Search Results

Search found 4940 results on 198 pages for 'understanding'.

Page 76/198 | < Previous Page | 72 73 74 75 76 77 78 79 80 81 82 83  | Next Page >

• Troubleshooting "connection reset" error on my linux server

  - by Chris

  I fervently hope someone here can help me with the problem I am experiencing. I am a programmer, and I have very little understanding of linux sysadmin terminology/concepts. I am attempting to troubleshoot a problem with my website. It is a Facebook app, and whenever I try to connect using Chrome, I get an error stating that the "connection was reset". I have been Googling for four days straight trying to find a solution to this problem, but no joy. A big part of the problem is that I do not understand the terminology being employed, and the output from many of the tools referenced is likewise indecipherable to me. I am running a VPS with CentOS 5, apache, PHP, and MySQL. I could spam this post with a ton of information from my iptables, apache, etc but if anyone needs information from my server, please let me know how to get it, and I will post it here. Thank you for any help you can offer!

  Read the article

• TCP video streaming: TCP throughput(rate) and RTT

  - by misteryes

  we know that a rough estimation of TCP rate is: WINDOW/RTT, where WINDOW is the min(CWIN, RWIN), CWIN is the congestion window size of the sender, while RWIN is the receiving window. nowadays, the encoding rate of videos may be 1000KB/s(8000kbit/s), if RTT is 500ms, it needs the window size to be 2000KB. But we know that usually the receiving window size is below 64KB, there is a big gap. so if RTT is too large, TCP streaming is not possible? Is my understanding right? thanks!

  Read the article

• SQL Server backup and restore process

  - by Nai

  Just wondering what backup processes you guys have. I am currently operating a weekly full database backup with daily differential backups. My understanding is that with such a set up, the difference between Full recovery mode and Simple recovery mode is that with Full recovery mode, I will be able to use the transaction logs to rollback my DB to a specific point in time having applied the latest differential backup. Assuming that in my scenario, the last differential backup serves as my last and ultimate 'save point', I don't see a need to rollback my DB even further back using the logs. This brings me to my question: Is there any additional benefits to be had using a Full recovery mode for my current backup process?

  Read the article

• Under what circumstances can/will a 10BASE-T device slow down a 100BASE-T or faster network?

  - by Fred Hamilton

  Suppose I have a 10BASE-T device, but everything else on my network is 100BASE-T or faster. When I attach the 10Mbit device, one of two things could happen: It could be passed through as 10BASE-T, making whatever it's connected to slow down to 10BASE-T, or It could be converted to a higher speed. I'm looking for all the plausible examples where #1 could happen; where attaching this 10Mbit device will slow down other traffic. I sorta think it can't happen - that as soon as it comes into contact with other traffic it has to get retimed to be inserted into the higher rate traffic (so no slowdown aside from the extra bits from the connection), and that when it's not contacting other traffic, who cares if it's only 10Mbit? Basically I'd like a better understanding of any impact of inserting a slow device into a fast ethernet network.

  Read the article

• What permissions are needed to do an LDAP bind to an Active Directory Server

  - by DrStalker

  What permissions are needed to perform an LDAP bind to an active directory server? I have a central domain (call it MAIN) that has two-way trusts to domains in other forests (call then REMOTE and FARAWAY) Using MAIN\myaccount as the username and my password I can bind to REMOTE fine, but not to FARAWAY; I get an invalid credentials response 80090308: LdapErr: DSID-0C09030B, comment: AcceptSecurityContext error, data 525, v893 In all other ways the trusts seem to work fine. What permissions do I need to check to figure out why the bind is failing? My understanding is that anyone in AUTHENTICATED USERS should be able to bind to LDAP, but that only seems to hold true for some domaians and not others.

  Read the article

• After enabling raid0, blue screen of death

  - by thegreyspot

  Hi! Im trying to get a raid0 setup going. I have a 750 gb hdd with the OS on it and two 80gb HDD. For right now, I just want to raid0 on the two 80Gb hdd. When I enable raid in my Bios, Win7 has a BSOD during boot. As far as I understand I need to install raid drivers. However how can I do this? The win7 DVD doesnt seem to have a driver install option. Any suggestions? Thanks EDIT: I saw that there was as seperate setting for the 4th and 5th sata ports. So I pluged in my OS drive into there and left it on IDE. Still didnt work though, am I miss understanding that idealogy?

  Read the article

• Is 192.168.122.1 a valid IP?

  - by Louise Hoffman

  From my understanding the networks is as follows Class A: 10.0.0.1 - 10.255.255.254 Class B: 172.16.0.1 - 172.16.255.254 Class C: 192.168.0.1 - 192.168.0.254 But then I look at ifconfig virbr0 on my Linux computer: virbr0 Link encap:Ethernet HWaddr 42:40:99:CB:02:7F inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:16 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:2842 (2.7 KiB) Here the IP address is 192.168.122.1. Is that an allowed IP? And if so, is 192.168 than actually a Class B network?

