每天都有人试图 ssh 我的 VPS，

[cattyhouse]

已经对sshd_config做了一些设置
1， 只允许用key登陆，不允许用密码登录，不允许空密码
2，设置了Allowusers 为当前用户和root，理论上其他用户无法ssh进来.

端口还是22. 不想改了，不然每次ssh进去都要写 -p参数,麻烦。这些设置够了吗？
以下是lastb输出部分结果：

admin ssh:notty 122.225.109.201 Mon Jan 5 12:36 - 12:36 (00:00)
admin ssh:notty 122.225.97.77 Mon Jan 5 11:33 - 11:33 (00:00)
admin ssh:notty 122.225.109.105 Mon Jan 5 08:27 - 08:27 (00:00)
admin ssh:notty 122.225.109.105 Mon Jan 5 08:21 - 08:21 (00:00)
admin ssh:notty 122.225.109.106 Mon Jan 5 08:14 - 08:14 (00:00)
admin ssh:notty 122.225.109.106 Mon Jan 5 08:07 - 08:07 (00:00)
testuser ssh:notty 135.109.206.35 Mon Jan 5 07:04 - 07:04 (00:00)
postgres ssh:notty 135.109.206.35 Mon Jan 5 07:02 - 07:02 (00:00)
admin ssh:notty 135.109.206.35 Mon Jan 5 06:59 - 06:59 (00:00)
sybase ssh:notty 135.109.206.35 Mon Jan 5 06:57 - 06:57 (00:00)
mysql ssh:notty 135.109.206.35 Mon Jan 5 06:55 - 06:55 (00:00)
default ssh:notty 135.109.206.35 Mon Jan 5 06:52 - 06:52 (00:00)
guest ssh:notty 135.109.206.35 Mon Jan 5 06:50 - 06:50 (00:00)
test ssh:notty 135.109.206.35 Mon Jan 5 06:48 - 06:48 (00:00)
support ssh:notty 176.103.49.29 Mon Jan 5 06:40 - 06:40 (00:00)
admin ssh:notty 122.225.109.99 Mon Jan 5 05:20 - 05:20 (00:00)
admin ssh:notty 122.225.109.215 Mon Jan 5 04:28 - 04:28 (00:00)
admin ssh:notty 122.225.109.106 Mon Jan 5 03:29 - 03:29 (00:00)
admin ssh:notty 122.225.109.207 Mon Jan 5 02:43 - 02:43 (00:00)
admin ssh:notty 122.225.109.207 Mon Jan 5 02:36 - 02:36 (00:00)
admin ssh:notty 122.225.97.85 Sun Jan 4 23:09 - 23:09 (00:00)
admin ssh:notty 122.225.97.85 Sun Jan 4 23:08 - 23:08 (00:00)
admin ssh:notty 122.225.109.109 Sun Jan 4 22:13 - 22:13 (00:00)
support ssh:notty 193.104.41.58 Sun Jan 4 20:28 - 20:28 (00:00)
admin ssh:notty 218.2.0.133 Sun Jan 4 12:43 - 12:43 (00:00)
admin ssh:notty 218.2.0.126 Sun Jan 4 12:14 - 12:14 (00:00)
admin ssh:notty 218.2.0.125 Sun Jan 4 03:49 - 03:49 (00:00)
admin ssh:notty 122.225.109.117 Sun Jan 4 01:05 - 01:05 (00:00)
admin ssh:notty 122.225.109.205 Sat Jan 3 12:41 - 12:41 (00:00)
admin ssh:notty 122.225.97.85 Sat Jan 3 12:28 - 12:28 (00:00)
admin ssh:notty 122.225.109.211 Sat Jan 3 00:18 - 00:18 (00:00)
danielle ssh:notty 140.121.101.201 Fri Jan 2 23:19 - 23:19 (00:00)
daniel ssh:notty 140.121.101.201 Fri Jan 2 23:15 - 23:15 (00:00)
dan ssh:notty 140.121.101.201 Fri Jan 2 23:10 - 23:10 (00:00)
dancer ssh:notty 140.121.101.201 Fri Jan 2 23:06 - 23:06 (00:00)
dana ssh:notty 140.121.101.201 Fri Jan 2 23:01 - 23:01 (00:00)
dan ssh:notty 140.121.101.201 Fri Jan 2 22:57 - 22:57 (00:00)
daisy ssh:notty 140.121.101.201 Fri Jan 2 22:52 - 22:52 (00:00)
d ssh:notty 140.121.101.201 Fri Jan 2 22:43 - 22:43 (00:00)
cynthia ssh:notty 140.121.101.201 Fri Jan 2 22:39 - 22:39 (00:00)
