On Sat, 15 Jul 2023, Greg Wooledge wrote:
On Sat, Jul 15, 2023 at 11:59:33AM +0200, Roger Price wrote:rprice@kananga:~$ ssh -v rprice@maria ssh: connect to host maria port 22: Connection timed outA timeout is an ENTIRELY different symptom, and when combined with "but I can ping the remote", it means a firewall is involved. Every time.
I tried to clear out the existing firewall on a Debian 9 machine with the commands
iptables -F iptables -X iptables -P INPUT ACCEPT iptables -P FORWARD ACCEPT iptables -P OUTPUT ACCEPT iptables -L -n --line-numbers reports Chain INPUT (policy ACCEPT) num target prot opt source destination 1 ufw-before-logging-input all -- 0.0.0.0/0 0.0.0.0/0 2 ufw-before-input all -- 0.0.0.0/0 0.0.0.0/0 3 ufw-after-input all -- 0.0.0.0/0 0.0.0.0/0 4 ufw-after-logging-input all -- 0.0.0.0/0 0.0.0.0/0 5 ufw-reject-input all -- 0.0.0.0/0 0.0.0.0/0 6 ufw-track-input all -- 0.0.0.0/0 0.0.0.0/0 ... and so on I then recycled the Debian 9 machine, power off, power on, for a clean restart, After the restart, I tried to ssh from Debian 11 to that Debian 9 machine rprice@titan ~ ssh -v rprice@kananga ssh: connect to host kananga port 22: Connection timed out So it's something else? Roger