Secure Networks Practical Skills Test - Semester 1, January 2020

This document presents a comprehensive solution for the Secure Networks Practical Skills Test, a practical assessment for a CCNP Security module. The solution encompasses the configuration of various network devices and security protocols, including routers, switches, and an ASA firewall. Router configurations cover basic security settings like password policies, enable secret, and banner messages, along with AAA local authentication and SSH setup. Switch configurations involve trunking, port security, and VLAN assignments. The solution also includes the setup of Site-to-Site IPsec VPNs, firewall and IPS settings on a router, and ASA basic security and firewall configurations. The ASA configuration details interface assignments, IP addressing, DHCP server setup, and essential security features like NAT and inspection. The solution also addresses configurations for IPS signatures and categories. This detailed solution provides a complete, practical guide to securing a network environment.

Running head: SECURE NETWORKS
Secure networks
Name of the Student
Name of the University
Author’s Note

1SECURE NETWORKS
Table of Contents
Configure Basic Router Security.....................................................................................................2
Configure Switch Security...............................................................................................................2
Configure AAA Local Authentication.............................................................................................4
Configure SSH.................................................................................................................................4
Configure Site-to-Site IPsec VPNs..................................................................................................5
Configure Firewall and IPS Settings...............................................................................................6
Configure ASA Basic Security and Firewall Settings.....................................................................8

2SECURE NETWORKS
Configure Basic Router Security
!R1
conf t
security passwords min-length 10
enable secret cisco12345
service password-encryption
line console 0
password cisco12345
exec-timeout 15 0
login
logging synchronous
banner motd $Unauthorized access strictly prohibited and prosecuted to the full
extent of the law!$
end
!R2
conf t
enable secret cisco12345
line vty 0 4
password ciscovtypa55
exec-timeout 15 0
login
end
Configure Switch Security
!S1
conf t

3SECURE NETWORKS
!Trunking
!S1 and S2
conf t
interface FastEthernet 0/1
switchport mode trunk
switchport trunk native vlan 99
switchport nonegotiate
end
!S1 Port Security
conf t
interface FastEthernet 0/6
switchport mode access
spanning-tree portfast
spanning-tree bpduguard enable
shutdown
switchport port-security
switchport port-security mac-address sticky
no shutdown
interface range f0/2 – 5 , f0/7 – 24 , g0/1 - 2
shutdown
end
Configure AAA Local Authentication
!R1
conf t
username Admin01 privilege 15 secret Admin01pass
aaa new-model

4SECURE NETWORKS
aaa authentication login default local enable
end
Configure SSH
!R1
conf t
ip domain-name ccnasecurity.com
crypto key generate rsa
1024
ip ssh version 2
line vty 0 4
transport input ssh
end
Secure Against Login Attacks
!R1
conf t
login block-for 60 attempts 2 within 30
login on-failure log
Configure Site-to-Site IPsec VPNs
!R1
conf t
access-list 101 permit ip 172.20.1.0 0.0.0.255 172.30.3.0 0.0.0.255
crypto isakmp policy 10
encryption aes 256

5SECURE NETWORKS
authentication pre-share
hash sha
group 5
lifetime 3600
exit
crypto isakmp key ciscovpnpa55 address 10.20.20.1
crypto ipsec transform-set VPN-SET esp-aes 256 esp-sha-hmac
crypto map CMAP 10 ipsec-isakmp
set peer 10.20.20.1
set pfs group5
set transform-set VPN-SET
match address 101
exit
interface S0/0/0
crypto map CMAP
end
!R3
conf t
access-list 101 permit ip 172.30.3.0 0.0.0.255 172.20.1.0 0.0.0.255
crypto isakmp policy 10
encryption aes 256
authentication pre-share
hash sha
group 5
lifetime 3600
exit
crypto isakmp key ciscovpnpa55 address 10.10.10.1

6SECURE NETWORKS
crypto ipsec transform-set VPN-SET esp-aes 256 esp-sha-hmac
crypto map CMAP 10 ipsec-isakmp
set peer 10.10.10.1
set transform-set VPN-SET
match address 101
exit
interface S0/0/1
crypto map CMAP
end
Configure Firewall and IPS Settings
!R3
conf t
!Firewall configs
zone security IN-ZONE
zone security OUT-ZONE
access-list 110 permit ip 172.30.3.0 0.0.0.255 any
access-list 110 deny ip any any
class-map type inspect match-all INTERNAL-CLASS-MAP
match access-group 110
exit
policy-map type inspect IN-2-OUT-PMAP
class type inspect INTERNAL-CLASS-MAP
inspect
zone-pair security IN-2-OUT-ZPAIR source IN-ZONE destination OUT-ZONE
service-policy type inspect IN-2-OUT-PMAP
exit

7SECURE NETWORKS
interface g0/1
zone-member security IN-ZONE
exit
interface s0/0/1
zone-member security OUT-ZONE
end
!IPS configs
mkdir ipsdir
conf t
ip ips config location flash:ipsdir
ip ips name IPS-RULE
ip ips signature-category
category all
retired true
exit
category ios_ips basic
retired false
exit
<Enter>
interface s0/0/1
ip ips IPS-RULE in
Configure ASA Basic Security and Firewall Settings
CCNAS-ASA
enable
conf t
interface vlan 1

8SECURE NETWORKS
nameif inside
security-level 100
ip address 192.168.10.1 255.255.255.0
interface vlan 2
nameif outside
security-level 0
no ip address dhcp
ip address 209.165.200.234 255.255.255.248
exit
hostname CCNAS-ASA
domain-name ccnasecurity.com
enable password cisco12345
username admin password adminpa55
aaa authentication ssh console LOCAL
ssh 192.168.10.0 255.255.255.0 inside
ssh 172.30.3.3 255.255.255.255 outside
ssh timeout 10
dhcpd address 192.168.10.5-192.168.10.30 inside
dhcpd enable inside
route outside 0.0.0.0 0.0.0.0 209.165.200.233
object network inside-net
subnet 192.168.10.0 255.255.255.0
nat (inside,outside) dynamic interface
exit
conf t
class-map inspection_default
match default-inspection-traffic
exit

9SECURE NETWORKS
policy-map global_policy
class inspection_default
inspect icmp
exit
service-policy global_policy global