Learning Networking: August 2014

Thursday, August 28, 2014

Online packet capture library: Address Resolution Protocol - ARP (with VLAN TAG)

Title : Address Resolution Protocol with VLAN tag

Protocol : ARP + 802.1Q (VLAN tag)

RFC : RCF 826 and RFC 903

Network Diagram for capture:

Link for packet capture online:

https://www.cloudshark.org/captures/55b75540f565

Dropbox link for download:

https://www.dropbox.com/s/cprve25x0d0xdxw/ARP_with_VLAN_100_P-BIT_0.pcap?dl=0

Disclaimer
Information above is either from RFCs or it's Googled. This blog is result of my enthusiasm, desire and hard work to lean networking and share my leanings. Most of the times I’ll be using GNS3 network simulator. All I've here is collection of my findings, thanks to Google. Please do not ask for any of the software from CISCO/Juniper, it's better to Google it and try your luck.

Online packet capture library: Address Resolution Protocol - ARP (without VLAN TAG)

Title : Address Resolution Protocol without VLAN tag

Protocol : ARP

RFC : RCF 826 and RFC 903

Network Diagram for capture:

Link for packet capture online:

https://www.cloudshark.org/captures/a64385ab3166

Dropbox link for download:

https://www.dropbox.com/s/du9645avvhykhsn/ARP_without_VLAN_TAG.pcap?dl=0

Disclaimer
Information above is either from RFCs or it's Googled. This blog is result of my enthusiasm, desire and hard work to lean networking and share my leanings. Most of the times I’ll be using GNS3 network simulator. All I've here is collection of my findings, thanks to Google. Please do not ask for any of the software from CISCO/Juniper, it's better to Google it and try your luck.

Sunday, August 24, 2014

Configuring RIP with MD5 authentication on Cisco routers

Title : Configuring RIPv2 + MD5 authentication on Cisco 7200 router

In this tutorial:

Configuring RIPv2 + MD5 authentication.
Verify RIPv2 + MD5 authentication
View routes learned on Cisco 7200

Topology:

Configuration on Local Router (R1) :

key chain RIPv2keychain
key 1234
key-string RIPv2keystring
!

interface Loopback10
ip address 11.11.11.11 255.255.255.0
no ip directed-broadcast
!
interface FastEthernet0
ip address 10.1.2.1 255.255.255.0
no ip directed-broadcast
ip rip authentication mode md5
ip rip authentication key-chain RIPv2keychain
!
router rip
version 2
redistribute connected
network 10.0.0.0
no auto-summary
!

Configuration on Remote Router (R2):

!
key chain RIPv2keychain
key 1234
key-string RIPv2keystring
!
interface Loopback10
ip address 22.22.22.22 255.255.255.0
no ip directed-broadcast
!
interface FastEthernet0
ip address 10.1.2.2 255.255.255.0
no ip directed-broadcast
ip rip authentication mode md5
ip rip authentication key-chain RIPv2keychain
!
router rip
version 2
redistribute connected
network 10.0.0.0
no auto-summary
!

Verify the routes on R1 and R2

R1#show ip route

# ---- Output Truncated ---- #

     22.0.0.0/24 is subnetted, 1 subnets
R       22.22.22.0 [120/1] via 10.1.2.2, 00:00:20, FastEthernet0
     10.0.0.0/24 is subnetted, 1 subnets
C       10.1.2.0 is directly connected, FastEthernet0
     11.0.0.0/24 is subnetted, 1 subnets
C       11.11.11.0 is directly connected, Loopback10
R1#

R2#show ip route

# ---- Output Truncated ---- #

     22.0.0.0/24 is subnetted, 1 subnets
C       22.22.22.0 is directly connected, Loopback10
     10.0.0.0/24 is subnetted, 1 subnets
C       10.1.2.0 is directly connected, FastEthernet0
     11.0.0.0/24 is subnetted, 1 subnets
R       11.11.11.0 [120/1] via 10.1.2.1, 00:00:25, FastEthernet0
R2#

Disclaimer
Information above is either from RFCs or it's Googled. This blog is result of my enthusiasm, desire and hard work to lean networking and share my leanings. Most of the times I’ll be using GNS3 network simulator. All I've here is collection of my findings, thanks to Google. Please do not ask for any of the software from CISCO/Juniper, it's better to Google it and try your luck.

Saturday, August 23, 2014

Online packet capture library: Routing Information Protocol version 2 with MD5 authentication

Title : Routing Information Protocol version 2 with MD5 authentication

Protocol : RIP version 2 with MD5

Network Diagram for capture:

Link for packet capture online:

https://www.cloudshark.org/captures/89b6afc2a890

Dropbox link for download:

https://www.dropbox.com/s/arwtteb8v70o9au/RIP_v2_Authentication_MD5.pcap?dl=0

Disclaimer
Information above is either from RFCs or it's Googled. This blog is result of my enthusiasm, desire and hard work to lean networking and share my leanings. Most of the times I’ll be using GNS3 network simulator. All I've here is collection of my findings, thanks to Google. Please do not ask for any of the software from CISCO/Juniper, it's better to Google it and try your luck.

Monday, August 18, 2014

Online packet capture library: CDP version 2

Title : Cisco Discovery Protocol version 2

Protocol : CDP version 2

Network Diagram for capture:

Link for packet capture online:

https://www.cloudshark.org/captures/e83f3e2772cf

Dropbox link for download:

https://www.dropbox.com/s/9zz6tld9dndlmpg/CDP_Neighbor.pcap

Disclaimer
Information above is either from RFCs or it's Googled. This blog is result of my enthusiasm, desire and hard work to lean networking and share my leanings. Most of the times I’ll be using GNS3 network simulator. All I've here is collection of my findings, thanks to Google. Please do not ask for any of the software from CISCO/Juniper, it's better to Google it and try your luck.

Saturday, August 16, 2014

Online packet capture library: RIP version 2 with Plain Text Authentication

Title : RIPv2 with Plain Text Authentication.

Protocol : RIPv2 + Plain Text Authentication.

Network Diagram for capture:

Link for packet capture online:

https://www.cloudshark.org/captures/73e0815b1f96

Dropbox link for download:

https://www.dropbox.com/s/6ftjkvm55vfba2j/RIP_v2_Authentication_Simple_Password.pcap

Friday, August 15, 2014

Online packet capture library: RIP version 2, Request – Response datagram exchange

Title : RIPv2, Request – Response datagram exchange.

Protocol : RIPv2

Network Diagram for capture:

Link for packet capture online:

https://www.cloudshark.org/captures/314ab8871b7f

Dropbox link for download:

# Coming soon

Disclaimer

Information above is either from RFCs or it's Googled. This blog is result of my enthusiasm, desire and hard work to lean networking and share my leanings. Most of the times I’ll be using GNS3 network simulator. All I've here is collection of my findings, thanks to Google. Please do not ask for any of the software from CISCO/Juniper, it's better to Google it and try your luck.