У меня есть почтовый сервер на Ubuntu 20.04. Вчера я установил брандмауэр UFW, который выглядит так:
root@vmi514622:~# ufw status verbose
Status: active
Logging: on (low)
Default: deny (incoming), allow (outgoing), disabled (routed)
New profiles: skip
To Action From
-- ------ ----
22/tcp LIMIT IN Anywhere
80/tcp ALLOW IN Anywhere # accept Apache
443/tcp ALLOW IN Anywhere # accept HTTPS connections
1194/udp ALLOW IN Anywhere # OpenVPN server
Anywhere DENY IN 49.88.112.75
465/tcp ALLOW IN Anywhere
587/tcp ALLOW IN Anywhere
22/tcp (v6) LIMIT IN Anywhere (v6)
80/tcp (v6) ALLOW IN Anywhere (v6) # accept Apache
443/tcp (v6) ALLOW IN Anywhere (v6) # accept HTTPS connections
1194/udp (v6) ALLOW IN Anywhere (v6) # OpenVPN server
465/tcp (v6) ALLOW IN Anywhere (v6)
587/tcp (v6) ALLOW IN Anywhere (v6)
Сегодня я получил электронное письмо с этим журналом, в котором показаны сотни попыток входа в систему как root:
################### Logwatch 7.5.2 (07/22/19) ####################
Processing Initiated: Tue Mar 2 06:25:06 2021
Date Range Processed: yesterday
( 2021-Mar-01 )
Period is day.
Detail Level of Output: 0
Type of Output/Format: mail / text
Logfiles for Host: vmi514622.contaboserver.net
##################################################################
--------------------- Amavisd-new Begin ------------------------
37 Total messages scanned ------------------ 100.00%
307.387K Total bytes scanned 314,764
======== ==================================================
37 Passed ---------------------------------- 100.00%
37 Clean passed 100.00%
======== ==================================================
37 Ham ------------------------------------- 100.00%
37 Clean passed 100.00%
======== ==================================================
---------------------- Amavisd-new End -------------------------
--------------------- pam_unix Begin ------------------------
sshd:
Authentication Failures:
root (49.88.112.112): 76 Time(s)
root (1.119.166.234): 65 Time(s)
root (119.28.140.54): 64 Time(s)
root (107.170.131.23): 63 Time(s)
root (117.211.192.70): 59 Time(s)
root (139.99.105.138): 59 Time(s)
root (167.71.102.201): 59 Time(s)
root (61.244.201.237): 58 Time(s)
root (220.248.95.178): 55 Time(s)
root (106.52.69.167): 54 Time(s)
root (218.93.12.178): 53 Time(s)
root (112.14.59.120): 50 Time(s)
root (190.144.139.235): 50 Time(s)
root (122.176.87.177): 48 Time(s)
root (162.211.226.228): 48 Time(s)
root (203.184.132.191): 48 Time(s)
root (124.105.173.17): 47 Time(s)
root (180.167.225.118): 46 Time(s)
root (222.127.97.91): 46 Time(s)
root (113.28.243.105): 45 Time(s)
root (129.226.157.108): 45 Time(s)
root (81.70.175.232): 45 Time(s)
root (152.136.99.20): 42 Time(s)
root (117.220.201.79): 40 Time(s)
root (124.239.148.87): 40 Time(s)
root (51.77.245.98): 40 Time(s)
root (152.67.165.129): 39 Time(s)
root (153.126.184.65): 39 Time(s)
unknown (163.172.162.15): 39 Time(s)
root (106.13.3.35): 38 Time(s)
root (14.161.45.187): 38 Time(s)
root (14.29.200.186): 38 Time(s)
root (49.235.65.127): 37 Time(s)
root (106.13.89.74): 36 Time(s)
root (221.181.185.148): 36 Time(s)
root (201.111.170.174): 34 Time(s)
root (221.181.185.220): 32 Time(s)
root (221.181.185.198): 28 Time(s)
root (182.254.221.82): 27 Time(s)
root (200.148.108.232): 27 Time(s)
root (150.158.175.66): 25 Time(s)
root (81.68.136.135): 25 Time(s)