customer ssh:notty 140.121.101.201 Fri Jan 2 22:34 - 22:34 (00:00)
cshrc ssh:notty 140.121.101.201 Fri Jan 2 22:30 - 22:30 (00:00)
cs ssh:notty 140.121.101.201 Fri Jan 2 22:25 - 22:25 (00:00)
crystal ssh:notty 140.121.101.201 Fri Jan 2 22:21 - 22:21 (00:00)
cristina ssh:notty 140.121.101.201 Fri Jan 2 22:16 - 22:16 (00:00)
cristi ssh:notty 140.121.101.201 Fri Jan 2 22:12 - 22:12 (00:00)
criminal ssh:notty 140.121.101.201 Fri Jan 2 22:07 - 22:07 (00:00)
cretin ssh:notty 140.121.101.201 Fri Jan 2 22:03 - 22:03 (00:00)
creosote ssh:notty 140.121.101.201 Fri Jan 2 21:58 - 21:58 (00:00)
credit ssh:notty 140.121.101.201 Fri Jan 2 21:54 - 21:54 (00:00)
creation ssh:notty 140.121.101.201 Fri Jan 2 21:49 - 21:49 (00:00)
create ssh:notty 140.121.101.201 Fri Jan 2 21:45 - 21:45 (00:00)
crcard ssh:notty 140.121.101.201 Fri Jan 2 21:40 - 21:40 (00:00)
cpanel ssh:notty 140.121.101.201 Fri Jan 2 21:36 - 21:36 (00:00)
cow ssh:notty 140.121.101.201 Fri Jan 2 21:32 - 21:32 (00:00)
couscous ssh:notty 140.121.101.201 Fri Jan 2 21:27 - 21:27 (00:00)
costel ssh:notty 140.121.101.201 Fri Jan 2 21:23 - 21:23 (00:00)
corneliu ssh:notty 140.121.101.201 Fri Jan 2 21:18 - 21:18 (00:00)
cooper ssh:notty 140.121.101.201 Fri Jan 2 21:14 - 21:14 (00:00)
cool ssh:notty 140.121.101.201 Fri Jan 2 21:09 - 21:09 (00:00)
cookie ssh:notty 140.121.101.201 Fri Jan 2 21:05 - 21:05 (00:00)
console ssh:notty 140.121.101.201 Fri Jan 2 21:00 - 21:00 (00:00)
connie ssh:notty 140.121.101.201 Fri Jan 2 20:56 - 20:56 (00:00)
connect ssh:notty 140.121.101.201 Fri Jan 2 20:51 - 20:51 (00:00)
condom ssh:notty 140.121.101.201 Fri Jan 2 20:47 - 20:47 (00:00)
condo ssh:notty 140.121.101.201 Fri Jan 2 20:42 - 20:42 (00:00)
comrades ssh:notty 140.121.101.201 Fri Jan 2 20:38 - 20:38 (00:00)
comrade ssh:notty 140.121.101.201 Fri Jan 2 20:33 - 20:33 (00:00)
computer ssh:notty 140.121.101.201 Fri Jan 2 20:29 - 20:29 (00:00)
commrade ssh:notty 140.121.101.201 Fri Jan 2 20:24 - 20:24 (00:00)
collins ssh:notty 140.121.101.201 Fri Jan 2 20:20 - 20:20 (00:00)
collier ssh:notty 140.121.101.201 Fri Jan 2 20:15 - 20:15 (00:00)
colin ssh:notty 140.121.101.201 Fri Jan 2 20:11 - 20:11 (00:00)
cola ssh:notty 140.121.101.201 Fri Jan 2 20:06 - 20:06 (00:00)
coke ssh:notty 140.121.101.201 Fri Jan 2 20:02 - 20:02 (00:00)
coffee ssh:notty 140.121.101.201 Fri Jan 2 19:57 - 19:57 (00:00)
code ssh:notty 140.121.101.201 Fri Jan 2 19:52 - 19:52 (00:00)
coach ssh:notty 140.121.101.201 Fri Jan 2 19:48 - 19:48 (00:00)
clusters ssh:notty 140.121.101.201 Fri Jan 2 19:43 - 19:43 (00:00)
cluster ssh:notty 140.121.101.201 Fri Jan 2 19:39 - 19:39 (00:00)
client ssh:notty 140.121.101.201 Fri Jan 2 19:34 - 19:34 (00:00)
cleopatr ssh:notty 140.121.101.201 Fri Jan 2 19:30 - 19:30 (00:00)
claudia ssh:notty 140.121.101.201 Fri Jan 2 19:25 - 19:25 (00:00)
