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SpinRite v6.1 Release #3 Guest:
The 3rd release of SpinRite v6.1 is published and may be obtained by all SpinRite v6.0 owners at the SpinRite v6.1 Pre-Release page. (SpinRite will shortly be officially updated to v6.1 so this page will be renamed.) The primary new feature, and the reason for this release, was the discovery of memory problems in some systems that were affecting SpinRite's operation. So SpinRite now incorporates a built-in test of the system's memory. For the full story, please see this page in the "Pre-Release Announcements & Feedback" forum.
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Be sure to checkout “Tips & Tricks” Dear Guest Visitor → Once you register and log-in please checkout the “Tips & Tricks” page for some very handy tips!
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BootAble – FreeDOS boot testing freeware
To obtain direct, low-level access to a system's mass storage drives, SpinRite runs under a GRC-customized version of FreeDOS which has been modified to add compatibility with all file systems. In order to run SpinRite it must first be possible to boot FreeDOS.
GRC's “BootAble” freeware allows anyone to easily create BIOS-bootable media in order to workout and confirm the details of getting a machine to boot FreeDOS through a BIOS. Once the means of doing that has been determined, the media created by SpinRite can be booted and run in the same way.
The participants here, who have taken the time to share their knowledge and experience, their successes and some frustrations with booting their computers into FreeDOS, have created a valuable knowledgebase which will benefit everyone who follows.
You may click on the image to the right to obtain your own copy of BootAble. Then use the knowledge and experience documented here to boot your computer(s) into FreeDOS. And please do not hesitate to ask questions – nowhere else can better answers be found.
(You may permanently close this reminder with the 'X' in the upper right.)
If you sign up for IPv6 you don't just get one IP address but probably a minimum of 65,536! So there'd be not just be 65,536 ports to scan, but 65,5536 prorts to scan on each IP address! If you're wanting to scan your Internet-facing router there's no knowing which IP addresses the ISP might leave open to use to contact the router itself for management or updates. So in short, it's complicated.
Well that would be a cheezy ISP indeed. You should get a /64 ... meaning 2^64 IP addresses. From https://en.wikipedia.org/wiki/IPv6#Larger_address_space "The standard size of a subnet in IPv6 is 2^64 addresses, about four billion times the size of the entire IPv4 address space."
In any case, you would only scan the device making the request (still a single IP.)
So, rather than "he could write it but then he'd have to kill you", it's more like: he could write it but you'd be dead before it finished running.
And THAT'S why I'm avoiding IPv6 as a home user like the plague.
May your bits be stable and your interfaces be fast.
Ron
Just block all inbound traffic from all sources except for connections responding directly to outbound connections initiated by local processes and allowed by you (the human).
i.e. "Block outbound connections that do not match a firewall rule you have created. Inbound packets are allowed over allowed connections that have been initiated locally and when using specified protocols/ports/interface types. Block all others."
PHolder's right... I'd LOVE to play with IPv6. And I really want to scan all 65,536 TCP ports by default, rather than just the first 1024. I once limited it to the service ports due to server bandwidth constraints back when I was on the other side of a pair of T3 lines. But I've had ample bandwidth ever since I moved to Level3.
But I'll need to get SpinRite and Beyond Recall into their initially finished condition before I can make time for that. And Michael's request for UDP would be great to support as well.
For what it’s worth I’ve been running an online IPv6 port scanner since 2011. It is similar in operation to ShieldsUp and supports scans of a limited number of UDP ports, as well as common and user-defined TCP ports. The scanner is open source and available at:
Online IPv6 Port Scanner and Firewall Tester
IPscan, the online IPv6 port scanner, or firewall tester, which checks responses to an ICMPv6 ping and multiple user-selectable TCP and UDP ports.
All (constructive) feedback and suggestions welcome.
