Network Security

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Welcome to the Cisco Community Ask Me Anything conversation. Submit your questions from  Wednesday, March 4, 2026 through Wednesday, March18 2026. Our Experts Ike Chon, Scott Nishimura, Annya Martinez Foster, Jyhan Ocana Casillas, Eder Pacheco, Willi...

Hi Team,How can i configure MAC Address to IP Address Binding on Cisco ASA FW? I am migrating Domain controller to Cisco FW, i have configured DHCP and DNS on it. Now I have 7 IPs which needs to be configured on MAC address on this FW. 

The web server service running on this switch appears to create it's Access-Control-Allow-Origin response header based on the user-supplied Origin value. I am needing to  include the “Vary: Origin” header to prevent caching. But I don't know where ca...

calexfiel by Community Member
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  • 0 Helpful votes

I am working trying to limit users to certain sites within a domain using manual url filtering.I have a rule that blocks discord.com which worksI do want users to be able to access certain channels within discord.source: internal networkdestination: ...

gcook0001 by Level 4
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  • 2 replies
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Hey all,This is actually my first post and was looking for some help with my new Snort install on my server.  I am noticing that my logs are becoming inundated with ICMP Connection Tests and am looking for a way to suppress these:09/15-13:37:57.28752...

wechsc7e by Community Member
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  • 5 Helpful votes

I have created security intelligence block list but sometimes it allows the connections like the one highlighted and it is identified as attackers. Is that because the intrusion policy is set to detection not prevention?   

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Wee2o by Frequent Visitor
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Hello , I have a question regarding the radius config on the Cat 9k switches. Device(config)#radius server <server-name> Device(config-radius-server)#address ipv4 10.1.1.1Device(config-radius-server)#key cisco123 Should the name of the configured rad...

Dear, good afternoon. I have an FDT HA model 1010. I have Firmware 6.4.0 and I must update to a new version. The question is should I update each one of the nodes or do I throw the firmware to the secondary and both are updated? Do you have any docum...