  Read the article

• Kill Leaking Connections on SQL Server 2005

  - by Thierry Brunet

  We have a legacy ASP application that somewhere leaks SQL Connections. In Activity Monitor, I can see a bunch of idle processes with Last Batch times over an hour old. When I look at the T-SQL command batch, these are always FETCH API_CURSORXXX, which from my understanding is caused by improperly closed ASP ADO Recordsets. While we are try to pinpoint the offeding code, is there a way for me to monitor which requests open which cursors? I'm assuming profiler, but I'm not sure what I should be monitoring exactly. I can see a bunch of calls to sp_cursoropen but I don't see the API_CUSORXXX name anywhere. Second, would anyone be able to suggest a script we could run to kill these processes based on the Last Batch time 10 minutes and Last Batch Command being FETCH API_CURSORXXX? For various reasons, we unfortunately don't have any SQL Server DBAs.

  Read the article

• Looking for Full Screen Web-Browser in Vizio or Samsung TV's

  - by ScottCate

  I see that Google TV, inside Sony, has a Chrome browser. Is the same thing possible inside Vizio, or Samsung, or any other TV? The 42" Vizio is $499 at Costco, and the Sony with Google TV is $999. We're looking at a buch of these TV's that have build in Wi-Fi, to place around the office as Big Dashboards, and I don't want to have a computer attached to get web content on the screen. It's my understanding that both Samsung Apps, and Vizio Apps, use Yahoo Widgets as their ap engine. Anyone know of a way to get a full screen browser going, without attaching a computer? We thought of attaching an Apple TV, which can be jailbroken, but that is just another piece of equipment to lose, break, etc. Thank you!

  Read the article

• DNS protocol message example

  - by virtual-lab

  hello there, I am trying to figure out how to send out DNS messages from an application socket adapter to a DNSBL. I spent the last two days understanding the basics, including experimenting with WireShark to catch an example of message exchanged. Now I would like to query the DNS without using dig or host command (I'm using Ubuntu); how can I perform this action at low level, without the help of these tools in wrapping the request in a proper DNS message format? How the message should be post it? Hex or String? Thanks in advance for any help. Regards Alessandro Ilardo

  Read the article

• Cname to multi-level heroku subdomain

  - by user123424234

  I'm trying to create a cname that points from my custom domain (s.mydomain.com) to a multilevel subdomain hosted on heroku (me.myapp.herokuapp.com). I've created the Cname s.mydomain.com with the value me.myapp.herokuapp.com. When I go to s.mydomain.com it does not route to me.myapp.herokuapp.com, instead I get: method=GET path=/ host=s.mydomain.com dyno=web.1 queue=0 wait=0ms connect=4ms service=18ms status=404 It's possible I'm not fully understanding how this Cname should be setup. My desired outcome is for s.mydomain.com to act as if it were at me.myapp.herokuapp.com.

  Read the article

• Using off-the-shelf hardware for brand-name servers; Possible? Good idea?

  - by threecheeseopera

  Is it possible or advisable to use 'regular' not-sanctioned-by-the-server-manufacturer hardware in high end servers? Often these manufacturer-supplied parts have a very high price markup, and I wonder if it's always necessary (understanding that they probably apply more rigorous requirements to this hardware). For example, Dell sells 300GB 15,000rpm serial-attached scsi drives for a certain server family for almost $600 each, while newegg sells a drive with the same specs for almost half the price http://www.newegg.com/Product/Product.aspx?Item=N82E16822116059. Do we really need to pay these high markups, especially for disks that are likely RAID-ed and so guarded against catastrophic failure?

  Read the article

• RewriteRule applying pattern even though 1 of the RewriteCond's failed

  - by BHare

  #www. domain . tld RewriteCond %{HTTP_HOST} (?:.*\.)?([^.]+)\.(?:[^.]+)$ RewriteCond /home/%1/ -d RewriteRule ^(.+) %{HTTP_HOST}$1 RewriteRule (?:.*\.)?([^.]+)\.(?:[^.]+)/media/(.*)$ /home/$1/client/media/$2 [L] RewriteRule (?:.*\.)?([^.]+)\.(?:[^.]+)/(.*)$ /home/$1/www/$2 [L] Here is rewritelog output: #(4) RewriteCond: input='tfnoo.mydomain.org' pattern='(?:.*\.)?([^.]+)\.(?:[^.]+)$' [NC] => matched #(4) RewriteCond: input='/home/mydomain/' pattern='-d' => not-matched #(3) applying pattern '(?:.*\.)?([^.]+)\.(?:[^.]+)/media/(.*)$' to uri 'http://www.mydomain.org/files/images/logo.png' #(3) applying pattern '(?:.*\.)?([^.]+)\.(?:[^.]+)/(.*)$' to uri 'http://www.mydomain.org/files/images/logo.png' #(2) rewrite 'http://www.mydomain.org/files/images/logo.png' -> '/home/mydomain/www/logo.png' If you note on the 2nd 4 it failed the -d (if directory exists) pattern. Which is correct. mydomain does not have a /home/. Therefore it should never rewrite, atleast according to my understanding that all rewriterules are subject to rewriteconds as logical ANDs.

