THE MOMENT, THE MEMENTO

最近又开始折腾办公室的电脑——似乎最近每周的一、二都会忙于安装系统或者新软件，准备改为使用Linux（主要原因是）。

从上周四开始就一直在装机，期间换了Ubuntu 9.04（正好刚刚发布就用上）、Fedora 10，Fedora 9（前两个不能用是因为ICC居然嫌他们版本太高，FC9是因为刻的光盘根本就没发安装），最后只好安装成CentOS 5.3，至少这个以前安装过ICC，应该不会有问题。

一个下午都在更新软件包，到了晚上才想起来，应该要设置防火墙避免SSH登录攻击。

晚上到家以后开始赶紧登录设置防火墙，同时检查一下日志，发现居然已经有很多的攻击记录了：

Apr 27 19:14:12 windwood-office sshd[3073]: Did not receive identification string from 221.10.62.28
Apr 27 19:24:13 windwood-office sshd[3416]: Invalid user staff from 221.10.62.28
Apr 27 19:24:13 windwood-office sshd[3417]: input_userauth_request: invalid user staff
Apr 27 19:24:13 windwood-office sshd[3416]: pam_unix(sshd:auth): check pass; user unknown
Apr 27 19:24:13 windwood-office sshd[3416]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=221.10.62.28
Apr 27 19:24:13 windwood-office sshd[3416]: pam_succeed_if(sshd:auth): error retrieving information about user staff
Apr 27 19:24:15 windwood-office sshd[3416]: Failed password for invalid user staff from 221.10.62.28 port 14701 ssh2
Apr 27 19:24:15 windwood-office sshd[3417]: Received disconnect from 221.10.62.28: 11: Bye Bye
Apr 27 19:24:17 windwood-office sshd[3418]: Invalid user sales from 221.10.62.28
Apr 27 19:24:17 windwood-office sshd[3419]: input_userauth_request: invalid user sales
Apr 27 19:24:17 windwood-office sshd[3418]: pam_unix(sshd:auth): check pass; user unknown
Apr 27 19:24:17 windwood-office sshd[3418]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=221.10.62.28
Apr 27 19:24:17 windwood-office sshd[3418]: pam_succeed_if(sshd:auth): error retrieving information about user sales
Apr 27 19:24:19 windwood-office sshd[3418]: Failed password for invalid user sales from 221.10.62.28 port 16597 ssh2
Apr 27 19:24:19 windwood-office sshd[3419]: Received disconnect from 221.10.62.28: 11: Bye Bye
Apr 27 19:24:25 windwood-office sshd[3420]: Invalid user recruit from 221.10.62.28
Apr 27 19:24:25 windwood-office sshd[3421]: input_userauth_request: invalid user recruit
Apr 27 19:24:25 windwood-office sshd[3420]: pam_unix(sshd:auth): check pass; user unknown
Apr 27 19:24:25 windwood-office sshd[3420]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=221.10.62.28
Apr 27 19:24:25 windwood-office sshd[3420]: pam_succeed_if(sshd:auth): error retrieving information about user recruit
Apr 27 19:24:27 windwood-office sshd[3420]: Failed password for invalid user recruit from 221.10.62.28 port 17878 ssh2
Apr 27 19:24:27 windwood-office sshd[3421]: Received disconnect from 221.10.62.28: 11: Bye Bye
Apr 27 19:24:28 windwood-office sshd[3422]: Invalid user alias from 221.10.62.28
Apr 27 19:24:28 windwood-office sshd[3423]: input_userauth_request: invalid user alias
Apr 27 19:24:28 windwood-office sshd[3422]: pam_unix(sshd:auth): check pass; user unknown
Apr 27 19:24:28 windwood-office sshd[3422]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=221.10.62.28
Apr 27 19:24:28 windwood-office sshd[3422]: pam_succeed_if(sshd:auth): error retrieving information about user alias
Apr 27 19:24:30 windwood-office sshd[3422]: Failed password for invalid user alias from 221.10.62.28 port 19445 ssh2
Apr 27 19:24:30 windwood-office sshd[3423]: Received disconnect from 221.10.62.28: 11: Bye Bye
Apr 27 19:24:32 windwood-office sshd[3424]: Invalid user office from 221.10.62.28
Apr 27 19:24:32 windwood-office sshd[3425]: input_userauth_request: invalid user office
Apr 27 19:24:32 windwood-office sshd[3424]: pam_unix(sshd:auth): check pass; user unknown
Apr 27 19:24:32 windwood-office sshd[3424]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=221.10.62.28
Apr 27 19:24:32 windwood-office sshd[3424]: pam_succeed_if(sshd:auth): error retrieving information about user office
