Show Notes: linuxunplugged.com/466

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Show Notes: coder.show/472

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Show Notes: linuxunplugged.com/424

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Show Notes: linuxunplugged.com/415

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Show Notes: linuxunplugged.com/389

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Show Notes: linuxunplugged.com/362

The post The Hidden Cost of Nextcloud | LINUX Unplugged 362 first appeared on Jupiter Broadcasting.

Episode Links:

linuxactionnews.com/93

The post Linux Action News 93 first appeared on Jupiter Broadcasting.

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Show Notes:

Gas Pump Skimmer Sends Card Data Via Text

• Skimming devices that crooks install inside fuel station gas pumps frequently rely on an embedded Bluetooth component allowing thieves to collect stolen credit card data from the pumps wirelessly with any mobile device. The downside of this approach is that Bluetooth-based skimmers can be detected by anyone else with a mobile device. Now, investigators in the New York say they are starting to see pump skimmers that use cannibalized cell phone components to send stolen card data via text message.

• Skimmers that transmit stolen card data wirelessly via GSM text messages and other mobile-based communications methods are not new; they have been present — if not prevalent — in ATM skimming devices for ages.

• But this is the first instance KrebsOnSecurity is aware of in which such SMS skimmers have been found inside gas pumps, and that matches the experience of several states hardest hit by pump skimming activity.

• see also Gas Theft Gangs Fuel Pump Skimming Scams

Erasing hard drives – dd might be enough – Dan talks about how he erased the drives

• I recently upgraded several 3TB drives to 5TB drives and no longer needs the smaller drives. I usually used DBAN, but this time, it failed to run and I have no idea why

• I started looking around for upgrades in case my newer hardware didn’t work with this version of DBAN

• In September 2012, Blancco of Finland announced its acquisition of DBAN – Windows binary – no use to me

• There is an unofficial fork of DBAN that is actively maintained. The dwipe program that DBAN uses has been forked and is available as a standalone program called Nwipe, which is actively maintained.

• Appears to be more than one unofficial dban fork

• nwipe is included with Parted Magic so I paid my $11 and downloaded UNetbootin and tried to install it

• I failed to get my latest version (2017_06_03) of Parted Magic to boot so I resorted to letting UNetbootin download and install Latest_Live and I think that was 2.4

• I was told DBAN is drive abuse and that dd is sufficient

• Highly recommended NAS configuration – KIds don’t try this at home!

• Originally thought to be serial, butlater confirmed to work in parallel

• Discussion on: when you power cycle, how long do you want to power on?

• Next, tried nwipe but found that that took too long

• Going back to Parted Magic, I found the disk erase UI to have a few interesting features

• Then, I managed to get my SAS2008 card to work, and started doing 8 drives at a time

• dd is always an option, but I found it more convenient to use Parted Magic. Why? I didn’t have to script it and I can use the Secure Erase feature

Feedback

• A question about database migrations – apgdiff SQL Manager – SQLFairy – Dan used to use a tool for designing the database, but hasn’t use one lately. Now he constructs the DDL on the fly to amend the database and keeps them aside for upgrading the production database. Dan once kept the DDL for FreshPorts in a repo, but no longer does. Now he just backs up.

• ZFS Configuration new System76 Oryx pro

• Nigel Brownsey wrote in about Password security all about length

• PostgreSQL password hashing & backups

Round Up:

• The HDFS Juggernaut – Hadoop Distributed File System

• Plans for Partitioning in PostgreSQL v11

• debian-policy: Packages should be reproducible

• Everything You Always Wanted to Know
  About Optical Networking –
  But Were Afraid to Ask
  slides – Youtube video

• Looking at public Puppet servers

• Airbnb’s preferred smart lock vendor accidentally bricks 500 door-locks

• I Bought a Book About the Internet From 1994 and None of the Links Worked

The post Leaky Pumps | TechSNAP 332 first appeared on Jupiter Broadcasting.

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Apple’s New File System: Who Cares?

