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Block all fragments
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Blocks all incomplete (fragmented) IP data packets. Hackers
sometimes create fragmented packets to bypass or disrupt
network devices that read packet headers.
Caution: If you select this option, Zone Labs security software
will silently block all fragmented packets without
alerting you or creating a log entry. Do not select this
option unless you are aware of how your online connection
handles fragmented packets.
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Block local servers
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Prevents all programs on your computer from acting as
servers to the Trusted Zone. Note that this setting overrides
permissions granted in the Programs panel.
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Block Internet servers
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Prevents all programs on your computer from acting as
servers to the Internet Zone. Note that this setting overrides
permissions granted in the Programs panel.
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Enable ARP protection
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Blocks all incoming ARP (Address Resolution Protocol)
requests except broadcast requests for the address of the
target machine. Also blocks all incoming ARP replies
except those in response to outgoing ARP requests.
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Allow VPN Protocols
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Allows the use of VPN protocols (ESP, AH, GRE, SKIP)
even when High security is applied. With this option disabled,
these protocols are allowed only at Medium security.
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Allow uncommon protocols
at high security
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Allows the use of protocols other than ESP, AH, GRE, and
SKIP, at High security.
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Lock hosts file
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Prevents your computer's hosts file from being modified by
hackers through sprayer or Trojan horses. Because some
legitimate programs need to modify your hosts file in order
to function, this option is turned off by default.
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