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  • How to protect folder privacy against unethical network administrators? [closed]

    - by Trevor Trovalds
    I just need a technical solution for the sake of my group's shared passwords, projects, works, etc. safety. Our network has Active Directory with public/groups/users and NTFS permissions, under a Windows Server 2003 which will soon migrate to Windows Server 2008 R2. Our IT crowd is small, consisting of 2 DBAs, 4 designers, 6 developers (including me), 2 netadmins and (a lot of) tech supporters, everyone has local admin rights. Those 2 network admins weren't the ones who set the network up, they just took the lift recently when the previous ones quit. We usually find them laughing at private contents from users stored in the groups AD, sabotaging documents that don't match their personal tastes and, finally, this week we found out they stole a project we (developers and DBAs) were finishing and, long before, they presented it to the CEO as theirs without us knowing. I'm a systems analyst, and initially my group decided to store critical content, like shared passwords, inside encrypted .zip files. Unfortunately we couldn't do the same to the other hundreds of folders and files, which included the stolen project, because the zipping process would take too long for every update. We also tried an encrypted Subversion repository under SSL, but there are many dummies (~38 atm) involved in the projects that have trouble using TortoiseSVN when contributing, and very oftenly we had to fix messed up updates. Well, I think these two give the idea of what we've been trying to reach. So, is there a practical "individual" protection for our extensive data or my hope can already be euthanized? P.S.: Seriously, at the place where I live/work, political corruption gone the wildest, so denounce related options are likely impracticable. Yet both netadmins have strong "political bond" with the CEO and the President, hence their lousy behavior and our failed delation attempts.

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  • What causes this sonar sound on OS X?

    - by Richard Metzler
    Both of my Macs play this sonar sound that sounds like "ping ping ping ping" with a small amount of delay / echo. It occurs to me that it is played once a day but I'm not sure why. I checked iCal but didn't found anything (I don't use iCal anyways but maybe it's connected to Google calendar or my iPhone). I've heard this sound played by both my MacBook and my iMac but not yet simultaneously. Update This sound is not submarine.aiff. It sounds much more like what skub linked to but there are 4 "pings" instead of 1. It is played at different times (today around 5pm and again at 8.45, but as far as remember not everyday). That's why I'm not sure I could record it, but I could try. The sound might come from my iPhone, though I'm not sure which apps are alowed to play sound when they are not running. Also I don't see any indication in the message center or something similar. I think I have to start taking notes on which apps running.

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  • Best way to restrict access to a folder in Dropbox

    - by Joe S
    I currently run a business with around 10 staff members and we currently use Dropbox Pro 100GB to share all of our files. It works very well and is inexpensive, however, I am taking on a number of new staff and would like to move the more sensitive documents into their own, protected folder. Currently, we all share one Dropbox account, I am aware that Dropbox for teams supports this, but it is far too expensive for us as a small company. I have researched a number of solutions: 1) Set up a new standard Dropbox account just for use by management, which will contain all of the sensitive documents, and join the shared folder of the rest of my team to access the rest of the documents. As i understand it, this is not possible with a free account, as any dropbox shared folder added to your account will use up your quota 2) Set up some sort of TrueCrypt container, and install TrueCrypt on each trusted staff member's machine, and store the documents inside that. Would this be difficult to use? I'd imagine the sync-ing would not work so well as the disk would technically be mounted at the time of use and any changes would be a change to the actual container rather than individual files. I was just wondering if anyone knows a way to do this without the drawbacks outlined above? Thanks!

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  • thought about shared storage (NFS, Lustre) [closed]

    - by user134880
    Possible Duplicate: Can you help me with my capacity planning? Now I habe small cluster with total of 8 nodes. 6 of them are computing nodes (apache and vmware) and 2 nodes are for storage. 2 storage nodes are identical. Each storage server is linux box with 8 x 1Tb WD RE4 in soft raid 10. 1st box is master and 2nd is slave. Data is mirrored with DRDB. We export NFSv4 shares to Apache (for document root) and iSCSI to Vmware. Now all is working pretty good and stable. But it will be soon time to upgrade our system. I have been thinking of Lustre. Does some one has any real experience with Lustre or NFS medium clusters? Will it be good idea just to upgrade server and change hdd's to 3Tb ? With NFS we will always have only 2 servers to maintain (one primary and one slave). Thanks. QUESTIONS: 1) Does some one used Lustre? In production? I have seen a lot of info about how it is hard to setup Lustre because you need to compile own kernel and patches. It's answers from newbies. Is there some one who has used Lustre for some period of time? 2) About disk upgrades - it's only description of strategy. I'm not asking if it is enough 3Tb or not. I just ask if it is right just to replace hdds instead of adding new server (like with Lustre) Thanks again.