Apr 27 19:24:33 windwood-office sshd[3424]: Failed password for invalid user office from 221.10.62.28 port 20668 ssh2
Apr 27 19:24:33 windwood-office sshd[3425]: Received disconnect from 221.10.62.28: 11: Bye Bye
Apr 27 19:24:35 windwood-office sshd[3426]: Invalid user samba from 221.10.62.28
Apr 27 19:24:35 windwood-office sshd[3427]: input_userauth_request: invalid user samba
Apr 27 19:24:35 windwood-office sshd[3426]: pam_unix(sshd:auth): check pass; user unknown
Apr 27 19:24:35 windwood-office sshd[3426]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=221.10.62.28
Apr 27 19:24:35 windwood-office sshd[3426]: pam_succeed_if(sshd:auth): error retrieving information about user samba
Apr 27 19:24:37 windwood-office sshd[3426]: Failed password for invalid user samba from 221.10.62.28 port 21377 ssh2
Apr 27 19:24:37 windwood-office sshd[3427]: Received disconnect from 221.10.62.28: 11: Bye Bye
Apr 27 19:24:39 windwood-office sshd[3429]: Invalid user tomcat from 221.10.62.28
Apr 27 19:24:39 windwood-office sshd[3430]: input_userauth_request: invalid user tomcat
Apr 27 19:24:39 windwood-office sshd[3429]: pam_unix(sshd:auth): check pass; user unknown
Apr 27 19:24:39 windwood-office sshd[3429]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=221.10.62.28
Apr 27 19:24:39 windwood-office sshd[3429]: pam_succeed_if(sshd:auth): error retrieving information about user tomcat
Apr 27 19:24:41 windwood-office sshd[3429]: Failed password for invalid user tomcat from 221.10.62.28 port 22216 ssh2
Apr 27 19:24:41 windwood-office sshd[3430]: Received disconnect from 221.10.62.28: 11: Bye Bye
Apr 27 19:24:43 windwood-office sshd[3431]: Invalid user webadmin from 221.10.62.28
Apr 27 19:24:43 windwood-office sshd[3432]: input_userauth_request: invalid user webadmin
Apr 27 19:24:43 windwood-office sshd[3431]: pam_unix(sshd:auth): check pass; user unknown
Apr 27 19:24:43 windwood-office sshd[3431]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=221.10.62.28
Apr 27 19:24:43 windwood-office sshd[3431]: pam_succeed_if(sshd:auth): error retrieving information about user webadmin
Apr 27 19:24:44 windwood-office sshd[3431]: Failed password for invalid user webadmin from 221.10.62.28 port 23351 ssh2
Apr 27 19:24:44 windwood-office sshd[3432]: Received disconnect from 221.10.62.28: 11: Bye Bye
Apr 27 19:24:46 windwood-office sshd[3433]: Invalid user spam from 221.10.62.28
Apr 27 19:24:46 windwood-office sshd[3434]: input_userauth_request: invalid user spam
Apr 27 19:24:46 windwood-office sshd[3433]: pam_unix(sshd:auth): check pass; user unknown
Apr 27 19:24:46 windwood-office sshd[3433]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=221.10.62.28
Apr 27 19:24:46 windwood-office sshd[3433]: pam_succeed_if(sshd:auth): error retrieving information about user spam
Apr 27 19:24:48 windwood-office sshd[3433]: Failed password for invalid user spam from 221.10.62.28 port 24612 ssh2
Apr 27 19:24:49 windwood-office sshd[3434]: Received disconnect from 221.10.62.28: 11: Bye Bye
Apr 27 19:24:51 windwood-office sshd[3435]: Invalid user virus from 221.10.62.28
Apr 27 19:24:51 windwood-office sshd[3436]: input_userauth_request: invalid user virus
Apr 27 19:24:51 windwood-office sshd[3435]: pam_unix(sshd:auth): check pass; user unknown
Apr 27 19:24:51 windwood-office sshd[3435]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=221.10.62.28
Apr 27 19:24:51 windwood-office sshd[3435]: pam_succeed_if(sshd:auth): error retrieving information about user virus
Apr 27 19:24:52 windwood-office sshd[3435]: Failed password for invalid user virus from 221.10.62.28 port 25424 ssh2
