Bug#1739: syslog is uncommented in /etc/services by default
Hallo Ian Jackson!
}Peter Tobias asks me in email:
}> Ian Jackson wrote:
}> > Package: netbase
}> > Version: 1.19-1
}> > I've now tracked down what it is that keeps reenabling my syslog's
}> > network listening: the netbase package's /etc/services file has syslog
}> > uncommented.
}> > Commenting out the /etc/services entry is of course a very nasty way
}> > of nixing syslog's usually-undesirable network listening feature, but
}> > we should leave things that way until the syslog package is improved.
}> Why do you think it's a bug in the netbase package? This feature (and
}> the syslog entry in /etc/services) is enabled on the systems that
}> support it (at least on those I have access to). And I see no problem
}> having it enabled by default. Anyway, it shouldn't be "fixed" by
}> commenting out the syslog service in /etc/services. It should be fixed
}> in the syslogd package.
}It's a security problem, because it allows any machine anywhere on the
}Internet to make your maching completely unusable very easily. syslog
}writes its logfiles to disk synchronously, and the logs can fill up
}the disk too.
Yes. We (the sysklogd developers) found this problem long time
ago. Future releases will have a switch (-r) that has to be set if any
message should be received from remote. Otherwise the syslogd won't
open the socket for reading. This to look in the future...
}Most people do not need or want the remote logging feature.
}It should therefore be disabled by default.
}I agree that it shouldn't be fixed by commenting out the syslog entry
}in /etc/services, but that seems to be the only avenue open at the
}moment. Please keep the entry commented out until the syslog package
I have one more comment to make. What do you think about an
explanatery text when installing the sysklogd package. This could be
done in my postinst script (if I'm not mistaken).
/ Martin Schulze * firstname.lastname@example.org * 26129 Oldenburg /
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