{"id":18482,"date":"2014-10-01T06:24:48","date_gmt":"2014-09-30T22:24:48","guid":{"rendered":"https:\/\/2blog.ilc.edu.tw\/25793\/2014\/10\/01\/banana-pi-%e6%b8%ac%e8%a9%a6-bananian-%e7%af%87-%e5%ae%89%e8%a3%9d-fail2ban\/"},"modified":"2014-10-01T06:24:48","modified_gmt":"2014-09-30T22:24:48","slug":"banana-pi-%e6%b8%ac%e8%a9%a6-bananian-%e7%af%87-%e5%ae%89%e8%a3%9d-fail2ban","status":"publish","type":"post","link":"https:\/\/2blog.ilc.edu.tw\/25793\/2014\/10\/01\/banana-pi-%e6%b8%ac%e8%a9%a6-bananian-%e7%af%87-%e5%ae%89%e8%a3%9d-fail2ban\/","title":{"rendered":"Banana Pi \u6e2c\u8a66 – Bananian \u7bc7 \u5b89\u88dd fail2ban"},"content":{"rendered":"

\u56e0\u70ba\u662f\u6e2c\u8a66\u53ca\u53ef\u80fd\u5c0d\u5916\u670d\u52d9\u7684\u7cfb\u7d71\uff0c\u6240\u4ee5\u7121\u6cd5\u8a2d\u5b9a\u592a\u56b4\u683c\u7684\u9632\u706b\u7246\u898f\u5247\uff0c\u6240\u4ee5\u52a0\u88dd\u4e86 fail2ban\u00a0\u4f86\u52a0\u5f37\u7cfb\u7d71\u7684\u5b89\u5168\u3002
# apt-get install fail2ban<\/span><\/p>\n

\u4fee\u6539\u8a2d\u5b9a\u6a94
# vim \/etc\/fail2ban\/jail.conf<\/span>
[ssh]<\/span><\/p>\n

enabled\u00a0 = true<\/span>
port\u00a0\u00a0\u00a0\u00a0 = ssh<\/span>
filter\u00a0\u00a0 = sshd<\/span>
logpath\u00a0 = \/var\/log\/auth.log<\/span>
maxretry = 3<\/span>
bantime\u00a0 = 86400<\/span>
[@more@]
\u91cd\u65b0\u555f\u52d5 fail2ban \u670d\u52d9
# \/etc\/init.d\/fail2ban restart<\/span>
[ ok ] Restarting authentication failure monitor: fail2ban.<\/span><\/p>\n

\u6aa2\u67e5 fail2ban \u7684\u72c0\u614b
# fail2ban-client status<\/span>
Status
|- Number of jail:\u00a0\u00a0\u00a0\u00a0\u00a0 1
`- Jail list:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 ssh<\/span><\/p>\n

\u4ee5 Client\u00a0 IP 192.168.1.1 \u5617\u8a66\u5c0d Server IP 192.168.1.109 \u5617\u8a66\u9023\u7dda\u932f\u8aa4\u5e7e\u6b21\u4e4b\u5f8c
\u5217\u51fa fail2ban \u5075\u6e2c\u5230\u7684 SSH \u653b\u64ca
# fail2ban-client status ssh<\/span>
Status for the jail: ssh
|- filter
|\u00a0 |- File list:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/var\/log\/auth.log
|\u00a0 |- Currently failed: 1
|\u00a0 `- Total failed:\u00a0\u00a0\u00a0\u00a0 1
<\/span>`- action<\/span>
\u00a0\u00a0 |- Currently banned: 1<\/span>
\u00a0\u00a0 |\u00a0 `- IP list:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 192.168.1.1<\/span>
\u00a0\u00a0 `- Total banned:\u00a0\u00a0\u00a0\u00a0 1<\/span><\/p>\n

\u5217\u51fa fail2ban-ssh \u7684\u898f\u5247
# iptables -t filter -L fail2ban-ssh -n<\/span>
Chain fail2ban-ssh (1 references)<\/span>
target\u00a0\u00a0\u00a0\u00a0 prot opt source\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 destination<\/span>
DROP\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 all\u00a0 —\u00a0 192.168.1.1\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0.0.0.0\/0<\/span>
RETURN\u00a0\u00a0\u00a0\u00a0 all\u00a0 —\u00a0 0.0.0.0\/0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0.0.0.0\/0<\/span><\/p>\n

\u89e3\u9664\u65b9\u5f0f\uff1a
# iptables -D fail2ban-ssh\u00a0 -s 192.168.1.1 -j DROP<\/p>\n

<\/span>\u904b\u4f5c\u4e00\u6bb5\u6642\u9593\u5f8c\uff0c\u770b\u4e00\u4e0b\u6210\u679c\uff1a
# iptables -t filter -L fail2ban-ssh -n<\/span>
Chain fail2ban-ssh (1 references)<\/span>
target\u00a0\u00a0\u00a0\u00a0 prot opt source\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 destination<\/span>
DROP\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 all\u00a0 —\u00a0 61.174.51.211<\/span>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0.0.0.0\/0<\/span>
DROP\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 all\u00a0 —\u00a0 122.225.109.100<\/span>\u00a0\u00a0\u00a0\u00a0\u00a0 0.0.0.0\/0<\/span>
DROP\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 all\u00a0 —\u00a0 61.174.51.215<\/span>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0.0.0.0\/0<\/span>
RETURN\u00a0\u00a0\u00a0\u00a0 all\u00a0 —\u00a0 0.0.0.0\/0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0.0.0.0\/0<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

\u56e0\u70ba\u662f\u6e2c\u8a66\u53ca\u53ef\u80fd\u5c0d\u5916\u670d\u52d9\u7684\u7cfb\u7d71\uff0c\u6240\u4ee5\u7121\u6cd5\u8a2d\u5b9a\u592a\u56b4\u683c\u7684\u9632\u706b\u7246\u898f\u5247\uff0c\u6240\u4ee5\u52a0\u88dd\u4e86 fail2ban\u00a0\u4f86\u52a0\u5f37\u7cfb\u7d71\u7684\u5b89\u5168 … <\/p>\n

\u95b1\u8b80\u5168\u6587\u3008Banana Pi \u6e2c\u8a66 – Bananian \u7bc7 \u5b89\u88dd fail2ban\u3009<\/span><\/a><\/p>\n","protected":false},"author":55,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[162,138],"tags":[],"class_list":["post-18482","post","type-post","status-publish","format-standard","hentry","category-c-83744","category-c-78483"],"meta_key":{"_pingme":["1"],"_encloseme":["1"],"lt_post_id":["518582"]},"_links":{"self":[{"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/posts\/18482"}],"collection":[{"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/users\/55"}],"replies":[{"embeddable":true,"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/comments?post=18482"}],"version-history":[{"count":0,"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/posts\/18482\/revisions"}],"wp:attachment":[{"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/media?parent=18482"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/categories?post=18482"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/tags?post=18482"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}