Block Internet Access

Block Internet

Block Internet Ports

Block Additional Ports

DOES NOT APPLY TO RECON. The Block | Internet Access settings panel allows you to block ALL Internet Access or prevent access at a particular port, such as a port used by FTP or a type of chat. Use this type of blocking in addition to control general types of Internet activity and activity at ports.

NOTE: Your settings on this panel and on Web Sites and Chat/IM Activity blocking may overlap. For example, blocking Yahoo Messenger ports blocks ALL Yahoo IM contacts. The most restrictive policy always applies.

To block Internet access at the computer:

  • Block Internet Access – Select ON to turn on blocking and activate settings below. Select OFF to allow Internet access.
  • Block All Internet Access – Select to block ALL access to the Internet on the computer: ports, web sites, email, and chat/IM communication. The Blocking Schedule can be set to schedule when access is blocked, otherwise it is blocked at all times.  
  • Block Selected Internet Access – Select to specify (on this panel) types of Internet access to block. If a Blocking Schedule is set, it applies to these selections.
  • Blocking Schedule – Click this button to set a schedule for the blocking specified on this panel. See When to Block.

To block specific Internet ports:

Blocking a port blocks a particular type of Internet access. For example, in a library you might block all Chat/IM types (AIM, ICQ, MSN, etc.), but allow HTTP access to web sites for research. Check an item’s Block column to prevent access. Clear it to allow access.

Slide the left/right scroll bar below this list to view the Ports Blocked by your selection.  

  • Web Sites via HTTP/HTTPS – Internet access to normal and secure Internet sites via the HTTP HyperText Transfer Protocol is used to establish a TCP/IP connection between a client (Internet browser) and a remote host server, usually on IP port 80 and HTTPS Provides HTTP communication requests between clients and servers using a secure socket layer protocols; this includes most web sites, but not local network or FTP addresses. Blocks outgoing ports 80, 443, 8008, 8080, and 8088.
  • SMTP/POP Email – Access to standard SMTP Simple Mail Transfer Protocol is used to send outgoing email messages to a server and POP Post Office Protocol is used to retrieve email from a mail server email. Blocks outgoing ports: 25, 100, 109, 110, 465, and 995.
  • File Transfer via FTP – File uploads and downloads using FTP File Transfer Protocol is used to upload and download files from a host server over an Internet connection (File Transfer Protocol).  Blocks outgoing ports 20, 21, 989, and 990.
  • AOL and HTTP/HTTPS – America Online (AOL) and other web sites that might not be covered by the first option. Blocks outgoing ports 80, 443, 8008, 8080, 4000, 5190-5193, 8088, and 11523.
  • AOL Instant Messenger (AIM) – Instant messaging using AIM America Online Instant Messenger, accounts for instant messaging and social networking. Blocks all outgoing and incoming ports used by the AIM client.
  • ICQ – Chat communication in the standard ICQ “I-Seek-You” accounts for instant messaging and social networking using the XMPP protocol protocol (older AOL clients). Blocks outgoing and incoming ports used by ICQ.
  • ICQ Lite – Chat communication using a simplified version of ICQ. Blocks all outgoing and incoming ports used by the protocol.
  • MSN Messenger – Microsoft MSN Messenger. Blocks all outgoing and incoming ports used by the client application.
  • Trillian – The Trillian Instant messaging third-party software allowing commuication via AIM, MSN, ICQ, Yahoo, and IRC accounts. protocol communicating on any chat network. Blocks all outgoing and incoming ports used by the protocol.
  • Windows Messenger – Microsoft Windows Live Messenger instant messaging. Blocks all outgoing and incoming ports used by the protocol.
  • XMPP – Messaging in the XMPP Extensible Messaging and Presence Protocol, an open, XML-based protocol used for server-to-server instant messaging by Facebook and other websites protocol. Blocks outgoing port 5222.
  • Yahoo Messenger – Messaging via a YAHOO Yahoo (Yet Another Hierarchical Officious Oracle) offers email, an online chat protocol, and instant messaging accounts with file transfer and social network posting capability account. Blocks all outgoing and incoming ports used by protocol.
  • Other Chat/IM and HTTP/HTTPS  – Chat and Instant Messaging protocols PLUS web sites. Blocks outgoing ports 80, 443, 8008, 8080, and 8088 plus 1863, 5190, 6660-6669.
  • Kazaa – Peer-to-peer communication via KAZAA A file sharing, peer-to-peer protocol used to share media between computers that may violate policies, a file-sharing application commonly used to download MP3 and video files. Blocks all outgoing and incoming ports used by the protocol.
  • Kazaa Lite – The Lite version of the Kazaa protocol. Blocks all outgoing and incoming ports used by the protocol.

To block additional Outgoing/Incoming Ports

If you notice inappropriate activity at non-standard ports, you can block the ports at the bottom of this panel. All ports in the Additional Outgoing Ports and Additional Incoming Ports lists will be blocked. Be sure to avoid blocking a port that a user may rely on for normal work.

  1. At the top of the panel, you must check Block Internet Access and choose Block Selected Internet Access to activate these entry boxes.
  2. Click in the Outgoing or Incoming Ports list.
  3. Type the port or ports to block. Separate multiple port numbers with a space or comma.  

Save your changes and close the window

Click OK at the bottom of the panel to save your changes, or Cancel to remove them. The window closes.

Related Topics

Block Chat/IM Settings

Managing Web Filtering

When to Block

Veriato Administrator Guide

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