• Apple’s Hierarchical File System

• Apple File System

ZFS, jails, FreeBSD

• FreeBSD Jails

• Origins of FreeBSD Jail and why imperfect virtualization is good

• Jails are like little virtual machines (jails) running on a bigger machine (the jail host)

• From the jail host (often just referred to as the host), you can see into the jails, see everything that’s running, monitor, etc.

• Stuff in the jail cannot see outside the jail and have no interactions with the host

• You can configure the host so that the jail can access stuff on the host (e.g. a tape drive) but that requires explicit action by the sysadmin.

• Simplified concept of a FreeBSD Jail: create a directory, install FreeBSD in there, chroot, done.

Feedback

• Changing bacula volume sizes pt2

• When to choose MySQL over Postgres?

• Bacula System

• File sharing in diverse environment

• Pin entry pad randomised feature

• Good $TIME_OF_DAY!

Round Up:

• FreeNAS Corral relegated to “TECHNOLOGY PREVIEW” status

• Dallas’ emergency sirens were hacked with a rogue radio signal

• Malware Reaches Play Store as Google Wages War Against BankBot Trojan

• Prisoners built two PCs from parts, hid them in ceiling, connected to the state’s network and did cybershenanigans

• Historian

Other links:

• Bacula copy job via SQL

• The Cuckoo’s Egg

• Acme Klein Bottle

The post Tales of FileSystems | TechSNAP 315 first appeared on Jupiter Broadcasting.

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Researchers demonstrate how PINs and other info can be gathered through phone movement

• Team was able to crack four digit-PINs with 70 percent accuracy on the first try, with 100 percent accuracy by try number five

• A site accessed with malicious code can open the device to such sensor-based monitoring working in the background when browser tabs are left open.

• The team suggests a number of ways to help combat vulnerabilities, including regularly changing PINs and quitting out of any apps not currently in use

• Dan suggests: Simple way around this: randomize the display of numbers on the keypad. I think this should be standard for all PIN entry. I recall seeing this somewhere, years ago, but I don’t recall where. I’ve always wondered why I’ve never seen it again. If the numbers have a narrow field of vision, nobody can watch over your shoulder.

• A better article on the issue

• The PDF of the study

• From the PDF: . In the latest Apple Security Updates for iOS 9.3 (released in March 2016), Safari took a similar countermeasure by “suspending the availability of this [motion and orientation] data when the web view is hidden”x

Computer security is broken from top to bottom

• Robert Watson spoke at the very first BSDCan

• There are three main fundamental causes of insecurity: technology complexity, culture, an the economic incentives of the computer business.

Deep Dive starts with Dan’s first blog post about PostgreSQL

• PostgreSQL

• PostgreSQL < 9.6 has DATADIR is the same for all versions

• PostgreSQL 9.6+ on FreeBSD, each major version has it’s own DATADIR

• Installing in a FreeBSD jail means you can easily upgrading another jail, then start using it

Feedback

• 10 messages this past week. Requests for deep dives on PostgreSQL, DNS, ZFS, Jails.

• The guy who asked us about that free DNS service, wrote in to say he has no connection with them.

• Building pfsense box

• Suggestion for a Simple Inventory & Change Management Software

• Raidz-1 with hotspare vs raidz-2

Round Up:

• Hacker sets off all 156 emergency sirens in Dallas

• Allan Jude Interview with Wendell

• The TP-Link M5350 has a XSS exploit via text message. Responds with admin password in clear text. Original article in German

• Building a NAS

The post Cyber Liability | TechSNAP 314 first appeared on Jupiter Broadcasting.

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Show Notes:

Internet privacy

• The House just voted to wipe out the FCC’s landmark Internet privacy protections

• Vote Summary

• Who represents You in the U.S. Congress

• Five Ways Cybersecurity Will Suffer If Congress Repeals the FCC Privacy Rules

• A VPN can stop internet companies from selling your data — but it’s not a magic bullet

• How ISPs can sell your Web history—and how to stop them

Alleged vDOS Owners Poised to Stand Trial

• Police in Israel are recommending that the state attorney’s office indict and prosecute two 18-year-olds suspected of operating vDOS, until recently the most popular attack service for knocking Web sites offline.

