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Commitbe6e68b

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add dhcp listener tutorial
1 parent5101b00 commitbe6e68b

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‎README.md

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@@ -7,7 +7,7 @@ This is a repository of all the tutorials of [The Python Code](https://www.thepy
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-[Getting Started With Scapy: Python Network Manipulation Tool](https://www.thepythoncode.com/article/getting-started-with-scapy)
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-[Building an ARP Spoofer](https://www.thepythoncode.com/article/building-arp-spoofer-using-scapy). ([code](scapy/arp-spoofer))
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-[Detecting ARP Spoof attacks](https://www.thepythoncode.com/article/detecting-arp-spoof-attacks-using-scapy). ([code](scapy/arp-spoof-detector))
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- DHCP Listenerscript. ([code](scapy/dhcp_listener))
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-[How to Make aDHCP Listenerusing Scapy in Python](https://www.thepythoncode.com/article/dhcp-listener-using-scapy-in-python). ([code](scapy/dhcp_listener))
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-[Fake Access Point Generator](https://www.thepythoncode.com/article/create-fake-access-points-scapy). ([code](scapy/fake-access-point))
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-[Forcing a device to disconnect using scapy in Python](https://www.thepythoncode.com/article/force-a-device-to-disconnect-scapy). ([code](scapy/network-kicker))
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-[Simple Network Scanner](https://www.thepythoncode.com/article/building-network-scanner-using-scapy). ([code](scapy/network-scanner))

‎scapy/dhcp_listener/README.md

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@@ -1,7 +1,7 @@
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#Listening for new Connected Devices in the Network using DHCP
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#[How to Make a DHCP Listener using Scapy in Python](https://www.thepythoncode.com/article/dhcp-listener-using-scapy-in-python)
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to run this:
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-`pip3 install -r requirements.txt`
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-
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```
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python3 dhcp_listener.py
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$python3 dhcp_listener.py
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```

‎scapy/dhcp_listener/dhcp_listener.py

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@@ -1,16 +1,16 @@
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fromscapy.allimport*
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importtime
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hosts= []
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Ether=1
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deflisten_dhcp():
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# Make sure it is DHCP with the filter options
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k=sniff(prn=print_packet,filter='udp and (port 67 or port 68)')
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sniff(prn=print_packet,filter='udp and (port 67 or port 68)')
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defprint_packet(packet):
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# initialize these variables to None at first
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target_mac,requested_ip,hostname,vendor_id= [None]*4
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# get the MAC address of the requester
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ifpacket.haslayer(Ether):
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target_mac=packet.getlayer(Ether).src
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# get the DHCP options
@@ -21,15 +21,18 @@ def print_packet(packet):
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exceptValueError:
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continue
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iflabel=='requested_addr':
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# get the requested IP
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requested_ip=value
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eliflabel=='hostname':
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# get the hostname of the device
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hostname=value.decode()
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eliflabel=='vendor_class_id':
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# get the vendor ID
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vendor_id=value.decode()
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iftarget_macandvendor_idandhostnameandrequested_ipandtarget_macnotinhosts:
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hosts.append(target_mac)
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time_now=time.strftime("[%Y-%m-%d - %H:%M:%S]")
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print("{}: {} - {} / {} requested {}".format(time_now,target_mac,hostname,vendor_id,requested_ip))
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iftarget_macandvendor_idandhostnameandrequested_ip:
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# if all variables are not None, print the device details
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time_now=time.strftime("[%Y-%m-%d - %H:%M:%S]")
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print(f"{time_now}:{target_mac} -{hostname} /{vendor_id} requested{requested_ip}")
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if__name__=="__main__":

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