12 03 2014
Free Download Latest 2014 Pass4sure&Lead2pass Red Hat RHCE EX300 Exam Questions (16-20)
mavis | Redhat Dumps, RHCE EX300 Dumps
Question 16
Configure ssh to allow user harry to access, reject the domain t3gg.com (172.25.0.0/16) to access.
Answer:
# yum install -y sshd
# chkconfig sshd on
# vim /etc/hosts.deny
sshd: 172.25.0.0/16
# service sshd restart
Use iptables:
# chkconfig iptables on
# iptables -F
# iptables -X
# iptables -Z
# iptables -nvL
# iptables -A INPUT -s 172.25.0.0/16 -p tcp –dport 22 -j REJECT
# services iptables save
# iptables -nvL
# cat /etc/services (check port)
Question 17
Configure the ftp to allow anonymously download the directory /var/ftp/pub, and reject the domain t3gg.com to access.
Answer:
# yum install -y vsftpd
# chkconfig vsftpd on
# services vsftpd start
# vim /etc/hosts.deny
vsftpd: 172.25.0.0/16
OR
# iptables -A INPUT -s 172.25.0.0/16 -p tcp -dport 20:21 -j REJECT
# services iptables save
Question 18
Shutdown the /root/cdrom.iso under /opt/data, and set as boot automatically mount.
Answer:
# cd /opt/
# mkdir data
# mount -t iso9660 -o loop /root/cdrom.iso /opt/data
# vim /etc/fstab
/root/cdrom.iso /opt/data iso9660 defaults,loop 0 0
# mount -a
# mount
Question 19
Configure the web server, which can be accessed by
http://station.domain30.example.com.
Answer:
# yum install -y httpd
# chkconfig httpd on
# cd /etc/httpd/conf/
# vim httpd.conf
NameVirtualHost 172.24.30.5:80
<VirtualHost 172.24.30.5:80>
DocumentRoot /var/www/html/
ServerName tation.domain30.example.com
</VirtualHost>
# service httpd restart
Question 20
Configure the web server, and implement the virtual host.
http://www.domain30.example.com can access the pages under the directory:
http://ip/dir/example.html. And make sure, http://station.domain30.example.com can also
access the previous content.
Answer:
# mkdir -p /www/virtual
# cd /www/virtual
# wget http://ip/dir/example.com
# cp example.com index.html
# se manage fcontext -a -t httpd_sys_content_t ‘/www（/.*)?’
restorecon -vRF /www
# vim /etc/httpd/conf/httpd.conf (Add new VirtualHost)
<VirtualHost 172.24.30.5:80>
DocumentRoot /www/virtual/
ServerName www.domain30.example.com
</VirtualHost>
# chcon -R –reference=/var/www/html/ /www/
# service httpd restart
Use elinks to test.
OR
# mkdir -p /www/virtual
# cd /www/virtual
# wget http://ip/dir/example.html
# mv example.html index.html
# chcon -R –reference=/var/www/html/ /www/
# ls -ldZ /www/virtual
# vim /etc/httpd/conf/httpd.conf
NameVirtualHost *:80
<VirtualHost *:80>
DocumentRoot /var/www/html/
ServerName station.domain30.example.com
</VirtualHost>
<VirtualHost *:80>
DocumentRoot /www/virtual/
ServerName www.domain30.example.com
</VirtualHost>
# service httpd restart
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