classic ssh:notty 140.121.101.201 Fri Jan 2 19:21 - 19:21 (00:00)
class ssh:notty 140.121.101.201 Fri Jan 2 19:16 - 19:16 (00:00)
clamav ssh:notty 140.121.101.201 Fri Jan 2 19:12 - 19:12 (00:00)
cindy ssh:notty 140.121.101.201 Fri Jan 2 19:07 - 19:07 (00:00)
christy ssh:notty 140.121.101.201 Fri Jan 2 19:03 - 19:03 (00:00)
christin ssh:notty 140.121.101.201 Fri Jan 2 18:58 - 18:58 (00:00)
christin ssh:notty 140.121.101.201 Fri Jan 2 18:54 - 18:54 (00:00)
chris ssh:notty 140.121.101.201 Fri Jan 2 18:49 - 18:49 (00:00)
chinese ssh:notty 140.121.101.201 Fri Jan 2 18:45 - 18:45 (00:00)
chicken ssh:notty 140.121.101.201 Fri Jan 2 18:40 - 18:40 (00:00)
chick ssh:notty 140.121.101.201 Fri Jan 2 18:36 - 18:36 (00:00)
chester ssh:notty 140.121.101.201 Fri Jan 2 18:31 - 18:31 (00:00)
chess ssh:notty 140.121.101.201 Fri Jan 2 18:27 - 18:27 (00:00)
cheryl ssh:notty 140.121.101.201 Fri Jan 2 18:22 - 18:22 (00:00)
chemistr ssh:notty 140.121.101.201 Fri Jan 2 18:18 - 18:18 (00:00)
chem ssh:notty 140.121.101.201 Fri Jan 2 18:13 - 18:13 (00:00)
cheese ssh:notty 140.121.101.201 Fri Jan 2 18:08 - 18:08 (00:00)
chat ssh:notty 140.121.101.201 Fri Jan 2 18:04 - 18:04 (00:00)
charon ssh:notty 140.121.101.201 Fri Jan 2 17:59 - 17:59 (00:00)
charlie ssh:notty 140.121.101.201 Fri Jan 2 17:55 - 17:55 (00:00)
charles ssh:notty 140.121.101.201 Fri Jan 2 17:50 - 17:50 (00:00)
charity ssh:notty 140.121.101.201 Fri Jan 2 17:46 - 17:46 (00:00)
change ssh:notty 140.121.101.201 Fri Jan 2 17:41 - 17:41 (00:00)
cgi ssh:notty 140.121.101.201 Fri Jan 2 17:37 - 17:37 (00:00)
cerulean ssh:notty 140.121.101.201 Fri Jan 2 17:32 - 17:32 (00:00)
cent ssh:notty 140.121.101.201 Fri Jan 2 17:28 - 17:28 (00:00)
celtics ssh:notty 140.121.101.201 Fri Jan 2 17:23 - 17:23 (00:00)
cell ssh:notty 140.121.101.201 Fri Jan 2 17:19 - 17:19 (00:00)
cecily ssh:notty 140.121.101.201 Fri Jan 2 17:14 - 17:14 (00:00)
cdrom ssh:notty 140.121.101.201 Fri Jan 2 17:10 - 17:10 (00:00)
c ssh:notty 140.121.101.201 Fri Jan 2 17:05 - 17:05 (00:00)
cayuga ssh:notty 140.121.101.201 Fri Jan 2 17:01 - 17:01 (00:00)
cathy ssh:notty 140.121.101.201 Fri Jan 2 16:56 - 16:56 (00:00)
catherin ssh:notty 140.121.101.201 Fri Jan 2 16:52 - 16:52 (00:00)
cat ssh:notty 140.121.101.201 Fri Jan 2 16:47 - 16:47 (00:00)
catalin ssh:notty 140.121.101.201 Fri Jan 2 16:43 - 16:43 (00:00)
cat ssh:notty 140.121.101.201 Fri Jan 2 16:39 - 16:39 (00:00)
castle ssh:notty 140.121.101.201 Fri Jan 2 16:34 - 16:34 (00:00)
cascades ssh:notty 140.121.101.201 Fri Jan 2 16:29 - 16:29 (00:00)
carson ssh:notty 140.121.101.201 Fri Jan 2 16:25 - 16:25 (00:00)
carrie ssh:notty 140.121.101.201 Fri Jan 2 16:21 - 16:21 (00:00)
carolyn ssh:notty 140.121.101.201 Fri Jan 2 16:16 - 16:16 (00:00)
