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How to clear all static NAT entries with just one command?

I am using cisco 2901 Router with IOS version 15M. In the configuration of the router I am using lots of static NAT entries. And I need to change these entries when it is requested.

And a possible solution for this situation are the confi...

How to clear all static NAT entries with just one command?

I am using cisco 2901 Router with IOS version 15M. In the configuration of the router I am using lots of static NAT entries. And I need to change these entries when it is requested.

And a possible solution for this situation are the confi...

Cisco Route-Map Object Tracking for Default-Information

I am tasked to do conditonally advertise a default route using RIP only if a specific IP address is ICMP reachable. (Yes, CCIE study, not a real network design).

My idea was to use the track object matching feature to accomp...

ICMP Fragmentation

Would a ping (echo request) to a reachable IP address with a size of 65500 bytes, end-to-end path MTU of 1500 Bytes, and the DF flag not set, work by having the peer responding an ICMP?

21:05:31.325718 IP (tos 0x0, ttl 128, ...

802.11 how do i find out if packet is encrypted with WEP or WPA

i am playing with the 802.11 header, trying to figure out the encryption type of incoming 0x08(DATA) packets.

1) I capture the 0x08 type packet (DATA).

2) I find out that a WEP bit is set (2nd byte of Frame Control, 7th B...

Switching and MAC Address representation?

Since the destination and source MAC addresses in a frame in a LAN change, how does it know where to finish, as the destination is only the next hop?

And if there is a switch, which connects to hosts and another switch, and the 2nd switch...

IPv6 – RA prefixes and flags

I'm trying to understand how SLAAC works, but having troubles understanding how the information inside the Router Advertisement is used by a client.

Let's say neither the Manager nor the Other Conflig Flags are set and the R...