i have a router access list configured on both inbound and outbound interface, and i have a local NTP server in my network, now i want to router get time updated from that server , i know it is possiable but the quistion is that i have to permit that NTP server in access list or not ? if yes then what is the process
Figure out which interface the traffic will leave the router towards the NTP server. Just use the command "sh ip route X.X.X.X" where x.x.x.x is the ip address of the NTP server. You will see an indication of which interface the traffic will egress the router.
Now, figure out what acls are applied on that egress interface. Use the command "sh run int X" where X is the interface determined in step 1. You might see both inbound and outbound ACLs.
Finally, modify those ACLs to permit traffic sourced from the router towards the NTP server on port 123. You can specify which source ip the router should use for this query using the cisco command "ntp source X" where X is the interface name with the source IP you want the packets to be addressed from.
Of course, you will also need the router config line "ntp server X.X.X.X" to point it to the NTP time server too.
We have 3 identical switches configured by someone else and would like to claim some of the Gigabit ports(G1/G2/G3/G4) for use on servers. When we try to change the wiring and configuration, we run in to connectivity issues. Attached is a des...
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...