caroline ssh:notty 140.121.101.201 Fri Jan 2 16:12 - 16:12 (00:00)
carolina ssh:notty 140.121.101.201 Fri Jan 2 16:07 - 16:07 (00:00)
carole ssh:notty 140.121.101.201 Fri Jan 2 16:03 - 16:03 (00:00)
carol ssh:notty 140.121.101.201 Fri Jan 2 15:58 - 15:58 (00:00)
carmen ssh:notty 140.121.101.201 Fri Jan 2 15:54 - 15:54 (00:00)
carlos ssh:notty 140.121.101.201 Fri Jan 2 15:49 - 15:49 (00:00)
carla ssh:notty 140.121.101.201 Fri Jan 2 15:45 - 15:45 (00:00)
caren ssh:notty 140.121.101.201 Fri Jan 2 15:40 - 15:40 (00:00)
cardinal ssh:notty 140.121.101.201 Fri Jan 2 15:36 - 15:36 (00:00)
cap ssh:notty 140.121.101.201 Fri Jan 2 15:31 - 15:31 (00:00)
cantor ssh:notty 140.121.101.201 Fri Jan 2 15:26 - 15:26 (00:00)
candy ssh:notty 140.121.101.201 Fri Jan 2 15:22 - 15:22 (00:00)
candi ssh:notty 140.121.101.201 Fri Jan 2 15:17 - 15:17 (00:00)
campani ssh:notty 140.121.101.201 Fri Jan 2 15:13 - 15:13 (00:00)
camille ssh:notty 140.121.101.201 Fri Jan 2 15:08 - 15:08 (00:00)
calbert ssh:notty 140.121.101.201 Fri Jan 2 15:04 - 15:04 (00:00)
caesar ssh:notty 140.121.101.201 Fri Jan 2 14:59 - 14:59 (00:00)
cad ssh:notty 140.121.101.201 Fri Jan 2 14:55 - 14:55 (00:00)
c ssh:notty 140.121.101.201 Fri Jan 2 14:50 - 14:50 (00:00)
burgess ssh:notty 140.121.101.201 Fri Jan 2 14:46 - 14:46 (00:00)
bunny ssh:notty 140.121.101.201 Fri Jan 2 14:41 - 14:41 (00:00)
bumbling ssh:notty 140.121.101.201 Fri Jan 2 14:37 - 14:37 (00:00)
budha ssh:notty 140.121.101.201 Fri Jan 2 14:32 - 14:32 (00:00)
bsd ssh:notty 140.121.101.201 Fri Jan 2 14:28 - 14:28 (00:00)
bruce ssh:notty 140.121.101.201 Fri Jan 2 14:23 - 14:23 (00:00)
broadway ssh:notty 140.121.101.201 Fri Jan 2 14:18 - 14:18 (00:00)
britney ssh:notty 140.121.101.201 Fri Jan 2 14:14 - 14:14 (00:00)
bridget ssh:notty 140.121.101.201 Fri Jan 2 14:09 - 14:09 (00:00)
brian ssh:notty 140.121.101.201 Fri Jan 2 14:05 - 14:05 (00:00)
brenda ssh:notty 140.121.101.201 Fri Jan 2 14:00 - 14:00 (00:00)
brandy ssh:notty 140.121.101.201 Fri Jan 2 13:56 - 13:56 (00:00)
brandi ssh:notty 140.121.101.201 Fri Jan 2 13:51 - 13:51 (00:00)
bradley ssh:notty 140.121.101.201 Fri Jan 2 13:47 - 13:47 (00:00)
boxer ssh:notty 140.121.101.201 Fri Jan 2 13:42 - 13:42 (00:00)
bond ssh:notty 140.121.101.201 Fri Jan 2 13:38 - 13:38 (00:00)
bob ssh:notty 140.121.101.201 Fri Jan 2 13:33 - 13:33 (00:00)
blue ssh:notty 140.121.101.201 Fri Jan 2 13:29 - 13:29 (00:00)
blond ssh:notty 140.121.101.201 Fri Jan 2 13:24 - 13:24 (00:00)
blacks ssh:notty 140.121.101.201 Fri Jan 2 13:19 - 13:19 (00:00)
bitch ssh:notty 140.121.101.201 Fri Jan 2 13:15 - 13:15 (00:00)
bishop ssh:notty 140.121.101.201 Fri Jan 2 13:10 - 13:10 (00:00)
bill ssh:notty 140.121.101.201 Fri Jan 2 13:01 - 13:01 (00:00)
bids ssh:notty 140.121.101.201 Fri Jan 2 12:57 - 12:57 (00:00)
