Category: Networking
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Cisco ASA, Class Video, Mikrotik, Mikrotik Tutorials, Mikrotik Video Tutorial, Networking, Security, Training/ClassesClass Video – Mikrotik VPN
This class covers: PPTP Client connections IPSec – Mikrotik to Mikrotik IPSec – Mikrotik to Mikrotik – Multiple Subnets IPSec – Mikrotik to Mikrotik – Private IP on WAN Interface IPSec – Mikrotik to Cisco Router IPSec – Mikrotik to Cisco ASA IPSec – Mikrotik to Cisco Router Multiple Subnets IPIP Tunnel w/IPSec – Mikrotik…
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Inbound Calls Forwarded to External Numbers Won’t Pass CallerID(or Fail to Dial Out)
This Cisco article describes the problem exactly! The scenario: I set my desk phone’s call forward all to forward to my cell phone. Someone from the outside calls my desk and it forwards to my cell. The number ringing on my cell phone looks like the generic PRI, and not the caller or my desk…
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Callmanager 4.X CDR Processing Problem
If you are having CDR issues you should check this Cisco CDR Troubleshooting guide. CDR generally: Saves to text files Then writes text files to the CDR database Last it writes the CDR database to the Art database We have a custom set of files that crunches the info from the Art DB table to…
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Fiber + Backhoe = Bad
Soooo we get a call from a customer that their link dropped. Upon further investigation, their fiber runs back to a local university and then jumps to their location. A little more digging shows that the city was installing a fire hydrant along that line. A quick call to the city yields us the information…
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Mikrotik Changelog V4.4
It can be found here. Looks like a small round of bug fixes. Notable are *) removed support for xen; Interesting drop. *) routing – added support for BFD protocol; Looks like they are starting to roll it out. Still nothing in the wiki on it, though. *) fixed problem – MetaROUTER sometimes froze on…
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CablesAndKits Clearance…I Couldn’t Resist
I grabbed three 836s for $4.80 each! These dudes are technically DSL modems, so as far as that goes, they are dead to me. On the inside, it has a 4 port switch that you can assign VLANs. These guys will make great IPSLA nodes for line quality testing…and for $4.80 each…forget about it! CNK…
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Layer 2 Security – Protect You and Your Users From Attack
Before your access lists or firewall rules comes layer 2(L2). This is the Data link layer where your MAC addressing lives. Why do we need to protect L2…? Man in the middle attacks happen via L2 Rogue DHCP on a single segment DHCP server starvation attack ARP attacks against your switches Lets hit these guys…