Hi i am using imx6 board, i am using GSM module on board and also able to configure ppp after running command "pppd call gprs&" and "route add default dev ppp0" i am able to get ppp0 IP by "ifconfig" and also when i do "ping google.com" from board it works.
also i am able to ping that IP via different networks e.g. imx6(vodafone GSM network) and laptop(via mobile hotspot) but when i try to do ssh root@ip from my laptop it shows
ssh: connect to host "xxx.xxx.xxx.xxx" port 22: Connection refused
i am able to do local ssh connection via Ethernet but when i wanted access my board by a different networks please let me know if i wanted to do some more changes.