Alex Pinto <alex.pinto78 <at> hotmail.com> writes:
Hi everyone, we currently are looking at sflow options for a commercial
use is for visibility on our network, for quickly detecting source / destination IP addresses, ie where the traffic is going and where is it coming from, the type of traffic would be interesting also but to be honest all which really matters is source / destination.
The requirement of the sflow software is to give us options and data very quickly in the event of a DDOS attack so mitigation can occur quickly once we understand what’s happening on the network. The last thing we want is for the software not to work under a DDOS (too much data) thus leaving us blind upon an attack. The quicker the software can report on issues, the quicker we can do something about it. Our current routers are fully sflow capable and both export nicely to both
collector and analyzer. The core packages.
Our findings so far
Manage Engine Net flow analyzer has both a Linux and windows version, the
software is very light and seems to
perform very fast, although light on additional features such as custom reporting, and alerting / in depth packet information. The concern is this software too simple, will it work under heavy load? Based on our needs Manage Engine Net flow costs $2000.00
Plixer Scrutinizer – based on windows the software seems resource intensive but has a MASSIVE amount of extra visibility built into the software including automatic alerts, that being said the software does seem extremely more complex to configure and understand, reports seem to take longer to produce and the information doesn’t seem to be reported as quickly. (ie lags by minutes or so compared to Manage Engine) Based on our needs Plixer Scrutinizer Costs $4000.00
Does anyone have any real life experience on either package the cost different between the two packages doesn’t worry us, it’s all about selecting the correct package knowing the one time we need to access the flow information and get it quick that the package we choose preforms quickly and works.
I’d also like to hear from anyone else using another commercial solution, which they would recommend.
Thanks in advance
Alex
Hi Alex, Scrutinizer saves 100% of the raw NetFlow data just like Wireshark. Most collectors only keep what is in the tuple (e.g. src/dest IP, port, interface, protocol, autonomous system and few other fields). This makes the interface faster. If you export MAC address or VLANs, Scrutinizer will allow you to filter (and report in the next version) on these fields. Filtering and reporting is very important in traffic analysis. We feel that the ability to Include/Exclude on any combination of fields is a must. ManageEngine can't do this. Scrutinizer saves much more flow data in the roll ups (up to 100K) than ManageEngine (e.g. ~1K) therefore the tables are much larger and slower to query in Scrutinizer although more accurate especially over time. I'm surprised that reports lag by minutes. Here are some things to check: * is the router/switch sending > 3000 flows/second? * is the scrutinizer server under powered? * is antivirus running (it shouldn't be scanning the scrutinizer directory) Did you see page 2 of this pdf: http://www.plixer.com/files/scrutinizer_netflow_challenge.pdf Does this help? Jake Wilson plixer.com