• On Sept. 8, 2016, KrebsOnSecurity published a story about the hacking of vDOS, a service that attracted tens of thousands of paying customers and facilitated countless distributed denial-of-service (DDoS) attacks over the four year period it was in business. That story named two young Israelis — Yarden Bidani and Itay Huri — as the likely owners and operators of vDOS, and within hours of its publication the two were arrested by Israeli police, placed on house arrest for 10 days, and forbidden from using the Internet for a month.

• According to a story published Sunday by Israeli news outlet TheMarker.com, the government of Sweden also is urging Israeli prosecutors to pursue formal charges.

• Law enforcement officials both in the United States and abroad say stresser services enable illegal activity, and they’ve recently begun arresting both owners and users of these services.

ZFS is what you want, even though you may not know – Dan talks about why he likes ZFS

• The following is an ugly generalization and must not be read in isolation
• Listen to the podcast for the following to make sense
• Makes sysadmin life easier
• treats the disks as a bucket source for filesystem
• different file system attributes for different purposes, all on the same set of disks
• Interesting things you didn’t know you could do with ZFS

Feedback

• Dealing with waste heat

• PostgreSQL vs MySQL

The following were referenced during the above Feedback segments:

• Dan has bought custom & standard size air filters for computers from these folks

• Dan’s first MySQL post from January 2000

• 17-Year-Old Corrects NASA Mistake In Data From The ISS

• Dan’s first PostgreSQL post from September 2000

Round Up:

• Setting the Record Straight: containers vs. Zones vs. Jails vs. VMs

• Dishwasher has directory traversal bug

• Apple Says It Fixed CIA Vulnerabilities Years Ago

• Data breach disclosure 101: How to succeed after you’ve failed

• LastPass releases fix browser extension security flaws

• Google takes Symantec to the woodshed for mis-issuing 30,000 HTTPS certs

• 17-Year-Old Corrects NASA Mistake In Data From The ISS

• That Time I Trolled the Entire Internet

• Dan’s external Nagios instance

The post Privacy is Dead | TechSNAP 312 first appeared on Jupiter Broadcasting.

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House Passes Long-Sought Email Privacy Bill

• The U.S. House of Representatives on Monday approved a bill that would update the nation’s email surveillance laws so that federal investigators are required to obtain a court-ordered warrant for access to older stored emails.

• This is a very short piece of legislation. You can read it quickly, but it is an amendment. Basically, it’s copy/cut/pasting into the existing act, so you have to read it in context of the OLD act.

• Under the current law, U.S. authorities can legally obtain stored emails older than 180 days using only a subpoena issued by a prosecutor or FBI agent without the approval of a judge.

• Based on a 1986 law created in the days when cell phones did not contain email. Back then, the standard was store and forward, not the central storage so common today. There was no cloud.

• EFF’s Surveillance Self-Defense guide.

• This is very important. What is also important is protecting privacy when crossing borders. Your rights must be preserved when crossing borders. Trouble is, it seems we have no rights when doing so.

Here’s What Transport for London Learned From Tracking Your Phone On the Tube

• Advertising? I can see how this is useful for more than just advertising. Traffic flow. Knowing about time from A to B. Mention EZPass and monitoring of badges to determine flow.

• Signs announced trial, opt out by disabling wifi.

• The documents also seem to suggest that if TfL switched on tracking full time it could offer real time crowding information to passengers – so we could see a CityMapper of the not-too-distant future telling us which stations to avoid.

• That sounds simlar to how Waze and Google Maps collect real-time data on traffic congestion.

• Collecting information is one thing. Controlling access to that information is vital. As we’ve seen so many times in the past, it is the use of that data for unintended purposes which is of most concern.

• Rainbow tables

GitLab Postmortem of database outage of January 31

• This came from Shawn. We covered this incident in eposide 305.

• I want to make it clear from the start, we are not mocking GitLab. There is no joy to be taken here.

• On January 31st 2017, we experienced a major service outage for one of our products, the online service GitLab.com. The outage was caused by an accidental removal of data from our primary database server.