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  • LMDE detects a wireless card, but can't use it

    - by Davidos
    LMDE can see my wireless card, and correctly identifies it, but it refuses to let me turn it on through the shiny graphical interface. Is there a way to use the non-shiny terminal to turn on my wireless? One small tidbit I noticed was the stated version; it says the version is 00. I believe that's hexadecimal for 0, which may indicate something screwy with the software. It would be nice if someone could tell me how to figure out how to solve this kind of problem in the future. *-network DISABLED description: Wireless interface product: Centrino Wireless-N 1000 vendor: Intel Corporation physical id: 0 bus info: pci@0000:09:00.0 logical name: wlan0 version: 00 serial: 91:e3:7b:0d:a3:a9 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlagn driverversion=3.0.0-1-amd64 firmware=39.31.5.1 build 35138 latency=0 link=no multicast=yes wireless=IEEE 802.11bgn resources: irq:43 memory:e1d00000-e1d01fff I've tested multiple other network managers, and none of them work. W ireless switch is on, I'm sure it's a driver problem.

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  • How to change font size on display

    - by Tim
    My laptop is Lenovo T400, whose screen size is 14.1 inches and default resolution is 1440 x 900. My main OS is Ubuntu 10.10. The default font size on the display is somehow small, which might contribute to the fatigue of my eyes. My previous laptop is Acer 5000, whose screen size is 15.4 inches and the default resolution is 1024 x 768. I like reading on my old laptop better than on my new one. Is it possible to change the setting of my new one to look like reading my old one? What are the parameters that control the font size? Are screen size, resolution part of them? In Windows, there are choices for font size, while in Ubuntu I haven't find out where I can change the setting and would like know if someone here knows about it. I also wonder if I can use a separate bigger display (perhaps just like a desktop display) as the display of my laptop, in case I don't want to enlarge font size at the cost of sacrificing the amount of the content to display, and how I shall do it? Thanks and regards!

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  • Is it possible to add a WiFi HotSpot to an already established LAN, keep the two separate, and not modify the primary router?

    - by user12844
    I have a set up where my Cisco ASA is sitting in one facility, providing access to the Internet for two buildings. The two buildings are geographically separated by a Wireless Bridge spanning about 10 miles. All computers and equipment inside the LAN are on the same subnet (its pretty small) and we have WiFi AP's in both locations providing Wired and Wireless access to the LAN. Given all the BYOD (Ipods, and SmartPhones etc...) coming into the office as well as Visiting reps etc... we would like to also provide a non-secure, device independent (the devices cannot see or communicate with each other), and LAN independent (the devices cannot see or use anything on the LAN) HotSpot that anyone could use for their Devices that gives them access to the Internet ONLY without needing a password. I get that this could be possible at the facility with my Cisco if I messed with it and created VLANs etc... but then I would need to get it across my Bridge as well and don't think that would be possible without serious reconfiguration of everything. Would really like some kind of magic drop in solution that can kind of piggy back on my LAN without really needing to do very many if any changes to the current set up.

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  • Reading log files from web application

    - by Egorinsk
    Hi! I want to write a small PHP application for monitoring logs on a Debian server, including syslog logs and Apache/PHP messages. The problem here is that Apache user (www-data) has no access to /var/log directory. What would be the best way to grant an access to logs for PHP application? Let's assume that log files can be really large, like hundreds of megabytes. I have some ideas: Write a shell script that would be run via sudo and tail last 512 Kb of log into a separate file that can be read by application - that's ineffective, because of forking a new process and having to read data twice Add www-data to adm group (that can read logs) - that's insecure Start a PHP process via cron every minute to read logs — that's not very good, because it doesn't allow real-time monitoring. Also, this script will be started even when I don't read logs, and consume CPU time (server is in the cloud, and I'll have to pay for it) Create a hardlink for all log files with lowered permissions - I guess, that won't work because logrotate could recreate log files and they'll change inode number. Start a separate nginx/Apache server under privileged user that may read logs. Maybe anyone got a better solution?

