Why is it advisable that a network administrator use SSH instead of Telnet when managing switches?

Why is it advisable that a network administrator use SSH instead of Telnet when managing switches? SSH uses TCP whereas Telnet does not. SSH encrypts only the username and password when logging in. SSH encrypts all remote management communications whereas Telnet does not.

How a network administrator can access a switch securely to protect data from any unauthorized attempt at the middle?

A simple method that many administrators use to help secure the network from unauthorized access is to disable all unused ports on a switch. It is simple to make configuration changes to multiple ports on a switch. If a range of ports must be configured, use the interface range command.

What two methods can be used to remove MAC address table entries from a switch?

What two methods can be used to remove MAC address table entries from a switch? (Choose two.) Power cycle the switch to clear all dynamically learned addresses. The clear switching-tables command will remove statically configured entries.

Why is it important to secure ports and disable unused ports on a switch?

In the last chapter you learned how to secure unused ports by disabling them. Disabling unused ports can stop a bad guy from plugging a malicious device into an unused port and getting unauthorized access to the network.

What is the difference between Telnet and SSH?

TELNET and SSH both are Layer – 7 application layer protocols and both uses TCP( transmission control protocol ) at transport layer. Telnet transfers the data in simple plain text. On other hand SSH uses Encrypted format to send data and also uses a secure channel.

What is native VLAN?

An Access port (or “untagged port” in the non Cisco world) is a switch port which carries traffic for only one VLAN. Access ports do not require a VLAN tag, since all incoming and outgoing frames belong to a single VLAN. The Native VLAN is simply the one VLAN which traverses a Trunk port without a VLAN tag.

Why would a network administrator use the tracert?

Answers Explanation & Hints: The tracert utility is used to identify the path a packet takes from source to destination. Tracert is commonly used when packets are dropped or not reaching a specific destination.

What feature of SSH makes it more secure than Telnet for a device management connection?

Answers Explanation & Hints: Secure Shell (SSH) is a protocol that provides a secure management connection to a remote device. SSH provides security by providing encryption for both authentication (username and password) and the transmitted data. Telnet is a protocol that uses unsecure plaintext transmission.

What does a switch do if a MAC address Cannot be found in the CAM table?

What does a switch do if a MAC address cannot be found in the CAM table? The switch generates an ARP request for the address. The switch floods the frame out all ports (except the receiving port).

Which ports should I disable?

For example, the SANS Institute recommends blocking outbound traffic that uses the following ports:

MS RPC – TCP & UDP port 135.
NetBIOS/IP – TCP & UDP ports 137-139.
SMB/IP – TCP port 445.
Trivial File Transfer Protocol (TFTP) – UDP port 69.
Syslog – UDP port 514.

How do I turn off unused switch ports?

Disable Unused Ports Navigate to each unused port and issue the Cisco IOS shutdown command. If a port later on needs to be reactivated, it can be enabled with the no shutdown command. The figure shows partial output for this configuration. It is simple to make configuration changes to multiple ports on a switch.

What is the difference between SSH and Telnet?

SSH uses TCP whereas Telnet does not. SSH encrypts all remote management communications whereas Telnet does not. SSH sends a clear text message steam which reduces the bandwidth use for management. 13. Refer to the exhibit. A network has already been configured with VTP, using DLS1 as the VTP server for the VTP domain Cisco.

What are benefits of configuring a switch as an HTTP Server?

While configuring a new switch, a network administrator configures the switch as an HTTP server. What benefits does this configuration provide? This allows the switch to host web pages for the network. This allows remote VPN connections to the switch over the Internet. This is required if a web server or web farm is attached to the switch.

Why do I need a VPN for my switch?

This allows the switch to host web pages for the network. This allows remote VPN connections to the switch over the Internet. This is required if a web server or web farm is attached to the switch. This allows web-based configuration tools to be used with the switch.

Can a switch port fa0 / 24 work in VLAN 99?

Switch port Fa0/24 can only work in VLAN 99. VLAN 99 was manually added to the VLAN database. MAC address 0001.637b.b267 was learned from the source address of a frame that was received on switch port Fa0/24. MAC address 0001.637b.b267 was manually associated with the switch port Fa0/24.

How to replace Telnet with a Secure Shell?

Mike Mullins tells you how to replace Telnet with Secure Shell (SSH). Using Telnet, a TCP/IP protocol for accessing remote computers, to control your network devices is comparable to shouting your username and password when exiting a building. Pretty soon, someone will be listening, and they’ll take advantage of your lack of security.

When to use SSH instead of telnet in AAA?

After verifying the configuration, you’re ready to force the users that you added during the AAA configuration to use SSH instead of Telnet. You can do so by requiring SSH for virtual terminal (vty) connections. Here’s an example: Before you kill the current Telnet session, you need an SSH terminal client program to test your configuration.

Is it safe to use telnet over the Internet?

Communication between the client and server is encrypted while telnet does not encrypt the information it sends. Everything is sent in plain text, even passwords. It is not advisable to use telnet over the Internet.