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Networking

Vigor 165 SNMP monitoring

Monitoring network equipment is usually a good way to be notified quickly about issues that could impact operations requiring network connectivity. One way to monitor equipment is using SNMP – Simple Network Management Protocol. “Simple” is a bit an oxymoron, because the underlying settings – just look at MIBs – are far from being simple. […]

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Networking

VoIP behind NAT

More and more phone lines are being switched to VoIP, especially where FTTH is being deployed. When using the ISP modem/router it usually performs the ATA (Analog Telephone Adapter) role too, and it is already configured for VoIP – just plug the telephone in one of its PHONE/TEL ports (technically – FXS ports), or connect […]

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Networking

Scheduling firewall rules on DrayTek Vigor 165

One interesting feature of the DrayTek Vigor 165 is the ability to schedule firewall rules, rules can be enabled and disabled using the router’s scheduler. For examples some clients can be forbidden Internet access at a given time. Combined with other types of filters, like URL filters, it can also be used to let users […]

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Networking

StatProcessor for DrayTek, fix for 35b profiles

Prior to version 1.14, data for 35b and other profiles are not shown correctly because of the way DrayTek packs data into the HLog/QLN/SNR structures returned by telnet commands – upstream and downstream data may use different “group size” – how many point are coalesced into a single entry. Don’t know if they average the […]

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Networking

DrayTek Vigor 165 firewall setup

How to configure DrayTek Vigor 165 firewall with strict security and separate filters for inbound and outbound traffic.

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Networking

Draytek Stat Processor

DrayTek routers have some advanced configuration capabilities, but their web UI is not one of the best ones around. Especially, it doesn’t display many useful data about VDSL connections which are actually available, but only accessible via telnet/ssh. Moreover they are displayed in a text format only, which makes some of them not very useful. […]

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Networking

DrayTek Vigor 165 QoS setup

​ It looks the DrayTek Vigor 165 xDSL modem/router supports some QoS features, despite the fact the datasheet does not mention them. They are available from the CLI, and partially in the web UI via a bug in the firewall filter setup page. The CLI gives access to the qos setup, qos class and qos […]

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Networking

Windows 10 DNS Cache is not just a DNS cache

Disabling the dnscache service in Windows 10 looks to bring a series of issues. I found out when I upgraded a machine from Windows 7 to Windows 10. That machine had the service disabled because it was used in a test environment where often DNS entries changed, and the default cache settings of Windows 7 […]

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Networking

Configurazione ATA Cisco SPA 112 con VoIP WindTre

This post is in Italian because moslty useful for Italian readers only. Mi è capitato di dover configurare recentemente un ATA Cisco SPA 112 (uscito di produzione pochi mesi fa) per funzionare con il VoIP di WindTre. WindTre è molto parca di informazioni quando si richiedono le configurazioni VoIP per utilizzare un modem non WindTre, […]

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Networking Software development

Netgear WNCE3001 DHCP issues, and why luser-oriented interfaces are a mistake

In the past days, I bought a Netgear WNCE3001 wireless adapter to connect my pay TV decoder to the Internet. To configure it, you need to connect it to a PC Ethernet port, and use its configuration wizard to perform the initial configuration – which is just configuring which wireless LAN you want to connect to, and […]