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  • How to fix Windows 7 device removal notification loop

    - by Barry Kelly
    Bit of an odd one this. One of our PCs is getting caught in a loop some time after being turned on, usually after a USB storage device has been attached - sometimes an iPod, sometimes a GPS. Specifically, Windows Explorer starts showing a drive icon and letter (E:, as of right now) for the System partition (the small hidden one at the start of the boot drive). Then, the icon disappears. Then it reappears again. And disappears. It does this very quickly, at what looks like maybe 50 times a second. CPU usage in this loop is also very high; averages about 66%. This machine has an i7 920 CPU, which is quad core with hyperthreading; so this usage rate works out to about 5 100% busy threads, along with whatever normal idle load is (particularly Task Manager itself). Inspecting with Process Explorer shows that the device removal notification infrastructure has gone berserk. The threads in system service processes (i.e. apart from Windows Explorer) which are using all the CPU power relate to device notification. The Disk Management MMC snap-in also fails to run when the loop starts. The only way to break the loop, it seems, is to reboot the machine. Anyone seen anything similar to this, and know of a way to fix it? Machine details: Windows 7 x64, fully patched i7 920, 12GB RAM Intel SSD 80GB (X25-M, I believe; not G2) 2TB 5.2K disk for bulk storage AMD HD 5870 Further hardware details await. I'm going to go through and update all drivers I can find.

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  • Server taking too long to respond error

    - by DCJones
    Hi, This is my first post on serverFault and my first entry in to web server configuration. The hardware and software. CPU: GenuineIntel, Intel(R) Core(TM)2 Duo CPU E7500 @ 2.93GHz OS: Linux 2.6.18-128.el5 Memory: 2Gb Background. I am running a small database (MySQL), around 1000 records with each record containing 44 fields. At the start of each day “00:01” the tables are cleared and populated with fresh data. The are 10 remote PCs all running Winodws XP and Firefox internet browser. All remote PC’s are connected to the internet using a min 4Gb broadband connection. Each remote PC runs a URL which displays a dynamic page of data which is refreshed every 20 seconds. This is a continual process 24 hours a day. I problem I am having is on odd occasions throughout the day the PC browser error with “Server taking too long to respond error”. What I am trying to find our is if I have the correct setting in the httpd.conf file on the server. Any help or advice anyone can provide would be very helpful. Best regards Dereck Server config file: httpd.conf ServerRoot "/etc/httpd" PidFile run/httpd.pid Timeout 120 KeepAlive On MaxKeepAliveRequests 200 KeepAliveTimeout 5 StartServers 8 MinSpareServers 5 MaxSpareServers 20 ServerLimit 256 MaxClients 254 MaxRequestsPerChild 4000 StartServers 2 MaxClients 150 MinSpareThreads 25 MaxSpareThreads 150 ThreadsPerChild 25 MaxRequestsPerChild 0

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  • PHP Web Server Solution (Apache/IIS)

    - by njk
    I apologize if this is too broad or belongs on Super User (please vote to move if it does). I'm in the process of creating requirements for an internal PHP web server to submit to our architecture team and would like to get some insight whether to use a Windows or *nix platform and what applications would be required. The server will host a small PHP application that will be connecting to SQL Server. The application will need to send mail. We would also like to incorporate a FTP server to allow files to be dropped in. From what I've read regarding a Windows platform using IIS, it seems as though IIS would only be advantageous if using a .NET or ASP application. Does IIS have mail functionality? Or how is mail traditionally configured (esp. on *nix)? Also, does IIS have directory configuration functionality like Apache does with .htaccess? For a Windows based solution; IIS (comes with FTP) Apache (has mod_ftp module) For a *nix based solution; Apache

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  • Booting Windows from different partition than system

