Other Security Subjects

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Hi, How do i restrict wifi router from connecting to cisco switches (access layer switches)? Is this possible without NAC/ISE?Thanks,Sridhar

Have block 123 port to internet on router. Use access-list like interface GigabitEthernet0/1  ip address zz.zz.zz.zz 255.255.255.248 ip access-group INB3 in no ip redirects no ip unreachables no ip proxy-arp ip access-list extended INB3  deny   udp a...

how to prevent a network from spoofing ?

Good morning,on our Cisco ASA (ASA5520, ver 9.0(3)) we have to renumber the url-server.We saw that the object can't be edited, so we added a second server with the right ip address, but unfortunately we can't remove the old one. We got the message: "...

Hello my name is Ivan, I have a question:A week ago, an analysis of Ethical Hacking Internal our entire network platform, which had the following observation was made: Note: We identified that may have different communication devices such as servers ...

Hello,In my opinion, any network device that is considered obsolete is also considered insecure in today's world.  If I am wrong, please correct me on this.If a Cisco 2950 switch that went EOL/EOS over 13 years ago is secure enough to put at the edge...

One or more devices on the network are the reason why we get blacklisted.I've created an ACL record to block all outgoing trafic to a specific IP address.How can I find out what local IP address or MAC address generates matches on this ACL record?

Hello,I have been getting following log at our Boarder Router.Feb 13 09:20:07 core1 kernel: [163238.743397] martian source 216.65.163.8 from 127.83.208.244, on dev eth8 Feb 13 09:20:07 core1 kernel: [163239.386951] martian source 216.65.168.98 from 1...

Our Cisco 5055 has been running for 2 years without any problems. Yesterday we had to switch off the Cisco 5055 to exchange the power block for more 230VAC connections.When we switch on the power the Cisco 5055 was not working anymore. No led's are b...