Systems Administration

Got a Drupal-powered website? You may want to get patching now...

The Register - Thu, 01/17/2019 - 20:45
Open-source CMS gets a pair of critical fixes

Drupal has issued a pair of updates to address two security vulnerabilities in its online publishing platform. The vulns are a little esoteric, and will not affect most sites, but it's good to patch just in case you later add functionality that can be exploited.…

Port 443 vs 8443 confusion

Sysadmin - Thu, 01/17/2019 - 20:30

Hi guys I’m trying to access a site http://172.28.x.x:8443 but I’m not getting through.

I requested to have port 8443 opened but do I need port 443 open as well? What exactly is 8443 used for and how does it relate to https?

My guess is the application which uses port 8443 is using a secure browser for the connection? Thanks

submitted by /u/punkfay
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Given the reigns of Zendesk - what now

Sysadmin - Thu, 01/17/2019 - 20:23

Hey SysAdmins of the world,

I have just been given the reigns of Zendesk and asked to set it up properly with workflows and notifications and the works.

I am wondering if anyone has any good resources, be it manuals/books/videos on how to set it up and how it all works. I have used BMC TrackIt / Jira Service Desk / ManageEngine before but never Zendesk.

Thanks a heap.

submitted by /u/Phorc3
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CompSci Weekend SuperThread (January 18, 2019)

Computer Science: Theory and Application - Thu, 01/17/2019 - 20:05

/r/compsci strives to be the best online community for computer scientists. We moderate posts to keep things on topic.

This Weekend SuperThread provides a discussion area for posts that might be off-topic normally. Anything Goes: post your questions, ideas, requests for help, musings, or whatever comes to mind as comments in this thread.

Pointers
  • If you're looking to answer questions, sort by new comments.
  • If you're looking for answers, sort by top comment.
  • Upvote a question you've answered for visibility.
  • Downvoting is discouraged. Save it for discourteous content only.
Caveats
  • It's not truly "Anything Goes". Please follow Reddiquette and use common sense.
  • Homework help questions are discouraged.
submitted by /u/AutoModerator
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Big O coeficients

Computer Science: Theory and Application - Thu, 01/17/2019 - 19:52

I have these questions and solutions, but I have no idea how they get the coefficients. May some one please expalin:

Here is my efforts:

def factorial(n): x = 1 for i in range(2, n): x = x * i return x

Solution is T(n) = n + 1, T(n) = O(n) this one I got as x = 1 line runs once, so that is the 1 and then x = x * 1 runs max n times.

def loopy0(n): x = n for i in range(3, n+2): for j in range(5, n * 2): temp = i + j x = x + temp return x

Solution is T(n) = 8n^2 - 28n + 22, T(n) = O(n^2) but I was getting 1 + [(n + 2)(n * 2)] as first line x = n runs once, and then the lines temp = i + j runs max of n + 2 times n * 2.

def loopy1(n): x = factorial(n) for i in range(3, n+2): for j in range(5, n * 2): temp = i + j x = x + temp return x

Solution is T(n) = 8n^2 - 27n + 22, T(n) = O(n^2) but

def loopy2(n): x = n for i in range(3, n+2): for j in range(5, 10): temp = i + j x = x + temp return x

Solution is T(n) = 20n - 18, T(n) = O(n)

submitted by /u/Noitidart2
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Which Let’s Encrypt Utility Do you use for IIS

Sysadmin - Thu, 01/17/2019 - 19:41

So like the title says I want to get an idea of what the most popular Let’s Encrypt cert manager is for IIS. On Debian with Apache I use certbot but we have a small number of IIS services whose third party certainly are about to expire that I would like to move to Let’s Encrypt. Posh, command line or GUI are all fine. What do you use? Are you happy with it?

submitted by /u/adstretch
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Domain Account locking out, using tools but cant figure it out

Sysadmin - Thu, 01/17/2019 - 19:37

Hey guys,

We have a domain admin account that keeps getting locked out. Sometimes it doesnt happen for a day or two, then it happens for hours straight.

