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21 FTP 22 SSH 23 Telnet 25 SMTP 53 DNS 80 HTTP 110 POP3 143 IMAP 443 HTTPS 445 SMB 587 SMTP (submission) 993 IMAPS 995 POP3S 1433 MSSQL 3306 MySQL 3389 RDP 5432 PostgreSQL 6379 Redis 8080 HTTP alt 8443 HTTPS alt 27017 MongoDB