• What a horrible feeling that engineer then had. Imagine, for a moment. Production has just been wiped out… OMG.

• Backups could not be found, nor could they be used. It was all gone.

• I can imagine lots and lots of waiting for stuff to finish. Very stressful. Much hope, but very stressful.

• Wow, could not access their own projects. Ouch. Almost want their own repo offline, but then accusations of not dog fooding, etc.

• Prometheus monitorin

• Some places take the approach of making staging the hot backup for production. Exactly the same. Move production onto staging hardware if required.

• “I don’t remember where I saw it (probably hackernews), but someone proposed to constantly recreate staging from production’s backup. This way we would have an up-to-date staging version and frequently tested backup recovery process.”

Feedback:

• Should I convert to FreeNAS

• Follow Up Bacula

• possible malware distributor

Round Up:

• No more ransom – from Alejandro

• Semi-Critical Intel Atom C2000 SoC Flaw Discovered, Hardware Fix Required – from Shawn

• Ticketbleed – from Shawn

• Yahoo, MSN Struck by Advanced Malvertising Campaign

• Factory That Made Exploding Galaxy Note 7 Batteries Catches Fire

• US Judge Ordered Google to Hand Over Emails Stored On Foreign Servers to FBI

• Vizio settles with FTC, will pay $2.2 million and delete user data

• WordPress Kept Users And Hackers In The Dark While Secretly Fixing Critical Zero-Day

• Diehard Coders Just Rescued NASA’s Earth Science Data

• University attacked by its own vending machines, smart light bulbs & 5,000 IoT devices

• Bored with ho-hum cloud backups? Use Usenet (yes, Usenet!) instead

• Unpacking the rack-mount chassis – YouTube

• Moving tower system into rack mount chassis – YouTube

• Yes, an APC AR3100 rack can fit into a Subaru Outback

• APC AR3100 rack assembly – YouTube

• Moving the rack into place – YouTube

The post Metadata Matters | TechSNAP 306 first appeared on Jupiter Broadcasting.

SourceForge sees downtime, and we examine their infrastructure, a new pervasive hackgroup has been exposed and their track record is fascinating.

Plus a Hacking Team Round up, a wide variety of audience questions, our answers & much, much more!

Thanks to:

• Get Paid to Write for DigitalOcean

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— Show Notes: —

SourceForge Downtime

• SourceForge suffered a large data corruption problem and was down for a number of days, slowly restoring services as they could
• “The Slashdot Media sites experienced an outage commencing last Thursday. We responded immediately and confirmed the issue was related to filesystem corruption on our storage platform. This incident impacted all block devices on our Ceph cluster. We consulted with our storage vendor when forming our next steps”
• As part of this, we learned a bit about the backends of sourceforge and slashdot
• Server platform is CentOS Linux.
• We use an Open Source virtualization platform and have in recent years achieved a 75%+ reduction in physical server count through widespread virtualization.
• We use an Open Source storage platform, Ceph, with spinning disks and SSD.
• The storage backing our services is a mix of ext4, XFS and NFS.
• Our backup solution is Open Source, backing on to popular cloud storage platforms.
• Our sites use Open Source database platforms including MongoDB and flavors of MySQL and PostgreSQL.
• We leverage scalable data solutions including Hadoop and ElasticSearch.
• Slashdot is backed by Perl. SourceForge is backed by Python. Both language stacks are entirely Open Source.
• And the SourceForge developer services are backed by the Apache Allura code base, which we Open Sourced and delivered to the Apache incubation process.
• “We’re prioritizing the project web service (used by many projects using custom vhosts), mailing lists, and the ability to upload data to our download service. Downloads (40+ TB of data)”
• Most Recent Update – Sourceforge Blog
• A Post mortem is expected once everything is restored

