Questions tagged [security]

A general purpose tag to mark discussions of general security topics including firewalls, ACLs, AAA and numerous others related to keeping the network safe from unauthorized access.

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Arp Protect in dynamic VLAN environment

I am using 802.1x authentication with dynamic Vlan assignment(CPPM). As you may know, when a user logges in to their computer, SW attaches the user port to related Vlan. Thinking the scenario in which ...
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71 views

How to implement port security in SDN using pox controller and ovs?

How can I defend against DHCP starvation attacks or MAC spoofing in an SDN environment?
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128 views

How an MKA key server decides if it shall use MACSec and how it announce that?

According to IEEE 802.1X-2010 the standard for defining MACSec Key agreement protocol Clause 9.6, that's how the key-server decides to use MACSec or no. Each participant advertises whether it is ...
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719 views

How are required Keys inside MACSec Key agreement protocol (MKA) generated?

I am trying to wrap my head around MACSec Key agreement protocol (MKA) and its relation with MACSec and other protocols. So bear with me. To my understanding in order to MACSec to work, all nodes ...
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270 views

Effects of ip options drop command on Cisco 4507 Device

Are there any services or applications traversing a router that will be impacted by the command, "ip options drop"? I know the router warns about RSVP when you input this command, but this 4510 is not ...
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60 views

Cyberoam Internet Issue

I have a security problem on my network, sometimes some computers are disconecting from internet, when i visualised log files of my cyberoam , i found in top domains some adresses not recognised like ...
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116 views

preventing network sniffing and eavesdropping using ping

We are using ping on the connection between aserver and the client pc, to check if there is an interruption, probably caused by sniffing or eavesdropping devices. During the ping, it will run a code ...
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76 views

How to make NMAP command steady and the fastest possible?

I want to make an IP scan using NMAP, but the operating time varies for some reason. The command can be executed in 2 seconds, and if I launch it again just after, it can take 30 seconds. This is the ...
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344 views

wpa-aes EAP-peap authentication problem

I'm trying to connect ubiquity NanoStation M2 as Station/Router mode to a hotspot that I believe has WPA/AES security and EAP-PEAP for auth. I have tested the username and password from my laptop and ...
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41 views

Compatible peap+freeradius+openldap

On my new job I have inherited a service wpa2-enterprice with peap+freeradius+openldap. As NAS we use ArubaIAP with enabled function "eap-termination". And this bundle works well! Little deep: In ...