root (119.45.194.63): 23 Time(s)
root (106.75.71.82): 22 Time(s)
root (222.249.173.170): 22 Time(s)
root (115.236.89.211): 20 Time(s)
root (106.54.17.221): 19 Time(s)
root (221.181.185.143): 16 Time(s)
root (221.181.185.19): 16 Time(s)
root (221.181.185.29): 16 Time(s)
root (222.187.238.87): 16 Time(s)
root (111.231.215.244): 15 Time(s)
root (115.207.182.167): 15 Time(s)
root (120.92.34.203): 15 Time(s)
root (123.127.237.41): 15 Time(s)
root (154.73.188.183): 15 Time(s)
root (160.251.9.131): 15 Time(s)
root (191.162.202.25): 15 Time(s)
root (49.232.215.196): 15 Time(s)
root (61.136.184.75): 15 Time(s)
root (117.220.203.144): 14 Time(s)
root (221.181.185.223): 14 Time(s)
root (159.89.199.80): 13 Time(s)
root (111.67.206.20): 12 Time(s)
root (152.136.149.60): 12 Time(s)
root (221.131.165.124): 12 Time(s)
root (221.181.185.135): 12 Time(s)
root (221.181.185.140): 12 Time(s)
root (221.181.185.237): 12 Time(s)
root (222.187.222.55): 12 Time(s)
root (222.187.239.31): 12 Time(s)
root (27.128.173.81): 12 Time(s)
root (68.63.236.82): 12 Time(s)
root (81.69.38.149): 12 Time(s)
root (218.14.208.90): 11 Time(s)
root (101.231.146.34): 10 Time(s)
root (119.29.155.249): 10 Time(s)
root (218.56.160.82): 10 Time(s)
root (42.192.152.72): 10 Time(s)
root (46.146.242.149): 10 Time(s)
root (221.131.165.86): 8 Time(s)
root (49.88.112.73): 8 Time(s)
root (192.144.140.20): 7 Time(s)
root (64.225.53.31): 7 Time(s)
root (129.28.175.24): 6 Time(s)
root (178.128.247.181): 6 Time(s)
mail (163.172.162.15): 5 Time(s)
root (161.97.126.91): 5 Time(s)
root (167.86.90.235): 5 Time(s)
root (186.121.204.10): 5 Time(s)
root (212.64.71.254): 5 Time(s)
root (27.155.193.17): 5 Time(s)
root (49.232.87.218): 5 Time(s)
root (68.183.156.109): 5 Time(s)
root (152.136.209.192): 3 Time(s)
unknown (159.203.29.235): 3 Time(s)
root (103.232.91.46): 2 Time(s)
unknown (141.98.80.29): 2 Time(s)
unknown (141.98.80.90): 2 Time(s)
unknown (141.98.80.93): 2 Time(s)
unknown (165.22.85.95): 2 Time(s)
unknown (195.206.105.217): 2 Time(s)
unknown (91.173.12.250): 2 Time(s)
root (115.159.90.137): 1 Time(s)
root (122.161.194.250): 1 Time(s)
root (141.98.80.89): 1 Time(s)
root (141.98.80.91): 1 Time(s)
root (141.98.80.92): 1 Time(s)
root (150.136.243.33): 1 Time(s)
root (151.106.113.19): 1 Time(s)
root (151.253.125.137): 1 Time(s)
root (152.32.252.163): 1 Time(s)
root (154.120.242.70): 1 Time(s)
root (157.230.90.18): 1 Time(s)
root (157.245.140.49): 1 Time(s)
root (167.172.233.156): 1 Time(s)
root (176.121.235.86): 1 Time(s)
root (178.33.67.12): 1 Time(s)
root (182.61.144.129): 1 Time(s)
root (187.45.103.15): 1 Time(s)
root (217.128.133.129): 1 Time(s)
root (218.103.15.177): 1 Time(s)
root (36.133.163.35): 1 Time(s)
root (45.80.153.199): 1 Time(s)
root (49.232.2.249): 1 Time(s)
root (81.68.253.95): 1 Time(s)
root (86.131.53.144): 1 Time(s)
root (89.71.241.168): 1 Time(s)
root (93.188.164.171): 1 Time(s)
unknown (141.98.80.89): 1 Time(s)
unknown (141.98.80.91): 1 Time(s)
unknown (141.98.80.92): 1 Time(s)
Invalid Users:
Unknown Account: 57 Time(s)
su:
Authentication Failures:
root(1000) -> root: 1 Time(s)
Sessions Opened:
root -> iredadmin: 1 Time(s)
root -> iredapd: 1 Time(s)
root -> netdata: 1 Time(s)
root -> root: 1 Time(s)
root -> vlado: 1 Time(s)
root -> vmail: 1 Time(s)
sudo:
Sessions Opened:
root -> root: 14 Time(s)
