ZyXEL NSA-220 Plus User Guide - Page 151
BitTorrent and Your Firewall, Firewall Blocking Incoming BitTorrent Requests - software download
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Chapter 7 Applications • IDP (Intrusion Detection and Prevention) to detect malicious packets within normal network traffic and take immediate action against them. • Anti-virus to check files you download for computer viruses. BitTorrent and Your Firewall The anti-virus feature on a firewall probably cannot check BitTorrent downloads for viruses, so use anti-virus software on your computer to scan the NSA for viruses. When you download using BitTorrent, many other BitTorrent users are also trying to download the file from you. The firewall slows this down because by default, it only allows traffic from the Internet in response to a request that originated on the LAN (it lets you get files from the Internet and blocks those on the Internet from getting files from you). Figure 40 Firewall Blocking Incoming BitTorrent Requests Incoming BitTorrent Requests Blocked Outgoing BitTorrent Request Allowed Corresponding BitTorrent Reply Allowed To speed up BitTorrent file transfers, configure your firewall's port forwarding to send incoming TCP port 6881 and UDP port 6880 connections to the NSA. You probably need to use your firewall's HTML (web-based) configuration interface to NSA-220 Plus User's Guide 151