Why can a port can be accessible from outside although it is not in firewall open ports on centos 7?

I have a remote vps working with centos 7, related firewalld info is as below, firewalld is running actively. [root@doer mydir]# firewall-cmd –get-zone-of-interface=eth0 no zone [root@ doer mydir]# firewall-cmd –list-ports You’re performing an operation over default zone (‘public’), but your connections/interfaces are in zone ‘home’ (see –get-active-zones) You most likely need to use –zone=home option.…

Nginx proxy sees different client IP for different servers

I have nginx proxy configured for blocking some services for VPN clients only (10.1.0.4 for all users). Example of working case: ### bitwarden server { server_name one.example.com; listen 443 ssl; resolver 127.0.0.11; set $bitwarden bitwarden:80; location / { allow 10.1.0.4; deny all; proxy_pass http://$bitwarden$request_uri; } ssl_certificate /etc/letsencrypt/live/example.com/fullchain.pem; ssl_certificate_key /etc/letsencrypt/live/example.com/privkey.pem; include /etc/letsencrypt/conf/options-ssl-nginx.conf; ssl_dhparam /etc/letsencrypt/conf/ssl-dhparams.pem; } All…

MobaXterm Mosh client unable to connect to remote hosts with usage error

When using MobaXterm’s Mosh client on Windows 10/64 to connect to remote hosts I get the following usage error /bin/moshsession usage: /bin/moshsession <server_name> <user_name> [<ssh_port_number> <locale> <Prediction_type> <mosh_server_command> <Mosh_ports_range> <Ssh_private_key>] When attempting to connect to/from any UNIX host (Slackware, Debian 10, OpenBSD) from Bash or any other shell using my standard OpenSSh client with the…