---------------------- pam_unix End -------------------------
--------------------- Postfix Begin ------------------------
1 Connections 1
1 Disconnections 1
32 Postscreen 32
1 TLS connections (server) 1
1 TLS connections (client) 1
**Unmatched Entries**
1 Mar 1 10:29:55 vmi514622 postfix/cleanup[1196156]: 4Dpw2p75TJzPkbt: message-id=<461606523.16.1614590994536@vmi503579.contaboserver.net>
1 Mar 1 10:36:33 vmi514622 postfix/qmgr[46456]: 4DpwBT5nq3zPkdb: from=<postmaster@tatrytec.eu>, size=4708, nrcpt=1 (queue active)
1 Mar 1 12:24:23 vmi514622 postfix/cleanup[1200919]: 4DpyZv4FZTzPkdg: message-id=<1444320002.30.1614597862581@vmi503579.contaboserver.net>
1 Mar 1 20:14:18 vmi514622 postfix/qmgr[46456]: 4Dq9152GSBzPkbt: removed
1 Mar 1 22:43:50 vmi514622 postfix/qmgr[46456]: 4DqDKW28dzzPkbt: removed
1 Mar 1 21:34:50 vmi514622 postfix/cleanup[1222763]: 4DqBp26MQdzPkbt: message-id=<948563194.49.1614630890438@vmi503579.contaboserver.net>
1 Mar 1 15:25:21 vmi514622 postfix/pipe[1207882]: 4Dq2bj19CbzPkdg: to=<postmaster@tatrytec.eu>, relay=dovecot, delay=0.13, delays=0.01/0.01/0/0.11, dsn=2.0.0, status=sent (delivered via dovecot service)
1 Mar 1 10:24:26 vmi514622 postfix/pipe[1195937]: 4DpvwT3ynvzPkdB: to=<postmaster@tatrytec.eu>, relay=dovecot, delay=0.48, delays=0.02/0.04/0/0.42, dsn=2.0.0, status=sent (delivered via dovecot service)
1 Mar 1 03:30:06 vmi514622 postfix/cleanup[1177579]: 4DpkkQ5bHKzPkdg: message-id=<4DpkkM0BsnzPkdc@vmi514622.contaboserver.net>
1 Mar 1 11:20:47 vmi514622 postfix/pipe[1198348]: 4Dpx9W0njGzPkdg: to=<postmaster@tatrytec.eu>, relay=dovecot, delay=0.17, delays=0.01/0.02/0/0.14, dsn=2.0.0, status=sent (delivered via dovecot service)
1 Mar 1 21:25:24 vmi514622 postfix/qmgr[46456]: 4DqBb81DvVzPkdg: removed
1 Mar 1 16:50:19 vmi514622 postfix/cleanup[1211187]: 4Dq4Tl4g7GzPkbt: message-id=<2100803903.33.1614613818814@vmi503579.contaboserver.net>
1 Mar 1 20:55:33 vmi514622 postfix/qmgr[46456]: 4Dq9wj3HY7zPkbt: from=<postmaster@tatrytec.eu>, size=6266, nrcpt=1 (queue active)
1 Mar 1 06:26:20 vmi514622 postfix/cleanup[1185400]: 4Dppdm1cvrzPkdj: message-id=<4Dppdh3zd9zPkdg@vmi514622.contaboserver.net>
1 Mar 1 12:25:09 vmi514622 postfix/cleanup[1200919]: 4Dpybn49tpzPkdg: message-id=<348486365.31.1614597909063@vmi503579.contaboserver.net>
1 Mar 1 21:49:08 vmi514622 postfix/qmgr[46456]: 4DqC6V1qxxzPkbt: removed
1 Mar 1 21:34:51 vmi514622 postfix/pipe[1222768]: 4DqBp32pZTzPkdg: to=<postmaster@tatrytec.eu>, relay=dovecot, delay=0.05, delays=0.01/0.01/0/0.03, dsn=2.0.0, status=sent (delivered via dovecot service)
1 Mar 1 11:26:52 vmi514622 postfix/qmgr[46456]: 4DpxJX12dvzPkbt: removed
1 Mar 1 12:25:09 vmi514622 postfix/cleanup[1200919]: 4Dpybn2NYMzPkbt: message-id=<348486365.31.1614597909063@vmi503579.contaboserver.net>
1 Mar 1 10:25:03 vmi514622 postfix/qmgr[46456]: 4DpvxC2tj6zPkdH: from=<postmaster@tatrytec.eu>, size=7438, nrcpt=1 (queue active)
1 Mar 1 21:49:06 vmi514622 postfix/cleanup[1223355]: 4DqC6V1qxxzPkbt: message-id=<1666648692.51.1614631745669@vmi503579.contaboserver.net>
1 Mar 1 22:43:43 vmi514622 postfix/qmgr[46456]: 4DqDKW28dzzPkbt: from=<postmaster@tatrytec.eu>, size=6124, nrcpt=1 (queue active)
1 Mar 1 10:25:03 vmi514622 postfix/qmgr[46456]: 4DpvxC2tj6zPkdH: removed
1 Mar 1 04:00:08 vmi514622 postfix/cleanup[1178958]: 4DplP44YsczPkdg: message-id=<4DplP2288zzPkdg@vmi514622.contaboserver.net>
