system administration linux

Task 1: DNS configuration

Create the DNS zone file for the new zone “[login to view URL]’ and its reverse zone file. The new domain will occupy the IP ranges

[login to view URL]

a. Setup the DNS on the host dns.myuni.edu.au.

b. In their SOA records, serial numbers must be prefixed with the current date and have a two-digit update number

suffix: yyyymmddss, e.g. 2020090901

c. Add a single MX record for each zone with priority 50 which will direct to smtp.myuni.edu.au.

d. Add appropriate A records and PTR records for the following physical hosts:

[login to view URL] [login to view URL]

[login to view URL] [login to view URL]

[login to view URL] [login to view URL]

[login to view URL] [login to view URL]

e. Add “www” CNAMEs to “server2”; “dns” to “server1”; and “smtp” to “server1”.

(You can assume that the glue records will be handled by somebody else.)

Task 2: Network planning

A university has a main campus and a remote campus at another location. The default router to the Internet on the main campus has

an IP address of [login to view URL] The main campus network is connected to the Internet through a router called RouterA (Router A and

the default router are two different routers). The main campus has no more than 15000 staff and students. The remote campus

network is connected to the main campus network through a router called RouterB. The remote campus has no more than 200 staff

and students. All staff and students should be able to access to the Internet and to the resources on both campuses.

Your task is to plan the campus networks.

a) Propose appropriate subnet ranges for both campuses from the 16-bit prefix block of IPv4 private addresses (i.e.,

[login to view URL]) *R. Answer the question with your calculation.

b) Draw a diagram to depict the networks with IP addresses notated with CIDR notation assigned to the all interfaces of

bother routers for two campuses. Label the interfaces of routers on the diagram using eth0 or eth1.

c) Show the routing table of the RouterA that meets the requirements of both campuses. Show the columns of Destination,

Gateway, Genmask, Flags and Iface in the routing table as shown by the Linux command route.

Linux

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