Hi, I'm putting together a book on security*, and wanted some expert input onto network monitoring solutions... http://www.subspacefield.org/security/security_concepts.html Nagios, Net-SNMP, ifgraph, cacti, OpenNMS... any others? Any summaries of when one is better than the other? Any suggestions on section 13-15? I imagine I'll offend some of you by not distinguishing between system and network adminsitration, but... it's a small section right now, maybe if it grows. OT: I had issues with understanding MIBs and SNMP tools... specifically, I wanted to query and graph the pf-specific MIB... any suggested places to ask? Do I ask on the Net-SNMP list, or is there a better place? Also, cacti... seemed to behave differently based on whether the target was Linux-based or BSD-based... I suppose the cacti-users is the right place to ask, but if anyone has any suggestions, please LMK. I hate the UI. -- My emails do not have attachments; it's a digital signature that your mail program doesn't understand. | http://www.subspacefield.org/~travis/ If you are a spammer, please email john@subspacefield.org to get blacklisted.