Categoría: Uncategorized
I’ve been hard at work with my new company, NetworkEngineerTraining.com. I plan to have the official launch on 1/13/2014. Until then, here is a sample video on SIP Authentication Attacks. I go over how the MD5 hash on the Authorization header is constructed. I also show a basic Python script can determine a dictionary based […]
MásI’m thinking about creating online training material. While most people concentrate on certification tracks, there is a lot of real world scenarios that certs will NOT prepare you for. That’s where my knowledge comes into play. With that said, which modules would benefit you?
MásI recently came across a scenario that required load balancing to an upstream SBC. This is easily accomplished by building a Session-Agent Group and setting the appropriate strategy, however I wanted to try a different path. I found that load balancing on the Acme Packet Net-Net series with SRV records is easy, if you follow […]
MásI like to have Palladion execute scripts overnight and email the results in a CSV. The issue that I faced was that scripts require you to enter a start and end time. Logging in at 10pm to execute a post dial delay script was not an efficient use of my personal time. I built the […]
MásI’ve been using a lot of Wireshark display filters lately. When troubleshooting a 100MB capture file setting a filter to search for relevant data is a huge time saver. Below are some of the common filters that I use. 1. Searching for RTP Packets within a specified range that DO NOT have the DSCP field […]
MásSince implementing new monitoring tools I’ve noticed a lot of failed REGISTER events on our network. Our SBC would issue a 4XX back to the originating UA, however the attempts continue. At one point I saw 200 register messages per second from a single IP. I started to look a bit deeper into the REGISTER […]
MásI recently had to create a configuration that contained multiple VRFs that all NAT/PAT out the same ISP connection. There is also a managed circuit that connects back to the Managed Service Provider (MSP) for management. All dynamic routing configs will need to be placed in the global routing table (default vrf). For this example, […]
MásI completed the final test of the CCNP track last Friday. This should provide me with more time for content.
Más