February 12, 2009
Free IP SLA Monitor from Solarwinds
Just found this "news" in my Junk Email folder (sometimes you find gold in there!). Has anyone had a chance to try this Free IP SLA Monitor from Solarwinds? Looks interesting, but I'm worried about installing yet another cool-sounding-free-tool that runs for 5 minutes then explodes in order to convince me to buy a multimillion dollar product.
Posted by JC at 12:44 PM | Comments (6)
December 19, 2008
Configuring (simple) SNMPv3
SNMP is awesome...All the free SNMP utilities for Cisco devices are even more awesome...but the most popular versions of SNMP (Version 1 and 2c) are completely clear text, completely insecure. SNMPv3 adds authentication and encryption capabilities, however, GOOD LUCK finding an easy, working configuration on Cisco's website. Here's an SNMPv3 configuration that will provide both authentication and encryption services on Cisco routers and switches:
Router(config)#snmp-server group TESTGROUP v3 priv
Router(config)#snmp-server user Jeremy TESTGROUP v3 auth sha JeremyPassword priv des56 3NCRYPT!0NK3Y
*Note: "auth" methods support both md5 and sha
**Note: "priv" also allows AES encryption
***Note: Most SNMP utilities I've seen only support DES encryption
Posted by JC at 9:31 AM | Comments (5)
September 25, 2006
Mmmmm...SNMP and Netflow Goodness.
I love SNMP and Netflow. There are so many SNMP-capable free / cheap utilities out there that give you some really good info about your network (Switch Inspector and PRTG are two of my favorites). I wish Cisco would come out with a certification that deals with nothing but SNMP and network monitoring (you can go through the entire certification track including the CCIE and find nothing mentioned about SNMP).
Anyhow, I just ran across someone who has created a blog dedicated to the topic. At a quick glance, it looks like some good stuff! Hopefully he adds more to it. Check it out when you have a chance.
Posted by JC at 8:59 AM | Comments (3)