Мой сервер Винишка подвергается нападению?
Я установил винишко на LUbuntu 18.04, и настроил и запустил мой сервер винишка согласно https://askubuntu.com/a/530196/1471, не понимая то, что означают команды:
$ export DISPLAY=:0
$ gsettings set org.gnome.Vino enabled true # although fails, it doesn't matter
No such key “enabled”
$ gsettings set org.gnome.Vino prompt-enabled false
$ gsettings set org.gnome.Vino require-encryption false
$ /usr/lib/vino/vino-server
От ifconfig и выходной сигнал запуска сервера, я нашел, что внутренний IP сервера 192.168.1.3, и порт 5900. Я соединился с сервером от средства просмотра RealVNC VNC на моем телефоне на базе Android в той же сети WIFI, и аутентификация, которую меня только попросили обеспечить, была паролем для входа в систему в мою Ubuntu. Наша сеть Wi-Fi была настроена предыдущим арендатором, и ISP является Verizon FIOS, и нет никакого специального набора об этом.
В контролирующем выходном сигнале сервера (см. ниже), я могу только предположить это android-c28b29b650f6548c.home клиент на моем телефоне на базе Android, но я не знаю кто клиенты 46.101.184.149, zg-0817a-64.stretchoid.com, 196.52.43.118, и scan-06.shadowserver.org принадлежите, кроме нахождения следующего:
- https://www.abuseipdb.com/check/46.101.184.149
- https://www.abuseipdb.com/check/107.170.227.141
- https://www.abuseipdb.com/check/196.52.43.118
- https://www.abuseipdb.com/whois/216.218.206.67
Вопросы:
Это корректно, что к моему серверу винишка получают доступ от некоторых опасных клиентов кроме клиента на моем телефоне на базе Android?
Я не попытался сделать какую-либо вещь явно для предоставления доступа к моему серверу винишка доступным для Интернета (или я не знаю, что сделал это), поэтому как эти клиенты могли найти и подключить мой сервер из Интернета?
Как я могу проверить свою Ubuntu, чтобы видеть, нанесли ли они некоторый ущерб?
Что я могу сделать для безопасного использования моего сервера VNC при необходимости?
Спасибо.
$ /usr/lib/vino/vino-server
(vino-server:32529): dbind-WARNING **: 19:44:12.185: Error retrieving accessibility bus address: org.freedesktop.DBus.Error.ServiceUnknown: The name org.a11y.Bus was not provided by any .service files
19/08/2018 07:44:12 PM Autoprobing TCP port in (all) network interface
19/08/2018 07:44:12 PM Listening IPv6://[::]:5900
19/08/2018 07:44:12 PM Listening IPv4://0.0.0.0:5900
19/08/2018 07:44:12 PM Autoprobing selected port 5900
19/08/2018 07:44:12 PM Advertising security type: 'TLS' (18)
19/08/2018 07:44:12 PM Re-binding socket to listen for VNC connections on TCP port 5900 in (all) interface
19/08/2018 07:44:12 PM Listening IPv6://[::]:5900
19/08/2018 07:44:12 PM Listening IPv4://0.0.0.0:5900
19/08/2018 07:44:12 PM Clearing securityTypes
19/08/2018 07:44:12 PM Advertising security type: 'TLS' (18)
19/08/2018 07:44:12 PM Clearing securityTypes
19/08/2018 07:44:12 PM Advertising security type: 'TLS' (18)
19/08/2018 07:44:12 PM Advertising authentication type: 'No Authentication' (1)