I downloaded the netwirx account lockout examinar and added his name. Today, I unlocked his account, about a minute later it gets locked out. Did an exam on the local workstation and I get the following logs:

Examining computer michael-pc for potential usage of stale credentials for ----\mbieber… Examining COM objects ok, nothing found Examining Windows services… Netwrix Account Lockout Examiner Examining scheduled tasks... Found scheduled task 'OneDrive Standalone Update Task-S-1-5-21-861409054-915169644-584457872-7422' for the account. Last run at: 1/17/2019 10:18:08 AM Found scheduled task 'User_Feed_Synchronization-{7964A173-5684-4D51-84C8-BBCDE956D0FF}' for the account. Last run at: 1/17/2019 3:45:40 PM Examining logon sessions... Interactive logon. From: Console. Examining network drive mappings… Cannot obtain credential information for drive S mapped under -----\mbieber Last 91 invalid logons: from MSTSC at 1/17/2019 4:14:38 PM from MSTSC at 1/17/2019 4:09:38 PM from MSTSC at 1/17/2019 4:04:38 PM from ::ffff:192.168.253.48 (\\MICHAEL-PC) at 1/17/2019 4:03:44 PM from ::ffff:192.168.253.48 (\\MICHAEL-PC) at 1/17/2019 4:03:35 PM from ::ffff:192.168.253.48 (\\MICHAEL-PC) at 1/17/2019 4:03:27 PM from ::ffff:10.0.0.6 (\\::ffff:10.0.0.6) at 1/17/2019 3:59:44 PM from ::ffff:10.0.0.6 (\\::ffff:10.0.0.6) at 1/17/2019 3:59:44 PM from ::ffff:10.0.0.6 (\\::ffff:10.0.0.6) at 1/17/2019 3:59:44 PM from ::ffff:10.0.0.6 (\\::ffff:10.0.0.6) at 1/17/2019 3:59:44 PM from MSTSC at 1/17/2019 3:59:37 PM from fe80::c827:68cc:ecfd:da08%5 (\\MICHAEL-PC) at 1/17/2019 3:54:35 PM from MSTSC at 1/17/2019 3:54:34 PM from MSTSC at 1/17/2019 3:54:34 PM from fe80::c827:68cc:ecfd:da08%5 (\\MICHAEL-PC) at 1/17/2019 3:54:33 PM from MSTSC at 1/17/2019 3:54:32 PM from MSTSC at 1/17/2019 3:54:31 PM from MSTSC at 1/17/2019 3:54:29 PM from MSTSC at 1/17/2019 3:54:28 PM from MSTSC at 1/17/2019 3:54:27 PM from fe80::c827:68cc:ecfd:da08%5 (\\MICHAEL-PC) at 1/17/2019 3:54:27 PM from MSTSC at 1/17/2019 3:54:26 PM from MSTSC at 1/17/2019 3:54:25 PM from fe80::c827:68cc:ecfd:da08%5 (\\MICHAEL-PC) at 1/17/2019 3:54:24 PM from MSTSC at 1/17/2019 3:54:24 PM from MSTSC at 1/17/2019 3:54:23 PM from fe80::c827:68cc:ecfd:da08%5 (\\MICHAEL-PC) at 1/17/2019 3:54:22 PM from MSTSC at 1/17/2019 3:54:22 PM from MSTSC at 1/17/2019 3:54:20 PM from fe80::c827:68cc:ecfd:da08%5 (\\MICHAEL-PC) at 1/17/2019 3:54:20 PM from fe80::c827:68cc:ecfd:da08%5 (\\MICHAEL-PC) at 1/17/2019 3:54:19 PM

And many more...

I removed the domain name from the logs. They have a site to site connection to azure (not really sure about the settings as we didnt do it).

I've also cleared all credentials in credential manager. I have no what what to look for based on these results.

The 10.0.0.0 network is their azure, and they have 2-3 servers there. They are on Office 365.

submitted by /u/avrealm
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Keep traking of servers and payments

Sysadmin - Thu, 01/17/2019 - 19:03

Hey everybody! I'm an indipendent developer (and thus sysadmin) and I would like to know how experienced people manage to keep track of updates, configurations, backups, payments for your servers, licenses... I just can't find a way to efficently remember everything!

submitted by /u/im_putinit
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Twitter. Android. Private tweets. Pick two... Account bug unlocked padlocked accounts

The Register - Thu, 01/17/2019 - 19:01
Cock-up went unnoticed for two Olympics, one World Cup, an EU referendum, and a US presidential election

Twitter has fessed up to a flaw in its Android app that, for more than four years, was making twits' private tweets public. The programming blunder has been fixed.…

Stop Task from being executed repeatedly

Tasker: Total Automation for Android - Thu, 01/17/2019 - 18:40

Hey guys,

I'm very new to tasker and this is my first post in this sub, so I'm sorry if this is against the rules.

