Advanced Filesystem Management

Tools:

#tar

#dump
#restore
Ex:
dump -0u -f /dev/nst0 /dev/hda2
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LAB

%create a new filesystem

#fdisk -l /dev/sdb

Disk /dev/sdb: 3253 MB, 3253469184 bytes
101 heads, 62 sectors/track, 1014 cylinders
Units = cylinders of 6262 * 512 = 3206144 bytes

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Mounting NFS Filesystems

(1)掛載 /etc/fstab
#vi /etc/fstab

%add
#server1:/var/ftp/pub/RHEL5 /mnt/server1 nfs defaults,noauto 0 0
%remount
#mount -a

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Securing Data

Openssl

*generating digital certificates
#openssl genrsa -out server1.key.pem 1024
#openssl req -new -key server1.key.pem -out server1.csr.pem
#openssl req -new -key server1.key.pem -out server1.crt.pem


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Network Resource Access Controls

*Netfilter
#iptables

#chkconfig --list iptables
iptables 0:off 1:off 2:on 3:on 4:on 5:on 6:off

(1)Rule Targets
DROP, ACCEPT, LOG, REJECT, custom chain
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