Apr 27 19:24:52 windwood-office sshd[3436]: Received disconnect from 221.10.62.28: 11: Bye Bye
Apr 27 19:24:57 windwood-office sshd[3437]: Invalid user cyrus from 221.10.62.28
Apr 27 19:24:57 windwood-office sshd[3438]: input_userauth_request: invalid user cyrus
Apr 27 19:24:57 windwood-office sshd[3437]: pam_unix(sshd:auth): check pass; user unknown
Apr 27 19:24:57 windwood-office sshd[3437]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=221.10.62.28
Apr 27 19:24:57 windwood-office sshd[3437]: pam_succeed_if(sshd:auth): error retrieving information about user cyrus
Apr 27 19:24:59 windwood-office sshd[3437]: Failed password for invalid user cyrus from 221.10.62.28 port 26240 ssh2
Apr 27 19:24:59 windwood-office sshd[3438]: Received disconnect from 221.10.62.28: 11: Bye Bye
Apr 27 19:25:00 windwood-office sshd[3439]: Invalid user oracle from 221.10.62.28
Apr 27 19:25:00 windwood-office sshd[3440]: input_userauth_request: invalid user oracle
Apr 27 19:25:00 windwood-office sshd[3439]: pam_unix(sshd:auth): check pass; user unknown
Apr 27 19:25:00 windwood-office sshd[3439]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=221.10.62.28
Apr 27 19:25:00 windwood-office sshd[3439]: pam_succeed_if(sshd:auth): error retrieving information about user oracle
Apr 27 19:25:03 windwood-office sshd[3439]: Failed password for invalid user oracle from 221.10.62.28 port 28065 ssh2
Apr 27 19:25:03 windwood-office sshd[3440]: Received disconnect from 221.10.62.28: 11: Bye Bye
Apr 27 19:25:05 windwood-office sshd[3442]: Invalid user michael from 221.10.62.28
Apr 27 19:25:05 windwood-office sshd[3443]: input_userauth_request: invalid user michael
Apr 27 19:25:05 windwood-office sshd[3442]: pam_unix(sshd:auth): check pass; user unknown
Apr 27 19:25:05 windwood-office sshd[3442]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=221.10.62.28
Apr 27 19:25:05 windwood-office sshd[3442]: pam_succeed_if(sshd:auth): error retrieving information about user michael
Apr 27 19:25:07 windwood-office sshd[3442]: Failed password for invalid user michael from 221.10.62.28 port 28929 ssh2
Apr 27 19:25:07 windwood-office sshd[3443]: Received disconnect from 221.10.62.28: 11: Bye Bye
Apr 27 19:25:11 windwood-office sshd[3444]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=221.10.62.28  user=ftp
Apr 27 19:25:13 windwood-office sshd[3444]: Failed password for ftp from 221.10.62.28 port 30279 ssh2
Apr 27 19:25:13 windwood-office sshd[3445]: Received disconnect from 221.10.62.28: 11: Bye Bye
Apr 27 19:25:15 windwood-office sshd[3446]: Invalid user test from 221.10.62.28
Apr 27 19:25:15 windwood-office sshd[3447]: input_userauth_request: invalid user test
Apr 27 19:25:15 windwood-office sshd[3446]: pam_unix(sshd:auth): check pass; user unknown
Apr 27 19:25:15 windwood-office sshd[3446]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=221.10.62.28
Apr 27 19:25:15 windwood-office sshd[3446]: pam_succeed_if(sshd:auth): error retrieving information about user test
Apr 27 19:25:17 windwood-office sshd[3446]: Failed password for invalid user test from 221.10.62.28 port 31666 ssh2
Apr 27 19:25:17 windwood-office sshd[3447]: Received disconnect from 221.10.62.28: 11: Bye Bye
Apr 27 19:25:19 windwood-office sshd[3448]: Invalid user webmaster from 221.10.62.28
Apr 27 19:25:19 windwood-office sshd[3449]: input_userauth_request: invalid user webmaster
Apr 27 19:25:19 windwood-office sshd[3448]: pam_unix(sshd:auth): check pass; user unknown
Apr 27 19:25:19 windwood-office sshd[3448]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=221.10.62.28
Apr 27 19:25:19 windwood-office sshd[3448]: pam_succeed_if(sshd:auth): error retrieving information about user webmaster