  Read the article

• How to revert to "last known good configuration"

  - by Ripley

  Hi Guys. I failed to install ubuntu 10.04 with WUBI, for some reason it's showing me the root partion is not defined. I'm bored to fight with it so I just removed ubuntu in windows. However this installation made my original Windows XP cripple, a normal boot will end up with a blue screen, error code 7E, I'm still able to boot with the 'last known good configuration' tho. My understanding is booting like this will recover things and I'm supposed to be good when reboot, while this is not the case for me, I have to choose the 'boot from last known good configuration' each and every time to work around the blue screen. Could you suggest how could I resolve this? I feel it's foolish having to waste 10 more seconds each time starting the OS.

  Read the article

• Does Wake-on-LAN from power state S5 require any OS configuration?

  - by TARehman

  I am configuring a HTPC which I would like to be able to power on using Wake-on-LAN, from the S5 state (full shutdown, still plugged in). The system is running Linux Mint 14 Cinnamon. I'm getting some conflicting information in my searching on the Net. I am not concerned with using WoL to change the state from standby or hibernate to on. Because of the current interface to our TV, the system must be either turned on or turned off. So, basically, this system will cycle from S0 to S5, and from S5 back to S0, and so on. Some tutorials suggest that I need to use ethtool to configure things after enabling WoL in my BIOS, but my understanding is that doing an S5 - S0 power on only requires the BIOS to be configured (since when the computer is in state S5, the OS hasn't even been loaded anyway). Can I use WoL with only the BIOS configured to go from state S5 to S0, or will I need to configure the OS as well?

  Read the article

• Graphics Card Compatability

  - by Aaron

  I am a first time builder and while I have the basic understanding of how to put a computer together, one final thing eludes me. What are the requirements for instaling 2 or more graphics cards on a computer? Example: EVGA 015-P3-1589-AR GeForce GTX 580 (Fermi) FTW Hydro Copper 2 1536MB 384-bit GDDR5 PCI Express 2.0 x16 HDCP Ready SLI Support Video Card ECS NGTX580-1536PI-F GeForce GTX 580 (Fermi) 1536MB 384-bit GDDR5 PCI Express 2.0 x16 HDCP Ready SLI Support Video Card I am not planning on buying either of these cards in the near future. I simply am using them as an example because of the number of differences. As I understand it these two cards will work together (given the proper motherboard) because the only thing that matters is that they are both GeForce GTX 580. Is my assumption correct? If not, why?

  Read the article

• How does Windows handle Time? Updating RTC, etc. (Active Directory and Novell E-Directory)

  - by bshacklett

  I'm troubleshooting some time issues in my domain and before making any big changes I want to have a thorough understanding of what's going on. I've got a few lingering questions at the moment: What sources (rtc, ntp, etc.) are queried by Windows to keep time? How does this differ in a mixed Active Directory / Novell environment? What is the order that each source is queried in? How does Windows decide whether to act as an NTP client, peer or server? In what situations will Windows update the RTC, if ever?

  Read the article

• How do I make a privileged port non-privileged in Redhat 5?

  - by Jason Thompson

  So I have a RedHat 5 box that I'm wanting to run an application that I wrote that implements SLP. SLP uses port 427 for answering service queries. My understanding is that ports below 1024 are "privileged" and thus cannot be bound to by anyone that's not root. I cannot run this application as root as it is launched via tomcat. One creative solution I really like was simply writing an iptables rule to route the privileged port to a non-privileged. In my proof of concept tests, this works wonderfully. Unfortunately, it would be greatly (and understandably) desired by the powers if my application did not require screwing around with iptables upon installation. So I heard a rumor and cannot find anything to verify this that there was some sort of command or parameter that could be set to make any port I want be non-privileged. Is this true? If so, how is this done? Thanks!

  Read the article

• Logical and Physical network topologies

  - by t.thielemans

  I'm trying to understand the difference between logical and physical topologies but it's a bit confusing to me. Cisco states these as logical topologies, but from my understanding these should be physical topologies? This is what I understand so far: Physical PtP: desktop directly connected to a desktop Multiaccess: several desktops connected to a medium with access to each other (Cisco Ring image, how should I view this in a live situation?) Ring: several desktops directly connected to each other creating a loop? Logical PtP: two desktops (virtually) connected to each other with intermediairy devices in between MultiAccess: (don't have a clue) Ring: (don't have a clue) Could anyone help me out and perhaps explain the difference a bit more detailed? Online I can't find any useful topics. I am using the Cisco Network Fundamentals book.