    - by szamil
    I have bought an SSD disk, but my laptop (Dell Precision M6300) refuse to use it as a target disk for windows (AHCPI on/off, BIOS up-to-date). I can't exchange the disk unfortunately... But fortunately, I've managed to install windows using USB disk case. The problem is, that when I put that disk as my internal drive it can't boot. (Disk read error, Three Finger Salute ... ) So I tried with Linux (openSUSE), I manage to install it as well, but when I tried to boot GRUB from internal drive I get errors again. (Should I try GRUB2?) I figured out that I can boot into that internal hard drive's openSUSE system using small USB drive with GRUB, kernel and image on it. So, I just run GRUB from USB drive, it loads necessary stuff from the USB drive and then continues from the internal drive. I want to do the same with Windows. But GRUB (rootnoverify and chainloader +1) does not boot my windows on internal drive. The question: is there any chance to copy the critical windows' boot files into the USB drive, to make it possible to boot from that USB drive, but continue booting from internal (different in general) drive? The USB drive would became a system hardware key! ;-) Disk: Plextor M5S 128GB Sata III, laptop has Sata II, but it's compatible anyway, right?

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  • Wires from fan on side panel - where do they connect?

    - by Mick
    The side panel of my desktop PC has a small fan built in. There were two wires, one red one black that connected inside the PC. Unfortunately I had the bolts removed and the side door fell off ripping the cables such that the main length of cable remains attached to the fan. So there must be two short stubs of broken cable somewhere - but I can't find them! Any ideas where I should look? I can't see anything on the motherboard. the PC is running perfectly well - but I now have the side open to make sure the air can circulate. EDIT: The motherboard appears to be an "Asus P6T SE" EDIT: The manual shows the location of two "chassis fan" connectors. One is being used by a big chassis fan on the back face of the PC (underneath the pwer supply). The other appears to be unused - there is no stub of a connector with wires - its just the bare pins sticking directly out of the motherboard. There is also an unused "pwr_fan" connector. Would it be ok to simply connect the black and red wires from the fan to the black and red parts of a molex adapter?

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  • Confused with creating an ODBC connection, apparently I have two separate odbcad32.exe files?

    - by Hoser
    Alright, this is my first time working with this so forgive me if I'm a little confusing or vague. I have a server with Windows Server 2008 Standard without Hyper-v (6.0, Build 6002). I'm running a small website off this server and using a Microsoft Access database to store some information coming in through the website. I'm sure the PHP I have written to open the ODBC connection is correct as it has worked for me when I created this website in a testing environment on a laptop. My current issue now is that it seems like I have two different odbcad32.exe's, and one doesn't appear to have a driver for a .accdb file, and only a .mdb file. The other has a driver for both. The first one I speak of has a driver titled 'Driver do Microsoft Access (.mdb)', the second one has a driver titled 'Microsoft Access Driver (.mdb, .accdb)'. I access the first odbcad32.exe by going to C:\Windows\SysWOW64\odbcad32.exe, and then the one that seems to have the driver I need I go to Control Panel-Administrative Tools-Data Sources(ODBC) and simply create a new connection in the System DNS tab. Whenever I make changes to the one that I access through the Control Panel, I see no changes, however if I use the odbcad32.exe file in SysWOW64 I do get some changes in the errors that come back to me. The main difference I noticed is that when I set up an ODBC connection with the Control Panel method it said it simply couldn't find the ODBC connection, but when I made a .mdb connection in the SysWOW64 one (and pointed it to a .accdb file) it says Cannot open database '(unknown)'. It may not be a database that your application recognizes, or the file may be corrupt. Which makes it seem like it is this odbcad32.exe version in SySWOW64 that is being recognized as the 'correct' one. Is there any way to fix this? I've tried to be as thorough as possible but if I've been confusing or left anything out let me know.

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  • Fedora Core 6 Migration

    - by Matthew Sprankle
    I am at a loss as to what I should to for this server. I need it to run php5.3 and corresponding version of mysql. I received a client today through work that is using Fedora core 6 running 10 very small websites on some very hodge podge setup. My original idea was just upgrade to php5.3. I have yum (installed 3.0.8) reconfigured for the fedora archive. The latest version of php it allows is 5.1.8. I am still relatively new to server setups and am nervous about wiping their server to upgrade it. Since it is about 6-8 years old I'm not sure if it will even support the newest version of fedora. The server specs are: Parallels Plesk Panel version 9.5.4 Operating system Linux 2.6.9-023stab048.4-smp CPU GenuineIntel, Intel(R) Xeon(R)CPU E5335 @ 2.00GHz (10gb disk space and 1gb of memory). I use fedora for my personal server so I was a little familiar with it. I haven't done anything too extravagant. Is there a way I can escape this nightmare with installing php5.3 or do I need to migrate these sites to a new server?