Black Vine Group behind Anthem breach

• In a report last week Symantec said it was Black Vine that broke into the health insurer “Anthem” system’s and stole more than 80 million patients records.
• The group has the resources to customize malware, and uses zero-day vulnerabilities in Microsoft Internet Explorer to launch watering-hole attacks.
• Black Vine’s malware Mivast, was used in the Anthem breach, according to Symantec.
• Anthem said the hack likely began in May 2014, but that it didn’t realize its systems had been compromised until January. The company, which is one of the largest health insurance providers in the U.S., disclosed the breach in February. Hackers made off with personal data including names, birth dates, member ID numbers and Social Security numbers.
• Like other Black Vine attacks, The Mivast malware was signed with a fake digital certificate. (more on that below)
• Since 2012 Black Vine has gone after other businesses that deal with sensitive and critical data, including organizations in the aerospace, technology and finance industries, according to Symantec. The majority of the attacks (82 percent) were waged against U.S. businesses.
• During its research, Symantec discovered Black Vine began using exploits around the same time as other hacking groups. Each group delivered different malware and went after certain organizations,
• The fact that they used the same exploits as other groups suggests the attackers relied on the same distribution network.
• One of the group’s first attacks came in December 2012 against gas turbine manufacturer Capstone Turbine, Symantec said.
• That hack used the IE exploit CVE-2012-4792 and delivered the Sakurel malware.
• Symantec noted that the malware was signed with a digital certificate attributed to a company called Micro Digital, fooling Windows into believing the program was legitimate.
• In 2013 and 2014, Black Vine targeted companies in the aviation and aerospace industries. One third-party blog cited by Symantec noted that in 2013 specific employees at a global airline were sent spear phishing emails containing a URL that instructed them to download Hurix.
• Symantec claimed some Black Vine members have ties to Topsec, a Chinese IT security company, and the group has access to the Edlerwood framework
• PDF

Hacking Team Roundup:

• Hacking Team claims it always sold exploits and malware strictly within the law
• Hacking Team and Boeing planned Drones that would infect your computer via WiFi etc
• Microsoft issues patch for Windows Kernel 0-day leaked in Hacking Team breach
• Netragard, a company that buys and sells exploits, has decided to stop buying exploits after the fallout from the Hacking Team compromise
• FBI agents deceive judges, ignore time limits, don’t tell computer owners after they’ve been hacked, and don’t get ‘super-warrants’ for webcam snooping
• Hacking Team promises to rebuild its surveillance software
• An interview with Hacking Team’s CEO

FreeNAS Mini Review by Toms Hardware

Feedback:

• PfSense Kills SSDs?

• Recommended RAID for Random Read Performance

• Scale Out Storage over ZFS? – Like GlusterFS

• ssl ponderings

• SysAdmin Day Book Sale

• LINUX Unplugged 103 Multitrack Remaster – FEEDBACK REQUESTED

Round Up:

• Intel’s 3D memory is 1,000 times faster than modern storage
• “Dating” site Ashley Madison, which specialized in organizing discreet affairs, was compromised and is being extorted by the attackers. Attack was apparently motivated by the fact that the site charges a $19 fee to erase your personal information, and then apparently doesn’t actually erase it
• New FCC Rules May Prevent Installing OpenWRT on WiFi Routers
• Reported Samsung SSD TRIM bug was actually a bug in linux
• Google officially ends forced Google+ integration—First up: YouTube
• Author of DenDroid malware worked as white-hat intern at FireEye
• One of the people responsible for SWATting Krebs in 2013 has pled guilty
• Experian hit with a class action lawsuite over actions involving ID Theft Service

The post SourceForge's Downfall | TechSNAP 225 first appeared on Jupiter Broadcasting.

This time on the show, we’ll be sitting down to talk with Craig Rodrigues about Jenkins and the FreeBSD testing infrastructure. Following that, we’ll show you how to roll your own OpenBSD ISOs with all the patches already applied… ISO can’t wait!

This week’s news and answers to all your emails, on BSD Now – the place to B.. SD.

Thanks to:

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– Show Notes: –

Headlines

pfSense 2.1.4 released

• The pfSense team has released 2.1.4, shortly after 2.1.3 – it’s mainly a security release
• Included within are eight security fixes, most of which are pfSense-specific
• OpenSSL, the WebUI and some packages all need to be patched (and there are instructions on how to do so)
• It also includes a large number of various other bug fixes
• Update all your routers!

