Linux Set 4
Terms
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copy deck
- What is used to replace rlogin? Why?
- Ssh- better security
- What is Samba used for?
- sharing files with Windows
- What two daemons make up Samba?
- smbd and nmbd
- In Samba, what does smbd do?
- file sharing
- In Samba, what does nmbd do?
- name resolution
- What file is used to configure Samba?
- smb.conf
- What interface is best for configuring Samba?
- SWAT (Samba Web Administration Tool)
- What port does Samba run on?
- 901
- Why is it considered best practice to put TFTP on a dedicated directory?
- the TFTP daemon can't access files outside of its root directory
- What security feature prevents unauthorized users from creating files with TFTP?
- by default, files must exist before they can be written to
- What is the lpd daemon responsible for?
- listening to print requests and spooling them
- What program is used to submit print jobs?
- lpr
- What is the Linux web proxy?
- Squid
- What is Linux's file server?
- Samba
- What is the most widely-used Mail Transfer Agent (MTA)?
- Sendmail
- What are two alternatives to Sendmail?
- Qmail and PostFix
- What is the most widely used name server?
- BIND
- In what two forms is software usually distributed in?
- Binary and source code
- What three forms do binary distributions usually come in?
- tarball; RPM (RedHat Package Manager); and DEB (Debian)
- What three limitations do tarballs have?
- can't carry dependency information; can't execute instructions; difficult to figure out what package a file came from
- What two partitions are always needed?
- root and swap
- What is the minimum recommended size of the swap partition?
- 128Mb
- What is the recommended minimum size for the / (root) partition?
- 250Mb
- What is the recommended minimum size for the /var partition?
- 250Mb
- What is the /var partition used for?
- files that change frequently
- On what partition are most applications installed?
- /usr
- What is the recommended minimum size of the /usr partition?
- 500Mb+
- What partition are kernels stored in?
- /boot
- What is the recommended minimum size for the /boot partition?
- 16Mb
- On what partition are users' home directories stored?
- /home
- What is the recommended minimum size of the /home directory?
- 500Mb+
- What is the standard filesystem for Linux?
- ext2
- What is the biggest weakness of the ext2 filesystem?
- doesn't handle unexpected shutdowns well
- How does UNIX store passwords?
- as a hash (one-way encrypted)
- What does shadowing do?
- makes it more difficult to decrypt hashes
- What does MD5 do?
- makes hashing much stronger
- What method is normally used to centrally store passwords?
- NIS (Network Information Service)
- What are two alternatives to NIS?
- LDAP and Kerberos