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Sydney Harbour
WEEKLY NEWSLETTER 5 - 10 APRIL 2021

Hello and Welcome,

Meetings This Week

NO MEETINGS

Meetings Next Week

Programming - Tuesday, 13 Apr - 5:30 pm (6:00 pm meeting start) - 8:00 pm

Hi Team,

We will be running this meeting normally (face-to-face) or using Jitsi; details later by e-mail.

See the Progsig Meeting Reports:

https://­sites.google.com/­site/­progsig/

The next meeting is on Tuesday 13th April 2021, at 6 pm.

Regards,

— Steve OBrien

Web Design - Saturday, 17 Apr - 1:30 pm (2:00 pm meeting start) - 4:00 pm

We will be running this meeting normally (face-to-face) or using Zoom; details later by e-mail.

— Steve South

Schedule of Current & Upcoming Meetings †

24 2021/04/03 — 14:00-17:00 — 03 Apr, Sat — Penrith Group
25 2021/04/09 — 10:00-12:30 — 09 Apr, Fri — Friday Forum, L1 Carmichael Room
26 2021/04/09 — 12:30-15:30 — 09 Apr, Fri — Communications, L1 Woolley Room
27 2021/04/13 — 17:30-20:30 — 13 Apr, Tue — Programming, L1 Woolley Room or via Jitsi
28 2021/04/17 — 13:30-16:30 — 17 Apr, Sat — Web Design, L1 Woolley Room or via Zoom
29 2021/04/20 — 09:30-12:30 — 20 Apr, Tue — Tuesday Group, L1 Woolley Room
30 2021/04/23 — 09:30-12:30 — 23 Apr, Fri — Digital Photography, L1 Woolley Room or via Zoom
31 2021/04/27 — 17:30-20:30 — 27 Apr, Tue — MAIN Meeting, L1 Carmichael Room or via Zoom

† As decided after assessing the Members' wishes via the latest Online Survey.


ASCCA News:


Tech News:

Slow LAN speed on Windows 10 PCs [FIX].

See the WindowsReport article by Madalina Dinita | Last update: August 19, 2020.

Go to Advice number 5:

5. Disable Large Send Offload (LSO)

  • Press Windows Key + X and choose Device Manager from the list.
  • Double-click on your Network Card and click on the Advanced tab.
  • Select Large Send Offload V2 (IPv4) and set the value to Disabled.

Disable LSO in Network | Advanced
  • Do the same for Large Send Offload V2 (IPv6).
  • Click OK.

If you're experiencing slow LAN speed on your Windows 10 PC, the issue might be the "Large Send Offload" feature.

A couple of users reported that they fixed the problem simply by disabling the "Auto Disable Gigabit" option [ disable the Disable option? — Ed. ], so be sure to try that as well.

Keep in mind that not all network adapters support this feature, so if you can't find it, it means that your adapter probably doesn't support it.

To understand why this has such an effect on LAN transmission time, go to the PeerWisdom article by crutledge April 3, 2013.

Note the date — 2013 — so you know how long Microsoft has been aware of this problem!

An interesting quote:

This LAN problem can be summed up as offload data, segment data, discard data, wait for a timeout, request retransmission, segment retransmission data, resend data.

The big delay is waiting for the timeout clock on the receiving server to reach zero. And the whole process is repeated the very next time a large TCP message is sent.

So is it any wonder that this can cause severe network performance issues?

— Ed.

Sometimes Windows connections are quick; other times, each data transfer stalls for 30 SECONDS OR MORE!
On the other hand, LINUX is ALWAYS lightning-fast on my gigabit network! — Ed.

Read More »

NBN Co restarting HFC sales

See the iTWire article by Stephen Withers | Tuesday, 30 March 2021 12:22 pm.


NBN's Cable Modem
Cable modem.


Cable modems are once again being delivered to NBN Co, and the company has announced it will resume orders for HFC services from 24 May 2021.

As reported in February, NBN Co had to stop accepting new HFC services orders due to a shortage of cable modems.

Modems still in stock were used to connect premises occupied by medically vulnerable customers, and more than 230 such customers were connected since 2 February 2021.

NBN Co says it will continue to offer priority service to vulnerable customers.

HFC services were also provided to customers who moved into premises disconnected from the network and those living in or working at premises where the disconnection date had passed and where no legacy service was available.

More than 47,000 premises have been connected to the HFC network since 2 February 2021.

