Using MikroTik DHCP Server for Network Management · How to use DHCP Server Lease to monitor and...
Transcript of Using MikroTik DHCP Server for Network Management · How to use DHCP Server Lease to monitor and...
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Using MikroTik DHCP Server for Network Management
Engr. Norberto F. Inlayo III
MUM VIETNAM 2019
MUM VIETNAM 2019 | Engr. Norberto F. Inlayo III 1
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BULLETEngr. Norberto F. Inlayo III
Mikrotik Academy Trainer | Siena College of Taytay
Philippines
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MUM VIETNAM 2019 | Engr. Norberto F. Inlayo III
Siena College of Taytay
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About MikroTik Academy
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The MikroTik Academy Program is for educational institutions such as:❑ Universities❑ Technical Schools❑ Colleges❑ Vocational schools ❑ Other educational institutions.
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About MikroTik Academy
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Benefit for Students Opportunity to acquire the basic knowledge in RouterOS and MTCNA certificate during academic studies.
Benefit for Educational Institutions Opportunity to attract more students by offering MikroTik certification.
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About MikroTik Academy
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MikroTik offers ❑ Course outline ❑ Certification test ❑ Equipment (RouterBOARD routers) for the class ❑ Support and information
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About MikroTik Academy
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Requirements❑ • Motivation and resources❑ • Space and all the equipment needed for the labs❑ • Appropriate Internet access❑ • MikroTik Academy Trainer*❑ • Approved training materials
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About MikroTik Academy
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*Requirements for Academy Trainers❑ • Lecturer at the educational institution❑ • MTCNA certificate (score at least 75%)❑ • Any engineer level MikroTik certificate (score at least
75%).
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About MikroTik Academy
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Evaluation procedure (performed by Appointed Coordinators or MikroTik)
❑ • Validation check of the educational institution❑ • Verification of the Academy Trainer:–– Status at the educational institution–– Presence of required certifications❑ • Verification of training materials❑ • Verification of students
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About MikroTik Academy
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About MikroTik Academy
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CURRICULUM ENHANCEMENT THROUGH ACADEMIC INDUSTRY PARTNERSHIP WITH
MIKROTIK ACADEMY FOR INCREASED EMPLOYABILITY OF GRADUATES
Institutional Development and Innovation Grants (IDIG)
Concept Paper - Siena College of Taytay
Government Funded Project
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Using MikroTik DHCP Server for Network Management
Engr. Norberto F. Inlayo III
MUM VIETNAM 2019
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Objectives
For the Network Administrator ❑To be able to understand DHCP❑To be able to secure the DHCP network❑To be able to have an idea on how to use of
RouterOS DHCP in managing and monitoring devices in the network
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Reference:
❑wiki.mikrotik.com
❑forum.mikrotik.com
❑www.iana.org
Disclaimer:
All photos are copyright of their respective owners.
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What is DHCP?
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IP Address
Netmask
GatewayDNS
Other Options
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What is DHCP?
Dynamic Host Configuration Protocol:
❑For easy distribution of IP in a network
❑IP Assignment
❑Obtaining IP Settings/Options
❑Client-Server Protocol
Must only be used in TRUSTED Networks!
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Why is it Important?
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❑It let you manage the network in a central place.
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DHCP Port
UDP Port:
❑67 for Server
❑68 for Client
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DHCP: How does it work?
❑DHCP Discover
❑DHCP Offer
❑DHCP Request
❑DHCP Ack
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DHCP: Discover
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Asia Hotel Bangkok
Asia Pattaya Hotel
Asia Airport Hotel
Asia Cha Am Hotel
DHCP Servers
<Client: Src MAC Addr><Broadcast>
Src IP Addr:port<0.0.0.0:68>
Dst IP addr:port<255.255.255.255:67>
CLIENT SERVER
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DHCP: Offer
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Asia Airport Hotel
DHCP Server Addr:port<192.168.100.1:67>
<DHCP Server: Src MAC Addr><Broadcast>
Dst IP addr:port<255.255.255.255:68>
CLIENT SERVER
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DHCP: Request
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Src IP Addr:port<0.0.0.0:68>
<Client: Src MAC Addr><Broadcast>
Dst IP addr:port<192.168.100.1:67>
CLIENT SERVER
Asia Airport Hotel
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DHCP: ACK
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DHCP Server Addr:port<192.168.100.1:67>
<DHCP Server: Src MAC Addr><Broadcast>
Dst IP addr:port<255.255.255.255:68>
Asia Airport Hotel
CLIENT SERVER
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Securing the DHCP Network
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❖For Wireless Network:
❑Setting a Strong WIFI Password
❑Connect and Access List Registration
❖For Wireless and Wired Network
❑Setting the MikroTik Interface to ARP reply only
❑Creating a Login Captive Portal through Hotspot
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DHCP Settings For Network Management
❑DHCP Server
❑DHCP Network
❖DHCP Lease
For this presentation we focus on DHCP Lease Submenu
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DHCP Server
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Can Assign/Modify:❑ Name❑ Interface❑ Add Relay❑ Lease Time❑ Address Pool❑ DHCP Option Set❑ Src. Address❑ Delay Threshold❑ Authoritative❑ Bootp Support❑ Always Broadcast❑ Insert Queue❑ Add ARP for Leases❑ Use Radius❑ Lease Script
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DHCP Network
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Can Assign/Modify:❑ Address❑ Gateway❑ Netmask❑ No DNS❑ DNS Servers❑ Domain❑ WINS Servers❑ NTP Servers❑ CAPS Managers❑ Next Server❑ Boot File Name❑ DHCP Options❑ DHCP Options Set
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DHCP Options
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•Parameters sent by DHCP Server to the Client
•Custom Options / Vendor Extension
•Parameters must be included in the Parameter-List Attribute found at https://www.iana.org/assignments/bootp-dhcp-parameters/bootp-dhcp-parameters.xhtml
file
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DHCP Options
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How to use DHCP Server Lease to monitor and managed your network
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❖ LAB Pre-requisite❖ DHCP Lease❑ DHCP Options❑ Dynamic to Static❑ Adding Rate Limit❑ Address Listing❑ Extracting DHCP Lease Information thru SCRIPTING.