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  • Multiple Screen - Keyboard Sharing

    - by nhbdesign
    I run a small architectural firm with several drafters employed, I'm currently setting up a new office space and one of the things on top of my list is a figuring out a way to keep tabs on my drafters work and being able to collaborate in real time. Here's the challenge, they sit in a separate large cubicle room and I'm on the other end of the hallway, the way it is now; every time they’ve got some question on how to proceed on a certain design, they would come all the way to my office, I'd open their file (in read only) give some ideas, save-as new file, they go back copy paste... in short, nonsense. What I've been thinking of is to setup a hardwired solution that should enable me to have an extra monitor on my desktop which is hardwired (through KVM or something) to each of my employees workstations serving as a secondary display, so that I can watch live what they do, interact with them just as if they would have an extra keyboard and monitor in my office, except; I don’t want to have on my desk a separate monitor for each employee.. so I'd want them to be tiled on a single large screen, watching all screens alive, and whenever they ask me (or I just decide..) to step in, I just click on any tile and hurray, I'm in, editing and saving in real time on their workstation. I also want to reserve the option when I want to, to just use that monitor as just an extra screen for my workstation. Is something like that possible in 2013? P.S. I know of TeamViewer and similar internet/software based stuff, but I'm specifically looking for something solid hardwired and maintenance free, and also something that would allow to watch without my employees getting notified every time I do so (I’m not a tough boss though...).

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  • Understanding Netbook Partitions & UNR Installation

    - by Wesley
    Hi all, I have a Samsung N120 netbook (with upgraded 2GB RAM). I'm just looking at the Disk Management right now (in Windows XP) and I'm trying to understand what partition holds what. There is "Local Disk (C:)" which is 40GB, "RECOVERY" (no drive letter) which is 6GB and then "TEMP_PART01 (D:)" which is 103.05GB. XP is installed on Local Disk (C:) and I've only used this hard drive for all my files, etc. Recovery is recovery... probably not removable anyways. Now, what bugs me is the TEMP_PART01 (D:) partition, which contains quite a bit of random junk, such as EULA text documents, an "external installer", UI Wrapper Resource DLLs, a "VC_RED" Windows Installer Package and a few more files. I have no clue what any of it means, but I'm assuming that this was probably stuff that could have been on the Local Disk (C:), along with the WINDOWS, Program Files, and Docs and Settings folder. So, how should I go about this? Should I have kept all my data on D: and left all OS related files/folders on C:? Now, I want to install Ubuntu Netbook Remix. Question is, will this install within Windows, if I want to dual boot it? If not, would I partition D: into two small chunks, one on which I would install UNR? There are basically two questions in here, but it'd be great to get answers for both! Thanks in advance.

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  • Locate devices within a building

    - by ams0
    The situation: Our company is spread between two floors in a building. Every employee has a laptop (macbook Air or MacbookPro) and an iPhone. We have static DHCP mappings and DNS resolution so every mobile gets a name like employeeiphone.example.com, every macbook air gets a employeelaptop.example.com and every macbook pro gets a employeelaptop.example.com on the Ethernet interface (the wifi gets a dynamic IP from a small range dedicated for the purpose). We know each and every MAC address of phones and laptops, since we do DHCP static mapping (ISC DHCP server runs on linux). At each floor we have a Netgear stack of two switches, connected via 10GB fiber to each other. No VLANs so far. At every floor there are 4 Airport Extreme making a single SSID network with WPA2 authentication. The request: Our CTO wants to know who is present at which floor. My solution (so far): Every switch contains an table listing MAC address and originating port. On each switch stack, all the MAC addresses coming from the other floor are listed as coming on port 48 (the fiber link). So I came up with: 1) Get the table from each switch via SNMP 2) Filter out the ones associated with port 48 3) Grep dhcpd.conf, removing all entries not *laptop and not *iphone 4) Match the two lists for each switch, output in JSON or XML 5) present the results on a dashboard for all to see I wrote it in bash with a lot of awk and sed, it kinda works but I always have for some reason stale entries in the switch lookup tables, making it unreliable; some people may have put their laptop to sleep, their iphones drop connections after a while, if not woken up and so on..I searched left and right, we are prepared to spend a little on the project too (RFIDs?), does anybody do something similar? I can provide with the script if needed (although it's really specific to our switches and naming scheme). Thanks! p.s. perhaps is this a question for stackoverflow? please move if it so.

