In this video, Todd Lammle demonstrates how to configure and verify both a named and numbered standard access-list in order to protect your Virtual TeletYpe (VTY) lines on a Cisco router or switches. By applying a named or numbered standard access list to the VTY lines themselves, you can protect your Cisco router or switch from remote attacks.
- [Narrator] Alright, now that we have some sort of…understanding of the difference between standard…and extended access lists and saw how they worked…and how limited standard access lists were for sure.…But really what you really wanted to learn was…how to configure a standard access list using names.…In this section here, we're gonna…move onto securing our VTY lines.…Now when we look at our last configuration here,…we added an access list to an interface.…We don't want to do that unless it's absolutely necessary…because it causes latency on the router.…In this case, I want to remove an access list…from an interface and then the access…list is still in global config.…
It's not gonna do anything if I…don't have it on an interface.…So in this case here, I'm going to bring up the command.…I did a Control A, which took my cursor to…the beginning of the line, typed a no, space and Press…Enter, that takes the access list off the interface.…Alright, so the access list is no longer working.…And I would be able to now telnet…
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- Overview of internetworking
- The TCP/IP networking model
- Easy subnetting
- Managing Cisco IOS
- Managing Cisco networks and devices
- IP routing
- Layer 2 switching
- VLANs and InterVLAN routing
- Network address translation
Skill Level Intermediate
Internetworking devices4m 20s
3. Introduction to TCP/IP
4. Easy Subnetting
5. VLSM, Summarization, and Troubleshooting TCP/IP
6. Cisco Internetworking Operating System (IOS)
7. Managing a Cisco Internetwork
8. IP Routing
9. Layer 2 Switching
10. VLANs and InterVLAN Routing (IVR)
12. Network Address Translation (NAT)
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