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Activity Pre-requisite:
❑DHCP Server should be configured.
❑There should be an IP Pool.
❑IPv4 for the devices should be set to obtain an IP address automatically.
Note: Devices with manually configured IP cannot be probed in the DHCP lease.
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DHCP Configuration: Wizard Setup
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DHCP Server – Setup Wizard
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1
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DHCP Server – Setup Wizard
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4
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DHCP Server – Setup Wizard
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9
10Congrats!
You have setup a DHCP Server.
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IP Address Pool
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192.168.100.54
192.168.100.52
192.168.100.53
192.168.100.51
192.168.100.55
Used:• To define IP
address range.• In DHCP Server and
Point to Point Server.
• To group IP address for further usage.
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Activity Pre-requisite:
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❑ IPv4 for the devices should be set to
obtain an IP address automatically.
❑ For MikroTik Devices DHCP Client should
be enabled.
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DHCP Server Lease
❑ DHCP server lease submenu is used to
monitor and manage server's leases.
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DHCP Leases
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DHCP Leases: How to Make Static?
Double click on any dynamically assigned IP to view the DHCP Lease options.
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1
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Click Make Static.
Close the DHCP Lease window and re-open it again.
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DHCP Leases: How to Make Static?
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Tick the box of Use Src. MAC Address to bind the IP to the MAC Address
Type the IP address that will be assigned to the client.
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DHCP Leases: Static
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4
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DHCP Leases
5
6 Time that the client may use the address
Server name which serves this client
Block access for this client
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DHCP Leases
8 Upload/Download Limit
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❑ It will be automatically be added on the Queue List
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DHCP Leases: Rate Limit
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❑ Type a name/group where the client device will be assigned.
MUM VIETNAM 2019 | Engr. Norberto F. Inlayo III 47
DHCP Leases: AddressList
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❑ It will automatically be added in the Address list which can be used in creating filter rules.
MUM VIETNAM 2019 | Engr. Norberto F. Inlayo III 48
DHCP Leases: Address List
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MUM VIETNAM 2019 | Engr. Norberto F. Inlayo III 49
DHCP Leases: Address List
❑ Create a Layer 7 Protocol
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MUM VIETNAM 2019 | Engr. Norberto F. Inlayo III 50
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❑ Create an Accept or Drop Filter Rule
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SCRIPT: Extracting Leases
MUM VIETNAM 2019 | Engr. Norberto F. Inlayo III
BIG THANKS to skot for this
post contribution @ Mikrotik Forum
/ip dhcp-server lease:foreach i in=[find] do={:put ([get $i address].",".[get $i mac-address].",".[get $i client-id].",".[get $i server])
}
❑ This script will help you extract the necessary information form the lease that you want to include
in your CSV file.
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SCRIPT: Extracting Leases
MUM VIETNAM 2019 | Engr. Norberto F. Inlayo III
/ip dhcp-server lease> :foreach I in=[find] do=( :put {[get $i
Note: Typing this script and pressing will show the
available options that you may include in the command.
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SCRIPT: Extracting Leases
MUM VIETNAM 2019 | Engr. Norberto F. Inlayo III
:foreach i in=[find] do={ :put ([get $i block-access].",".[get $i client-id].",".[get $i server]) }
❑ Here is the script if we want to extract the list of block-access client with client-id and dhcp-server included
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SCRIPT: Extracting Leases
MUM VIETNAM 2019 | Engr. Norberto F. Inlayo III
❑Highlight the extracted information and copy paste it in a text file in your desktop.
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SCRIPT: Extracting Leases
MUM VIETNAM 2019 | Engr. Norberto F. Inlayo III
❑ Create a text file in your desktop.
❑ Copy paste the extracted fields from the terminal.
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SCRIPT: Extracting Leases
❑ Change the Extension Name of the Text File to CSV File
❑ Open the CSV file.
❑ You successfully extracted the list in your desktop
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Special Thanks to the Following:
MUM VIETNAM 2019 | Engr. Norberto F. Inlayo III
MUM VietnamNice People
Nice Country
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Special Thanks to the Following:
MUM VIETNAM 2019 | Engr. Norberto F. Inlayo III
To God Almighty and my Family for
Supporting me with all of my activities.
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Special Thanks to the Following:
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Special Thanks to the Following:
MUM VIETNAM 2019 | Engr. Norberto F. Inlayo III
To all my classmates in Train the Trainer Thailand 2018. To the Smaller and Bigger
Group
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Thank You!
Let’s be friends:
+639053529751| [email protected]
MUM VIETNAM 2019 | Engr. Norberto F. Inlayo III 61