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NIOS

Port Number

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  • FTP servers (port 21)
  • SSH servers (port 22) Secure Shell
  • SMTP servers (port 25) Simple Mail Transfer Protocol
  • DNS servers (port 53) Domain Name Server
  • HTTP servers (port 80) Hyper Text Transfer Protocol
  • POP3 servers (port 110) Post Office Protocol
  • RPC servers (port 135)
  • NetBIOS servers (port 139)
  • IMAP servers (port 143) Internet Messaging Access Protocol
  • SNMP servers (port 161) Simple Network Message Protocol
  • HTTPS servers (port 443)
  • TCP access to remote SMB (Server Message Block) servers (port 445)
  • SMTP/SSL servers (port 465)
  • IMAP servers (port 585)
  • TCP access to remote authenticated SMTP servers (port 587)
  • TCP connections to remote IMAP/SSL servers (port 993)
  • TCP connections to remote POP/SSL servers (port 995)
  • OpenVPN servers (port 1194)
  • PPTP Control servers (port 1723)
  • SIP servers (port 5060)
  • BitTorrent servers (port 6881)
  • TOR servers (port 9001) is allowed.