1 Mar 1 10:54:17 vmi514622 postfix/cleanup[1197185]: 4DpwZx1CnxzPkbt: message-id=<1674123124.20.1614592456622@vmi503579.contaboserver.net>
1 Mar 1 20:55:34 vmi514622 postfix/qmgr[46456]: 4Dq9wk33zVzPkdg: removed
1 Mar 1 20:45:09 vmi514622 postfix/cleanup[1220774]: 4Dq9hj1vh8zPkbt: message-id=<580959423.41.1614627908734@vmi503579.contaboserver.net>
1 Mar 1 11:20:47 vmi514622 postfix/qmgr[46456]: 4Dpx9T2Y3BzPkbt: removed
1 Mar 1 20:45:10 vmi514622 postfix/qmgr[46456]: 4Dq9hk16kBzPkdg: removed
1 Mar 1 11:25:09 vmi514622 postfix/cleanup[1198541]: 4DpxGY2lHyzPkbt: message-id=<88426377.23.1614594308967@vmi503579.contaboserver.net>
1 Mar 1 11:25:52 vmi514622 postfix/qmgr[46456]: 4DpxHN45bqzPkdg: removed
1 Mar 1 10:54:17 vmi514622 postfix/qmgr[46456]: 4DpwZx1CnxzPkbt: removed
1 Mar 1 16:50:20 vmi514622 postfix/qmgr[46456]: 4Dq4Tl4g7GzPkbt: removed
1 Mar 1 11:20:47 vmi514622 postfix/qmgr[46456]: 4Dpx9W0njGzPkdg: from=<postmaster@tatrytec.eu>, size=23083, nrcpt=1 (queue active)
1 Mar 1 04:01:02 vmi514622 postfix/qmgr[46456]: 4DplQ65lDTzPkdg: from=<root@vmi514622.contaboserver.net>, size=855, nrcpt=1 (queue active)
1 Mar 1 10:25:02 vmi514622 postfix/qmgr[46456]: 4DpvxB4jmRzPkbt: from=<postmaster@tatrytec.eu>, size=6055, nrcpt=1 (queue active)
1 Mar 1 12:25:09 vmi514622 postfix/qmgr[46456]: 4Dpybn2NYMzPkbt: from=<postmaster@tatrytec.eu>, size=1318, nrcpt=1 (queue active)
1 Mar 1 17:37:06 vmi514622 postfix/qmgr[46456]: 4Dq5Wk2KFMzPkdg: from=<vladimir.camaj@gmail.com>, size=96198, nrcpt=1 (queue active)
1 Mar 1 04:01:04 vmi514622 postfix/qmgr[46456]: 4DplQ80YwqzPkdc: from=<root@vmi514622.contaboserver.net>, size=2223, nrcpt=1 (queue active)
1 Mar 1 17:34:49 vmi514622 postfix/pipe[1213041]: 4Dq5T474YtzPkdg: to=<postmaster@tatrytec.eu>, relay=dovecot, delay=0.1, delays=0.03/0.02/0/0.05, dsn=2.0.0, status=sent (delivered via dovecot service)
1 Mar 1 21:49:08 vmi514622 postfix/qmgr[46456]: 4DqC6X1tg2zPkdg: from=<postmaster@tatrytec.eu>, size=7651, nrcpt=1 (queue active)
1 Mar 1 06:26:20 vmi514622 postfix/local[1185425]: 4Dppdm1TB7zPkdc: to=<root@vmi514622.contaboserver.net>, relay=local, delay=0.03, delays=0.01/0.01/0/0.01, dsn=2.0.0, status=sent (forwarded as 4Dppdm1cvrzPkdj)
1 Mar 1 04:01:04 vmi514622 postfix/cleanup[1178958]: 4DplQ80YwqzPkdc: message-id=<4DplQ65lDTzPkdg@vmi514622.contaboserver.net>
1 Mar 1 20:45:10 vmi514622 postfix/cleanup[1220774]: 4Dq9hk16kBzPkdg: message-id=<580959423.41.1614627908734@vmi503579.contaboserver.net>
1 Mar 1 11:36:23 vmi514622 postfix/pipe[1198903]: 4DpxWV6dHtzPkdg: to=<postmaster@tatrytec.eu>, relay=dovecot, delay=0.08, delays=0.01/0.02/0/0.06, dsn=2.0.0, status=sent (delivered via dovecot service)
1 Mar 1 11:18:37 vmi514622 postfix/pipe[1198261]: 4Dpx711q91zPkdg: to=<postmaster@tatrytec.eu>, relay=dovecot, delay=0.16, delays=0.03/0.04/0/0.09, dsn=2.0.0, status=sent (delivered via dovecot service)
1 Mar 1 11:20:45 vmi514622 postfix/qmgr[46456]: 4Dpx9T2Y3BzPkbt: from=<postmaster@tatrytec.eu>, size=21700, nrcpt=1 (queue active)
1 Mar 1 10:41:00 vmi514622 postfix/pipe[1196674]: 4DpwHc5S2xzPkdg: to=<postmaster@tatrytec.eu>, relay=dovecot, delay=0.07, delays=0.01/0.01/0/0.05, dsn=2.0.0, status=sent (delivered via dovecot service)
