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  • Host data transfer limit calculations and network protocol headers

    - by UpTheCreek
    OK, this might be a really stupid question, but... I'm building a web app that utilises websockets. There's fairly rapid messaging going on, so I've been taking a look at the network traffic with wireshark, to see if there's any way of reducing the amount of data we are sending over the wire, and hence costs. A typical message has approx 150 byte data payload, and according to wireshark the lower layer stuff takes up about: Ethernet: 14 bytes IP: 20 Bytes TCP: 20 Bytes My question is, are these network headers included in data transfer calculations? What about TCP ACK messages? (another 54 bytes according to wireshark) This may seem petty, but because we have so much messaging going on, and because the payload is a similar size to these headers, it's significant.

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  • Windows 7 Enterprise, Service Pack 1. Software MS Office Excel 2010

    - by user327560
    In Excel I understand there is no mechanism to customise & re-label the Rows & Columns (i.e. Renaming Col. A to some text like "Item Number" and so on. My question is regarding if it's possible to start Row Numbering at zero, or to determine a pre-allocated number of rows which contain my Headers, and then the first Row with the detail is infact seen as Row 1? Reason for question is I work multiple INternational Projects and we use Excel to trsack alot of activities & issues. Oddly, many people will refer to, for example "Point 7"... Some people mean the ID 7 (which I have the first Column dedicated to ID Number), some mean Excel Row 7, which infact could be really ID 3, or 4 from Col. A.... Any easy way or workaround to just use the Excel Row Numbers but select from when Row 1 is counted?

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  • I want to easily switch accounts for Twitter - is there a Firefox/Chrome/IE plug-in to do this?

    - by Edelcom
    I have several Twitter accounts to which I post messages. One is a personal, one is a professional, and a couple for each software system I developed. Does any one know of a plug-in for one of the major web browses on Windows or program that allows me to easily login to multiple Twitter accounts and easily switch between them ? I now have the 4 major browsers installed on my computer , each with it's own Twitter account (with the password and login info saved), but I think there must be a better way. On a side note: it is getting harder and harder to know to which StackOverflow alike site a question must be posted. So I hope this question here is considered on-topic.

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  • What TLDs should I use for my NS records for redundancy? (DNSSEC support required)

    - by makerofthings7
    Question As a general practice, is it a good idea to use multiple TLDs for the name servers? How should I choose between which TLD would be a good candidate for being the root server for my NS name? More Info I am switching over 800 DNS zones to an outsourced DNS provider. I originally planned on setting the zone names to nsX.company.com, but think it would be best to have multiple TLDs such as .net , .org and .info Since I plan on supporting DNSSec at company.com I think all the 1st tier Name servers must support it as well. Part of the inspiration for this question came from our provider UltraDNS. In their configuration screen for our domains, they actively verify and alert us if our name servers aren't exactly: pdns1.ultradns.net pdns2.ultradns.net pdns3.ultradns.org pdns4.ultradns.org pdns5.ultradna.info pdns6.ultradns.co.uk

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  • How can an RSA key be placed in a "non-folder"?

    - by Phil
    I lack a lot of knowledge regarding the subject so please excuse me if my question is very ignorant. I just started out with RSA key authentication to my test-server. It did not work at the beginning and I tried and tried and re-tried to no avail. Then I realised, I was creating "mkdir ~/.ssh" and then "mkdir ~/.ssh/authorized_keys" before placing the id_rsa.pub into the latter folder, which did not work. My question is: How can id_rsa.pub be placed in "authorized_keys", which is not created by "mkdir" therefore not a folder? Thank you.

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  • What is the world wide web? [closed]

    - by think123
    I don't know where to post this question, so please move it if necessary. Ok, so I've heard of how the professional hosting companies can create 'links' to the world wide web to register an unregistered domain. So that's where my question comes from. Is the world wide web a server to which servers link? Is it created by abstract linkage? I'm not sure. Also, what does it mean for the DNS to be updated throughout the whole world?

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  • Is the iPad in Europe totally unblocked?

    - by Mike
    One fast question: if I buy an iPad 3G in Europe will it work on other places without jailbreak? I ask this because I heard that, in Europe, iPads are not blocked to any telecom but I am not sure about that. On the other hand I am afraid do buy because I know that their cousins, iphones, are blocked to a specific telecom. Another question is regarding activation. As far as I remembered, my iPhone required me to do an activation step on iTunes and I remember it was also activated (or whatever) on the store (I remembered the salesman connected it to a computer and did some stuff before giving me the device). Is the iPad in europe totally free of operator? totally unblocked? thanks.

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  • Can I enlarge OS C: drive of my Windows 8 PC?

    - by Sorgatz
    Last year I got a new Western Digital WD Blue 500GB HDD to replace my old drive. The first thing I did was to install latest Windows 8. While installing Windows 8 I created 3 partitions, C drive for the OS and others for storage. The OS partition is 120GB (which at the time I thought would be plenty big) but I'm now realizing its too small! I wonder if it's possible to re-size HDD partition without reformatting and re-install my Windows 8. So that is my question, Can i enlarge os c drive of my windows 8 without having to re-format? I've used the Norton Partition Magic and Disk Management to make this happen but there doesn't seem to be any options to make it happen. Thanks for any help you guys can give regarding my question. I've worked hard to optimize my current install of Windows 8 and would hate to start all over again.