Apr 27 19:25:21 windwood-office sshd[3448]: Failed password for invalid user webmaster from 221.10.62.28 port 33032 ssh2
Apr 27 19:25:21 windwood-office sshd[3449]: Received disconnect from 221.10.62.28: 11: Bye Bye
Apr 27 19:25:22 windwood-office sshd[3450]: Invalid user postmaster from 221.10.62.28
Apr 27 19:25:22 windwood-office sshd[3451]: input_userauth_request: invalid user postmaster
Apr 27 19:25:22 windwood-office sshd[3450]: pam_unix(sshd:auth): check pass; user unknown
Apr 27 19:25:22 windwood-office sshd[3450]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=221.10.62.28
Apr 27 19:25:22 windwood-office sshd[3450]: pam_succeed_if(sshd:auth): error retrieving information about user postmaster
Apr 27 19:25:24 windwood-office sshd[3450]: Failed password for invalid user postmaster from 221.10.62.28 port 34190 ssh2
Apr 27 19:25:24 windwood-office sshd[3451]: Received disconnect from 221.10.62.28: 11: Bye Bye
Apr 27 19:25:26 windwood-office sshd[3452]: Invalid user postfix from 221.10.62.28
Apr 27 19:25:26 windwood-office sshd[3453]: input_userauth_request: invalid user postfix
Apr 27 19:25:26 windwood-office sshd[3452]: pam_unix(sshd:auth): check pass; user unknown
Apr 27 19:25:26 windwood-office sshd[3452]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=221.10.62.28
Apr 27 19:25:26 windwood-office sshd[3452]: pam_succeed_if(sshd:auth): error retrieving information about user postfix
Apr 27 19:25:27 windwood-office sshd[3452]: Failed password for invalid user postfix from 221.10.62.28 port 35434 ssh2
Apr 27 19:25:27 windwood-office sshd[3453]: Received disconnect from 221.10.62.28: 11: Bye Bye
Apr 27 19:25:32 windwood-office sshd[3454]: Invalid user postgres from 221.10.62.28
Apr 27 19:25:32 windwood-office sshd[3455]: input_userauth_request: invalid user postgres
Apr 27 19:25:32 windwood-office sshd[3454]: pam_unix(sshd:auth): check pass; user unknown
Apr 27 19:25:32 windwood-office sshd[3454]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=221.10.62.28
Apr 27 19:25:32 windwood-office sshd[3454]: pam_succeed_if(sshd:auth): error retrieving information about user postgres
Apr 27 19:25:34 windwood-office sshd[3454]: Failed password for invalid user postgres from 221.10.62.28 port 35817 ssh2
Apr 27 19:25:34 windwood-office sshd[3455]: Received disconnect from 221.10.62.28: 11: Bye Bye
Apr 27 19:25:36 windwood-office sshd[3456]: Invalid user paul from 221.10.62.28
Apr 27 19:25:36 windwood-office sshd[3457]: input_userauth_request: invalid user paul
Apr 27 19:25:36 windwood-office sshd[3456]: pam_unix(sshd:auth): check pass; user unknown
Apr 27 19:25:36 windwood-office sshd[3456]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=221.10.62.28
Apr 27 19:25:36 windwood-office sshd[3456]: pam_succeed_if(sshd:auth): error retrieving information about user paul
Apr 27 19:25:38 windwood-office sshd[3456]: Failed password for invalid user paul from 221.10.62.28 port 37401 ssh2
Apr 27 19:25:38 windwood-office sshd[3457]: Received disconnect from 221.10.62.28: 11: Bye Bye
Apr 27 19:25:40 windwood-office sshd[3458]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=221.10.62.28  user=root
Apr 27 19:25:42 windwood-office sshd[3458]: Failed password for root from 221.10.62.28 port 38622 ssh2
Apr 27 19:25:42 windwood-office sshd[3459]: Received disconnect from 221.10.62.28: 11: Bye Bye
Apr 27 19:25:45 windwood-office sshd[3460]: Invalid user guest from 221.10.62.28
Apr 27 19:25:45 windwood-office sshd[3461]: input_userauth_request: invalid user guest
Apr 27 19:25:45 windwood-office sshd[3460]: pam_unix(sshd:auth): check pass; user unknown
