Posted by jpluimers on 2017/03/06
DNS traffic within corporate networks should also be considered a channel that an attacker can use to implement a fully functional, bidirectional C2 infrastructure.
Source: [WayBack] Cisco’s Talos Intelligence Group Blog: Covert Channels and Poor Decisions: The Tale of DNSMessenger
–jeroen
Posted in DNS, Internet, Power User, Security | Leave a Comment »
Posted by jpluimers on 2017/01/27
These seem to be the brands to look into:
Source: Multiple wifi access points / seamless handoff – Spiceworks
–jeroen
Posted in Internet, Power User, Ubiquiti, WiFi | 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:
Forgot your password?
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).
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 2016/12/27
As I got rid of some final hard coded IPv4 stuff, earlier this month I said good-bye to Ziggo cable internet.
Today, the xs4all ADSL line finally got disconnected as well:
My old trusty Fritz!Box 7340 showing ADSL got disconnected for good on 20161217
Which means that the years of running an xs4all DSL connection over mxStream, KPN FAST ADSL and xs4all ONLY are over. Oh the days:
Posted in ADSL, fiber, History, Internet, ISP, KPN, Power User, xs4all, Ziggo/UPC/A2000 | Leave a Comment »
Posted by jpluimers on 2016/12/21
Some of the [Wayback] Ken Thompson – Wikiquote entries come from a great [Wayback] 1983 ACM Turing Award Acceptance Lecture [Wayback] “Reflections on Trusting Trust”.
That lecture used to be on http://cm.bell-labs.com/who/ken/trust.html
But it isn’t, and was not in the WayBack machine and neither in the Google Cache [Archive.is] because of the [Wayback/Archive.is] robots.txt. Historic link rot galore!
Edit 20210728: by now it is in the Wayback machine again; the earliest archived copy is from 2001, it also shows that as of april 2015 it is gone from the bell labs server.
The lecture is about [Wayback] compiler viruses and viruses actually did this at least a few times: Wayback: Delphi in 2009 and to [Wayback] XCode in 2015.
A few nice links from [Wayback] ACM Classic: Reflections on Trusting Trust – Google Groups though:
And archived versions of (I hope accurate) copies of the article:
Finally I found a PDF copy of the original ACM prints that Greg Ganger of Electrical and Computer Engineering at Carnegie Mellon University has online. It’s archived too.
–jeroen
Further reading:
Posted in *nix, Conference Topics, Conferences, Delphi, Delphi 4, Delphi 5, Delphi 6, Delphi 7, Development, Event, Fun, Internet, link rot, Power User, Quotes, Software Development, T-Shirt quotes, WWW - the World Wide Web of information, xCode/Mac/iPad/iPhone/iOS/cocoa | 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+:
Posted in Internet, Network-and-equipment, Power User, routers, VPN | Leave a Comment »
Posted by jpluimers on 2016/11/29
It can auto-tweet your status to an ISP.
via:
–jeroej
Posted in Development, Internet, Power User, Python, Scripting, Software Development | Leave a Comment »
Posted by jpluimers on 2016/11/24
I totally missed this because most of my WayBack activity is through the JavaScript buttons on my Chrome toolbar, so here it is:
A month ago, the WayBack machine introduced a new beta that allows for searching inside the archives.
Some links:
There actually seem to be two betas going on at the same time:
–jeroen
Posted in InternetArchive, Power User, WayBack machine | Leave a Comment »
The Wiert Corner - irregular stream of stuff 