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  1. S

    Cisco ASA IPS Monitoring

    I may be inheriting a number of Cisco ASA firewalls to manage. I know ASA well enough, but one of their major concerns is the IPS functionality and doing security monitoring. In the past I've just dumped the stuff to Syslog and into a SIEM device. Currently, I have some staff who are...
  2. S

    How far away is it now?

    Here is an interesting (simplified) summary of these concepts: https://www.youtube.com/watch?v=XBr4GkRnY04
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    How far away is it now?

    I don't think this is correct either. 13.3 billion light years is how much distance the light has traveled since it was emitted. This is NEITHER the distance then, nor the distance now. In fact, the accepted diameter of the observable universe is approximately 93 billion light years, and...
  4. S

    Powerline Networking and Aluminum Wiring

    I had a wire smoke out in an old house with aluminium wiring. Made scorch marks all the way down the wall and all around the socket. Probably 30 seconds longer and it would have burnt the house down if I hadn't run to the back room to hit the breaker. I can't imagine if I was sleeping. And...
  5. S

    Super noob with VPN's

    Uhm, if they're on the same LAN network, they should be able to share files. No VPN required. It sounds to me like you have the Windows firewall turned on, or some permissions issue with file sharing (or perhaps file sharing is disabled on one of the machines). Obviously, if you want some...
  6. S

    Fastest Remote Desktop Solution for Watching Videos / Gaming

    To be fair, Youtube pushes 720p down over a 10-15mbps connection alright. BUT, they have had the chance to pre-encode it, which makes a huge difference. Doing it in realtime is probably not practical, even at 720p.
  7. S

    Doubt in networklayer

    The transport layer (Layer 4) does not care about addresses. It just doesn't. It is designed to manage host connectivity, delivery of data, reliability and some other things. It just assumes that the packet will be delivered to the correct address. This is what TCP/UDP/ICMP does. It handles...
  8. S

    I need advice from an experienced IT proffesional about this (job market).

    This is the wrong forum for this post. Regardless, your list is absurd. No job posting EVER required that list. Pick 15 of those things and some whiny boss might want those, but most GOOD jobs in IT are somewhat specialized. That said, if you've never done any programming and you've...
  9. S

    AMD Smoother than Intel?

    This is completely bullcrap. A CPU is nothing like a car. In fact, general desktop operations don't tax the CPU very much, and those that do, the x86 instruction set does not vary. The "time to process" difference is on the scale of nanoseconds, which is 4-5 orders of magnitude (10,000...
  10. S

    Computer network problems - desktop pc only

    Certainly sounds like an issue with your ISP to me. No sense running out and doing something silly like wiping out your computer (?!?!?) until you know what the issue is. See if you can find the cause of the drops. Ping local systems, ping remote systems, try pinging from your laptop to...
  11. S

    Why is it so hard to find a good laptop?

    It's your day! http://au.ibtimes.com/articles/540156/20140224/apple-macbook-air-2014-a8.htm
  12. S

    Electronics in Rice for Water Damage

    TLDR; The rice is more effective if the ambient air is humid, since it keeps the local air very dry. The fan would be more effective given very dry air to start with. P.S. Check your local humidity level (use weather.com or something). Humidity between 10% and 40% is pretty dry. Between...
  13. S

    Any way to test your network "locally" the way it is seen "remotely".

    In theory, Tor works with any ports, but I think most exit nodes restrict the majority of them, so it probably isn't the best solution. I suggest using a cell phone/3G connection, or a VPN.
  14. S

    (How) Do divining rods work?

    OK. Sure. Are you a wealthy man?
  15. S

    There's your problem, sir

    It's the electronic hypocondriac. This is the same person who shows up at the doctor convinced they have hepatitis because of their soft stool and cramps. Turns out they've just been taking large doses of black-market antibiotics due to fears about an imagined staph infection and have wrecked...
  16. S

    E2500 5Ghz WDS w/Tomato limited to 30mbit throughput, with 130 link rate?

    sorry, i commented before reading all the thread.. carry on.
  17. S

    Newbie question about password hashing

    To be fair, most systems use weaker hashes such as MD5. This hash type is vulnerable to all sorts of cracking attacks including full key-space rainbow tables, allowing the cracking of passwords of nearly arbitrary complexity. Ideally, someone would use a good hashing algorithm like SHA3 or...
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    Difference between instruction sets and processor architecture?

    Yes, you did, but the "architecture" as formally defined is just the combination of the microarchitecture and the instruction set (as a whole). But in order to be REALLY simple, here is an example. Instruction Set Architectures: The actual description of valid commands for the CPU...
  19. S

    Quantum Physic's Tella-Transportation & Life After Death

    Wait, what? Two sentence fragments does not a question make. There are a lot of things we can only see indirectly. We "know" the Higgs Boson is real, but we only "know" this by the extremely subtle change in energy profile released from a high-energy collision. We're not seeing Higgs...
  20. S

    Dormat Phone lines converted to Network??

    Can you check the certification on the cables? They need to be CAT5e certified to get 1Gbps. Standard CAT5 (which is likely used) will only get you reliable to 100MBps and will cause endless problems if you try to fool it into working at 1G.
  21. S

    MX Records - Speed up propagation time?

