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MRTG/Routers2: Statistiken für AVM’s FRITZ!Box
Natürlich wollte ich auch Statistiken von der FRITZ!Box in meiner MRTG/Routers2-basierten Monitoring Umgebung haben. Glücklicherweise habe ich ein Tool namens upnp2mrtg gefunden, welches exakt das...
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Measuring Temperatures with PCsensor’s TEMPerHUM Sensor
I am always interested in capturing real values via hardware devices in order to generate the appropriate graphs with my monitoring system. Of course, the outside temperature in our city was at the...
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Monitoring MAC-IPv6 Address Bindings
In the IPv4 world, the DHCP server allocates IPv4 addresses and thereby stores the MAC addresses of the clients. In the IPv6 world, if SLAAC (autoconfiguration) is used, no network or security device...
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MRTG/Routers2: Template MessPC Ethernetbox
Eine sehr praktische Variante, möglichst viele Sensoren übers Netzwerk abzufragen ohne dabei viel basteln zu müssen, ist die Ethernetbox von MessPC. Man kann sie zum Beispiel mit mehreren kombinierten...
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Reliability of IPv6 DAD Message Sniffing
A few weeks ago I published an article in which I proposed a method on how to capture the MAC- to IPv6-address bindings via sniffing and storing IPv6 DAD messages. Though any IPv6 node MUST send these...
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IPv6 Address Statistics based on DAD Messages
After my Tcpdump script for storing MAC-IPv6 address bindings via the Duplicate Address Detection messages (link) and an analysis of the realibility of them (here), I had the idea of a Linux script...
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Basic syslog-ng Installation
This post shows a guideline for a basic installation of the open source syslog-ng daemon in order to store syslog messages from various devices in a separate file for each device. I am using such an...
View ArticleGrep Commands for Cisco ASA Syslog Messages
In a basic environment with a Cisco ASA firewall I am logging everything to a syslog-ng server. As there aren’t any reporting tools installed, I am using grep to filter the huge amount of syslog...
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Stromzähler mit S0-Schnittstelle vom Raspberry Pi auswerten
Endlich ist es soweit: Ich lese den Stromverbrauch von unserer Wohnung mit einem Raspberry Pi aus und lasse mir von meinem Monitoring Server (MRTG + Routers2) schöne Graphen malen. Hierfür verwende ich...
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IPv4 vs. IPv6 Traffic Statistics on Routers
I am very interested in statistics about the usage of IPv6 on Internet routers and firewalls. The problem is, that most routers/firewalls do not have unique SNMP OIDs for IPv4 and IPv6 traffic, but...
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MRTG/Routers2: Template Cisco ASA
I constructed a MRTG/Routers2 configuration template for the Cisco ASA firewall which consists the OIDs (graphs) for the interfaces, CPU, memory, VPNs, connections, ping times, and traceroute hop...
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MRTG/Routers2: Template Palo Alto
Here is my MRTG/Routers2 configuration for a Palo Alto Networks PA-200 firewall. It uses all available OIDs from the PAN-MIB. With a few search-and-replace runs, this template can be used in many other...
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MRTG/Routers2: Template Juniper SA/MAG
I am monitoring an (old) SA-2000 cluster of Juniper Secure Access devices with my MRTG/Routers2 system. With the JUNIPER-IVE-MIB I built the configuration file for that monitoring system. In this blog...
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MRTG/Routers2: Template Juniper SSG
Finally, this is how I am monitoring my Juniper ScreenOS SSG firewalls with MRTG/Routers2. Beside the interfaces (that can be built with cfgmaker) I am using my template in order to monitor the CPU...
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Logfile Parsing
While parsing logfiles on a Linux machine, several commands are useful in order to get the appropriate results, e.g., searching for concrete events in firewall logs. In this post, I list a few standard...
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Out of the Box Network Analyzer “ntopng”
Some time ago I installed a new firewall at the customer’s site. Meanwhile the customer was interested in the flows that are traversing through the firewall right now. Oh. Good question. Of course it...
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MRTG/Routers2: Template FortiGate
A few weeks ago I constructed an MRTG/Routers2 template for the Fortinet FortiGate firewalls. I am using it for monitoring the FortiGate from my MRTG/Routers2 server. With the basic MRTG tool...
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ntopng Installation
Some time ago I published a post introducing ntopng as an out-of-the-box network monitoring tool. I am running it on a Knoppix live Linux notebook with two network cards. However, I have a few...
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RIPE Atlas Measurements
I just want to share my happiness about the RIPE Atlas measurements. If you have not heard about it yet, keep on reading. Following is a very basic overview of how the Atlas tool from the RIPE NCC can...
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RIPE Atlas Probe Stats
Since almost two years I am running a RIPE Atlas Probe in my server room. It resides in an own security zone on a Palo Alto firewall (which also powers the probe via its USB port :)). With this post I...
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