bicamera ssh:notty 140.121.101.201 Fri Jan 2 12:52 - 12:52 (00:00)
bf ssh:notty 140.121.101.201 Fri Jan 2 12:48 - 12:48 (00:00)
beverly ssh:notty 140.121.101.201 Fri Jan 2 12:43 - 12:43 (00:00)
betty ssh:notty 140.121.101.201 Fri Jan 2 12:39 - 12:39 (00:00)
betsie ssh:notty 140.121.101.201 Fri Jan 2 12:34 - 12:34 (00:00)
beth ssh:notty 140.121.101.201 Fri Jan 2 12:30 - 12:30 (00:00)
beta ssh:notty 140.121.101.201 Fri Jan 2 12:25 - 12:25 (00:00)
beryl ssh:notty 140.121.101.201 Fri Jan 2 12:21 - 12:21 (00:00)
berliner ssh:notty 140.121.101.201 Fri Jan 2 12:16 - 12:16 (00:00)
berlin ssh:notty 140.121.101.201 Fri Jan 2 12:12 - 12:12 (00:00)
berkly ssh:notty 140.121.101.201 Fri Jan 2 12:07 - 12:07 (00:00)
berkeley ssh:notty 140.121.101.201 Fri Jan 2 12:02 - 12:02 (00:00)
beowulf ssh:notty 140.121.101.201 Fri Jan 2 11:58 - 11:58 (00:00)
benz ssh:notty 140.121.101.201 Fri Jan 2 11:53 - 11:53 (00:00)
benjamin ssh:notty 140.121.101.201 Fri Jan 2 11:49 - 11:49 (00:00)
ben ssh:notty 140.121.101.201 Fri Jan 2 11:44 - 11:44 (00:00)
beloved ssh:notty 140.121.101.201 Fri Jan 2 11:40 - 11:40 (00:00)
beethove ssh:notty 140.121.101.201 Fri Jan 2 11:35 - 11:35 (00:00)
beer ssh:notty 140.121.101.201 Fri Jan 2 11:31 - 11:31 (00:00)
becky ssh:notty 140.121.101.201 Fri Jan 2 11:26 - 11:26 (00:00)
beaver ssh:notty 140.121.101.201 Fri Jan 2 11:22 - 11:22 (00:00)
beauty ssh:notty 140.121.101.201 Fri Jan 2 11:17 - 11:17 (00:00)
beater ssh:notty 140.121.101.201 Fri Jan 2 11:12 - 11:12 (00:00)
bear ssh:notty 140.121.101.201 Fri Jan 2 11:08 - 11:08 (00:00)
beach ssh:notty 140.121.101.201 Fri Jan 2 11:03 - 11:03 (00:00)
b ssh:notty 140.121.101.201 Fri Jan 2 10:59 - 10:59 (00:00)
batt ssh:notty 140.121.101.201 Fri Jan 2 10:55 - 10:55 (00:00)
batman ssh:notty 140.121.101.201 Fri Jan 2 10:50 - 10:50 (00:00)
batch ssh:notty 140.121.101.201 Fri Jan 2 10:45 - 10:45 (00:00)
bassoon ssh:notty 140.121.101.201 Fri Jan 2 10:41 - 10:41 (00:00)
bass ssh:notty 140.121.101.201 Fri Jan 2 10:36 - 10:36 (00:00)
basic ssh:notty 140.121.101.201 Fri Jan 2 10:32 - 10:32 (00:00)
bartman ssh:notty 140.121.101.201 Fri Jan 2 10:27 - 10:27 (00:00)
baritone ssh:notty 140.121.101.201 Fri Jan 2 10:23 - 10:23 (00:00)
barber ssh:notty 140.121.101.201 Fri Jan 2 10:18 - 10:18 (00:00)
barbara ssh:notty 140.121.101.201 Fri Jan 2 10:14 - 10:14 (00:00)
banks ssh:notty 140.121.101.201 Fri Jan 2 10:09 - 10:09 (00:00)
bandit ssh:notty 140.121.101.201 Fri Jan 2 10:04 - 10:04 (00:00)
bananas ssh:notty 140.121.101.201 Fri Jan 2 10:00 - 10:00 (00:00)
banana ssh:notty 140.121.101.201 Fri Jan 2 09:55 - 09:55 (00:00)
balan ssh:notty 140.121.101.201 Fri Jan 2 09:51 - 09:51 (00:00)
bailey ssh:notty 140.121.101.201 Fri Jan 2 09:46 - 09:46 (00:00)
