span><\/b><\/p>\n
IgnoreRhosts<\/span><\/span><\/b><\/p>\n
\u00a0<\/span><\/span>\u662f\u5426\u5728<\/span>\u00a0<\/span>RhostsRSAAuthentication\u00a0<\/span><\/span><\/span>\u6216<\/span>\u00a0<\/span>HostbasedAuthentication\u00a0<\/span><\/span><\/span>\u8fc7\u7a0b\u4e2d\u5ffd\u7565<\/span>\u00a0<\/span>.rhosts\u00a0<\/span><\/span><\/span>\u548c<\/span>\u00a0<\/span>.shosts\u00a0<\/span><\/span><\/span>\u6587\u4ef6\u3002\u4e0d\u8fc7<\/span>\u00a0<\/span>\/etc\/hosts.equiv\u00a0<\/span><\/span><\/span>\u548c<\/span>\u00a0<\/span>\/etc\/shosts.equiv\u00a0<\/span><\/span><\/span>\u4ecd\u5c06\u88ab\u4f7f\u7528\u3002\u63a8\u8350\u8bbe\u4e3a\u9ed8\u8ba4\u503c<\/span>\u201dyes\u201d<\/span><\/span><\/p>\n
\u00a0<\/span><\/span><\/b><\/p>\n
IgnoreUserKnownHosts<\/span><\/span><\/b><\/p>\n
\u00a0<\/span><\/span>\u662f\u5426\u5728<\/span>\u00a0<\/span>RhostsRSAAuthentication\u00a0<\/span><\/span><\/span>\u6216<\/span>\u00a0<\/span>HostbasedAuthentication\u00a0<\/span><\/span><\/span>\u8fc7\u7a0b\u4e2d\u5ffd\u7565\u7528\u6237\u7684<\/span>\u00a0<\/span>~\/.ssh\/known_hosts\u00a0<\/span><\/span><\/span>\u6587\u4ef6\u3002\u9ed8\u8ba4\u503c\u662f<\/span>\u201dno\u201d<\/span><\/span>\u3002\u4e3a\u4e86\u63d0\u9ad8\u5b89\u5168\u6027\uff0c\u53ef\u4ee5\u8bbe\u4e3a<\/span>\u201dyes\u201d<\/span><\/span><\/p>\n
\u00a0<\/span><\/span><\/b><\/p>\n
KerberosAuthentication<\/span><\/span><\/b><\/p>\n
\u00a0<\/span><\/span>\u662f\u5426\u8981\u6c42\u7528\u6237\u4e3a<\/span>\u00a0<\/span>PasswordAuthentication\u00a0<\/span><\/span><\/span>\u63d0\u4f9b\u7684\u5bc6\u7801\u5fc5\u987b\u901a\u8fc7<\/span>\u00a0<\/span>Kerberos KDC\u00a0<\/span><\/span><\/span>\u8ba4\u8bc1\uff0c\u4e5f\u5c31\u662f\u662f\u5426\u4f7f\u7528<\/span>Kerberos<\/span><\/span>\u8ba4\u8bc1\u3002\u8981\u4f7f\u7528<\/span>Kerberos<\/span><\/span>\u8ba4\u8bc1\uff0c\u670d\u52a1\u5668\u9700\u8981\u4e00\u4e2a\u53ef\u4ee5\u6821\u9a8c<\/span>\u00a0<\/span>KDC identity\u00a0<\/span><\/span><\/span>\u7684<\/span>\u00a0<\/span>Kerberos servtab\u00a0<\/span><\/span><\/span>\u3002\u9ed8\u8ba4\u503c\u662f<\/span>\u201dno\u201d<\/span><\/span><\/p>\n
\u00a0<\/span><\/span><\/b><\/p>\n
KerberosGetAFSToken<\/span><\/span><\/b><\/p>\n
\u00a0<\/span><\/span>\u5982\u679c\u4f7f\u7528\u4e86<\/span>\u00a0<\/span>AFS\u00a0<\/span><\/span><\/span>\u5e76\u4e14\u8be5\u7528\u6237\u6709\u4e00\u4e2a<\/span>\u00a0<\/span>Kerberos 5 TGT<\/span><\/span>\uff0c\u90a3\u4e48\u5f00\u542f\u8be5\u6307\u4ee4\u540e\uff0c\u5c06\u4f1a\u5728\u8bbf\u95ee\u7528\u6237\u7684\u5bb6\u76ee\u5f55\u524d\u5c1d\u8bd5\u83b7\u53d6\u4e00\u4e2a<\/span>\u00a0<\/span>AFS token\u00a0<\/span><\/span><\/span>\u3002\u9ed8\u8ba4\u4e3a<\/span>\u201dno\u201d<\/span><\/span><\/p>\n
\u00a0<\/span><\/span><\/b><\/p>\n
KerberosOrLocalPasswd<\/span><\/span><\/b><\/p>\n
\u00a0<\/span><\/span>\u5982\u679c<\/span>\u00a0<\/span>Kerberos\u00a0<\/span><\/span><\/span>\u5bc6\u7801\u8ba4\u8bc1\u5931\u8d25\uff0c\u90a3\u4e48\u8be5\u5bc6\u7801\u8fd8\u5c06\u8981\u901a\u8fc7\u5176\u5b83\u7684\u8ba4\u8bc1\u673a\u5236\uff08\u6bd4\u5982<\/span>\u00a0<\/span>\/etc\/passwd<\/span><\/span>\uff09\u3002\u9ed8\u8ba4\u503c\u4e3a<\/span>\u201dyes\u201d<\/span><\/span><\/p>\n
