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41 Cards in this Set
- Front
- Back
What is used to replace rlogin? Why?
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Ssh- better security
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What is Samba used for?
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sharing files with Windows
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What two daemons make up Samba?
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smbd and nmbd
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In Samba, what does smbd do?
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file sharing
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In Samba, what does nmbd do?
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name resolution
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What file is used to configure Samba?
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smb.conf
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What interface is best for configuring Samba?
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SWAT (Samba Web Administration Tool)
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What port does Samba run on?
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901
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Why is it considered best practice to put TFTP on a dedicated directory?
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the TFTP daemon can't access files outside of its root directory
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What security feature prevents unauthorized users from creating files with TFTP?
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by default, files must exist before they can be written to
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What security feature prevents unauthorized users from creating files with TFTP?
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by default, files must exist before they can be written to
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What is the lpd daemon responsible for?
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listening to print requests and spooling them
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What program is used to submit print jobs?
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lpr
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What is the Linux web proxy?
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Squid
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What is Linux's file server?
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Samba
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What is the most widely-used Mail Transfer Agent (MTA)?
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Sendmail
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What are two alternatives to Sendmail?
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Qmail and PostFix
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What is the most widely used name server?
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BIND
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In what two forms is software usually distributed in?
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Binary and source code
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What three forms do binary distributions usually come in?
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tarball; RPM (RedHat Package Manager); and DEB (Debian)
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What three limitations do tarballs have?
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can't carry dependency information; can't execute instructions; difficult to figure out what package a file came from
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What two partitions are always needed?
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root and swap
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What is the minimum recommended size of the swap partition?
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128Mb
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What is the recommended minimum size for the / (root) partition?
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250Mb
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What is the recommended minimum size for the /var partition?
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250Mb
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What is the /var partition used for?
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files that change frequently
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On what partition are most applications installed?
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/usr
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What is the recommended minimum size of the /usr partition?
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500Mb+
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What partition are kernels stored in?
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/boot
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What is the recommended minimum size for the /boot partition?
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16Mb
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On what partition are users' home directories stored?
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/home
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On what partition are users' home directories stored?
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/home
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What is the recommended minimum size of the /home directory?
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500Mb+
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What is the standard filesystem for Linux?
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ext2
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What is the biggest weakness of the ext2 filesystem?
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doesn't handle unexpected shutdowns well
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What is the biggest weakness of the ext2 filesystem?
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doesn't handle unexpected shutdowns well
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How does UNIX store passwords?
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as a hash (one-way encrypted)
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What does shadowing do?
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makes it more difficult to decrypt hashes
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What does MD5 do?
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makes hashing much stronger
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What method is normally used to centrally store passwords?
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NIS (Network Information Service)
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What are two alternatives to NIS?
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LDAP and Kerberos
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