Apr 27 19:25:45 windwood-office sshd[3460]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=221.10.62.28
Apr 27 19:25:45 windwood-office sshd[3460]: pam_succeed_if(sshd:auth): error retrieving information about user guest
Apr 27 19:25:46 windwood-office sshd[3460]: Failed password for invalid user guest from 221.10.62.28 port 39553 ssh2
Apr 27 19:25:46 windwood-office sshd[3461]: Received disconnect from 221.10.62.28: 11: Bye Bye
Apr 27 19:25:49 windwood-office sshd[3462]: Invalid user admin from 221.10.62.28
Apr 27 19:25:49 windwood-office sshd[3463]: input_userauth_request: invalid user admin
Apr 27 19:25:49 windwood-office sshd[3462]: pam_unix(sshd:auth): check pass; user unknown
Apr 27 19:25:49 windwood-office sshd[3462]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=221.10.62.28
Apr 27 19:25:49 windwood-office sshd[3462]: pam_succeed_if(sshd:auth): error retrieving information about user admin
Apr 27 19:25:51 windwood-office sshd[3462]: Failed password for invalid user admin from 221.10.62.28 port 40673 ssh2
Apr 27 19:25:51 windwood-office sshd[3463]: Received disconnect from 221.10.62.28: 11: Bye Bye
Apr 27 19:25:52 windwood-office sshd[3464]: Invalid user linux from 221.10.62.28
Apr 27 19:25:52 windwood-office sshd[3465]: input_userauth_request: invalid user linux
Apr 27 19:25:52 windwood-office sshd[3464]: pam_unix(sshd:auth): check pass; user unknown
Apr 27 19:25:52 windwood-office sshd[3464]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=221.10.62.28
Apr 27 19:25:52 windwood-office sshd[3464]: pam_succeed_if(sshd:auth): error retrieving information about user linux
Apr 27 19:25:54 windwood-office sshd[3464]: Failed password for invalid user linux from 221.10.62.28 port 41756 ssh2
Apr 27 19:25:56 windwood-office sshd[3467]: Invalid user user from 221.10.62.28
Apr 27 19:25:56 windwood-office sshd[3468]: input_userauth_request: invalid user user
Apr 27 19:25:56 windwood-office sshd[3467]: pam_unix(sshd:auth): check pass; user unknown
Apr 27 19:25:56 windwood-office sshd[3467]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=221.10.62.28
Apr 27 19:25:56 windwood-office sshd[3467]: pam_succeed_if(sshd:auth): error retrieving information about user user
Apr 27 19:25:58 windwood-office sshd[3467]: Failed password for invalid user user from 221.10.62.28 port 42986 ssh2
Apr 27 19:25:59 windwood-office sshd[3468]: Received disconnect from 221.10.62.28: 11: Bye Bye
Apr 27 19:26:00 windwood-office sshd[3469]: Invalid user david from 221.10.62.28
Apr 27 19:26:00 windwood-office sshd[3470]: input_userauth_request: invalid user david
Apr 27 19:26:00 windwood-office sshd[3469]: pam_unix(sshd:auth): check pass; user unknown
Apr 27 19:26:00 windwood-office sshd[3469]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=221.10.62.28
Apr 27 19:26:00 windwood-office sshd[3469]: pam_succeed_if(sshd:auth): error retrieving information about user david
Apr 27 19:26:01 windwood-office sshd[3465]: Received disconnect from 221.10.62.28: 11: Bye Bye
Apr 27 19:26:02 windwood-office sshd[3469]: Failed password for invalid user david from 221.10.62.28 port 43672 ssh2
Apr 27 19:26:03 windwood-office sshd[3470]: Received disconnect from 221.10.62.28: 11: Bye Bye
Apr 27 19:26:04 windwood-office sshd[3471]: Invalid user web from 221.10.62.28
Apr 27 19:26:04 windwood-office sshd[3472]: input_userauth_request: invalid user web
Apr 27 19:26:04 windwood-office sshd[3471]: pam_unix(sshd:auth): check pass; user unknown
Apr 27 19:26:04 windwood-office sshd[3471]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=221.10.62.28
