pi@raspberrypisudpi@raspberrypi:~$ sudo netstat -tlpn (No info could be read for "-p": geteuid()=1000 but you should be root.) Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN - 1817/apache2 tcp 0 0 0.0.0.0:21 0.0.0.0:* LISTEN -2227/vsftpd tcp 0 0 127.0.0.1:3350 0.0.0.0:* LISTEN 1784/xrdp- sesman tcp 0 0 0.0.0.0:23 0.0.0.0:* LISTEN -3115/sshd tcp 0 0 0.0.0.0:3389 0.0.0.0:* LISTEN - 1781/xrdp tcp 0 0 127.0.0.1:3306 0.0.0.0:* LISTEN 2397/mysqld pi@raspberrypi:~$ netstat -tlpn (No info could be read for "-p": geteuid()=1000 but you should be root.) Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN - tcp 0 0 0.0.0.0:21 0.0.0.0:* LISTEN - tcp 0 0 127.0.0.1:3350 0.0.0.0:* LISTEN - tcp 0 0 0.0.0.0:23 0.0.0.0:* LISTEN - tcp 0 0 0.0.0.0:3389 0.0.0.0:* LISTEN - tcp 0 0 127.0.0.1:3306 0.0.0.0:* LISTEN sudpi@raspberrypi:~$ sudo netstat -tlpn Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 1817/apache2 tcp 0 0 0.0.0.0:21 0.0.0.0:* LISTEN 2227/vsftpd tcp 0 0 127.0.0.1:3350 0.0.0.0:* LISTEN 1784/xrdp-sesman tcp 0 0 0.0.0.0:23 0.0.0.0:* LISTEN 3115/sshd tcp 0 0 0.0.0.0:3389 0.0.0.0:* LISTEN 1781/xrdp tcp 0 0 127.0.0.1:3306 0.0.0.0:* LISTEN 2397/mysqld 
SSH "connection refused" on Raspberry pi - cannot find why
I have the following problem SSH "connection refused". It would work fine, but while I am working on the SSH, I would get "connection refused" and would have to re-connect (which does not occur for good 5-10 minutes). I have tried everything (restart linux, restart ssh) yet still does not help. I've checked var/log as well but nothing helpful in there...
NOTE: Interesting note I found is, when I try ssh to my external ip(277...), it goes to black cmd screen, I close this and try my 192.168.0.13 address and it lets me sign in.. but short while, again connection refused... Of course if I open my server and sudo sshd restart, my ssh "connection refused" goes away...
My ssh port is opened at 23, and I have it set on modem/router as well
pi@raspberrypi:~$ netstat -tlpn (No info could be read for "-p": geteuid()=1000 but you should be root.) Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN - tcp 0 0 0.0.0.0:21 0.0.0.0:* LISTEN - tcp 0 0 127.0.0.1:3350 0.0.0.0:* LISTEN - tcp 0 0 0.0.0.0:23 0.0.0.0:* LISTEN - tcp 0 0 0.0.0.0:3389 0.0.0.0:* LISTEN - tcp 0 0 127.0.0.1:3306 0.0.0.0:* LISTEN When I get disconnected, and log back in and check "WHO" I only see my previous connection, my root and the current connection
whopi@raspberrypi:~$ who pi tty1 2013-01-28 09:20 pi pts/0 2013-01-28 10:28 (192.168.0.12) pi pts/1 2013-01-28 10:32 (192.168.0.12) This is what I have in my ssh_config that I have modified (SSH to 23 because rogers use 22...)
# Port 23 ... #Keep my damn connection alive! KeepAlive yes ServerAliveInterval 60 This is what I get when I run arp-scan
pi@raspberrypi:/etc$ sudo arp-scan -I eth0 -l | grep 192.168.0.13 192.168.0.13 a0:6c:ec:ec:bb:5b (Unknown) This part I found online that told me I should post the following two information
pi@raspberrypi:~$ ps afxu | grep sshd root 2838 0.0 0.7 9800 3168 ? Ss 10:27 0:00 sshd: pi [priv] pi 2845 0.0 0.3 9800 1628 ? S 10:28 0:00 \_ sshd: pi@pt s/0 root 2854 0.0 0.7 9800 3168 ? Ss 10:32 0:00 sshd: pi [priv] pi 2861 0.0 0.3 9800 1628 ? S 10:32 0:00 \_ sshd: pi@pt s/1 root 2900 0.3 0.7 9800 3168 ? Ss 10:44 0:00 sshd: pi [priv] pi 2907 0.0 0.3 9800 1628 ? S 10:44 0:00 \_ sshd: pi@pt s/2 root 2934 0.0 0.2 6204 1060 ? Ss 10:45 0:00 /usr/sbin/sshd root 2954 0.7 0.7 9800 3164 ? Ss 10:45 0:00 \_ sshd: pi [p riv] pi 2961 0.1 0.3 9800 1624 ? S 10:46 0:00 \_ sshd: p i@pts/3 pi 2970 0.0 0.1 3536 796 pts/3 S+ 10:46 0:00 \_ grep sshd EDIT: pi@raspberrypi:~$ ssh -vvv 192.168.0.13 (THIS might be long... Thank you Bart Friederichs)
pi@raspberrypi:~$ ssh -vvv 192.168.0.13 -p 23 OpenSSH_6.0p1 Debian-3, OpenSSL 1.0.1c 10 May 2012 debug1: Reading configuration data /etc/ssh/ssh_config debug1: /etc/ssh/ssh_config line 19: Applying options for * debug2: ssh_connect: needpriv 0 debug1: Connecting to 192.168.0.13 [192.168.0.13] port 23. debug1: Connection established. debug1: SELinux support disabled ... debug1: match: OpenSSH_6.0p1 Debian-3 pat OpenSSH* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_6.0p1 Debian-3 debug2: fd 3 setting O_NONBLOCK debug3: put_host_port: [192.168.0.13]:23 debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received ... debug1: Next authentication method: publickey debug1: Trying private key: /var/www/.ssh/id_rsa debug3: no such identity: /var/www/.ssh/id_rsa debug1: Trying private key: /var/www/.ssh/id_dsa debug3: no such identity: /var/www/.ssh/id_dsa debug1: Trying private key: /var/www/.ssh/id_ecdsa debug3: no such identity: /var/www/.ssh/id_ecdsa debug2: we did not send a packet, disable method debug3: authmethod_lookup password debug3: remaining preferred: ,password debug3: authmethod_is_enabled password debug1: Next authentication method: password [email protected]'s password: - I TYPED PASSWORD - ... debug2: channel_input_status_confirm: type 99 id 0 debug2: PTY allocation request accepted on channel 0 debug2: channel 0: rcvd adjust 2097152 debug2: channel_input_status_confirm: type 99 id 0 debug2: shell request accepted on channel 0 Linux raspberrypi 3.6.11+ #350 PREEMPT Mon Jan 7 21:51:11 GMT 2013 armv6l