3. Samba Services

four main service
. authentication and authorization of users
. file and printer sharing
. name resolution
. browsing

related
. smbclient
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2. Network File Service(NFS)

Packages: nfs-utils
Daemons: rpc.nfsd(1),rpc.mountd(1),rpc,rquotad(1),rpciod(1),rpc.statd(2),rpc.lockd(2)
Scripts: /etc/init.d/nfs(1),/etc/init.d/nfslock(2)
Ports: 2049, Others assign by portmap(111)
Configuration: /etc/exports
Related: portmap, tcp_wrappers

#rpcinfo -p (verify that(RPC) service are running)
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Network File Sharing Service

1. File Transfer Protocol (FTP)

Packages: vsftpd
Deamon: /usr/sbin/vsftpd
Script: /etc/init.d/vsftpd
Ports:21(ftp),20(ftp-data)
Confituration: /etc/vsftpd/vsftpd.conf, /etc/vsftpd/ftpuser(黑名單)
Log: /var/log/xferlog
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Filesystem

entry in #/etc/fstab

partitions
-------------------------
5(or f)--Extended
82 --linux swap
83 --linux (ext2, ext3)
8e --linux LVM
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Lab

1. using cron

job runs every ten minutes today between the hours of 0800 and 1700

#crontab -e
*/10 8-17 * * * /usr/bin/free

#Mail to user
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