topic Re: Non-working interfaces in Network Security https://community.cisco.com/t5/network-security/non-working-interfaces/m-p/797032#M1004860 <HTML><HEAD></HEAD><BODY><P>Hi,</P><P></P><P>So, if you don't have DHCP or VLANs configured what attacks or issues you would be concerned of when not having the interfaces being shutdown?</P><P></P><P>Thanks,</P><P>Haitham</P></BODY></HTML> Sun, 13 May 2007 06:28:16 GMT haithamnofal 2007-05-13T06:28:16Z Non-working interfaces https://community.cisco.com/t5/network-security/non-working-interfaces/m-p/797030#M1004858 <P>Hi,</P><P></P><P>If I have interfaces which are up but were left with no IP addresses; is there any risk for L2 attacks here if somebody got physically connected to any of them?</P><P></P><P>Regards,</P><P>Haitham</P> Mon, 11 Mar 2019 10:12:23 GMT https://community.cisco.com/t5/network-security/non-working-interfaces/m-p/797030#M1004858 haithamnofal 2019-03-11T10:12:23Z Re: Non-working interfaces https://community.cisco.com/t5/network-security/non-working-interfaces/m-p/797031#M1004859 <HTML><HEAD></HEAD><BODY><P>First thing you should do is shut them down if your not using them. If for some reason you have to have them up, make sure the interface configurations are empty. No VLANS, no DHCP, etc.. Having said this brings up my first recommendation, shut the ports down.</P><P></P><P>Please rate if you are satisfied.</P><P></P><P>Cheers!</P></BODY></HTML> Sat, 12 May 2007 22:24:19 GMT https://community.cisco.com/t5/network-security/non-working-interfaces/m-p/797031#M1004859 joshua.walton 2007-05-12T22:24:19Z Re: Non-working interfaces https://community.cisco.com/t5/network-security/non-working-interfaces/m-p/797032#M1004860 <HTML><HEAD></HEAD><BODY><P>Hi,</P><P></P><P>So, if you don't have DHCP or VLANs configured what attacks or issues you would be concerned of when not having the interfaces being shutdown?</P><P></P><P>Thanks,</P><P>Haitham</P></BODY></HTML> Sun, 13 May 2007 06:28:16 GMT https://community.cisco.com/t5/network-security/non-working-interfaces/m-p/797032#M1004860 haithamnofal 2007-05-13T06:28:16Z Re: Non-working interfaces https://community.cisco.com/t5/network-security/non-working-interfaces/m-p/797033#M1004861 <HTML><HEAD></HEAD><BODY><P>Physical attacks (person plugging a PC into the port directly)</P><P></P><P>This is why you have the ports shutdown and even have them assigned to a null vlan.</P></BODY></HTML> Sun, 13 May 2007 09:37:22 GMT https://community.cisco.com/t5/network-security/non-working-interfaces/m-p/797033#M1004861 joshua.walton 2007-05-13T09:37:22Z