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35 lines
1.2 KiB
Groff
35 lines
1.2 KiB
Groff
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.TH SAFE_FINGER 8 "21th June 1997" Linux "Linux Programmer's Manual"
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.SH NAME
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safe_finger \- finger client wrapper that protects against nasty stuff
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from finger servers
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.SH SYNOPSIS
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.B safe_finger [finger_options]
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.SH DESCRIPTION
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The
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.B safe_finger
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command protects against nasty stuff from finger servers. Use this
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program for automatic reverse finger probes from the
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.B tcp_wrapper
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.B (tcpd)
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, not the raw finger command. The
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.B safe_finger
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command makes sure that the finger client is not run with root
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privileges. It also runs the finger client with a defined PATH
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environment.
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.B safe_finger
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will also protect you from problems caused by the output of some
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finger servers. The problem: some programs may react to stuff in
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the first column. Other programs may get upset by thrash anywhere
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on a line. File systems may fill up as the finger server keeps
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sending data. Text editors may bomb out on extremely long lines.
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The finger server may take forever because it is somehow wedged.
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.B safe_finger
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takes care of all this badness.
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.SH SEE ALSO
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.BR hosts_access (5),
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.BR hosts_options (5),
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.BR tcpd (8)
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.SH AUTHOR
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Wietse Venema, Eindhoven University of Technology, The Netherlands.
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