19/08/2018 07:44:12 PM Re-binding socket to listen for VNC connections on TCP port 5900 in (all) interface
19/08/2018 07:44:12 PM Listening IPv6://[::]:5900
19/08/2018 07:44:12 PM Listening IPv4://0.0.0.0:5900
19/08/2018 07:44:12 PM Clearing securityTypes
19/08/2018 07:44:12 PM Clearing authTypes
19/08/2018 07:44:12 PM Advertising security type: 'TLS' (18)
19/08/2018 07:44:12 PM Advertising authentication type: 'VNC Authentication' (2)
19/08/2018 07:44:12 PM Clearing securityTypes
19/08/2018 07:44:12 PM Clearing authTypes
19/08/2018 07:44:12 PM Advertising security type: 'TLS' (18)
19/08/2018 07:44:12 PM Advertising authentication type: 'VNC Authentication' (2)
19/08/2018 07:44:12 PM Advertising security type: 'VNC Authentication' (2)
19/08/2018 07:44:17 PM [IPv4] Got connection from client android-c28b29b650f6548c.home
19/08/2018 07:44:17 PM other clients:
19/08/2018 07:44:17 PM Client Protocol Version 3.7
19/08/2018 07:44:17 PM Advertising security type 18
19/08/2018 07:44:17 PM Advertising security type 2
19/08/2018 07:44:17 PM Client returned security type 2
** (vino-server:32529): WARNING **: 19:44:28.888: VNC authentication failure from 'android-c28b29b650f6548c.home'
19/08/2018 07:44:28 PM rfbAuthPasswordChecked: password check failed
19/08/2018 07:44:28 PM Client android-c28b29b650f6548c.home gone
19/08/2018 07:44:28 PM Statistics:
19/08/2018 07:44:28 PM framebuffer updates 0, rectangles 0, bytes 0
19/08/2018 07:44:30 PM [IPv4] Got connection from client android-c28b29b650f6548c.home
19/08/2018 07:44:30 PM other clients:
19/08/2018 07:44:30 PM Client Protocol Version 3.7
19/08/2018 07:44:30 PM Advertising security type 18
19/08/2018 07:44:30 PM Advertising security type 2
19/08/2018 07:44:30 PM Client returned security type 2
** (vino-server:32529): WARNING **: 19:44:40.531: Deferring authentication of 'android-c28b29b650f6548c.home' for 5 seconds
19/08/2018 07:44:45 PM rfbProcessClientNormalMessage: ignoring unknown encoding type 22
19/08/2018 07:44:45 PM rfbProcessClientNormalMessage: ignoring unknown encoding type 21
19/08/2018 07:44:45 PM rfbProcessClientNormalMessage: ignoring unknown encoding type 15
19/08/2018 07:44:45 PM rfbProcessClientNormalMessage: ignoring unknown encoding type -314
19/08/2018 07:44:45 PM Enabling NewFBSize protocol extension for client android-c28b29b650f6548c.home
19/08/2018 07:44:45 PM Pixel format for client android-c28b29b650f6548c.home:
19/08/2018 07:44:45 PM 8 bpp, depth 6
19/08/2018 07:44:45 PM true colour: max r 3 g 3 b 3, shift r 4 g 2 b 0
19/08/2018 07:44:45 PM Pixel format for client android-c28b29b650f6548c.home:
19/08/2018 07:44:45 PM 32 bpp, depth 24, little endian
19/08/2018 07:44:45 PM true colour: max r 255 g 255 b 255, shift r 16 g 8 b 0
19/08/2018 07:44:45 PM no translation needed
Gtk-Message: 20:43:41.511: GtkDialog mapped without a transient parent. This is discouraged.
Gtk-Message: 20:43:44.339: GtkDialog mapped without a transient parent. This is discouraged.
Gtk-Message: 20:43:52.072: GtkDialog mapped without a transient parent. This is discouraged.
