Bug 11612 - hosts.deny doesn't do option shell stuff.
hosts.deny doesn't do option shell stuff.
Product: Red Hat Linux
Classification: Retired
Component: tcp_wrappers (Show other bugs)
i386 Linux
medium Severity medium
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Assigned To: Preston Brown
Depends On:
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Reported: 2000-05-23 14:52 EDT by Robert Thomas
Modified: 2008-05-01 11:37 EDT (History)
0 users

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Doc Type: Bug Fix
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Last Closed: 2000-07-14 12:12:51 EDT
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Description Robert Thomas 2000-05-23 14:52:06 EDT
in hosts.deny, there is an optional field that allows you to do a command
shell (i.e. the last field).  I have it send me mail - like so:

in.ftpd :       ALL     :       (/usr/sbin/safe_finger -l @%h |
/usr/bin/Mail -s %d-%h thoma041@info.census.gov ) &

And hosts.allow has nothing in it ('cept the stuff that came in there from

If I grab Wietse's distribution of the wrappers (7.6 which is fairly old)
off of Porcupine, this works fine - it does the finger on the remote host
and mails it to me.

Also, the version that comes standard doesn't seem to be paranoid enough
(even on the enterprise w/ssl dist).  This may be intentional.

Comment 1 Henri Schlereth 2000-07-14 12:12:50 EDT
I have this in mine.

ALL : ALL: spawn (echo Probe from %h to %d at `date` | tee -a /var/log/tcpdeny.l
og |mail root )
Comment 2 Jeff Johnson 2000-07-27 18:05:34 EDT
This smells like incorrect syntax used in hosts.deny. Please reopen if I'm

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