Web Server and Network Configuration

This solved assignment details the configuration of a web server on a Cisco router. It covers setting up HTTP services, configuring DNS to associate an IP address with a domain name ('modinilimanaresh.csu.edu.au'), simulating a client PC requesting a web page from the server, and implementing Access Control Lists (ACL) for security by blocking specific TCP ports while allowing others. The assignment emphasizes the importance of ACLs in securing network connections.

CLIENT– SERVER Networking
Assessment 3
Modinili Manaresh
[e-mail]
Abstract
It is a network designing project. To implement Network Address, DHCP, ACL and etc.

Executive Summary
It is a basic networking design project. It is a client-server model. This type of model is used to
know how the system is communicated with the remote system (different network) in real life. We need
to implement the IP routing, DHCP, DNS and ACL configuration. After configuration of DHCP, Client do
not need any previous network knowledge. They can easily connect to the server (dynamically
generated IP address allocated in new Client system). In web server, I have changed the home page title
as my name. If client request the web page, DNS server receives the request and redirect to the HTTP
Server. HTTP server replies to the client. The requested data displayed on browser. I have block the TCP
port of 23 in server IN ward interface, so no one can access the server TCP port. I have tested all the
configuration
Network Addressing
I choose the Client network as 192.168.1.0/24. Server network is 192.168.100.0/24.
Both these network, the number of usable IP address is 254. But Connection between Client and Router
needs only two usable IP. So that I have configured the subnet mask as 255.255.255.252 (/30)
LAN Network Address Subnet Mask IP Range Number of
host
Client 192.168.1.0 255.255.255.0 192.168.1.1 to
192.168.1.254
254
Server 192.168.100.0 255.255.255.0 192.168.100.1 to
192.168.100.254
254
Client-Server 200.200.200.0 255.255.255.252 200.200.200.1 to
200.200.200.2
2
Interface Addressing
Device Interface Network
Address
Subnet Mask Default
Gateway
ClientRouter Gi 0/0 192.168.1.1 255.255.255.0 -
ClientRouter S 0/0/0 200.200.200.1 255.255.255.252 -
ClientPC1 Fa 0 192.168.1.2 255.255.255.0 192.168.1.1
ClientPC2 Fa 0 192.168.1.3 255.255.255.0 192.168.1.1
ServerRouter S 0/0/0 200.200.200.2 255.255.255.252 -
ServerRouter Gi 0/0 192.168.100.1 255.255.255.0 -
Server Fa 0 192.168.100.2 255.255.255.0 192.168.100.1
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Task 1 – Setting Up a Network
I have used two routers, one Switch, two pc and one server in this network. Router to Router
connection is serial link and other link is Ethernet or fast or Gigabit Ethernet
Network Topology
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Interface Configuration
Client Router Giga Ethernet IP Addressing
IP Address command is used to set the IP address to the specified interface
First enter into configuration mode, then configure the gigabitEthernet0/0 interface.
IP Address Command Syntax is,
IP ADDRESS Address Subnetmask
NO SHUT command is used to activate the interface (UP state)
ClientRouter#conf t
ClientRouter(config)# interface gigabitEthernet 0/0
ClientRouter(config-if)# ip address 192.168.1.1 255.255.255.0
ClientRouter(config-if)# no shut
ClientRouter(config-if)# exit
After setting the IP address into Giga Bit Ethernet, we can check the interface status which is UP
or DOWN using SHOW IP INTERFACE BRIEF command
Client Router Serial IP Addressing
In Client Serial Interface, it is DCE, so we need to set the clock rate at this port
ClientRouter#conf t
ClientRouter(config)# interface Serial0/0/0
ClientRouter(config-if)# ip address 200.200.200.1 255.255.255.252
ClientRouter(config-if)# clock rate 64000
ClientRouter(config-if)# no shut
ClientRouter(config-if)# exit
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Server Router Serial IP Addressing
In serial interface, both end of interface should be addressed. After that only interface be in UP
status,
ServerRouter#conf t
ServerRouter (config)# interface Serial0/0/0
ServerRouter (config-if)# ip address 200.200.200.2 255.255.255.252
ServerRouter (config-if)# no shut
ServerRouter (config-if)# exit
Server Router Giga Ethernet IP Addressing
ServerRouter #conf t
ServerRouter (config)# interface gigabitEthernet 0/0
ServerRouter (config-if)# ip address 192.168.100.1 255.255.255.0
ServerRouter (config-if)# no shut
ServerRouter (config-if)# exit
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Client PC IP Configuration
In PC, open the Desktop tab, we set the static IP address with default gateway (Client Router IP
address)
