On Montag 2023-07-17 13:10, Claudio Marcial Peon wrote:
Date: Mon, 17 Jul 2023 13:10:09 From: Claudio Marcial Peon <claudio@datacor.net.ar> To: users@lists.opensuse.org Cc: Andrei Borzenkov <arvidjaar@gmail.com> Subject: Re: ssh connection failes (times out)
On Mon, Jul 17, 2023 at 1:07 PM Paul Neuwirth via openSUSE Users < users@lists.opensuse.org> wrote:
On Montag 2023-07-17 12:44, Andrei Borzenkov wrote:
Date: Mon, 17 Jul 2023 12:44:53 From: Andrei Borzenkov <arvidjaar@gmail.com> To: users@lists.opensuse.org Subject: Re: ssh connection failes (times out)
On Mon, Jul 17, 2023 at 1:15 PM Paul Neuwirth <mail@paul-neuwirth.nl> wrote:
On Montag 2023-07-17 11:42, Andrei Borzenkov wrote:
Date: Mon, 17 Jul 2023 11:42:11 From: Andrei Borzenkov <arvidjaar@gmail.com> To: users@lists.opensuse.org Subject: Re: ssh connection failes (times out)
On Mon, Jul 17, 2023 at 12:18 PM Paul Neuwirth <mail@paul-neuwirth.nl>
wrote:
nothing to see for me. (where does the "noprefixroute" come from?)
It comes from NetworkManager
Well, I would simply capture packets on this host when ssh connection is attempted. Then you at least know whether any request comes through or not.
seems so, tcpdump shows repeatingly those lines on trying to connect: 12:06:51.525602 IP stb1.swabian.net.43562 > omega.swabian.net.ssh: Flags [S], seq 3512370883, win 29200, options [mss 1460,sackOK,TS val 8907069 ecr 0,nop,wscale 6], length 0
This is an incoming TCP connection request. Do you also see any reply on this interface?
no, nothing. also nothing showing up (dropped packets or so) in dmesg.
12:07:31.105170 IP alpha.swabian.net.39586 > omega.swabian.net.ssh: Flags [S], seq 2839271321, win 29200, options [mss 1460,sackOK,TS val 861540940 ecr 0,nop,wscale 7], length 0
sshd is definitively listening... # netstat -lntp Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN 1/systemd tcp 0 0 127.0.0.1:7634 0.0.0.0:* LISTEN 1935/hddtemp tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1003/sshd: /usr/sbi tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 2377/master
Sounds silly.. but.. Can you reach that host with ICMP or maybe access a different service?
no. cannot ping the device. tried netcat listen on a port. cannot connect to that either tcp 0 0 0.0.0.0:12345 0.0.0.0:* LISTEN 8439/nc