Archive for the ‘Network-and-equipment’ Category
Posted by jpluimers on 2017/06/02
Just one example; it applies to virtually all consumer IoT and routers I know: upgrading is hard especially if it’s undocumented on how to keep your configuration.
–jeroen
Posted in Internet, IoT Internet of Things, Power User, routers, TomatoUSB | Leave a Comment »
Posted by jpluimers on 2017/05/11
OS X
Android / Chromebook:
iOS 6:
gsp1.apple.com*.akamaitechnologies.com
iOS 7:
www.appleiphonecell.comwww.airport.us*.apple.com.edgekey.net*.akamaiedge.net*.akamaitechnologies.com
iOS 8/9:
Windows
Amazon Kindle (Fire)
OS X settings are in:
/Library/Preferences/SystemConfiguration/CaptiveNetworkSupport/Settings.plist
--jeroen
via:
Posted in Captive Portal, Communications Development, Development, Hardware, Internet, Internet protocol suite, Network-and-equipment, Power User, Software Development, TCP | Leave a Comment »
Posted by jpluimers on 2017/05/09
For hooking up SFP and SFP+ ports on Mikrotik devices you basically have two options:
- Direct Access Cable (passive and affordable for 1 and 2 meters; active and more expensive for more than 3 meters)
- SFP/SFP+ modules with LC-LC optic fiber cable in between them (pairs of modules are more expensive than passive DAC, but the fiber is a lot cheaper)
Choosing the SFP/SFP+ modules is a bit intimidating as the MikroTik SFP module compatibility table – MikroTik Wiki has very few details.
Then I found sfp_all-150601132341.pdf (archived) which lists many of the SFP and SFP+ modules including their specifications.
Since neither the matrix nor the PDF contains links to the products, here is a small list of what I could source last year and is compatible with both the CCR1009 routeres and CRS226 switches:
- DAC allowing for two-way traffic compatible with both SFP and SFP+:
- 10G SFP+ modules (I think they are compatible with SFP as well):
- 1G SFP modules:
–jeroen
via: Connect CCR1009 with CSR226 over a longer distance than 3 meter – MikroTik RouterOS
Posted in Internet, MikroTik, Power User, routers | Leave a Comment »
Posted by jpluimers on 2017/04/25
MikroTik has great hardware, but getting things to work can be a bit ehm intimidating.
So here are some links that were useful getting my CCR1009 and CRS226 configurations to do what I wanted.
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Posted in DNS, Hardware, Internet, IPSec, MikroTik, Network-and-equipment, OpenVPN, Power User, PPTP, routers, VPN, WinBox | Leave a Comment »
Posted by jpluimers on 2017/03/30
I tried to power both Raspberry B+ and Raspberry 2 B devices via the USB ports of both a Fritz!Box 7490 and Fritz!Box 7360.
At first this works, but the Raspberry B+ devices over time would become unstable: not being able to ping and/or boot.
So below are some links on power requirements and powering Raspberry Pi A, B, A+, B+, 2B and zero.
Fazit/TL;DR: use an external power supply when available.
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Posted in *nix, Development, Fritz!, Fritz!Box, Hardware Development, Internet, Linux, openSuSE, Power User, Raspberry Pi, SuSE Linux | Leave a Comment »
Posted by jpluimers on 2017/03/13
I hadn’t done a lot with pfSense in the past, which I regret a bit since I discovered this really cool feature: Sniffers, Packet Capture – PFSenseDocs.
The coolness isn’t so much that you can capture packets, but that it’s compatible with tcpdump and Wireshark (which has become available natively for Mac like 2 years ago).
Which means that you can download captures and open them in Wireshark.
So it’s as easy as 1,2,3:
- Set-up the capture on your router https://a.b.c.d/diag_packet_capture.php and start it
- Stop the capture and download the file
- Open the file in Wireshark or convert it to text using tshark
–jeroen
Posted in *nix, *nix-tools, Internet, Monitoring, pfSense, Power User, routers, tcpdump, Wireshark | Leave a Comment »
Posted by jpluimers on 2017/01/23
This was a tad difficult to find as I searched for “Convert Fritz!Box to Switch” instead of “Convert Fritz!Box to Access Point”.
Since I had an old Fritz!Box 7360 lying around (from my ADSL era) and wanted to extend the cabled LAN for my brothers Fritz!Box 7490 with some low-bandwidth devices (max 100 megabit/second) I searched for Switch. My bad.
Oh I had to factory reset it as well as I forgot the management credentials. The AVM help on this is cumbersome: Loading the FRITZ!Box factory settings | FRITZ!Box 7360 | AVM International but the xs4all help includes a web-reset procedure as part of Internet: Reset procedures van mijn FRITZ!Box 7360 which translates to:
- Switch off the Fritz!Box (as this procedure needs to be done within 10 minutes of switching it on)
- Connect LAN2 to your computer
- Switch on the Fritz!Box
- Wait for a DHCP IP or (if you know the IP addresses) configure IP manually
- Go to the web-interface URL
- Indicate you forgot your password:
Forgot your password?
- Indicate you want a factory reset:
Restore Factory Settings
Anyway: with the above steps it becomes a Managed Switch (and if you don’t disable WiFi: Access Point too) that uses the primary internet connection as DHCP server (so it gets an IP address itself as well which means you can manage it).
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Posted in ADSL, Fritz!, Fritz!Box, Internet, Power User | Leave a Comment »
Posted by jpluimers on 2017/01/20
For my Link Archive via linux port forwarding to external ip – Google Search:
Need to look at this more closely, but it looks like you need PREROUTING, FORWARD and POSTROUTING and two NATs (DNAT and SNAT), as this graph from Port Forwarding Using iptables – SysTutorials shows:
PACKET IN
|
PREROUTING--[routing]-->--FORWARD-->--POSTROUTING-->--OUT
- nat (dst) | - filter - nat (src)
| |
| |
INPUT OUTPUT
- filter - nat (dst)
| - filter
| |
`----->-----[app]----->------'
–jeroen
Posted in *nix, *nix-tools, Internet, Internet protocol suite, iptables, Linux, openSuSE, Power User, routers, SuSE Linux, TCP | Leave a Comment »
Posted by jpluimers on 2017/01/13
In this tutorial you will learn how to configure pfSense to load balance and fail over traffic from a LAN to multiple Internet connections (WANs) i.e.… – Joe C. Hecht – Google+
Source: In this tutorial you will learn how to configure pfSense to load balance and…
Posted in Internet, pfSense, Power User, routers | Leave a Comment »
Posted by jpluimers on 2016/12/05
Time after time issues pop up related to MAC addresses that start with a4 or a 6.
[WayBack] nanog: Forwarding issues related to MACs starting with a 4 or a 6 (Was: [c-nsp] Wierd MPLS/VPLS issue)
The underlying issue has to do with switches interpreting too much information of (un)encrypted traffic and dropping them because they wrongly think it’s plain ethernet traffic they need to handle.
MAC addresses starting with a 4 or 6 have have a common bit pattern (likekly that fails with 12 and 14 as well) that cause failure in certain network equipment that’s hard to trace as there is limited.
[WayBack] Christian Vogel – Google+ (Physics, Electronics, Software) explains this way better at [WayBack] When your MAC address starts with 4 or 6, weird things can happen and it’s not always fixable… – Kristian Köhntopp – Google+:
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Posted in Internet, Network-and-equipment, Power User, routers, VPN | Leave a Comment »
The Wiert Corner - irregular stream of stuff 