| IP Version | Protocol | Port | Direction of Blocking | Common Port Use | ||
|---|---|---|---|---|---|---|
| IPv4 and IPv6 | TCP and UDP | 0 | Both Outbound and Inbound | Reserved | ||
| IPv4 and IPv6 | UDP | 17 | Inbound | Quote of the Day (QOTD) | ||
| IPv4 and IPv6 | UDP | 19 | Inbound | Character Generator Protocol (CHARGEN) | ||
| IPv4 and IPv6 | TCP and UDP | 25 | Outbound | SMTP | ||
| IPv4 | UDP | 67 | Both Outbound and Inbound | DHCP | ||
| IPv4 and IPv6 | TCP and UDP | 135 to 139 | Both Outbound and Inbound | NetBios | ||
| IPv4 | TCP | 445 | Outbound | SMB | ||
| IPv4 | UDP | 520 | Inbound | RIP | ||
| IPv6 | UDP | 546 to 547 | Both Outbound and Inbound | DHCPv6 | ||
| IPv4 and IPv6 | UDP | 1900 | Inbound | SSDP | ||
| IPv4 and IPv6 | UDP | 11211 | Inbound | Memcached |
Note: In Indonesia, local regulations require us to block port 465 TCP. This may cause issues with Apple Mail on iOS when using the default settings. To resolve this, configure your mail client to use port 567 instead.
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