Apr 27 19:26:04 windwood-office sshd[3471]: pam_succeed_if(sshd:auth): error retrieving information about user web
Apr 27 19:26:06 windwood-office sshd[3471]: Failed password for invalid user web from 221.10.62.28 port 44651 ssh2
Apr 27 19:26:07 windwood-office sshd[3472]: Received disconnect from 221.10.62.28: 11: Bye Bye
Apr 27 19:26:08 windwood-office sshd[3473]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=221.10.62.28  user=apache
Apr 27 19:26:09 windwood-office sshd[3473]: Failed password for apache from 221.10.62.28 port 45793 ssh2
Apr 27 19:26:09 windwood-office sshd[3474]: Received disconnect from 221.10.62.28: 11: Bye Bye
Apr 27 19:26:11 windwood-office sshd[3475]: Invalid user pgsql from 221.10.62.28
Apr 27 19:26:11 windwood-office sshd[3476]: input_userauth_request: invalid user pgsql
Apr 27 19:26:11 windwood-office sshd[3475]: pam_unix(sshd:auth): check pass; user unknown
Apr 27 19:26:11 windwood-office sshd[3475]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=221.10.62.28
Apr 27 19:26:11 windwood-office sshd[3475]: pam_succeed_if(sshd:auth): error retrieving information about user pgsql
Apr 27 19:26:13 windwood-office sshd[3475]: Failed password for invalid user pgsql from 221.10.62.28 port 46872 ssh2
Apr 27 19:26:13 windwood-office sshd[3476]: Received disconnect from 221.10.62.28: 11: Bye Bye
Apr 27 19:26:17 windwood-office sshd[3478]: Invalid user mysql from 221.10.62.28
Apr 27 19:26:17 windwood-office sshd[3479]: input_userauth_request: invalid user mysql
Apr 27 19:26:17 windwood-office sshd[3478]: pam_unix(sshd:auth): check pass; user unknown
Apr 27 19:26:17 windwood-office sshd[3478]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=221.10.62.28
Apr 27 19:26:17 windwood-office sshd[3478]: pam_succeed_if(sshd:auth): error retrieving information about user mysql
Apr 27 19:26:20 windwood-office sshd[3478]: Failed password for invalid user mysql from 221.10.62.28 port 47212 ssh2
Apr 27 19:26:20 windwood-office sshd[3479]: Received disconnect from 221.10.62.28: 11: Bye Bye
Apr 27 19:26:23 windwood-office sshd[3480]: Invalid user info from 221.10.62.28
Apr 27 19:26:23 windwood-office sshd[3481]: input_userauth_request: invalid user info
Apr 27 19:26:23 windwood-office sshd[3480]: pam_unix(sshd:auth): check pass; user unknown
Apr 27 19:26:23 windwood-office sshd[3480]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=221.10.62.28
Apr 27 19:26:23 windwood-office sshd[3480]: pam_succeed_if(sshd:auth): error retrieving information about user info
Apr 27 19:26:25 windwood-office sshd[3480]: Failed password for invalid user info from 221.10.62.28 port 49443 ssh2
Apr 27 19:26:25 windwood-office sshd[3481]: Received disconnect from 221.10.62.28: 11: Bye Bye
Apr 27 19:26:26 windwood-office sshd[3482]: Invalid user tony from 221.10.62.28
Apr 27 19:26:26 windwood-office sshd[3483]: input_userauth_request: invalid user tony
Apr 27 19:26:26 windwood-office sshd[3482]: pam_unix(sshd:auth): check pass; user unknown
Apr 27 19:26:26 windwood-office sshd[3482]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=221.10.62.28
Apr 27 19:26:26 windwood-office sshd[3482]: pam_succeed_if(sshd:auth): error retrieving information about user tony
Apr 27 19:26:28 windwood-office sshd[3482]: Failed password for invalid user tony from 221.10.62.28 port 50715 ssh2
Apr 27 19:26:28 windwood-office sshd[3483]: Received disconnect from 221.10.62.28: 11: Bye Bye
Apr 27 19:26:40 windwood-office sshd[3485]: Connection closed by 221.10.62.28

把这个记录完整的贴出来，是为了表明这个网络环境是多么的恐怖，仿佛处在一个垃圾堆里，到处都是有毒的细菌一般，身边无时不刻都有人（也许是“僵尸”在刺探着你）。

想起之前单位购买了一个公司的用友软件，结果他们只会安装没有打过补丁的Sql，结果软件安装完不到半天，一堆的病毒就进来了，可以想象网络里到处都充斥着病毒，这个世界太疯狂，太危险了。

不知道回到火星会不会更好一些呢？