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tkt

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This commit is contained in:
Dimitri SOLAR
2025-03-24 11:36:01 +01:00
parent 0ecbdd4585
commit b9c451e95c
72 changed files with 2699 additions and 376 deletions
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SCR2.1/TP14/tkt~ Normal file
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1)
On utilise la commande ncat -ul 50000 sur un premier terminal.
sur un autre terminal on utilise la commande ss -lnu
[solar@salle231-04 TP14]$ ss -lun
State Recv-Q Send-Q Local Address:Port Peer Address:Port
UNCONN 0 0 0.0.0.0:5353 0.0.0.0:*
UNCONN 0 0 0.0.0.0:5355 0.0.0.0:*
UNCONN 0 0 127.0.0.54:53 0.0.0.0:*
UNCONN 0 0 127.0.0.53%lo:53 0.0.0.0:*
UNCONN 0 0 172.16.2.91%eno1:68 0.0.0.0:*
UNCONN 0 0 172.17.255.255:137 0.0.0.0:*
UNCONN 0 0 172.17.0.1:137 0.0.0.0:*
UNCONN 0 0 172.16.255.255:137 0.0.0.0:*
UNCONN 0 0 172.16.2.91:137 0.0.0.0:*
UNCONN 0 0 0.0.0.0:137 0.0.0.0:*
UNCONN 0 0 172.17.255.255:138 0.0.0.0:*
UNCONN 0 0 172.17.0.1:138 0.0.0.0:*
UNCONN 0 0 172.16.255.255:138 0.0.0.0:*
UNCONN 0 0 172.16.2.91:138 0.0.0.0:*
UNCONN 0 0 0.0.0.0:138 0.0.0.0:*
UNCONN 0 0 0.0.0.0:50000 0.0.0.0:*
UNCONN 0 0 [::]:5353 [::]:*
UNCONN 0 0 [::]:5355 [::]:*
UNCONN 0 0 [fe80::e654:e8ff:fea1:a2e8]%eno1:546 [::]:*
UNCONN 0 0 [::]:50000 [::]:*
2)
dd if=/dev/urandom of=ft-file.dat bs=1024 count=9
9+0 records in
9+0 records out
9216 bytes (9.2 kB, 9.0 KiB) copied, 0.0083619 s, 1.1 MB/s
ls -lh ft-file.dat
-rw-r--r-- 1 solar students23 9.0K Mar 12 14:52 ft-file.dat
3)
ncat -lu 50000 > resultat
ncat 192.16.2.91 < ft-file.dat
a la fin dans resultat on a la même chose que tu sur le fichier ft-file.dat
-rw-r--r-- 1 solar info-etu-but-2024 9216 Feb 11 17:06 resultat
4.
tcpdump -tn "tcp and port 50000 and not arp"
II)
1)
which traceroute
which: no traceroute in (/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/opt/android-sdk/platform-tools:/opt/android-sdk/tools:/opt/android-sdk/tools/bin:/usr/lib/jvm/default/bin:/usr/bin/site_perl:/usr/bin/vendor_perl:/usr/bin/core_perl)
which tracepath
/usr/bin/tracepath
cela signifie que tracepath existe et non traceroute
2)
tcpdump -vvv -i eno1 -f "host 172.16.3.198 and not tcp and not udp and not arp" -w tracepath-trace.txt
tracepath 8.8.8.8
tcpdump -r tracepath-trace.txt
3)
-n permet d'afficher les ip numériques
4)
tcpdump -r tracepath-trace.txt |sed '/UDP.*$/a \\'
a)
tcpdump: verbose output suppressed, use -v[v]... for full protocol decode
listening on eno1, link-type EN10MB (Ethernet), snapshot length 262144 bytes
^C
0 packets captured
0 packets received by filter
0 packets dropped by kernel
b)
tcpdump: verbose output suppressed, use -v[v]... for full protocol decode
listening on eno1, link-type EN10MB (Ethernet), snapshot length 262144 bytes
^C
0 packets captured
0 packets received by filter
0 packets dropped by kernel
c)
tcpdump: verbose output suppressed, use -v[v]... for full protocol decode
listening on eno1, link-type EN10MB (Ethernet), snapshot length 262144 bytes
^C
0 packets captured
0 packets received by filter
0 packets dropped by kernel
6)
serveur :
-terminal 1:
ncat -ul 50000
-terminal 2:
tcpdump -i eno1 "udp and port 50000"
tcpdump: verbose output suppressed, use -v[v]... for full protocol decode
listening on eno1, link-type EN10MB (Ethernet), snapshot length 262144 bytes
16:40:07.467945 IP salle229-02.iut-fbleau.fr.52428 > salle229-01.iut-fbleau.fr.50000: UDP, length 8192
16:40:07.468060 IP salle229-02.iut-fbleau.fr.52428 > salle229-01.iut-fbleau.fr.50000: UDP, length 1024
Client :
terminal 1:
tcpdump -i eno1 "udp and port 50000"
terminal 2:
ncat -u [ip] 500000 < ft-file.dat
7)
Il y a 2 paquet, un de 8192 et un autre de 1024.
II)