19/08/2018 10:39:57 PM [IPv4] Got connection from client 46.101.184.149
19/08/2018 10:39:57 PM other clients:
19/08/2018 10:39:57 PM android-c28b29b650f6548c.home
19/08/2018 10:39:57 PM Client Protocol Version 3.3
** (vino-server:32529): WARNING **: 22:39:57.238: VNC authentication failure from '46.101.184.149'
19/08/2018 10:39:57 PM rfbAuthPasswordChecked: password check failed
19/08/2018 10:39:57 PM Client 46.101.184.149 gone
19/08/2018 10:39:57 PM Statistics:
19/08/2018 10:39:57 PM framebuffer updates 0, rectangles 0, bytes 0
19/08/2018 10:43:41 PM [IPv4] Got connection from client 46.101.184.149
19/08/2018 10:43:41 PM other clients:
19/08/2018 10:43:41 PM android-c28b29b650f6548c.home
19/08/2018 10:43:41 PM Client Protocol Version 3.3
** (vino-server:32529): WARNING **: 22:43:41.812: Deferring authentication of '46.101.184.149' for 5 seconds
** (vino-server:32529): WARNING **: 22:43:47.449: VNC authentication failure from '46.101.184.149'
19/08/2018 10:43:47 PM rfbAuthPasswordChecked: password check failed
19/08/2018 10:47:27 PM [IPv4] Got connection from client 46.101.184.149
19/08/2018 10:47:27 PM other clients:
19/08/2018 10:47:27 PM 46.101.184.149
19/08/2018 10:47:27 PM android-c28b29b650f6548c.home
19/08/2018 10:47:27 PM Client Protocol Version 3.3
** (vino-server:32529): WARNING **: 22:47:27.692: Deferring authentication of '46.101.184.149' for 5 seconds
** (vino-server:32529): WARNING **: 22:47:32.452: VNC authentication failure from '46.101.184.149'
19/08/2018 10:47:32 PM rfbAuthPasswordChecked: password check failed
19/08/2018 10:51:12 PM [IPv4] Got connection from client 46.101.184.149
19/08/2018 10:51:12 PM other clients:
19/08/2018 10:51:12 PM 46.101.184.149
19/08/2018 10:51:12 PM 46.101.184.149
19/08/2018 10:51:12 PM android-c28b29b650f6548c.home
19/08/2018 10:51:12 PM Client Protocol Version 3.3
** (vino-server:32529): WARNING **: 22:51:12.833: Deferring authentication of '46.101.184.149' for 5 seconds
** (vino-server:32529): WARNING **: 22:51:18.448: VNC authentication failure from '46.101.184.149'
19/08/2018 10:51:18 PM rfbAuthPasswordChecked: password check failed
19/08/2018 10:54:58 PM [IPv4] Got connection from client 46.101.184.149
19/08/2018 10:54:58 PM other clients:
19/08/2018 10:54:58 PM 46.101.184.149
19/08/2018 10:54:58 PM 46.101.184.149
19/08/2018 10:54:58 PM 46.101.184.149
19/08/2018 10:54:58 PM android-c28b29b650f6548c.home
19/08/2018 10:54:58 PM Client Protocol Version 3.3
** (vino-server:32529): WARNING **: 22:54:58.339: Deferring authentication of '46.101.184.149' for 5 seconds
** (vino-server:32529): WARNING **: 22:55:03.449: VNC authentication failure from '46.101.184.149'
19/08/2018 10:55:03 PM rfbAuthPasswordChecked: password check failed
19/08/2018 10:58:43 PM [IPv4] Got connection from client 46.101.184.149
19/08/2018 10:58:43 PM other clients:
19/08/2018 10:58:43 PM 46.101.184.149
19/08/2018 10:58:43 PM 46.101.184.149
19/08/2018 10:58:43 PM 46.101.184.149
19/08/2018 10:58:43 PM 46.101.184.149
19/08/2018 10:58:43 PM android-c28b29b650f6548c.home
19/08/2018 10:58:43 PM Client Protocol Version 3.3
** (vino-server:32529): WARNING **: 22:58:43.756: Deferring authentication of '46.101.184.149' for 5 seconds
** (vino-server:32529): WARNING **: 22:58:49.448: VNC authentication failure from '46.101.184.149'
19/08/2018 10:58:49 PM rfbAuthPasswordChecked: password check failed
19/08/2018 11:02:28 PM [IPv4] Got connection from client 46.101.184.149
19/08/2018 11:02:28 PM other clients:
19/08/2018 11:02:28 PM 46.101.184.149
19/08/2018 11:02:28 PM 46.101.184.149
19/08/2018 11:02:28 PM 46.101.184.149
19/08/2018 11:02:28 PM 46.101.184.149
