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[linux_var] nessuna connessione ssh
- To: Talking Linuxvar <talking@ml.linuxvar.it>
- Subject: [linux_var] nessuna connessione ssh
- From: Ross <rcrispo@gmail.com>
- Date: Tue, 30 Jul 2013 15:04:14 +0200
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ciao
per la prima volta ho avuto problemi a connettermi in ssh su una
macchina remota
Hw su cui gira ssh server e un olimex a10s.
giravano apache2, vsftp senza problemi.
di seguito output di ssh client
ssh -v ross@192.168.1.10
OpenSSH_6.2p2 Debian-4, OpenSSL 1.0.1e 11 Feb 2013
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug1: Connecting to 192.168.1.10 [192.168.1.10] port 22.
debug1: Connection established.
debug1: identity file /home/ross/.ssh/id_rsa type -1
debug1: identity file /home/ross/.ssh/id_rsa-cert type -1
debug1: identity file /home/ross/.ssh/id_dsa type -1
debug1: identity file /home/ross/.ssh/id_dsa-cert type -1
debug1: identity file /home/ross/.ssh/id_ecdsa type -1
debug1: identity file /home/ross/.ssh/id_ecdsa-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_6.2p2 Debian-4
debug1: Remote protocol version 2.0, remote software version
OpenSSH_6.0p1 Debian-4
debug1: match: OpenSSH_6.0p1 Debian-4 pat OpenSSH*
debug1: SSH2_MSG_KEXINIT sent
il problema che rimaneva in attesa in questo stato senza neppure un timeout.
Ho provato con un collegamento diretto attraverso un switch fuori dalla
lan aziendale.
Ho provato a rigenerare le chiavi.
Alla fine ho scoperto che per connettermi in ssh ho dovuto impostare per
eth0 il valore mtu a 576.
Ora tutto funziona.
Il problema si presentava solo su una board. Su un'altra board sempre
A10s ma con la NAND per android
funzionava tutto. Infatti spostando la stessa sd sulla a10s senza nand
non andava,
mentre sulla a10s con NAND si.
C'è qualcuno che ha voglia di spiegarmi cosa cambia???
Ho notato che il ping senza impostare mtu è < 1ms
con mtu a 576 la media è circa 3 ms.
Grazie
Ross
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