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Search found 401 matches

by bscloutier
Tue May 22, 2018 9:31 am
Forum: Releases
Topic: JANOS v1.6.5 Released!
Replies: 0
Views: 74

JANOS v1.6.5 Released!

We have released v1.6.5 of JANOS. Updating to v1.6.5 is strongly recommended. Both the UPD for this update and the www. zip file for the corresponding DCP release (v2.1) are attached. To manually update: Transfer the UDP file to the /temp folder. Log into the Command Console (either using Telnet or ...
by bscloutier
Mon May 21, 2018 10:54 am
Forum: Security
Topic: Reducing the RADIUS of the Internet
Replies: 4
Views: 357

Re: Reducing the RADIUS of the Internet

I had been thinking about this. In testing by running with a low TTL we ran into problems where the JNIOR had difficulty reaching services it requires (like NTP) while locations perhaps even in Russia could still reach us. It seems to me that the standard large TTL should still be used for all outgo...
by bscloutier
Thu Apr 05, 2018 9:14 am
Forum: Security
Topic: Reducing the RADIUS of the Internet
Replies: 4
Views: 357

Re: Reducing the RADIUS of the Internet

So this test fails in that the service that is used to determine a location for an IP address is about 12 hops away. Here we see it is 13 from inside INTEG. Microsoft Windows [Version 6.1.7601] Copyright (c) 2009 Microsoft Corporation. All rights reserved. C:\Windows\system32>tracert ip-api.com Trac...
by bscloutier
Mon Apr 02, 2018 8:53 am
Forum: Security
Topic: Reducing the RADIUS of the Internet
Replies: 4
Views: 357

Re: Reducing the RADIUS of the Internet

The thinning effect is useful but one gets the feeling that systems within our own country may no longer be able to communicate with the unit. The further reduction of TTL to 12 begins to suggest a geographical radius. Note in the following how the unit now seems to be invisible in China. This might...
by bscloutier
Mon Apr 02, 2018 8:38 am
Forum: Security
Topic: Reducing the RADIUS of the Internet
Replies: 4
Views: 357

Re: Reducing the RADIUS of the Internet

Real World Test Luckily we have a neat way to test the effect of reducing TTL. We have a JNIOR we call HoneyPot sitting on the open Internet. Naturally it comes under a constant level of attack. For instance there is a fairly constant level of random login attempts on the Telnet port. On the JNIOR ...
by bscloutier
Mon Mar 19, 2018 4:58 pm
Forum: Hardware
Topic: JNIOR Serial Ports
Replies: 2
Views: 257

Re: JNIOR Serial Ports

It didn't help RS-232 that from the beginning no one fully understood how to document it. Some of us might remember the detailed signal diagrams explaining plus and minus 12V states, start and stop bits, and little endian order in the back of manuals. That level of detail was just adding to the conf...
by bscloutier
Fri Mar 16, 2018 4:28 pm
Forum: Hardware
Topic: JNIOR Serial Ports
Replies: 2
Views: 257

Re: JNIOR Serial Ports

Here is the source of additional confusion. The JNIOR transmits data on Pin 3 and therefore from the JNIOR's point of view THAT is Transmit Data (TX or TxD). But when that signal reaches the other end (say your PC) it is incoming data or Receive Data (RX or RxD). That is because from the point of vi...
by bscloutier
Fri Mar 16, 2018 3:32 pm
Forum: Hardware
Topic: JNIOR Serial Ports
Replies: 2
Views: 257

JNIOR Serial Ports

The JNIOR Model 410, 412 and 412 each have two available serial ports. Each port providing at least a 3-wire RS-232 interface. A 3-wire connection contains only the Transmit (Tx), Receive (Rx) and Signal Ground (GND) circuits. This is the bare minimum for Duplex communication or interfaces utilizing...
by bscloutier
Tue Feb 27, 2018 8:45 am
Forum: Hardware
Topic: Renesas RX63N JTAG Interface
Replies: 2
Views: 221

Re: Renesas RX63N JTAG Interface

Hardware The JTAG interface from a hardware perspective is documented well enough. You can find numerous descriptions with a simple search. It doesn't make sense for me to spend time trying to describe it yet again. There were several documents that I found useful. The following application note an...
by bscloutier
Mon Feb 26, 2018 3:30 pm
Forum: Hardware
Topic: Renesas RX63N JTAG Interface
Replies: 2
Views: 221

Re: Renesas RX63N JTAG Interface

Overview I would like to provide an overview of the Builder we use in production just as a reference before digging into the lowest-level details of the JTAG programming interface involved. As mentioned the Builder consists of a two-board system. One being the standard JNIOR Model 410 and the other...