    Go set your MX domain's TTL record to 60 seconds a day or so before the change. Then, when you change, it will take a MAXIMUM of 60 seconds (and usually faster) to swap. 60 seconds is a common minimum for your DNS provider, but some may let you go even lower. Just set it back to a few hours...
  22. S

    Question about TTL & dropped packets/gaming

    As was said, TTL is a "time to live" and should be set to 64. There is no reason and no performance benefit to changing it. You may have changed your MTU (maximum transmission unit), which affects packet sizes, but neither numbers of 17200 and 3600 make sense in that area. A normal MTU...
  23. S

    Odd network adapter problem

    Hmm... I'll second the idea that it sounds like a problem with the network driver, possibly a memory leak, or something similar.
  24. S

    Laptop underperforming when plugged in

    Yep, wrong forum. But... Manually check the "advanced" properties of your power settings.
  25. S

    Why do power plants need electricity to start up?

    Some types of plants need to build up slowly. Nukes, for example, can't (safely) just be switched on in an hour. It takes days of control checks and gradually ramping up the power. The region-wide outages experienced over the last few years (the most recent i know if was in Southern...
  26. S

    Why do power plants need electricity to start up?

    Most power plants use turbines that rely entirely on electromagnets. Your small electric motor or DC generator uses a permanent magnet (sometimes a ferrite, or if necessary, expensive NiB "rare earth" types). In order to make them reasonably cost efficient and sufficiently strong, however...
  27. S

    Curious question: Are Smartphone and Tablet processors are "less advanced"...

    That's true enough, although, I would contend that a huge part of AMD's disadvantage is the fabrication process. Intel has almost a generation on everyone, and that means AMD must be more conservative with their designs these days. They really hit it out of the park when they brought up...
  28. S

    Curious question: Are Smartphone and Tablet processors are "less advanced"...

    We have had this discussion recently here. There is nothing inherent in the INSTRUCTION SET that ARM uses that makes it power friendly. It is ENTIRELY in the architecture. Does the CPU use aggressive branch prediction? What is the latency/throughput of floating point operations? Do you have...
  29. S

    Curious question: Are Smartphone and Tablet processors are "less advanced"...

    Ahh, but a lot of the modern tablet chips use a DIFFERENT set of advanced tricks (such as selective power down, etc). Although, it might be fair to say that those end up in desktop CPUs pretty quickly too. It's a bit like comparing a Corvette or even a big truck to a Chevy Volt, or a Smart...
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    New to DSLRs, talk to me about lens sizes

    Those images are very soft, blurry away from the center. Plus the vignette. I still advise against the screw-on lenses. They are generally quite poor. Sure there are a FEW that are high quality, but those definitely aren't the cheapest ones. The "good" macro lenses are $500+, because...
  31. S

    How to examine traffic between devices communicating over local wireless?

    And it's only $73,000. Perfect!
  32. S

    So how much load can I safely put on the wire

    I guess it depends on the spread. If you're using a traditional bulb with a diffuser and reflector, especially one that's warm color balanced (which eats a bit of the light) and especially if it's an AC circuit (which eats more power), I guess... I built a 50W LED panel for a project in school...
  33. S

    Rambus Question

    Not really. The pipeline was too deep and did not adequately consider the effect of latencies, and the hard-cap on clock speed imposed by thermal limitations. On release, the P4 was around 2Ghz and Intel claimed it was designed to scale through 10Ghz in 5-6 years. If that indeed happened, the...
  34. S

    So how much load can I safely put on the wire

    Good point. 200W of high-output LEDs would shine like a stadium light. That's not exactly an indoor installation. :-D
  35. S

    One wire to rule them all

    SATA is a point-to-point protocol with extremely limited range. In this, USB is far cheaper to implement, can support hubs, can handle a single device with multiple controllers (Webcam + Microphone), etc, etc. These are all things SATA can't do, because it was designed to be a high-speed...
  36. S

    New to DSLRs, talk to me about lens sizes

    The image quality of screw-on lenses is usually abysmal, especially away from the center of the image. I'd rather use some point-n-shoot than a screw on lens on TOP of a kit lens on a DSLR (cheaper too).
  37. S

    One wire to rule them all

    Part of it is also in patents. A lot of the protocols you mentioned have patent encumbrance and you must pay royalties for the use of the protocol...
  38. S

    If a personal home server is hacked. Are other PC's vulnerable?

    Agreed. An attacker can easily use a tool like ettercap to snoop traffic on your internal network. They could use something like Responder.py to attack NBT name resolution to steal your credentials. Having a knowlegable attacker on your local LAN is probably bad news. Sure it's unlikely, but...
  39. S

    Global Warming: Roads versus trees

    The Kyoto targets were a reduction of between 0.2% and 1.1% per year depending on country, or 0.1-2.4% adjusting for population growth. ALMOST EVERY REPUTABLE SCIENTEST agreed with these targets... You are still attacking a straw man, aggressively and absurdly, and making up information in...
  40. S

    Global Warming: Roads versus trees

    Your wording was chosen carefully, don't be a dick and claim it wasn't. Have you ever studied feedback systems? Many feedback systems are startling stable, but a little "kick" in one direction that is outside of the capability of the system to respond and the entire system collapses in a...
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