19/08/2018 11:02:28 PM 46.101.184.149
19/08/2018 11:02:28 PM android-c28b29b650f6548c.home
19/08/2018 11:02:28 PM Client Protocol Version 3.3
** (vino-server:32529): WARNING **: 23:02:28.345: Deferring authentication of '46.101.184.149' for 5 seconds
** (vino-server:32529): WARNING **: 23:02:33.449: VNC authentication failure from '46.101.184.149'
19/08/2018 11:02:33 PM rfbAuthPasswordChecked: password check failed
19/08/2018 11:30:51 PM [IPv4] Got connection from client zg-0817a-64.stretchoid.com
19/08/2018 11:30:51 PM other clients:
19/08/2018 11:30:51 PM 46.101.184.149
19/08/2018 11:30:51 PM 46.101.184.149
19/08/2018 11:30:51 PM 46.101.184.149
19/08/2018 11:30:51 PM 46.101.184.149
19/08/2018 11:30:51 PM 46.101.184.149
19/08/2018 11:30:51 PM 46.101.184.149
19/08/2018 11:30:51 PM android-c28b29b650f6548c.home
19/08/2018 11:31:01 PM rfbProcessClientProtocolVersion: client gone
19/08/2018 11:31:01 PM Client zg-0817a-64.stretchoid.com gone
19/08/2018 11:31:01 PM Statistics:
19/08/2018 11:31:01 PM framebuffer updates 0, rectangles 0, bytes 0
sendto: Network is unreachable
sendto: Network is unreachable
20/08/2018 10:37:54 AM rfbProcessClientNormalMessage: read: Connection reset by peer
20/08/2018 10:37:54 AM Client android-c28b29b650f6548c.home gone
20/08/2018 10:37:54 AM Statistics:
20/08/2018 10:37:54 AM key events received 32, pointer events 3932
20/08/2018 10:37:54 AM framebuffer updates 7016, rectangles 13714, bytes 270216867
20/08/2018 10:37:54 AM ZRLE rectangles 13714, bytes 270216867
20/08/2018 10:37:54 AM raw bytes equivalent 538553044, compression ratio 1.993040
20/08/2018 02:15:10 PM [IPv4] Got connection from client 196.52.43.118
20/08/2018 02:15:10 PM other clients:
20/08/2018 02:15:10 PM 46.101.184.149
20/08/2018 02:15:10 PM 46.101.184.149
20/08/2018 02:15:10 PM 46.101.184.149
20/08/2018 02:15:10 PM 46.101.184.149
20/08/2018 02:15:10 PM 46.101.184.149
20/08/2018 02:15:10 PM 46.101.184.149
20/08/2018 02:15:10 PM Client Protocol Version 3.7
20/08/2018 02:15:10 PM Advertising security type 18
20/08/2018 02:15:10 PM Advertising security type 2
20/08/2018 02:15:10 PM Client returned security type 1
20/08/2018 02:15:10 PM rfbAuthProcessSecurityTypeMessage: client returned unadvertised security type 1
20/08/2018 02:15:10 PM Client 196.52.43.118 gone
20/08/2018 02:15:10 PM Statistics:
20/08/2018 02:15:10 PM framebuffer updates 0, rectangles 0, bytes 0
20/08/2018 02:31:26 PM [IPv4] Got connection from client scan-06.shadowserver.org
20/08/2018 02:31:26 PM other clients:
20/08/2018 02:31:26 PM 46.101.184.149
20/08/2018 02:31:26 PM 46.101.184.149
20/08/2018 02:31:26 PM 46.101.184.149
20/08/2018 02:31:26 PM 46.101.184.149
20/08/2018 02:31:26 PM 46.101.184.149
20/08/2018 02:31:26 PM 46.101.184.149
20/08/2018 02:31:28 PM rfbProcessClientProtocolVersion: client gone
20/08/2018 02:31:28 PM Client scan-06.shadowserver.org gone
20/08/2018 02:31:28 PM Statistics:
20/08/2018 02:31:28 PM framebuffer updates 0, rectangles 0, bytes 0
1
задан Tim
21 August 2018 в 03:20
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1 ответ
Используйте SSH для обеспечения безопасного соединения для VNC. В качестве награды это означает, что соединения могут использовать Ваше существующее, защитить ключи SSH вместо твердых, чтобы помнить или небезопасных паролей.
То, как это работает, и как настроить его, объяснено подробно в https://help.ubuntu.com/community/VNC
Так как возможно, что Ваш сервер VNC уже был поставлен под угрозу, практика безопасные вычисления и уничтожать-и-переустанавливать тот экземпляр Ubuntu.
2
ответ дан user535733
7 December 2019 в 13:22
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