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SSHS mit ohne Verschlüsselung&Kompression - Syslogmeldungen
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SarahS93
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Joined: 21 Nov 2013
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PostPosted: Sun Mar 09, 2014 6:33 am    Post subject: SSHS mit ohne Verschlüsselung&Kompression - Syslogmeldun Reply with quote

Ich will im LAN zwischen Computern mal eben schnell ein paar Dateien hin und her Kopieren, darum hab ich mich für sshfs entschieden.

Ein "sshfs benutzer@computer:/verzeichnis lokalereinhängepunkt" funktioniert, ich komme auf um die 50 bis 60 MB/s, habe beim entfernten Computer 10 bis 20% CPU Auslastung

Baue ich die Option "-o Ciphers=arcfour"" mit ein. Komme ich auf 90 bis 110 MB/s und habe unter 5% CPU auslastung (entfernter Computer)
Sehe aber im Syslog solche Meldungen:
Code:
Mar  9 06:04:32 pc2 sshd[3850]: SSH: Server;Ltype: Kex;Remote: 192.168.178.33-39050;Enc: arcfour;MAC: hmac-md5;Comp: none
Mar  9 06:04:44 pc2 sshd[3850]: SSH: Server;Ltype: Kex;Remote: 192.168.178.33-39050;Enc: arcfour;MAC: hmac-md5;Comp: none
Mar  9 06:04:56 pc2 sshd[3850]: SSH: Server;Ltype: Kex;Remote: 192.168.178.33-39050;Enc: arcfour;MAC: hmac-md5;Comp: none
Mar  9 06:05:09 pc2 sshd[3850]: SSH: Server;Ltype: Kex;Remote: 192.168.178.33-39050;Enc: arcfour;MAC: hmac-md5;Comp: none
Mar  9 06:05:21 pc2 sshd[3850]: SSH: Server;Ltype: Kex;Remote: 192.168.178.33-39050;Enc: arcfour;MAC: hmac-md5;Comp: none
Mar  9 06:05:33 pc2 sshd[3850]: SSH: Server;Ltype: Kex;Remote: 192.168.178.33-39050;Enc: arcfour;MAC: hmac-md5;Comp: none
Mar  9 06:05:45 pc2 sshd[3850]: SSH: Server;Ltype: Kex;Remote: 192.168.178.33-39050;Enc: arcfour;MAC: hmac-md5;Comp: none
Mar  9 06:05:57 pc2 sshd[3850]: SSH: Server;Ltype: Kex;Remote: 192.168.178.33-39050;Enc: arcfour;MAC: hmac-md5;Comp: none
Mar  9 06:06:08 pc2 sshd[3850]: SSH: Server;Ltype: Kex;Remote: 192.168.178.33-39050;Enc: arcfour;MAC: hmac-md5;Comp: none
Mar  9 06:06:35 pc2 sshd[3850]: SSH: Server;Ltype: Kex;Remote: 192.168.178.33-39050;Enc: arcfour;MAC: hmac-md5;Comp: none
Mar  9 06:06:48 pc2 sshd[3850]: SSH: Server;Ltype: Kex;Remote: 192.168.178.33-39050;Enc: arcfour;MAC: hmac-md5;Comp: none
Mar  9 06:06:59 pc2 sshd[3850]: SSH: Server;Ltype: Kex;Remote: 192.168.178.33-39050;Enc: arcfour;MAC: hmac-md5;Comp: none
Mar  9 06:07:11 pc2 sshd[3850]: SSH: Server;Ltype: Kex;Remote: 192.168.178.33-39050;Enc: arcfour;MAC: hmac-md5;Comp: none

Was bedeuten diese und warum kommen die in so kurzen abständen?
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toralf
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Joined: 01 Feb 2004
Posts: 2745
Location: Hamburg/Germany

PostPosted: Sun Mar 09, 2014 3:39 pm    Post subject: Reply with quote

Well, every ssh connection initiation will be logged in syslog - seems, that with the given cypher every file copy is made with a complete new ssh handshake, or ?
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SarahS93
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PostPosted: Sun Mar 09, 2014 6:20 pm    Post subject: Reply with quote

No, i copy one big file.
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