Setting up internet connectivity on the wireless router.Securing a wireless network with WPA and WEP security features.Briefly, here are the configurations we’ll perform on the wireless router: We’ll go through wireless LAN configuration, wireless security and configuring the wireless router for internet connectivity. Well, there you go.Hello and welcome! This tutorial will give you an easy guide of configuring a wireless network in Packet Tracer using a wireless router. See the 'Implicit Rule' in the above output? This is the 'implicit deny' that catches things you don't 'explicitly allow.' You've just seen it in play here. If we had failed it would have shown something like this.ĪSA1# packet-tracer input INSIDE tcp 10.10.10.10 22 155.155.155.155 3028ĭrop-reason: (acl-drop) Flow is denied by configured rule

(If you really want some verbose output try adding 'detailed' to the end of the command.) Look at all the juicy info we can see, what access-lists and access-groups it had to traverse, the NAT statement in play, and the dynamic translation. The bottom line is yes, 88 is allowed out from the 10.10.10.10 address. New flow created with id 54311482, packet dispatched to next module

X:X:X:X::X Enter the Source address if ipv6ĪSA1# packet-tracer input INSIDE tcp 10.10.10.10 ?ĪSA1# packet-tracer input INSIDE tcp 10.10.10.10 88 ?Ī.B.C.D Enter the destination ipv4 addressĪSA1# packet-tracer input INSIDE tcp 10.10.10.10 88 155.155.155.155 3028Īccess-group LAN_INCOMING in interface INSIDEĪccess-list LAN_INCOMING extended permit tcp host 10.10.10.10 any Udp Enter this keyword if the trace packet is UDP Tcp Enter this keyword if the trace packet is TCP Rawip Enter this keyword if the trace packet is RAW IP Icmp Enter this keyword if the trace packet is ICMP Input Ingress interface on which to trace packet (Let's pretend like we've never used the command.)

Since I know the source port and the IP of my webserver I can start to walk through the 'packet-tracer' command. I've been tasked with finding out if tcp port 88 (Kerberos) is allowed out of the network. (You know I'm right, I know I'm right, heck we've all been there!)Įnough blabity blab, let's cut to the chase. Haven't you ever wanted to know if the ACL you just wrote will accomplish what you intended? And, how many times has somebody asked you, 'Am I being blocked by the firewall?' Well, until now you just took an educated guess based on your running-config or looked in the log for their IP address while scratching your head. One of my favorite Cisco commands is the 'packet-tracer' command of the Cisco ASA Firewall.

Example cisco packet tracer commands