Are the following ports blocked on various 4G networks of New Delhi, India on Vodafone and Reliance Jio network?---- The ports that should be forwarded are: 20, 21 (TCP Outbound) - Additional TCP Port outbound for passive mode FTP 80 (Outbound) 30584 (UDP inbound/outbound) 30583 (TCP Outbound) 554 (TCP Inbound) I came back after long break of 2.5 Months and before that all ports were working fine and Customer service are not able to help either.