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Port security for Cisco switch


To prevent anyone illegally connecting switches to your company lan point:

switch(config-if)#switchport port-security
switch(config-if)#switchport port-security maximum 1 #only allow 1 mac address
switch(config-if)#switchport port-security violation shutdown
switch(config-if)#switchport port-security aging time 1
#1min
switch(config-if)#switchport port-security aging type inactivity

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