badass ssh:notty 140.121.101.201 Fri Jan 2 09:42 - 09:42 (00:00)
bacchus ssh:notty 140.121.101.201 Fri Jan 2 09:37 - 09:37 (00:00)
b ssh:notty 140.121.101.201 Fri Jan 2 09:33 - 09:33 (00:00)
azure ssh:notty 140.121.101.201 Fri Jan 2 09:28 - 09:28 (00:00)
athena ssh:notty 140.121.101.201 Fri Jan 2 09:24 - 09:24 (00:00)
asshole ssh:notty 140.121.101.201 Fri Jan 2 09:19 - 09:19 (00:00)
asm ssh:notty 140.121.101.201 Fri Jan 2 09:15 - 09:15 (00:00)
ashley ssh:notty 140.121.101.201 Fri Jan 2 09:10 - 09:10 (00:00)
asd ssh:notty 140.121.101.201 Fri Jan 2 09:06 - 09:06 (00:00)
arthur ssh:notty 140.121.101.201 Fri Jan 2 09:01 - 09:01 (00:00)
arrow ssh:notty 140.121.101.201 Fri Jan 2 08:57 - 08:57 (00:00)
armando ssh:notty 140.121.101.201 Fri Jan 2 08:52 - 08:52 (00:00)
arlene ssh:notty 140.121.101.201 Fri Jan 2 08:48 - 08:48 (00:00)
ariadne ssh:notty 140.121.101.201 Fri Jan 2 08:43 - 08:43 (00:00)
aria ssh:notty 140.121.101.201 Fri Jan 2 08:39 - 08:39 (00:00)
april ssh:notty 140.121.101.201 Fri Jan 2 08:34 - 08:34 (00:00)
apache ssh:notty 140.121.101.201 Fri Jan 2 08:30 - 08:30 (00:00)
annette ssh:notty 140.121.101.201 Fri Jan 2 08:25 - 08:25 (00:00)
anne ssh:notty 140.121.101.201 Fri Jan 2 08:21 - 08:21 (00:00)
anna ssh:notty 140.121.101.201 Fri Jan 2 08:16 - 08:16 (00:00)
ann ssh:notty 140.121.101.201 Fri Jan 2 08:12 - 08:12 (00:00)
anita ssh:notty 140.121.101.201 Fri Jan 2 08:08 - 08:08 (00:00)
angie ssh:notty 140.121.101.201 Fri Jan 2 08:03 - 08:03 (00:00)
angerine ssh:notty 140.121.101.201 Fri Jan 2 07:59 - 07:59 (00:00)
angela ssh:notty 140.121.101.201 Fri Jan 2 07:54 - 07:54 (00:00)
ane ssh:notty 140.121.101.201 Fri Jan 2 07:50 - 07:50 (00:00)
andy ssh:notty 140.121.101.201 Fri Jan 2 07:45 - 07:45 (00:00)
andromac ssh:notty 140.121.101.201 Fri Jan 2 07:41 - 07:41 (00:00)
andrew ssh:notty 140.121.101.201 Fri Jan 2 07:36 - 07:36 (00:00)
andreg ssh:notty 140.121.101.201 Fri Jan 2 07:32 - 07:32 (00:00)
andrea ssh:notty 140.121.101.201 Fri Jan 2 07:27 - 07:27 (00:00)
andre ssh:notty 140.121.101.201 Fri Jan 2 07:23 - 07:23 (00:00)
andersen ssh:notty 140.121.101.201 Fri Jan 2 07:19 - 07:19 (00:00)
anchor ssh:notty 140.121.101.201 Fri Jan 2 07:14 - 07:14 (00:00)
an ssh:notty 140.121.101.201 Fri Jan 2 07:10 - 07:10 (00:00)
analog ssh:notty 140.121.101.201 Fri Jan 2 07:05 - 07:05 (00:00)
anallise ssh:notty 140.121.101.201 Fri Jan 2 07:01 - 07:01 (00:00)
anallese ssh:notty 140.121.101.201 Fri Jan 2 06:56 - 06:56 (00:00)
analise ssh:notty 140.121.101.201 Fri Jan 2 06:52 - 06:52 (00:00)
analiese ssh:notty 140.121.101.201 Fri Jan 2 06:47 - 06:47 (00:00)
anabelle ssh:notty 140.121.101.201 Fri Jan 2 06:42 - 06:42 (00:00)
anabella ssh:notty 140.121.101.201 Fri Jan 2 06:38 - 06:38 (00:00)
anabel ssh:notty 140.121.101.201 Fri Jan 2 06:33 - 06:33 (00:00)