1 Mar 1 12:09:26 vmi514622 postfix/pipe[1200352]: 4DpyFf5PhZzPkdg: to=<postmaster@tatrytec.eu>, relay=dovecot, delay=0.15, delays=0.01/0.02/0/0.12, dsn=2.0.0, status=sent (delivered via dovecot service)
1 Mar 1 17:34:49 vmi514622 postfix/qmgr[46456]: 4Dq5Sy23z9zPkbt: removed
1 Mar 1 11:35:36 vmi514622 postfix/cleanup[1198898]: 4DpxVc5dHhzPkbt: message-id=<1508325983.26.1614594936339@vmi503579.contaboserver.net>
1 Mar 1 11:36:22 vmi514622 postfix/cleanup[1198898]: 4DpxWV3rTNzPkbt: message-id=<2063571191.27.1614594982264@vmi503579.contaboserver.net>
1 Mar 1 20:45:10 vmi514622 postfix/qmgr[46456]: 4Dq9hj1vh8zPkbt: removed
1 Mar 1 04:00:06 vmi514622 postfix/pickup[1177877]: 4DplP2288zzPkdg: uid=0 from=<root>
1 Mar 1 10:30:29 vmi514622 postfix/cleanup[1196156]: 4Dpw3T3XCYzPkbt: message-id=<1109215425.17.1614591029166@vmi503579.contaboserver.net>
1 Mar 1 10:28:10 vmi514622 postfix/cleanup[1196074]: 4Dpw0p0QkkzPkbt: message-id=<1610853501.15.1614590889586@vmi503579.contaboserver.net>
1 Mar 1 12:20:56 vmi514622 postfix/qmgr[46456]: 4DpyVw3JlSzPkdg: removed
1 Mar 1 17:37:05 vmi514622 postfix/cleanup[1213164]: 4Dq5Wj33ZnzPkbt: message-id=<CACBSb5ZvgNzda5Bwz_UKqsvBpDvreak4g+UgwCTfQrVSnLrW=g@mail.gmail.com>
1 Mar 1 04:01:04 vmi514622 postfix/qmgr[46456]: 4DplQ80YwqzPkdc: removed
1 Mar 1 04:00:08 vmi514622 postfix/qmgr[46456]: 4DplP2288zzPkdg: removed
1 Mar 1 06:26:16 vmi514622 postfix/cleanup[1185400]: 4Dppdh3zd9zPkdg: message-id=<4Dppdh3zd9zPkdg@vmi514622.contaboserver.net>
1 Mar 1 12:20:56 vmi514622 postfix/qmgr[46456]: 4DpyVp4G02zPkbt: removed
1 Mar 1 20:55:34 vmi514622 postfix/qmgr[46456]: 4Dq9wk33zVzPkdg: from=<postmaster@tatrytec.eu>, size=7649, nrcpt=1 (queue active)
1 Mar 1 12:24:23 vmi514622 postfix/qmgr[46456]: 4DpyZv4FZTzPkdg: from=<postmaster@tatrytec.eu>, size=6965, nrcpt=1 (queue active)
1 Mar 1 22:43:43 vmi514622 postfix/cleanup[1225466]: 4DqDKW28dzzPkbt: message-id=<1333430951.52.1614635022798@vmi503579.contaboserver.net>
1 Mar 1 04:00:06 vmi514622 postfix/cleanup[1178958]: 4DplP2288zzPkdg: message-id=<4DplP2288zzPkdg@vmi514622.contaboserver.net>
1 Mar 1 03:30:03 vmi514622 postfix/cleanup[1177579]: 4DpkkM0BsnzPkdc: message-id=<4DpkkM0BsnzPkdc@vmi514622.contaboserver.net>
1 Mar 1 11:20:47 vmi514622 postfix/qmgr[46456]: 4Dpx9W0njGzPkdg: removed
1 Mar 1 10:28:10 vmi514622 postfix/qmgr[46456]: 4Dpw0p0QkkzPkbt: removed
1 Mar 1 11:18:35 vmi514622 postfix/cleanup[1198256]: 4Dpx6z6dVszPkbt: message-id=<1098013570.21.1614593915103@vmi503579.contaboserver.net>
1 Mar 1 04:01:02 vmi514622 postfix/cleanup[1178958]: 4DplQ65lDTzPkdg: message-id=<4DplQ65lDTzPkdg@vmi514622.contaboserver.net>
1 Mar 1 03:30:06 vmi514622 postfix/cleanup[1177579]: 4DpkkQ5nLqzPkdj: message-id=<4DpkkM0BsnzPkdc@vmi514622.contaboserver.net>
1 Mar 1 11:36:23 vmi514622 postfix/qmgr[46456]: 4DpxWV6dHtzPkdg: removed
1 Mar 1 10:28:10 vmi514622 postfix/cleanup[1196074]: 4Dpw0p6CRPzPkdM: message-id=<1610853501.15.1614590889586@vmi503579.contaboserver.net>
1 Mar 1 17:37:06 vmi514622 postfix/pipe[1213175]: 4Dq5Wk2KFMzPkdg: to=<postmaster@tatrytec.eu>, relay=dovecot, delay=0.07, delays=0.01/0.01/0/0.04, dsn=2.0.0, status=sent (delivered via dovecot service)
1 Mar 1 11:25:52 vmi514622 postfix/cleanup[1198541]: 4DpxHN1Y3nzPkbt: message-id=<1629541888.24.1614594351875@vmi503579.contaboserver.net>
1 Mar 1 10:24:25 vmi514622 postfix/qmgr[46456]: 4DpvwS4Jv6zPkbt: removed