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  • Concatenating gziped Apache logs

    - by markdrayton
    We rotate and compress our Apache logs each day but it's become apparent that this isn't frequently enough. An uncompressed log is about 6G, which is getting close to filling our log partition (yep, we'll make it bigger in the future!) as well as taking a lot of time and CPU to compress each day. We have to produce a gziped log for each day for our stats processing. Obviously we could move our logs to a partition with more space but I also want to spread the compression overhead throughout the day. Using Apache's rotatelogs we can rotate and compress the log more often -- hourly, say -- but how can I concatenate all the hourly compressed logs into a running compressed log for the day, without decompressing the previous logs? I don't want to uncompress 24 hours' worth of data and recompress it because that has all the disadvantages of our current solution. Gzip doesn't seem to offer any append or concatenate option but perhaps I've missed something obvious. This question suggests straight shell concatenation "works" in that the archive can be decompressed but that gzip -l doesn't work seems a bit dodgy. Alternatively, perhaps this is still a bad way to do things. Other suggestions are welcome -- our only constraints are our relatively small log partitions and the need to provide a daily compressed log.

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  • How many connections are allowed to a Windows 7 Home Premium shared folder or printer?

    - by lcbrevard
    I have a client who runs a small business with 4 desktop systems, two of which are inexpensive [ The XP Pro system is currently being used as a file "server" for time sheets and QuickBooks data. It also shares an HP ink jet printer. The client wishes to decommission this system because (1) it's ugly [it is] and (2) it uses too much power [it does]. If we share a folder on one of the Windows 7 Home Premium systems will there be a problem connecting to it with up to 3 other computers? What about the printer sharing? I vaguely remember seeing that Windows 7 is less usable for "server" purposes and has severe restrictions on the number of clients. But I cannot seem to find those numbers. In my own network (over 12 systems) we have no problem sharing from Windows 7 Ultimate to a few other systems where needed. I am embarrassed that I cannot seem to find the answer to this in a couple of days of searching. I can do an anytime upgrade of one of these systems to Pro if that would improve the ability to share from it. I am not able to convince the client to put a "real server" into their network.

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  • How many connections are allowed to a Windows 7 Home Premium shared folder or printer?

    - by lcbrevard
    I have a client who runs a small business with 4 desktop systems, two of which are inexpensive [ The XP Pro system is currently being used as a file "server" for time sheets and QuickBooks data. It also shares an HP ink jet printer. The client wishes to decommission this system because (1) it's ugly [it is] and (2) it uses too much power [it does]. If we share a folder on one of the Windows 7 Home Premium systems will there be a problem connecting to it with up to 3 other computers? What about the printer sharing? I vaguely remember seeing that Windows 7 is less usable for "server" purposes and has severe restrictions on the number of clients. But I cannot seem to find those numbers. In my own network (over 12 systems) we have no problem sharing from Windows 7 Ultimate to a few other systems where needed. I am embarrassed that I cannot seem to find the answer to this in a couple of days of searching. I can do an anytime upgrade of one of these systems to Pro if that would improve the ability to share from it. I am not able to convince the client to put a "real server" into their network.

