cisco

Adjusting log timestamps to localtime on Cisco IOS devices

Correlating Log files are an important aspect when responding to incidents/attacks/outages regarding your Cisco devices. However I have noticed for a while that my logging timestamps are off an hour from the actual clock synced by NTP. After some digging I realized that Cisco devices use service timestamps log datetime as a default. You can …

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Lab: Layer 3 Switching Pt.3 – Inter VLAN Routing with Switched Virtual Interfaces(SVI)

With Switched Virtual Interfaces, a Layer 3 Switch can forward packets between networks on its own – no external Router required. Compared to a normal Router with FastEthernet or GigabitEthernet Interfaces, Layer 3 Switches using SVI can forward packets between VLANS at backplane speed! To get an idea how SVI works, take a look at …

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Networking Cheat sheets

I am currently studying for my CCNA and would like to share some cheat sheets with you. They can be found at http://packetlife.net/library/cheat-sheets/ You will find cheat sheets for all kinds of network related topics such as:   IEEE 802.11 IPsec IEEE 802.1x IPv6 OSPF Spanning Tree