1 Mar 1 15:25:10 vmi514622 postfix/qmgr[46456]: 4Dq2bV1DXMzPkbt: from=<postmaster@tatrytec.eu>, size=6101, nrcpt=1 (queue active)
1 Mar 1 10:41:00 vmi514622 postfix/qmgr[46456]: 4DpwHc24GqzPkbt: removed
1 Mar 1 20:45:10 vmi514622 postfix/smtp[1220779]: 4Dq9hk16kBzPkdg: to=<vladimir.camaj@gmail.com>, relay=gmail-smtp-in.l.google.com[108.177.126.27]:25, delay=0.57, delays=0.01/0.02/0.13/0.41, dsn=2.0.0, status=sent (250 2.0.0 OK 1614627910 i12si11266553ejr.344 - gsmtp)
1 Mar 1 09:04:18 vmi514622 postfix/pipe[1192514]: 4Dpt8227gKzPkcx: to=<postmaster@tatrytec.eu>, relay=dovecot, delay=0.1, delays=0.01/0.01/0/0.08, dsn=2.0.0, status=sent (delivered via dovecot service)
1 Mar 1 04:01:04 vmi514622 postfix/qmgr[46456]: 4DplQ65lDTzPkdg: removed
1 Mar 1 03:30:03 vmi514622 postfix/qmgr[46456]: 4DpkkM0BsnzPkdc: from=<root@vmi514622.contaboserver.net>, size=1299, nrcpt=1 (queue active)
1 Mar 1 11:25:09 vmi514622 postfix/pipe[1198546]: 4DpxGY5ZdtzPkdg: to=<postmaster@tatrytec.eu>, relay=dovecot, delay=0.05, delays=0.01/0.01/0/0.04, dsn=2.0.0, status=sent (delivered via dovecot service)
1 Mar 1 10:36:33 vmi514622 postfix/pipe[1196443]: 4DpwBT5nq3zPkdb: to=<postmaster@tatrytec.eu>, relay=dovecot, delay=0.14, delays=0.02/0.02/0/0.11, dsn=2.0.0, status=sent (delivered via dovecot service)
1 Mar 1 11:20:45 vmi514622 postfix/cleanup[1198341]: 4Dpx9T2Y3BzPkbt: message-id=<457956705.22.1614594044942@vmi503579.contaboserver.net>
1 Mar 1 23:12:41 vmi514622 postfix/qmgr[46456]: 4DqDyq4pnFzPkbt: removed
1 Mar 1 23:12:35 vmi514622 postfix/qmgr[46456]: 4DqDyq4pnFzPkbt: from=<postmaster@tatrytec.eu>, size=6163, nrcpt=1 (queue active)
1 Mar 1 10:41:00 vmi514622 postfix/qmgr[46456]: 4DpwHc24GqzPkbt: from=<postmaster@tatrytec.eu>, size=3324, nrcpt=1 (queue active)
1 Mar 1 12:20:56 vmi514622 postfix/cleanup[1200775]: 4DpyVw3JlSzPkdg: message-id=<991290979.29.1614597650185@vmi503579.contaboserver.net>
1 Mar 1 20:45:10 vmi514622 postfix/qmgr[46456]: 4Dq9hk16kBzPkdg: from=<postmaster@tatrytec.eu>, size=1968, nrcpt=1 (queue active)
1 Mar 1 10:25:03 vmi514622 postfix/pipe[1195937]: 4DpvxC2tj6zPkdH: to=<postmaster@tatrytec.eu>, relay=dovecot, delay=0.05, delays=0/0.02/0/0.03, dsn=2.0.0, status=sent (delivered via dovecot service)
1 Mar 1 12:20:50 vmi514622 postfix/cleanup[1200775]: 4DpyVp4G02zPkbt: message-id=<991290979.29.1614597650185@vmi503579.contaboserver.net>
1 Mar 1 12:09:14 vmi514622 postfix/qmgr[46456]: 4DpyFQ6K9pzPkbt: from=<postmaster@tatrytec.eu>, size=3324, nrcpt=1 (queue active)
1 Mar 1 10:30:30 vmi514622 postfix/qmgr[46456]: 4Dpw3V0k5lzPkdW: removed
1 Mar 1 11:26:52 vmi514622 postfix/cleanup[1198541]: 4DpxJX3v27zPkdg: message-id=<495459168.25.1614594411827@vmi503579.contaboserver.net>
1 Mar 1 20:55:34 vmi514622 postfix/pipe[1221178]: 4Dq9wk33zVzPkdg: to=<postmaster@tatrytec.eu>, relay=dovecot, delay=0.13, delays=0.01/0.02/0/0.1, dsn=2.0.0, status=sent (delivered via dovecot service)
1 Mar 1 15:25:21 vmi514622 postfix/qmgr[46456]: 4Dq2bj19CbzPkdg: from=<postmaster@tatrytec.eu>, size=7458, nrcpt=1 (queue active)
1 Mar 1 12:09:26 vmi514622 postfix/cleanup[1200333]: 4DpyFf5PhZzPkdg: message-id=<518461345.28.1614596954418@vmi503579.contaboserver.net>
1 Mar 1 23:12:41 vmi514622 postfix/qmgr[46456]: 4DqDyx2nnczPkdg: removed
1 Mar 1 11:26:52 vmi514622 postfix/pipe[1198546]: 4DpxJX3v27zPkdg: to=<postmaster@tatrytec.eu>, relay=dovecot, delay=0.05, delays=0/0.02/0/0.03, dsn=2.0.0, status=sent (delivered via dovecot service)