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Server Ethernet IP Configuration
In Server, open the Desktop tab, we set the static IP address with default gateway (Server
Router IP address)
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Static Route Configuration
IP Route command is used to set the static IP addressing in both end (Client and Server). It is
also an administrative based configuration.
ClientRouter #conf t
ClientRouter (config)# ip route 192.168.100.0 255.255.255.0 200.200.200.2
ServerRouter#conf t
ServerRouter (config)# ip route 192.168.1.0 255.255.255.0 200.200.200.1
Ping from Client PC2 to Server
I have tested the connection between PC2 and Server using PING command
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Tracert from Client PC 2 to Server
Tracert command is used to find the path between source and destination network. Here I try to
find the path between Client PC and Server
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Task 2 – Configuring
I have added DNS Server from Task 1
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DHCP Configuration
DHCP uses IP address range, as DHCP commands a particular interval of renewal of specified IP
addresses. DHCP supports both IPV4 and IPV6 address. DHCP can be used to allocate not only IP
addresses, but also a extensive range of added network constraints like default gateway and DNS server
address
First we create the DHCP Pool and set the network address into that Pool and also set the
default router IP address. Administrator set this configuration initially. Hereafter, admin do not maintain
or manage the client system
ClientRouter #conf t
ClientRouter (config)# ip dhcp pool dhcp-pool
ClientRouter (dhcp-config)# network 192.168.1.0 255.255.255.0
ClientRouter (dhcp-config)# default-router 192.168.1.1
ClientRouter (dhcp-config)# dns-server 192.168.100.3
ClientRouter (dhcp-config)#exit
If you want to remove the IP address from DHCP server generation, we need to set the excluded
address
ClientRouter (config)# ip dhcp excluded-address 192.168.1.1
For finding the Web Server, we need to set the DNS server address into DHCP Pool. This
configuration is used to reach the web server from Client System
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After Configuration of DHCP, we need to change the IP configuration as DHCP in Client PC.
Dynamic IP address is generated by DHCP server
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Web Server Configuration
In Server, Service tab contains various Services. We need to activate the HTTP services. If you
want to create or delete or modify the web page in that area
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DNS Configuration
We need to set the IP address as web address. Here, we have set the 192.168.100.2 to
modinilimanaresh.csu.edu.au
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Client Request the Web Page from Client PC1
Client PC requested the web page. Web Server replied the web content to the client and display
the web page in web browser
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ACL Configuration
ACL is very important configuration in web server. It is a secure way of network connection using
ACL. It is used to avoid Hacker’s Attack. ACL is used to block or allow the IP Address or Port. Here, we
deny the TCP port and allow other ports. This configuration is applied on Server Serial Interface
Here we used extended ACL (100 to 199 and etc.). We set to block the TCP port and allow /
ServerRouter#conf t
ServerRouter (config)# access-list 102 deny tcp any any eq telnet
ServerRouter (config)# access-list 102 permit ip any any
ServerRouter (config)# interface Serial0/0/0
ServerRouter (config-if)# ip address 200.200.200.2 255.255.255.252
ServerRouter (config-if)# ip access-group 102 in
ServerRouter (config-if)# exit
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References
 Basic Router Configuration Using Cisco Configuration Professional - Cisco. (n.d.). Retrieved from
https://www.cisco.com/c/en/us/support/docs/cloud-systems-management/configuration-
professional/111999-basic-router-config-ccp-00.html
 Router DHCP Configuration with Packet Tracer - www.ipcisco.com : www.ipcisco.com. (n.d.).
Retrieved from http://ipcisco.com/router-dhcp-configuration-with-packet-tracer/
 Configure Static Routing in Packet Tracer - CCNA - Technig. (n.d.). Retrieved from
https://www.technig.com/configure-static-routing-cisco-router/
 Configuring IP Access Lists - Cisco. (n.d.). Retrieved from
https://www.cisco.com/c/en/us/support/docs/security/ios-firewall/23602-confaccesslists.html
 DNS on packet tracer: ~ Easy Learning. (n.d.). Retrieved from
http://cs-study.blogspot.in/2012/10/dns-on-packet-tracer.html
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