DragonflyBSD’s pf gets SMP

• While we’re on the topic of pf…
• Dragonfly patches their old[er than even FreeBSD’s] pf to support multithreading in many areas
• Stemming from a user’s complaint, Matthew Dillon did his own work on pf to make it SMP-aware
• Altering your configuration‘s ruleset can also help speed things up, he found
• When will OpenBSD, the source of pf, finally do the same?

ChaCha usage and deployment

• A while back, we talked to djm about some cryptography changes in OpenBSD 5.5 and OpenSSH 6.5
• This article is sort of an interesting follow-up to that, showing which projects have adopted ChaCha20
• OpenSSH offers it as a stream cipher now, OpenBSD uses it for it’s random number generator, Google offers it in TLS for Chromium and some of their services and lots of other projects seem to be adopting it
• Both Google’s fork of OpenSSL and LibReSSL have upcoming implementations, while vanilla OpenSSL does not
• Unfortunately, this article has one mistake: FreeBSD does not use it – they still use the broken RC4 algorithm

BSDMag June 2014 issue

• The monthly online BSD magazine releases their newest issue
• This one includes the following articles: TLS hardening, setting up a package cluster in MidnightBSD, more GIMP tutorials, “saving time and headaches using the robot framework for testing,” an interview and an article about the increasing number of security vulnerabilities
• The free pdf file is available for download as always

Interview – Craig Rodrigues – rodrigc@freebsd.org

FreeBSD’s continuous testing infrastructure

Tutorial

Creating pre-patched OpenBSD ISOs

News Roundup

Preauthenticated decryption considered harmful

• Responding to a post from Adam Langley, Ted Unangst talks a little more about how signify and pkg_add handle signatures
• In the past, the OpenBSD installer would pipe the output of ftp straight to tar, but then verify the SHA256 at the end – this had the advantage of not requiring any extra disk space, but raised some security concerns
• With signify, now everything is fully downloaded and verified before tar is even invoked
• The pkg_add utility works a little bit differently, but it’s also been improved in this area – details in the post
• Be sure to also read the original post from Adam, lots of good information

FreeBSD 9.3-RC2 is out

• As the -RELEASE inches closer, release candidate 2 is out and ready for testing
• Since the last one, it’s got some fixes for NIC drivers, the latest file and libmagic security fixes, some serial port workarounds and various other small things
• The updated bsdconfig will use pkgng style packages now too
• A lesser known fact: there are also premade virtual machine images you can use too

pkgsrcCon 2014 wrap-up

• In what may be the first real pkgsrcCon article we’ve ever had!
• Includes wrap-up discussion about the event, the talks, the speakers themselves, what they use pkgsrc for, the hackathon and basically the whole event
• Unfortunately no recordings to be found…

PostgreSQL FreeBSD performance and scalability

• FreeBSD developer kib@ writes a report on PostgreSQL on FreeBSD, and how it scales
• On his monster 40-core box with 1TB of RAM, he runs lots of benchmarks and posts the findings
• Lots of technical details if you’re interested in getting the best performance out of your hardware
• It also includes specific kernel options he used and the rest of the configuration
• If you don’t want to open the pdf file, you can use this link too

Feedback/Questions

• James writes in
• Klemen writes in
• John writes in
• Brad writes in
• Adam writes in

• All the tutorials are posted in their entirety at bsdnow.tv
• There, you’ll also find a link to Bob Beck’s LibReSSL talk from the end of May – we finally found a recording!
• Send questions, comments, show ideas/topics, or stories you want mentioned on the show to feedback@bsdnow.tv
• If you want to come on for an interview or have a tutorial you’d like to see, let us know
• Watch live Wednesdays at 2:00PM Eastern (18:00 UTC)
• Next week Allan will be at BSDCam, so we’ll have a prerecorded episode then

The post Base ISO 100 | BSD Now 44 first appeared on Jupiter Broadcasting.