1 Mar 1 09:04:18 vmi514622 postfix/qmgr[46456]: 4Dpt813WSdzPkbt: removed
1 Mar 1 04:00:08 vmi514622 postfix/qmgr[46456]: 4DplP43wYCzPkdc: from=<root@vmi514622.contaboserver.net>, size=2769, nrcpt=1 (queue active)
1 Mar 1 12:24:23 vmi514622 postfix/pipe[1200924]: 4DpyZv4FZTzPkdg: to=<postmaster@tatrytec.eu>, relay=dovecot, delay=0.07, delays=0.01/0.02/0/0.04, dsn=2.0.0, status=sent (delivered via dovecot service)
1 Mar 1 06:26:20 vmi514622 postfix/qmgr[46456]: 4Dppdm1TB7zPkdc: from=<root@vmi514622.contaboserver.net>, size=32737, nrcpt=1 (queue active)
1 Mar 1 21:20:25 vmi514622 postfix/qmgr[46456]: 4DqBTN6l1SzPkdg: removed
1 Mar 1 11:35:37 vmi514622 postfix/qmgr[46456]: 4DpxVc5dHhzPkbt: removed
1 Mar 1 16:50:20 vmi514622 postfix/cleanup[1211187]: 4Dq4Tm5kDYzPkdg: message-id=<2100803903.33.1614613818814@vmi503579.contaboserver.net>
1 Mar 1 10:29:55 vmi514622 postfix/qmgr[46456]: 4Dpw2p75TJzPkbt: removed
1 Mar 1 03:30:06 vmi514622 postfix/qmgr[46456]: 4DpkkM0BsnzPkdc: removed
1 Mar 1 12:24:23 vmi514622 postfix/cleanup[1200919]: 4DpyZv01YCzPkbt: message-id=<1444320002.30.1614597862581@vmi503579.contaboserver.net>
1 Mar 1 10:30:30 vmi514622 postfix/qmgr[46456]: 4Dpw3V0k5lzPkdW: from=<postmaster@tatrytec.eu>, size=6965, nrcpt=1 (queue active)
1 Mar 1 22:43:50 vmi514622 postfix/cleanup[1225466]: 4DqDKf3H3CzPkdg: message-id=<1333430951.52.1614635022798@vmi503579.contaboserver.net>
1 Mar 1 10:36:33 vmi514622 postfix/qmgr[46456]: 4DpwBT0K56zPkbt: from=<postmaster@tatrytec.eu>, size=3325, nrcpt=1 (queue active)
1 Mar 1 20:14:17 vmi514622 postfix/qmgr[46456]: 4Dq9152GSBzPkbt: from=<postmaster@tatrytec.eu>, size=6271, nrcpt=1 (queue active)
1 Mar 1 10:24:24 vmi514622 postfix/qmgr[46456]: 4DpvwS4Jv6zPkbt: from=<postmaster@tatrytec.eu>, size=6054, nrcpt=1 (queue active)
1 Mar 1 06:26:20 vmi514622 postfix/pipe[1185426]: 4Dppdm1cvrzPkdj: to=<postmaster@tatrytec.eu>, orig_to=<root@vmi514622.contaboserver.net>, relay=dovecot, delay=0.14, delays=0/0.01/0/0.12, dsn=2.0.0, status=sent (delivered via dovecot service)
1 Mar 1 23:12:41 vmi514622 postfix/pipe[1226661]: 4DqDyx2nnczPkdg: to=<postmaster@tatrytec.eu>, relay=dovecot, delay=0.05, delays=0/0.01/0/0.04, dsn=2.0.0, status=sent (delivered via dovecot service)
1 Mar 1 06:26:16 vmi514622 postfix/qmgr[46456]: 4Dppdh3zd9zPkdg: from=<root@vmi514622.contaboserver.net>, size=31358, nrcpt=1 (queue active)
1 Mar 1 10:30:30 vmi514622 postfix/qmgr[46456]: 4Dpw3T3XCYzPkbt: removed
1 Mar 1 21:20:24 vmi514622 postfix/qmgr[46456]: 4DqBTN6l1SzPkdg: from=<postmaster@tatrytec.eu>, size=7484, nrcpt=1 (queue active)
1 Mar 1 10:41:00 vmi514622 postfix/qmgr[46456]: 4DpwHc5S2xzPkdg: removed
1 Mar 1 04:00:06 vmi514622 postfix/qmgr[46456]: 4DplP2288zzPkdg: from=<root@vmi514622.contaboserver.net>, size=1389, nrcpt=1 (queue active)
1 Mar 1 21:34:51 vmi514622 postfix/qmgr[46456]: 4DqBp32pZTzPkdg: from=<postmaster@tatrytec.eu>, size=7647, nrcpt=1 (queue active)
1 Mar 1 17:34:49 vmi514622 postfix/cleanup[1213036]: 4Dq5T474YtzPkdg: message-id=<1185830453.37.1614616481862@vmi503579.contaboserver.net>
1 Mar 1 06:26:16 vmi514622 postfix/pickup[1182116]: 4Dppdh3zd9zPkdg: uid=0 from=<root>
1 Mar 1 03:30:06 vmi514622 postfix/local[1177589]: 4DpkkQ5bHKzPkdg: to=<root@vmi514622.contaboserver.net>, relay=local, delay=0.03, delays=0.01/0.01/0/0.01, dsn=2.0.0, status=sent (forwarded as 4DpkkQ5nLqzPkdj)
