how to deactivate layer 2 protocol on untrusted ports

[burn_notice]

السلام عليكم ورحمه الله وبركاته
لو سمحتم ياشباب انا عاوز اعمل الموضوع دا فى الشغل وعاوز اعرف الطريقه او الاوامر وشكرا

[sheno]

اخى العزيز

هذه هى ال layer 2 protocol

ARCnet　Attached Resource Computer NETwork
CDP Cisco Discovery Protocol
DCAP Data Link Switching Client Access Protocol
Distributed Multi-Link Trunking
Distributed Split Multi-Link Trunking
Dynamic Trunking Protocol
Econet
FDDI Fiber Distributed Data Interface
Frame Relay
ITU-T G.hn Data Link Layer
HDLC High-Level Data Link Control
IEEE 802.11 WiFi
IEEE 802.16 WiMAX
LACP Link Aggregation Control Protocol
LattisNet
LocalTalk
L2F Layer 2 Forwarding Protocol
L2TP Layer 2 Tunneling Protocol
LAPD Link Access Procedures on the D channel
LLDP Link Layer Discovery Protocol
LLDP-MED Link Layer Discovery Protocol - Media Endpoint Discovery
PPP Point-to-Point Protocol
PPTP Point-to-Point Tunneling Protocol
Q.710 Simplified Message Transfer Part
Multi-link trunking Protocol
RPR IEEE 802.17 Resilient Packet Ring
SLIP Serial Line Internet Protocol (obsolete)
StarLAN
STP Spanning Tree Protocol
Split multi-link trunking Protocol
Token ring a protocol developed by IBM; the name can also be used to describe the token passing ring logical topology that it popularized.
VTP VLAN Trunking Protocol
ايا من تلك البروتوكولات تريد؟
حدد هدفك وبالتالى سيهل التعامل معه ولكن السؤال على وضعه القائم يصبح كانك تبحث فى اشاياءا كثيره

اما بالنسبه لموضوع ال trustedport and the non trusted port

Understanding Trusted and Untrusted Ports

By default, all access ports are untrusted and all trunk ports are trusted in regard to DHCP. Trusted ports allow DHCP servers to provide IP addresses and other information to requesting devices. Untrusted ports drop traffic from DHCP servers to prevent unauthorized servers from providing any configuration information to clients.
If you attach a DHCP server to an access port, you must configure the port as trusted. Before you do so, ensure that the server is physically secure—that is, that access to the server is monitored and controlled.


وهذا شرح اكثر من رائع لتلك الخاصيه التى تبحث عنها اذا كنت تقصد ال dhcp snooping

https://www.thebryantadvantage.com/B...CPSnooping.htm


تمنياتى بالتوفيق