A further 31,000 connections are being made to premises without a legacy phone or internet service and premises occupied by medically vulnerable customers.

The plan is to complete as many of these connections before taking new orders on 24 May 2021.

RSPs will be provided with details of NBN Co's plan on 8 April 2021. Still, it will be contingent on continued deliveries of modems, which means it is possible that customers in areas served by HFC will not be able to order services immediately.

"We are confident that we will receive regular deliveries of new HFC modems in the weeks and months ahead to enable the resumption of new HFC connections from 24 May 2021," said NBN Co chief customer officer Brad Whitcomb.

"We appreciate customers' patience during this global chipset shortage that has temporarily delayed some new HFC connections to the NBN network."

Read More »

Major Apple Bug Threatens Browser Security.

See the Infopackets article by John Lister on March 30 2021, at 01:03 pm EDT.

Apple has warned users to check their portable devices to ensure they are up to date. A bug that affects iPhones, iPads and Apple Watches may already be under attack by hackers.

The bug affects WebKit, which is the underlying software for Safari and any other web browsers which use Apple's operating system iOS. Specifically, it covers how web content appears and how browsers keep track of which sites a user has recently visited, allowing features such as the browser back button to work correctly.

Apple isn't giving many details of exactly how the bug works or could be exploited, which is standard practice when there's still a risk it could be exploited before users are patched.

Browser Itself a Danger Point.

All Apple is saying right now is that "processing maliciously crafted web content may lead to universal cross-site scripting. Apple is aware of a report that this issue may have been actively exploited." (Source: apple.com)

Ordinary cross-site scripting takes advantage of a compromised web page to access data through a web browser. The scripts could mean attackers were getting information from cookies or posing as the user on other sites. It also helps make some social engineering attacks more convincing and easier to pull off, leading to malware attacks.

The problem here is universal cross-site scripting (XSS). That's particularly problematic as it means exploiting a bug in a browser or associated software rather than a web page. That can mean attackers were getting access to information exchanged with multiple websites even if those sites are themselves secure.

Most Apple Devices Updatable.

Users need to check their devices via the Settings Tool -> Software Update option to ensure devices are updated. The correct patch level is iOS 14.4.2 or Apple Watch OS 7.3.3, which includes a bug fix. The update is available for the following devices:

  • iPhone 6s and later iPad Pro (all models)
  • iPad Air 2 and later
  • iPad 5th generation and later
  • iPad mini 4 and later
  • iPod touch (7th generation)
  • Watch Series 3

In all cases, the update should roll out automatically. (Source: techradar.com)

Read More »

Online Keyboard Simulator

Referred by John Lucke: See the Online Keyboard Simulator page.

You can now design your own personal keyboard with this secure online simulator.


Online Keyboard Simulation

Select from dozens of key colour combinations, case shapes and sub legends, E.g. Arabic, Chinese and more. Click on the keyboard and drag it around to view it from different angles.

When you are happy with your new keyboard design, you can even take a 60-second typing speed test. Click on "TEST" and then highlight the "random words box" and start typing.

Here is a typical script they ask you to type:

" — wide lie slabs fine short he now back loss plate way ask age best room new sand crowd wing he pine u —"

Not altogether inspiring! [ — Ed. ]

— John Lucke

Read More »


Fun Facts:

Last week's Newsletter banner image.

Did you proof-read the banner image in last week's SWAY version of the Newsletter?

Well, I didn't either.

Surely pictures from the internet don't contain errors?

However, one eagle-eyed Member noticed that it said, "The quick brown fox jumped over the lazy dog", supposedly containing every letter in the alphabet.

That should have been "jumps"; otherwise, there's no "s" in the sentence. Here's the original image:


Fox JUMPED instead of jumps

A photo-editing expert sent this image:


JUMPED changed to jumps

And a rival photo-expert sent me this one:


Jumped changed to jumps

And finally, the real thing:


The quick brown fox jumps over lazy dog

Many thanks to the eagle-eyed Member, the Photo-editing expert and the rival expert Photo-editor — David Wastie, Josephine Wiseman and John Lucke in no particular order.

You all win trips to the city WITHOUT FACE-MASKS.

— Ed.


Meeting Location & Disclaimer

Bob Backstrom
~ Newsletter Editor ~

Information for Members and Visitors:

Link to — Sydney PC & Technology User Group
All Meetings, unless explicitly stated above, are held on the
1st Floor, Sydney Mechanics' School of Arts, 280 Pitt Street, Sydney.
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