1 Mar 1 03:30:07 vmi514622 postfix/pipe[1177591]: 4DpkkQ5nLqzPkdj: to=<postmaster@tatrytec.eu>, orig_to=<root@vmi514622.contaboserver.net>, relay=dovecot, delay=0.19, delays=0/0.01/0/0.18, dsn=2.0.0, status=sent (delivered via dovecot service)
1 Mar 1 04:01:04 vmi514622 postfix/qmgr[46456]: 4DplQ80f1PzPkdj: from=<root@vmi514622.contaboserver.net>, size=2383, nrcpt=1 (queue active)
1 Mar 1 10:28:10 vmi514622 postfix/qmgr[46456]: 4Dpw0p6CRPzPkdM: from=
---------------------- Postfix End -------------------------
--------------------- rsyslogd Begin ------------------------
Rsyslogd actions suspended:
action-6-builtin:omfile (builtin:omfile): 15531 Times
Rsyslogd actions resumed
action-6-builtin:omfile (builtin:omfile): 14120 Times
**** Unmatched entries ****
file '/var/log/fail2ban.log': open error: Permission denied [v8.2001.0 try https://www.rsyslog.com/e/2433 ] : 1 Times
---------------------- rsyslogd End -------------------------
Я не уверен, но где-то читал, что UFW может блокировать номер неудачных попыток входа с одного IP в течение 30 секунд. Не знаю, но в журнале действительно сотни попыток. Или это журнал того времени, когда еще не был установлен фаервол? Ставил около 12 часов назад. Правильно ли мой брандмауэр? Большое спасибо за помощь.
Хорошая причина для установки из файлов .deb, даже если вы не получите обновления автоматически, как если бы вы использовали ppa! Да, некоторые рассматривают отсутствие обновлений как неудачу, особенно если обновления безопасности будут выпущены для пакета позже. Но в этом случае есть то четкое предупреждение, что установка pop ppa может повлиять на всю вашу систему!
-121--910048-По умолчанию при установке на Ubuntu нет корневого пароля, поэтому, если он не был набором, его никогда не было (изначально это недопустимый пароль, который невозможно ввести).
Если был установлен пароль root, он был установлен после установки (и они могут быть разными; это зависит от вас, так как при установке установлен только пароль пользователя ( с правами sudo
, так что пользователь имеет возможность добавлять пароль root ).
В ваших обстоятельствах, я бы nuke вашу систему и начать снова... как вы не можете действительно знать, что было сделано (если они какие-то хорошие, они сделают треки трудно следовать для вас, я ставлю).
Вы можете создать свои имена входа, чтобы они требовали ключей (а не паролей), однако я все равно начну заново с повторной установки.
-121--909218- Это обычный шум www
. Если вы используете надежные пароли, беспокоиться не о чем.
Однако необходимо принять некоторые меры, чтобы снизить уровень шума и сделать ваш сервер более безопасным:
root
login, а не войдите в систему как обычный пользователь и используйте sudo
. пароль
и используйте pubkey
- только аутентификацию ssh
на более высокий номер порта (убедитесь, что он разрешен в брандмауэре). fail2ban
, по крайней мере, для задержки этих попыток. См. также дополнительные сведения .
ufw limit
и fail2ban
приятно иметь, но злоумышленники знают об этих ограничениях и предпринимают столько же попыток, сколько они не будут заблокированы. Обычно эти случайные атаки совершаются через некоторые ботнет случайных серверов, принятых на себя, поэтому эффект ограничения попыток на один IP-адрес ограничен.