I have a profile setup that activates when my Sleep alarm goes off which sends a notification to my phone. If I hit snooze and the alarm goes off again it sends the notification again. I basically want the task to be able to only run once every X hours. Is there a way I can accomplish that?

Any help is appreciated. Thanks.

submitted by /u/vlntnwbr
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The creeping IT apocalypse

Sysadmin - Thu, 01/17/2019 - 18:35

https://forrestbrazeal.com/2019/01/16/cloud-irregular-the-creeping-it-apocalypse/

"So how do you know if your job is going to disappear into the cloud? You don’t really need me to tell you. You already feel it in your bones. Repetition is a sure warning sign. If you’re building the same integrations, patching the same servers over and over again every day, congratulations – you’ve already become a robot. It’s only a matter of time before a small shell script makes it official."

submitted by /u/easyjet
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Open offices are terrible, so lets talk alternatives

Sysadmin - Thu, 01/17/2019 - 18:34

Everyone knows open offices are terrible, however reality (money) prevents us all from having private offices. Half height cubicles just make you feel like you are in a Dilbert cartoon. Work from home is only an option at more progressive companies.

What have you experienced/seen/thought of as an alternative to open offices that could be implemented to meet a middle ground between open and private offices?

submitted by /u/extremesanity
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Oracle Expands Cloud Business with Next-Gen Data Center in Canada

VMblog.com - Virtualization Information - Thu, 01/17/2019 - 18:20
Oracle today announced the opening of a Toronto data center to support in region customer demand for Oracle's public cloud, Oracle Cloud Infrastructure....(read more)

Latest Information Security Forum Digest Looks at Building Tomorrow's Security Workforce

VMblog.com - Virtualization Information - Thu, 01/17/2019 - 18:17
The Information Security Forum (ISF), the trusted source that senior security professionals and board members turn to for strategic and practical guidance on information security and risk management, today announced the release of Building Tomorrow's Security Workforce. ...(read more)

Man drives 6,000 miles to prove Uncle Sam's cellphone coverage maps are wrong – and, boy, did he manage it

The Register - Thu, 01/17/2019 - 18:10
Amazing how a big cash payout focuses the mind

A Vermont state employee drove 6,000 miles in six weeks to prove that the cellular coverage maps from the US government suck – and was wildly successful.…

Navigation bar edit is stuck

Tasker: Total Automation for Android - Thu, 01/17/2019 - 17:37

I tried to make a task using the navigation bar button edits, and now I lost my main navigation buttons.

I tried to restart my device, but the edit (putting clipboard as middle button) persists.

How can I reset my nav bar to the original way?

submitted by /u/AMinPhoto
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Beware of scam from “Domain Listings”

Sysadmin - Thu, 01/17/2019 - 17:07

We just received one of these scam invoices so they can "list our domain on the internet directory". Just giving everyone a heads up. I'm really curious as to who actually falls for this and pays it.

https://www.erikpelton.com/beware-of-scam-from-domain-listings/

I just realized that you can go to their website and see who all fell for this scam in their directory. Most of them in my area are churches.

submitted by /u/dustda18
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Thoughts on Mimecast

Sysadmin - Thu, 01/17/2019 - 17:04

We use Ironport for email security/encryption/spam filtering, but we're at end of life so we need to replace this. Because our unit is so old we pay a lot in licensing too.

The VAR that we work with is recommending Mimecast as a good alternative. They switched their office to that from Ironport a while back and are happy with it.

Since we pay a lot for Ironport this may cost about the same so that's good. Does anyone here have experience with it (good or bad)?

Thanks!

submitted by /u/Spid3rdad
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FCC: Oh no, deary me. What a shame. Too bad, so sad we can't do net neutrality appeal during the US govt shutdown

The Register - Thu, 01/17/2019 - 17:02
Not so fast, there, Ajit...

America's broadband watchdog, the FCC, has asked the courts to postpone an appeal against its net neutrality repeal out of "an abundance of caution" due to the partial US government shutdown.…

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