https://maxstanley.uk/page/Recent content in Pages on Max Stanley's BlogHugo -- gohugo.ioen-gbWed, 16 Jun 2021 00:00:00 +0000https://maxstanley.uk/page/packet_tracer/securing_cisco/Wed, 16 Jun 2021 00:00:00 +0000https://maxstanley.uk/page/packet_tracer/securing_cisco/Configuring a Message of the Day Banner Whilst not a technical security solution, this is a policy security solution. The @’s can be replaced with any other delimeter. Device>enable Device#configure terminal Device(config)#banner motd @Message@ Securing Access to Priveleged Mode Plain-Text Password Setting the password. Device>enable Device#configure terminal Device(config)#enable password PASSWORD Viewing the password. Device>enable Device#show running-config | include enable password enable password PASSWORD Encrypting Plain-Text Passwords Setting the password. Device>enable Device#configure terminal Device(config)#enable password PASSWORD Device(config)#service password-encryption Viewing the password.https://maxstanley.uk/page/packet_tracer/small_static_routing/Wed, 16 Jun 2021 00:00:00 +0000https://maxstanley.uk/page/packet_tracer/small_static_routing/Start by placing 4 2911 Routers in a square configuration with each connected to 2 other routers. Attach a 2960 Switch to each of the routers. Attach a single PC to each of the switches. Network IP Network Router IP PC IP 0 192.168.0.0/24 192.168.0.1 192.168.0.100 1 192.168.1.0/24 192.168.1.1 192.168.1.100 2 192.168.2.0/24 192.168.2.1 192.168.2.100 3 192.168.3.0/24 192.168.3.1 192.https://maxstanley.uk/page/packet_tracer/2_networks_connected_via_router/Thu, 10 Jun 2021 00:00:00 +0000https://maxstanley.uk/page/packet_tracer/2_networks_connected_via_router/Laying out the network Place 4 PCs, 2 2960 (Switch) & 1 4331 (Router), attach the first 2 to 1 switch, and the 2nd 2 to the 2nd switch. Then we must configure the 4 PCs with IP Addresses to allow them to communicate, with the other computer in their local network. PC0: 192.168.0.2 PC1: 192.168.0.3 PC2: 192.168.1.2 PC3: 192.168.1.3 From PC1, Desktop > Command Prompt ping 192.168.0.2 From PC3, Desktop > Command Prompthttps://maxstanley.uk/page/packet_tracer/combining_2_switches_into_1_with_vlans/Thu, 10 Jun 2021 00:00:00 +0000https://maxstanley.uk/page/packet_tracer/combining_2_switches_into_1_with_vlans/Laying out the network Place 4 PCs, 1 2960 (Switch) & 1 4331 (Router), attach all 4 PCs to the swtich. Then we must configure the 4 PCs with IP Addresses to allow them to communicate, with the other computer in their local network. PC0: 192.168.0.2 PC1: 192.168.0.3 PC2: 192.168.1.2 PC3: 192.168.1.3 From PC1, Desktop > Command Prompt ping 192.168.0.2 From PC3, Desktop > Command Prompt ping 192.168.1.2 We should also configure the default gateways for each of the PCs.https://maxstanley.uk/page/packet_tracer/2_pcs_connected_via_switch/Thu, 10 Jun 2021 00:00:00 +0000https://maxstanley.uk/page/packet_tracer/2_pcs_connected_via_switch/Placing the two PCs into the network. And Network Devices > Switch > 2960, connect the PCs to the first 2 switch ports, using either Cross-Over or Direct connect cables. Then we must configure the 2 PCs with IP Addresses to allow them to communicate. PC0: 192.168.0.2 PC1: 192.168.0.3 From PC1, Desktop > Command Prompt ping 192.168.0.2 We can now see the two PCs are able to communicate with each other, whilst connected to a switch.https://maxstanley.uk/page/packet_tracer/2_pcs_direct_connect/Thu, 10 Jun 2021 00:00:00 +0000https://maxstanley.uk/page/packet_tracer/2_pcs_direct_connect/Placing the two PCs into the network. Select Connections > Cross-Over Cable. PCs can’t be connected using a direct connection cable. Then we must configure the 2 PCs with IP Addresses to allow them to communicate. PC0: 192.168.0.2 PC1: 192.168.0.3 Desktop > IP Configuration > Static IPv4 Address: From Above Subnet Mask: 255.255.255.0 From PC1, Desktop > Command Prompt ping 192.168.0.2 We can now see the two PCs are able to communicate with each other.https://maxstanley.uk/page/packet_tracer/multiple_switches_multiple_vlan_core_switch/Thu, 10 Jun 2021 00:00:00 +0000https://maxstanley.uk/page/packet_tracer/multiple_switches_multiple_vlan_core_switch/Laying out the network Place 8 PCs, 2 2960 (Switch) & 1 4331 (Router), attach 4 PCs to each of the swtiches. Then we must configure the 4 PCs with IP Addresses to allow them to communicate, with the other computer in their local network. PC0: 192.168.0.2 PC1: 192.168.0.3 PC2: 192.168.1.2 PC3: 192.168.1.3 PC4: 192.168.2.2 PC5: 192.168.3.2 PC6: 192.168.4.2 PC7: 192.168.4.3 We should also configure the default gateways for each of the PCs.https://maxstanley.uk/page/packet_tracer/reset_router/Thu, 10 Jun 2021 00:00:00 +0000https://maxstanley.uk/page/packet_tracer/reset_router/Router>enable Router#write erase <Enter> Router#reload <Enter> ... Would you like to enter the initial configuration dialog? [yes/no]: no<Enter> Router>https://maxstanley.uk/page/packet_tracer/voip_example/Thu, 10 Jun 2021 00:00:00 +0000https://maxstanley.uk/page/packet_tracer/voip_example/Layout 3 IP Phones connected to a 2960 Switch, with a 2811 Router connected to the switch. Each IP Phone has a PC on its PC Port. Configuring the Switch Creating VLANs Switch>enable Switch#configure terminal Switch(config)#vlan 20 Switch(config-vlan)#name PC Switch(config-vlan)#vlan 30 Switch(config-vlan)#name VOICE Configuring Ports Switch>enable Switch#configure terminal Switch(config)#interface fa0/24 Switch(config-if)#switchport mode trunk Switch(config-if)#interface range fa0/1-3 Switch(config-if-range)#switchport mode access Switch(config-if-range)#switchport access vlan 20 Switch(config-if-range)#switchport voice vlan 30 Switch(config-if-range)#interface range fa0/4-23 Switch(config-if-range)#switchport mode access Switch(config-if-range)#shutdown Switch(config-if-range)#interface range gig0/1-2 Switch(config-if-range)#switchport mode access Switch(config-if-range)#shutdown Save Configuration Switch>enable Switch#copy running-config startup-config Configuring the Router Configuring VLANs Router>enable Router#configure terminal Router(config)#interface fa0/0.