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Peter Gerwinski
Datenbanken und Datensicherheit
Commits
7ccc08f9
Commit
7ccc08f9
authored
8 months ago
by
Peter Gerwinski
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Screenshots 13.11.2024
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20241113/ipv6-01.txt
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20241113/ipv6-01.txt
20241113/ssh-tunnel-01.txt
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20241113/ssh-tunnel-01.txt
20241113/ssh-tunnel-02.txt
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cassini/home/peter/bo/2024ws/dbs/20241113> nc.openbsd -6 [2a01:4f8:192:4405::170:59] 80
nc.openbsd: getaddrinfo for host "[2a01:4f8:192:4405::170:59]" port 80: Name or service not known
cassini/home/peter/bo/2024ws/dbs/20241113> nc.openbsd -6 2a01:4f8:192:4405::170:59 80
cassini/home/peter/bo/2024ws/dbs/20241113> slogin main-0.cvh-server.de
Linux main-0 6.1.0-22-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.94-1 (2024-06-21) x86_64
The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.
Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
Last login: Wed Nov 13 11:48:45 2024 from 195.37.15.82
pgerwinski@main-0:~$ nc.openbsd -6 2a01:4f8:192:4405::170:59 80
GET /^M
<!doctype html public "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<title>ngc224.gerwinski.de</title>
</head>
<body background="ngc224.jpg" bgcolor="#000000" text="#CFCFCF"
link="#7F7FFF" alink="#CFCFFF" vlink="#FF5FFF">
<h1>ngc224.gerwinski.de - der Server</h1>
<p>Benannt nach der Andromeda-Galaxie - M31 - NGC224
<p align="center"><img src="null.png" alt="" width="1" height="1" vspace="360">
<p><font size="-2"><a href="http://www.peter.gerwinski.de">Peter Gerwinski</a><br>
<a href="http://www.noao.edu/image_gallery/html/im0424.html">Bild:
Bill Schoening, Vanessa Harvey/REU program/NOAO/AURA/NSF</a></font>
</body>
</html>
pgerwinski@main-0:~$
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20241113/ssh-tunnel-01.txt
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Server:
cassini/home/peter/bo/2024ws/dbs/20241113> ssh m31
Linux m31 6.1.0-21-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.90-1 (2024-05-03) x86_64
The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.
Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
You have no mail.
Last login: Wed Nov 13 13:32:42 2024 from 195.37.15.82
m31/home/peter> nc -p 1234 -l
Client:
cassini/home/peter> nc m31.gerwinski.de 1234
m31.gerwinski.de [88.198.170.60] 1234 (?) : Connection refused
Grund: Die Firewall läßt Port 1234 nicht durch.
Server: lauschendes Programm und Verbindung schließen
^C
m31/home/peter>
Abgemeldet
Connection to m31.gerwinski.de closed.
Server: neu anmelden, diesmal mit SSH-Tunnel
cassini/home/peter/bo/2024ws/dbs/20241113> ssh -L 2345:localhost:1234 m31.gerwinski.de
Linux m31 6.1.0-21-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.90-1 (2024-05-03) x86_64
The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.
Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
You have no mail.
Last login: Wed Nov 13 13:33:28 2024 from 195.37.15.82
m31/home/peter> nc -p 1234 -l
Client: Verbindung funktioniert jetzt durch den SSH-Tunnel hindurch
auf dem lokalen Port 2345
cassini/home/peter> nc m31.gerwinski.de 1234
m31.gerwinski.de [88.198.170.60] 1234 (?) : Connection refused
Sie haben Post in /var/mail/peter.
cassini/home/peter> nc localhost 1234
localhost [127.0.0.1] 1234 (?) : Connection refused
cassini/home/peter> nc localhost 2345
Tach.
Schön, Dich zu sehen! :-)
^C
Server:
Tach.
Schön, Dich zu sehen! :-)
m31/home/peter>
Abgemeldet
Connection to m31.gerwinski.de closed.
Vertauschen der Rollen von Client und Server:
cassini/home/peter> nc localhost 2345
localhost [127.0.0.1] 2345 (?) : Connection refused
cassini/home/peter> nc -p 1234 -l
Da bist Du ja wieder. :-)
Jau!
^C
cassini/home/peter>
SSH-Tunnel führt von dem entfernten Rechner zum lokalen.
Port 2345 auf dem entfernten Rechner ist verbunden mit dem lokalen Port 1234
cassini/home/peter/bo/2024ws/dbs/20241113> ssh -R 2345:localhost:1234 m31.gerwinski.de
Linux m31 6.1.0-21-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.90-1 (2024-05-03) x86_64
The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.
Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
You have no mail.
Last login: Wed Nov 13 13:35:05 2024 from 195.37.15.82
m31/home/peter> nc -p 1234 -l
^C
m31/home/peter> nc localhost 2345
Da bist Du ja wieder. :-)
Jau!
^C
m31/home/peter>
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cassini/home/peter/bo/2024ws/dbs/20241113> ssh -L 5506:localhost:5526 -R 5926:localhost:5901 root@streaming.cvh-server.de
Linux streaming 6.1.0-25-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.106-3 (2024-08-26) x86_64
The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.
Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
Last login: Wed Nov 13 13:48:11 2024 from 10.128.29.177
root@streaming:~# su - pult
pult@streaming:~$ HOME=/home/pult/vnc6 DISPLAY=:6 xtigervncviewer -passwd /home/pult/.vnc/passwd.5926 -shared -fullscreen localhost:5926
TigerVNC-Betrachter (64-bit) Version 1.11.0
Erstellt auf: 2022-01-26 17:59
Copyright (C) 1999-2020 TigerVNC-Team und viele andere (siehe README.rst)
Siehe https://www.tigervnc.org für Informationen zu TigerVNC.
Wed Nov 13 13:48:18 2024
DecodeManager: Detected 6 CPU core(s)
DecodeManager: Creating 4 decoder thread(s)
CConn: Verbunden mit Rechner localhost, Port 5926
CConnection: Server supports RFB protocol version 3.8
CConnection: Using RFB protocol version 3.8
CConnection: Choosing security type VncAuth(2)
DesktopWindow: Fenstergröße anpassen, um zufällige Vollbild-Anforderung zu
vermeiden
CConn: Pixelformat depth 24 (32bpp) little-endian rgb888 wird verwendet
XRequest.132: BadWindow (invalid Window parameter) 0x1000005
CConnection: Enabling continuous updates
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