[aru]

换个端口

[Blask]

楼上正解

[aru]

已经足够了，除非sshd 爆出其他的安全漏洞，否则别人无法通过ssh进来

[c0878]

只要公网开了22就会被人一直尝试的 自己安全做好就行 忽略之

[besto]

怎么能允许root登录。另外key一定也要密码，切记。另外ssh 不用每次都-p。

[unfurl]

装个denyhost

[cattyhouse]

@besto 换端口了，就要加-p参数。ssh不光是用来登陆，换端口的话rsync，mosh都需要指定端口。

[xenme]

很正常，我家里路由器，天天都有人来扫弱口令~~

[21grams]

装个fail2ban，连配都不用配，默认拉黑六次密码错的ip。

[halfbloodrock]

@cattyhouse ssh 可以在.ssh/config 里定义下端口，免去每次输入痛苦。

[besto]

@cattyhouse 你可以配.ssh/config

[avichen]

你可以试试denyhosts，自动屏蔽非法用户连接sshd。

[geeklian]

@21grams
顶fail2ban

正式登陆，并不就是万无一失了，你的VPS还有可能被日志塞满.（@.@）

[novaeyoucom]

用denyhosts， 这是都是机器人自动扫描，

[henices]

请使用证书认证，禁用密码认证

[BOYPT]

扫就扫呗，关密码登录他又不可能进来。

[niklaus520]

xshell保存一下配置呗，自己电脑直接双击登录，有啥麻烦的

[uuspider]

换了端口能省很多事，ssh也可以改掉默认端口

[nerowu2010]

@besto 正解！

[maemual]

换个端口，然后在本地.ssh/config里加一下配置不就好了么。

[msg7086]

为何要用log来spam 论坛…

[gangsta]

不常见端口+fail2ban

[bellchu]

passwd -d root

然后就可以安心的睡了

[intosec]

太正常了，昨天刷ros测试，ros初始是没有防火墙规则的。刚把pppoe配好才拨上号，日志里就发现有ip在爆破ssh。一度让我怀疑国内流行的几个xx版ros镜像是不是都带后门。。。

[Chipper]

在 vps中安装一个denyhosts

[oxoxoxox]

换五位数的端口 + fail2ban
如果VPS很重要，那就再禁止root登录，然后再禁掉password登录转而用key

[oxoxoxox]

登录的话用SecureCRT保存一下ssh配置，用起来也还是蛮方便的
不过这貌似比加-p参数还多几步

[boogiefer]

推荐25#的方法，我也是用denyhosts。

[BUPTGuo]

22端口应该是有一些工具去扫的吧，换端口管用，denyhosts也挺好。我换了端口之后，denyhosts就没再增加过ip了

[lujiajing1126]

再正常不过了。。。。。。。一般都会ssh攻击root
先ssh禁用root，再禁止root从shell登陆
```
sudo passwd -dl root
```
似乎是这样，不能有-e因为root可能还需要运行crontab
然后denyhosts是基本原理，你可以用fail2ban这类的工具
以前我直接用python写了一个扫日志的。。自动加到denyhosts

[darksheen]

我在linode的vps每天也有1万多次root登录尝试，直接禁用root登录就没事了

[sangsir]

不常见端口+fail2ban，+1

[tomaer]

iptables中加上只允许你的ip段访问22端口~最简单的方法.