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IT technical memo of networking

Redmine setting change place when the layout and design does not appear

It has been upgraded to a new version Redmine in this article, but the screen layout design in which there is a problem that does not appear to occur. When you access the top page, in this way becomes a display of text only, you do not see…

Internal error occurs in Redmine settings and File attachments

The Redmine in this article was version up, however, was modified since the problem has occurred. Problem Internal Server Error occurs when you try to open the Settings screen. In addition, also it fails by Internal Server Error when the f…

Redmine3.1.1-> to 3.2.2 version up in safe and easily with 30 minutes

By new version run concurrently switching the Redmine, version up without risk of data loss. The first was carried out the SVN updates and trying to ease, but not rise up to 3.2 of the plan, and re-version up. 3.1.1 → 3.1.5 → 3.2.2 The Res…

Cisco ASA traceroute settings via NAPT

Some of the settings to ensure proper operation of the traceroute in an environment that uses a Cisco ASA as a NAT router is required. NAPT in the Internet connection part, inspect, ACL, note for reviewing the various settings, such as pol…

Allow the Cisco and Linux traceroute in Firewall

In order to allow the traceroute to be used in the communication confirmation of the network in the FW is passed, it is necessary one time. Traceroute : command to check the network path by utilizing a TTL expired Specification of tracerou…

How to install and use Windows Server 2016 Technical Preview 5

It introduced an indefinite period can be used free of charge, free of charge to Windows Server 2016 Technical Preview 4, but already TP5 is released, TP4 are distributed end. Desktop is made in the same manner as in this way Windows10. Wi…

Windows Server Free Usage (2016 Technical Preview 4)

How to use Windows Server that is usually need to use the paid, free of charge and forever (no expire) . Windows Server can not be used for quite feel free in the home or test environment. It can be used indefinitely for free - free of cha…

Publish a home Web server to the Internet with ASA5505

I set an Cisco ASA5505 to expose the home Web server on the Internet. Prerequisite Additional Configuration NAT Setting FW Setting Trouble Shooting Conclusion Prerequisite ASA5505 OS Ver.9.2(3) ASA5505 is used to Internet Connecting Router…

NetFlow Collector (Free) Recommend Product to Network Visualize (2016)

Paessler PRTG is the most useful in Free of charge-free or OSS NetFlow Collector, Analyzer. (in 2016) Originally we wanted to adopt a system that is open to the public in the OSS (open source), the first place the system that has been upda…

Pandora FMS weakpoint of the analysis function in NetFlow

In this article, NetFlow Collector feel the superiority, it was decided to adopt a Pandora FMS as Analyzer. Pandora FMS NetFlow analyze and IP address management - designetwork(EN) I have tried to install and use the Pandora FMS to CentOS6…

Pandora FMS NetFlow analyze and IP address management

FlowCollector was considering than before, as the IP address management system, the introduction of Pandora FMS. Pandora FMS is widely known along with, such as ZABBIX as integrated monitoring system of open source. In addition, there is a…

Paessler PRTG Maintain in the case of Empty DISK

Paessler PRTG began running Windows7 as the server, however, it stopped working in less than a week. Because disk capacity exceeded was the cause, change the data file path, was re-run. Server Stopped Change data file path Folder Size of D…

How to Upgrade phpIPAM (v1.1.010->v1.2.1)

Though phpIPAM Version1.2, and Version1.2.1 are released, I try to upgrade ( update ) my v1.1.010. Unfortunatly, I couldn't use often, and I retry to use and evaluate. phpIPAM is highly efficency in IP Address Management system in OSS ( Op…

Paessler PRTG (Unified Monitoring System) install to Windows

Easy to recommend Paessler PRTG is in the practice of the network traffic visualization. The ability to operate even Windows7, does not require special environment. It is started on the PC you are using everyday. Installation Paessler PRTG…

ntop changes to ntopng

What is ntopng For collect the FlowRecord with ntopng Mode of nProbe Licensing and Source Code of nProbe Reconsider the Flow Collector in Linux What is ntopng At first ntop released in 1998, after released some feature added, in 2013/5/1 n…


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