From the category archives:

Cisco IOS

EzVPN Server on IOS in three different flavous

by Jimmy Larsson on May 13, 2010

Config example: Vanilla static ipsec vpn with crypto map

by Jimmy Larsson on March 19, 2010

Configuration examples for VPN solutions

by Jimmy Larsson on March 19, 2010

GRE-tunneling between two IOS-routers.

by Jimmy Larsson on March 16, 2010

Lab notes – WB1 Lab4 Part 1

by Jimmy Larsson on February 26, 2010

Cisco IOS Zone Based Policy Firewall

by Jimmy Larsson on February 4, 2010

PAM-table – a sheat-sheet for well known port numbers

by Jimmy Larsson on February 3, 2010

IOS Archive feature

by Jimmy Larsson on January 22, 2010

Cisco ACL logging with cookies

by Jimmy Larsson on January 15, 2010

CCIE Security – filter output of show commands

by Jimmy Larsson on January 11, 2010

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The Unknown
As we know,
There are known knowns.
There are things we know we know.
We also know
There are known unknowns.
That is to say
We know there are some things
We do not know.
But there are also unknown unknowns,
The ones we don’t know
We don’t know.

—Feb. 12, 2002, Department of Defense news briefing