To enable ICMP (internet Control Message Protocol) on a Cisco device, you typically need to ensure that the device's access control lists (ACLs) allow ICMP traffic. If you have an ACL that is blocking ICMP, you can modify it to permit ICMP packets by adding a rule like permit icmp any any. Additionally, make sure that any firewall features or security settings on the device do not block ICMP traffic. Once configured, you can test ICMP connectivity using tools like ping.
Cisco IOS firewalls handle ICMP (Internet Control Message Protocol) traffic by inspecting and filtering it based on configured access control lists (ACLs) and security policies. By default, ICMP messages such as echo requests (ping) can be allowed or denied depending on the rules set in the firewall configuration. Administrators can customize the handling of specific ICMP types, enabling or disabling traffic as needed for network security and performance. Additionally, the firewall can log ICMP traffic for monitoring and troubleshooting purposes.
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On a Cisco router, the command to enable IP routing (for IPv4) is:ip routingTo disable it:no ip routingOn a Cisco router, the command to enable IP routing (for IPv4) is:ip routingTo disable it:no ip routingOn a Cisco router, the command to enable IP routing (for IPv4) is:ip routingTo disable it:no ip routingOn a Cisco router, the command to enable IP routing (for IPv4) is:ip routingTo disable it:no ip routing
User enable. router> enable router#
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The "enable" command will bring the privilege level from user exec to privileged exec. Example: R1> R1>enable R1#
You can do this on the enable, or privileged, prompt.
There really is no "port" for icmp but there is a icmp code. If you are looking for the icmp code for echo-reply it is 0 and the echo is 8 For an access list you could do the following: permit icmp any any echo-reply permit icmp any any echo Or the same using the icmp code permit icmp any any 0 permit icmp any any 8
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As Admin In Command prompt, type: netsh firewall set icmpsetting 8 enable Enter
There really is no "port" for icmp but there is a icmp code. If you are looking for the icmp code for echo-reply it is 0 and the echo is 8 For an access list you could do the following: permit icmp any any echo-reply permit icmp any any echo Or the same using the icmp code permit icmp any any 0 permit icmp any any 8
In the global configuration mode, type enable secret See below example:Router>enableRouter#configure terminalEnter configuration commands, one per line. End with CNTL/Z.Router(config)#enable secret passwordRouter(config)#exitRouter#