Tag Archives: IOS

OpenVPN and Raspberry Pi 3 – part 1

I used to use the remote access VPN that came with my SRX100 and now SRX300. However, it is limited to two users only. I need more than two users. I thought of using the Raspberry Pi and OpenVPN since OpenVPN … Continue reading

Posted in CCNA Security, Juniper, Linux, Misc., Sec, Security | Tagged , , , , , , | Leave a comment

GNS3 Qemu and OSX Yosemite – Part 1

Yesterday was the day I started messing around with GNS3. I found the problem very quickly that I couldn’t run vIOS L2 on my Macbook Pro. Since it was pretty late night, and I was really tired from work. I put … Continue reading

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OSPF Metric Calculation, but which interface does it use to calculate its metric

We all know that OSPF uses the formula reference/bandwidth (the default reference value is 100Mbps) to calculate the cost per link then OSPF will use the SPF (Shorter Path First) Dijkstra Algorithm to calculate the metric to reach the target network. However, which … Continue reading

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Cisco Router Password Recovery (or Bypassing the Enable Password) and Uploading the Router IOS in ROMMON Mode

So, I bought another router off of Ebay.  A week later, I had to pick it up at the local USPS from where I live.  When I got home, I started the router to test it, and I was prompted … Continue reading

Posted in CCNA Security, CCNA Wireless, CCNP, Misc., My CCNA Studies | Tagged , , , , , , , , , , | Leave a comment

Installing GNS3 on Mac

At the time of this writing, the current version of GNS3 is 0.7.4.  Therefore, we will be installing version 0.7.4.  Version 0.8.1 is currently in Beta.  I just got my MBP 13″ a yesterday, and decided to install GNS3. 1. … Continue reading

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When buying a Cisco Switch from Ebay…

Whenever I buy a switch off of Ebay, I always check all the switch ports if they are working or not. The way I do it, I use the router’s fastethernet port and connect it to each switch port then … Continue reading

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OSPF LSA Area Types

OSPF LSA  Area Types are: Type 1 (Router): This is the local routes within an area, an intra-area routes.    On the routing table they are the ones with letter O. E.g. Look at the Figure 1 (light green arrows), … Continue reading

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