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  • How to make my Ubuntu an internet gateway for my Android phone

    - by yacine
    I want to use the internet of my school on my Android, the problem is they have a Squid proxy, and many applications on my phone don't use the proxy at all. The obvious solution is to install a transparent proxy on my Android to force all applications to connect through it. The problem is that I need to root the phone to make it work, and I don't want to do it because it's not really my phone and rooting is a little risky- Another solution, which is safer, is to make my computer run as a gateway, so I put my Ubuntu IP in the gateway parameter of the phone. I'm running a small proxy on my ubuntu (cntlm), so I redirect the Android traffic to it. I did it with "iptables" as follows: iptables -t nat -A PREROUTING -s 10.0.1.118 -p tcp -j REDIRECT --to-ports 8888 iptables -t nat -A PREROUTING -s 10.0.1.118 -p udp -j REDIRECT --to-ports 8888 10.0.1.118 is the IP of the phone, 8888 is the port of cntlm (proxy on my PC). Now, on the phone: When I enter www.google.com on the navigator I get nothing (web site not found, error message of Firefox). But, when I enter http://74.125.143.101 (IP of Google) I get an error message from the school proxy (so it worked in some way – my PC redirected the traffic of the phone to the Squid proxy). The error message is : The requested URL could not be retrieved while trying to process the request get / http/1.1 host 74.125.143.101 user-Agent ... ... I think the problem is in the "GET" header,it should be GET 74.125.143.101 HTTP/1.1. But I don't understand what's happening, and I'm a certified CCNA.

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  • Does Mac OS X throttle the RATE of socket creation?

    - by pbhogan
    This may seem programming related, but this is an OS question. I'm writing a small high performance daemon that takes thousands of connections per second. It's working fine on Linux (specifically Ubuntu 9.10 on EC2). On Mac OS X if I throw a few thousand connections at it (roughly about 16350) in a benchmark that simply opens a connection, does it's thing and closes the connection, then the benchmark program hangs for several seconds waiting for a socket to become available before continuing (or timing out in the process). I used both Apache Bench as well as Siege (to make sure it wasn't the benchmark application). So why/how is Mac OS X limiting the RATE at which sockets can be used, and can I stop it from doing this? Or is there something else going on? I know there is a file descriptor limit, but I'm not hitting that. There is no error on accepting a socket, it's simply hangs for a while after the first (roughly) 16000, waiting -- I assume -- for the OS to release a socket. This shouldn't happen since all prior the sockets are closed at that point. They're supposed to come available at the rate they're closed, and do on Ubuntu, but there seems to be some kind of multi (5-10?) second delay on Mac OS X. I tried tweaking with ulimit every-which-way. Nada.

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  • Does Mac OS X throttle the RATE of socket creation?

    - by pbhogan
    This may seem programming related, but this is an OS question. I'm writing a small high performance daemon that takes thousands of connections per second. It's working fine on Linux (specifically Ubuntu 9.10 on EC2). On Mac OS X if I throw a few thousand connections at it (roughly about 16350) in a benchmark that simply opens a connection, does it's thing and closes the connection, then the benchmark program hangs for several seconds waiting for a socket to become available before continuing (or timing out in the process). I used both Apache Bench as well as Siege (to make sure it wasn't the benchmark application). So why/how is Mac OS X limiting the RATE at which sockets can be used, and can I stop it from doing this? Or is there something else going on? I know there is a file descriptor limit, but I'm not hitting that. There is no error on accepting a socket, it's simply hangs for a while after the first (roughly) 16000, waiting -- I assume -- for the OS to release a socket. This shouldn't happen since all prior the sockets are closed at that point. They're supposed to come available at the rate they're closed, and do on Ubuntu, but there seems to be some kind of multi (5-10?) second delay on Mac OS X. I tried tweaking with ulimit every-which-way. Nada.

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  • How to prevent response to who-has requests on virtual eth interface?

    - by user42881
    Hi, we use small embedded X86 linux servers equipped with a single physical ethernet port as a gateway for an IP video surveillance application. Each downstream IP cam is mapped to a separate virtual IP address like this: real eth0 IP address= 192.168.1.1, camera 1 (eth0:1) =192.168.1.61, camera 2 (eth0:2) =192.168.1.62, etc. etc. all on the same eth0 physical port. This approach works well, except that a specific third-party windows video recording application running on a separate PC on the same LAN, automatically pings the virtual IPs looking for unique who-has responses on system startup and, when it gets back the same eth0 MAC address for each virtual interface, freaks out and won't allow us to subsequently manually enter those addresses. The windows app doesn't mind, tho, if it receives no answer to the who-has ping. My question - how can we either (a) shut off the who-has responses just for the virtual eth0:x interfaces while keeping them for the primary physical eth0 port, or, in the alternative, spoof a valid but different MAC address for each virtual interface? Thanks!

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