  Read the article

• Connecting server to more than one switch.

  - by Jake

  I have 3 switches, one NEATGEAR GS748T and two JGS524. Initially I wanted to connect them in a triangle loop, but later suspect that the JG524 does not have spanning tree support. Now I have a Dell R710 with 2 NIC at the back. If I connect the server in between the two JGS524, which both in turn connect to the GS748T, will that consitute a loop? According to my limited understanding, with 2 NICs there will be 2 IPs for the server. Will the file server even work or not? Theoretically speaking, will this configuration increase the access speeds for clients? Thanks.

  Read the article

• What are the essential considerations for setting up systems in a location with unreliable power?

  - by dunxd

  I deal with a lot of remote offices located in parts of the world where the local grid power supply is unreliable. Power can go off anytime with no warning, with outages ranging from minutes to days Power fluctuation is wild, with spikes and brown outs Currently the offices will have some or all of the following: A generator, with an inverter, or some sort of manual switch A big UPS or battery array connecting a number of devices Several smaller APC UPS with computers attached Low cost Voltage Regulators sometimes connected between mains and UPS or device. I know that each of these things needs to be appropriately rated for the equipment to which it is connected (although I am not sure how to calculate the correct rating). The offices will generally have the following equipment (in varying quantities): some sort of internet connection device (VSAT router, ADSL modem, WiMax router) Cisco ASA 5505 firewall a bunch of PCs printers one server I don't seek to replace the advice of an electrician, but in some of these locations they only answer the questions you ask them, so I need to make sure I have enough understanding of the essentials to protect equipment from damage, and possibly get through some power cuts.

  Read the article

• Burn Image context menu item missing in Windows 7

  - by Tim Jarvis

  My understanding is that in Windows 7 if I right click an ISO image I should have an option Burn Image, or if I double click an ISO I should get a dialog to let me burn the image.... Not happening for me, any idea's why? Edit: 29th April. I do have isoburn.exe in my system32 directory, and it works just fine if I launch it manually from cmd. However I simply do not have the context menu when I right click on a iso file. So my more specific question is, does anyone know how to simply restore this context menu item, an entry in the registry perhaps? (but where and what)

  Read the article

• Lighttpd mod_rewrite conversion from .htaccess format

  - by hoball

  Hello, I am using lighttpd as webserver and is having an issue about mod_rewrite. Currently I have a set of Apache .htaccess rewrite rules from a PHP script: RewriteEngine On RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteCond %{REQUEST_FILENAME} !-l RewriteRule ^(.*)$ index.php [QSA,L] In my understanding, if the requested URI is not a file/directory/sym-link, append it to index.php eg. www.a.com/hello/world --> www.a.com/index.php/hello/world I attempted to convert to lighttpd specification: url.rewrite-if-not-file = ( "^(.*)$" = "index.php/$1" ) However, it doesn't work. I suspect that is due to misuse of $1. I tried to use $0/%0 or something else but they fail. Would you please provide me a hint on making the syntax work? Thank you!

  Read the article

• How to schedule a biweekly cronjob?

  - by Roman

  crontab(5) defines the following fields: field allowed values ----- -------------- minute 0-59 hour 0-23 day of month 1-31 month 1-12 (or names, see below) day of week 0-7 (0 or 7 is Sun, or use names) and explains: Step values can be used in conjunction with ranges. Following a range with ``/<number>'' specifies skips of the number's value through the range. For example, ``0-23/2'' can be used in the hours field to specify command execution every other hour (the alternative in the V7 standard is ``0,2,4,6,8,10,12,14,16,18,20,22''). So, no biweekly Jobs, as far as my understanding goes. I'm quite sure there are workarounds, what are yours? Or did I miss something?

  Read the article

• Queue'ing cron jobs up to 10 times

  - by webnoob

  Hi All, This kind of touches on another post I made but is different so I have posted it as a new question. I have a script that runs that may take just over 1 minute to process, and my cron is set to run every minute. I can stop another cron job executing the script if the first one hasn't finished by using flock (php) in the file, however, this means that I would lose one iteration of the routine and have to wait nearly a minute before it is triggered again (as my understanding leads me to believe). What I would like to do is if the script is locked, not bomb out, but wait. Over time however, this could get quite high so I would also like to limit the amount of queued cron's to 10. I am a real newbie with Linux (had a Linux VPS for 3 days now) so I am not sure if my solution is even practical. Thanks.

  Read the article

< Previous Page | 72 73 74 75 76 77 78 79 80 81 82 83  | Next Page >