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  • GeForce GT 430 with 1 VGA port and 1 HDMI port can support dual monitor?

    - by Tendou Kishi
    This question is similar to 3 Monitors, 1 graphics card but with different video card. It has the same ports as GT 120 in that question. Would it support dual monitor? I don't need 3 monitors. Just 2 is good. Checked GeForce GT 430 Specs but have no idea whether it will support or not. While on it, can somebody explain how to know whether a graphics card support multiple display from such information?

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  • Should I be using Windows Live Mail or Outlook?

    - by Relequestual
    I have been using Windows Live Mail now for a few years, and like the interface, ect ect. Just having a clear out of my domains emails, and think I should set up the other accounts properly. I have Outlook (using 2010 beta), so I thought maybe I should use it? Can anyone give me reasons for and against both bits of software? I did look for some comparisons between the two, but can't find much. Plus I always value up to date information. Bit more background: Using 1 Hotmail and 5 IMAP accounts (possibly more). Use a Windows Mobile. Any way I can sync the calendar and tasks OTA to my hotmail and back down to outlook? I know this is probably more a discussion question (sorry), but I would argue that it can be answered, as it is a question relating to what I myself, in my circumstances would be best. Thanks in advance. Rel

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  • Where to run Java and PHP code continuously

    - by az1112
    I'm sorry if this is the wrong forum for a question like this, but you have to start asking questions somewhere to get anywhere :) The question is pretty simple: I need a server where I can run Java and PHP scripts 24 hours a day, 7 days a week. I need to be able to access this server via SSH, and I need to be able to retrieve the data generated by scripts using SCP. Also, I need to be able to run 10-20 scripts simultaneously. What is the name of the thing I should be looking for? Is it a dedicated server? I'm confused for 2 reasons: 1) because there seem to be all kinds of servers out there; 2) because most companies advertising dedicated servers seem to be aiming them at people who want to host websites. But I don't want to host a website; I just want to run my code.

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  • Share Only 1 folder using SMB

    - by SnippetSpace
    I want to share my "My Videos" folder using Windows's built in SMB. The problem is that when I decide to share my video folder and check it on another device, the path always is: networkname>username>my videos instead of just my videos I noticed that indeed sharing gets turned on from the user folder down to the video folder instead of just on the folder I selected. So now my question is why this is happening; And how cold I just display my "my Videos" folder on my remote device and not the entire path? BTW device in question is a hacked Apple TV. thank you for your help! Christopher

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  • Any script to replace Facebook "fake" links? (Facebook apps requiring installation before viewing content)

    - by Nicolas Raoul
    In Facebook, some links to articles or videos appear to be genuine links, but in fact there are leading to some "content viewing" Facebook apps, like "Dailymotion", "The Guardian", or "Yahoo!". Those apps usually require access to my email address, basic info, birthday, location, plus right to post on my behalf. Some even say in small letters "To use this app, you will be upgraded to Facebook Timeline": Workaround: Copy the name of the article/video Paste it into Google within quotes First result is the original unencumbered content. I don't want to install Facebook spyapps that provide zero value, so I do this every time. QUESTION:Is there a Greasemonkey script or similar, that would perform these 3 steps for me? I am using Chrome on Linux. I hesitated to post this question on WebApps, but over there they are clear that such questions should be posted on SuperUser.

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  • How to install GRUB command-line tools on OSX?

    - by beakr
    I need access to grub-mkrescue for a project I'm working on. I know that the GRUB command-line tools come builtin to Linux, but how do I get them on OSX? Is there a package? Is it built into the system somewhere? Is there an installer? CLARIFICATION: The question is not about installing GRUB as a bootloader on the Mac. The question is about installing the GRUB command line tools to do things like create bootable disk images of other operating systems.

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  • Fastest security check of file tree on NFS

    - by fungs
    I am currently experiencing very bad performance using the following on an NFS network folder: time find . | while read f; do test -L "$f" && f=$(readlink -m $f); grp="$(stat -c %G $f)"; perm="$(stat -c %A $f)"; done Question 1) Within the loop permissions are checked using the variables grp and perm. Is there a way to lower the amount of disc I/O for these kind of checks over the network (e.g. read all meta data at once using find)? Question 2) It seems like the NFS isn't tuned very well, the same operation on a similar network link via SSHFS take only one third of the time. All parameters are auto-negotiated. Any suggestions?

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  • MacPorts on mountain lion - cannot install apache2 due to gettext package

    - by jancha
    I have been having problem with installing gettext package from macports. When I am launching /opt/local/bin/port -v install apache2 it checks dependencies, and continues with gettext package installation. But the configure process freezes here: checking for egrep... /usr/bin/grep -E and nothing happens.. can wait hours, nothing changes. I tried to configure, make, make install manually for that package and it went all fine. But, when same configure is launched by ports, it hangs there. Question: 1) How can that be fixed? 2) Maybe I can somehow manually tell ports, that I installed that gettext package manually already? Sorry, if wrong "site" for this question. Felt most proper one.

