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Services

Establishment of virtual private networks (VPN)

  • OpenVPN 2.0: UDP/1194 and TCP/1194.
  • IPv6 Tunnel Broker Service: protocol IP 41 inbound and outbound.
  • IPsec NAT-Traversal UDP/4500
  • Cisco IPSec VPN over TCP: TCP/10000 outbound only.
  • PPTP VPN: Protocol IP 47 (GRE) inbound and outbound.

Remote connection

  • SSH: TCP/22 outbound only.
  • RDP: TCP/3389 outbound only.

Web browsing

  • HTTP: TCP/80 outbound only.
  • HTTPS: HTTPS: TCP/443 outbound only.

E-mail

  • IMAP2+4: TCP/143 outbound only.
  • IMAP3: TCP/220 outbound only.
  • IMAPS: TCP/993 outbound only.
  • POP: TCP/110 outbound only.
  • POP3S: TCP/995 outbound only.
  • SMTPS: TCP/465 outbound only.
  • SMTP over STARTTLS: TCP/587 outbound only

File transfer

  • FTP Passive: TCP/21 outbound only.