Categories
Welcome Center
Education & Development
Discussions
Certification Preparation
Recent Posts
Groups
Free Resources
Ebooks
Free Workshops
Trending Certifications Infographic
Infosec Training
IT & Security Training
Live Boot Camps
Security Awareness Training
About Infosec Institute
Home
Certification Preparation
Cisco
CCST & CCNA (Entry-level & Associate)
Wildcard mask
Gomjabber
I am basically a caretaker for a network someone else setup, using 3550 multilayer switches.
Some of the switches have ACLs, and he's using some wildcard masks that make no sense to me.
0.0.251.255
0.0.0.9
From my study, those would equate to non-valid subnet masks of 255.255.4.0 and 255.255.255.246.
I asked him about this but he was evasive.
How is he getting away with this?
Find more posts tagged with
Save $250 on 2025 certification boot camps from Infosec!
Book now with code EOY2025
Button
Comments
TheNewITGuy
Wildcard Masks arent just an inverse subnet mask matching entire length - here's a good explanation
https://howdoesinternetwork.com/2013/wildcard-mask
Quick Links
All Categories
Recent Posts
Activity
Unanswered
Groups
Best Of
INFOSEC Boot Camps
$250
OFF
Use code
EOY2025
to receive $250 off your 2025 certification boot camp!
BROWSE BOOT CAMPS