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  • remove start.funmoods search from chrome

    - by Joe King
    I post this with much trepidation after my baptism by fire recently, and knowing that this question has been asked and answered already. My problem is that I cannot seem to remove start.funmoods as the default search engine when I type into the omnibox in Chrome - I have followed the instruction in the answer to the previous question on this topic. In particular: I deleted funmods using the control panel - add/remove programs Under wrench-tools-extensions funmods is not mentioned Under wrench-settings-manage search engines, there is nothing listed at all. Restarted chrome and rebooting have not helped.

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  • Help recovering lost text from a refreshed Chrome webpage (it was in the clipboard as well)? [closed]

    - by tobeannounced
    Possible Duplicate: Chrome: where is the location to save browse temporary files Ok, so here's what happened - and yes, it was pretty stupid by me: I wrote up and submitted a post on Stack Overflow It was not suited to be placed on Stack Overflow as someone pointed out to me, so I deleted the post (this was a few hours ago) I copied the text into a new question page on Super User, but didn't submit it yet I accidentally just refreshed the webpage that had the text, and the question has now been deleted from Stack Overflow I have Lazarus installed, however the Chrome version doesn't have many features and the text was not recoverable from there. I do not have a clipboard manager, but the text was copied to my clipboard - so is there any way to get this back (Windows 7)? Although the post on Stack Overflow was deleted, I suppose it would have existed in my cache - could I recover it from there? Would the post on Stack Overflow exist in an rss feed anywhere? Many thanks, and I hope I can find this - and I am sure that the solution will prove valuable for me (and others) in the not too distant future once again.

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  • Managing client passwords

    - by HurkNburkS
    I am just starting up a small website development business and one of the issues I am having is remembering passwords and account information for clients hosting, cpanel, ftp accounts etc. I was wondering what is the most suitable system / industry standard for controlling such information? Pretty marginal on the close there... I read the FAQ and I felt list this could be a common issue for webmasters, its defiantly not a coding questions so stackoverflow is out of the question and its not a broad question its focused on one particular aspect of being a webmaster.

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  • Is the console command cd a wildcard of sorts? [closed]

    - by Spiritios
    I was wondering while developing some application (though this is not a development question) if the cd command used in Windows is a wildcard or cross-platform command of sorts. I looked up on table with comands for Unix/Linux and MAC OS X and it turns out that it seems to be there. I am not a multi-os user, so I ask if anyone with experience in different OSes can tell me: If this command really exists and works If it has the same functionality (change directory) If there are any problems with its use If in any OS there is another command-line command that does the same in a better/more elaborate/more frequetly used way. Thanks in advance! (P.S.I am not 100% sure if this question belongs to this site or some other stackexchange site...) (P.P.S Any help in tagging this will be appreciated!)

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  • I do not understand -printf script

    - by jerzdevs
    I have taken over the responsibility of RHLE5 scripting and I've not had any training in this platform or BASH scripting. There's a script that has multiple pieces to it and I will ask only about the second piece but also show you the first, I think it will help with my question below. The first part of the script shows the output of users on a particular server: cut -d : -f 1 /etc/passwd The output will look something like: root bin joe rob other... The second script requires me to fill in each of the accounts listed from the above script and run. From what I can gather, and from my search on the man pages and other web searches, it goes out and finds the group owner of a file or directory and obviously sorts and picks out just unique records but not really sure - so that's my question, what does the below script really do? (The funny thing is, is that if I plug in each name from the output above, I'll sometimes receive a "cannot find username blah, blah, blah" message.) find username -printf %G | sort | uniq

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  • Running a dhcp server on windows 7 ultimate

    - by nikhil
    I'm trying to get my HP T5740 thin clients to connect to my local network without much success. I asked a question here but haven't got any response. I think that question should have been posted on serverfault instead. I was thinking that the problem seems to be that the thin clients aren't able to get an IP address when they are connected and I can't manually set it. So if I was to somehow set up a dhcp server on the network with my server that runs a 32 bit version of windows 7 ultimate edition. How do we set up a dhcp server in windows?

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  • Prevent specific applications from being run as administrator

    - by Unsigned
    Background Most installation toolkits have the ability to launch, automatically or otherwise, external programs after installation. This is often appears in the installer via such options as "Show readme", or "Start program". Issue The problem is, many of these installers are poorly coded, and do not drop permissions appropriately. For example, starting the application automatically, or opening the application's homepage in the browser, often results in launching the application or browser with the installer's Administrative privileges, or a "High" UAC integrity level! This has the potential to open up security breaches, by opening up the installed application, or a web page (and possibly browser add-ons), that are now running with elevated permissions. (This is the reason I strongly recommend never choosing auto-launch options when installing software.) Question The question is: Is there a way to prevent certain applications (such as a web browser) from ever being launched with Administrative privileges, i.e., an automatic drop-privilege?

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