\u00a0<\/span><\/span><\/b><\/p>\n
KerberosTicketCleanup<\/span><\/span><\/b><\/p>\n
\u00a0<\/span><\/span>\u662f\u5426\u5728\u7528\u6237\u9000\u51fa\u767b\u5f55\u540e\u81ea\u52a8\u9500\u6bc1\u7528\u6237\u7684<\/span>\u00a0<\/span>ticket\u00a0<\/span><\/span><\/span>\u3002\u9ed8\u8ba4\u503c\u662f<\/span>\u201dyes\u201d<\/span><\/span><\/p>\n
\u00a0<\/span><\/span><\/p>\n
KeyRegenerationInterval<\/span><\/span><\/b><\/p>\n
\u53ea\u652f\u6301<\/span>SSHv1<\/span><\/span>\u534f\u8bae<\/span><\/p>\n
\u5728<\/span>SSH-1<\/span><\/span>\u534f\u8bae\u4e0b\uff0c\u77ed\u547d\u7684\u670d\u52a1\u5668\u5bc6\u94a5\u5c06\u4ee5\u6b64\u6307\u4ee4\u8bbe\u7f6e\u7684\u65f6\u95f4\u4e3a\u5468\u671f\uff08\u79d2\uff09\uff0c\u4e0d\u65ad\u91cd\u65b0\u751f\u6210\u3002<\/span><\/p>\n
\u8fd9\u4e2a\u673a\u5236\u53ef\u4ee5\u5c3d\u91cf\u51cf\u5c0f\u5bc6\u94a5\u4e22\u5931\u6216\u8005\u9ed1\u5ba2\u653b\u51fb\u9020\u6210\u7684\u635f\u5931\u3002<\/span><\/p>\n
\u8bbe\u4e3a<\/span>\u00a0<\/span>0\u00a0<\/span><\/span><\/span>\u8868\u793a\u6c38\u4e0d\u91cd\u65b0\u751f\u6210\uff0c\u9ed8\u8ba4\u4e3a<\/span>\u00a0<\/span>3600<\/span><\/span>\uff08\u79d2\uff09<\/span><\/p>\n
 <\/p>\n
 <\/p>\n","protected":false},"excerpt":{"rendered":"
#\u6dfb\u52a0\u7528\u6237<\/p>\n
useradd uesrname<\/p>\n
#\u8bbe\u7f6e\u7528\u6237\u5bc6\u7801<\/p>\n
passwd username<\/p>\n
 <\/p>\n
\u5141\u8bb8\/\u7981\u6b62root\u767b\u5f55
\nvi \/etc\/ssh\/sshd_config<\/p>\n
#\u662f\u5426\u5141\u8bb8root\u767b\u5f55<\/p>\n
PermitRootLogin yes\/no<\/p>\n
 <\/p>\n
#\u662f\u5426\u5141\u8bb8\u4e0d\u8f93\u5165\u5bc6\u7801\u767b\u5f55
\nPermitEmptyPasswords yes<\/p>\n
 <\/p>\n
#\u8bbe\u7f6e\u5141\u8bb8\u8fdc\u7a0b\u767b\u5f55\u7684\u7528\u6237<\/p>\n
AllowUsers uesrname username1<\/p>\n
 <\/p>\n
\u914d\u7f6e\u8bf4\u660e\uff1a<\/strong><\/p>\n
AcceptEnv<\/span><\/span><\/b><\/p>\n
 <\/span><\/span><\/span>\u53ea\u652f\u6301<\/span>SSHv2<\/span><\/span>\u534f\u8bae<\/span><\/p>\n
 <\/span><\/span><\/span>\u6307\u5b9a\u5ba2\u6237\u7aef\u53d1\u9001\u7684\u54ea\u4e9b\u73af\u5883\u53d8\u91cf\u5c06\u4f1a\u88ab\u4f20\u9012\u5230\u4f1a\u8bdd\u73af\u5883\u4e2d\u3002\u5177\u4f53\u7684\u7ec6\u8282\u53ef\u4ee5\u53c2\u8003<\/span> <\/span>ssh...<\/span><\/span><\/p>\n
 \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":{"footnotes":""},"categories":[287],"tags":[139],"class_list":["post-402","post","type-post","status-publish","format-standard","hentry","category-linux","tag-ssh"],"_links":{"self":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/posts\/402","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/comments?post=402"}],"version-history":[{"count":0,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/posts\/402\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/media?parent=402"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/categories?post=402"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/tags?post=402"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}