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  • Windows 7 remote desktop encryption error every few minutes

    - by rfrankel
    Because of an error in data encryption, this session will now end. This is the error I've been getting more and more frequently over the past few days, to the point that I can't ignore it because it's happening consistently within 5 minutes of connecting - sometimes within a few seconds. Both the remote and local machines are Windows 7 Pro x64. The remote machine is behind a Linksys RV082, and I'm using UPnP to forward a remote port to the correct local port. This setup had been working fine for several months, and I can't think of any recent relevant changes that might have been made. Things I've already tried: Disabling unnecessary components of the network connection on the remote machine, until only IPv4 and Client for Microsoft Networks remain. Disabling TCP large send offload on both the remote and local machines. Confirming that the remote machine is not mentioned anywhere in any DMZ settings on the Linksys router. Confirming that there are no x509-related registry keys screwing things up (this is the suggested fix for a slightly different error anyway). These are the only solutions I've been able to find after about an hour of searching, and most of them apply to XP or Server 2003 in any case. If anyone could suggest something else, it would be much appreciated.

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  • How to test/debug bad network wiring?

    - by Jack Lloyd
    I recently bought a place already wired with Cat 5E (8 ports, leading to a central closet). However attempting to get link, nothing works. On closer examination, it was obvious that the ends in the closet were wired backwards (brown on pin 1, etc). The jacks that I've pulled out of the wall do look to be correctly done. However, testing with a network cable tester shows zero link between any of the jacks and any of the ports in the closet - I had expected to just see a 1/8, 2/7, ... 8/1 mismatch, but instead get nothing at all. The runs are accessible and look neat, though they take some bends that seem quite sharp and are in some cases much longer than they need to be (the person who put this in was a professional electrician but I suspect this was the first time he ran network cabling). My best guess at this point is that he either bought bad cable, or put so much tension on it that he snapped wires. Though it seems surprising/unlikely that I wouldn't get at least one active wire on one of the 8 lines. So, my question: is there anything else I should try or test before I go ripping out everything and running new cable?

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  • Internet Sharing on Lion breaks my routing table

    - by seaders
    When in the office, I'm connected to a 192.168.1.0/24 network. When Internet Sharing is off, when I run netstat -nr the first entry shows default 192.168.1.254 UGSc 10 62 en0 If I turn Internet sharing on, it shows default link#5 UCS 2 0 en1 This is obviously incorrect and breaks all connectivity of my machine. en1 is my wireless, whereas en0 is my ethernet. If I then disable Internet Sharing, it even deletes that incorrect route, so I'm left with no default route at all. Currently I have one script that I run when I share, or after, when I disable that does route delete default route add default 192.168.1.254 That fixes everything, but I'd love to know what's actually making this happen and how to properly fix it. And just to say that at some point a few months ago, this was working absolutely perfectly, with no hitches, then one day when I brought the laptop home, I couldn't disable the internet sharing, so I couldn't connect to my home wifi. I eventually had to restart the machine and since then this problem has been happening. Any help would be greatly appreciated, thank you.

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  • BIOS not detecting working SATA hard drive.

    - by Evan
    Some time ago my power supply died. It's a long story from then till now, but the important bit is that I ended up with a new hard drive and a new power supply. I tested to see if my original hard drive was still alive, and it booted and worked perfectly until I turned it off. When I started it again it would not boot. I bought new SATA cables, assuming that the one I had was not seating properly (it was cheap and wobbly), but no dice. Upon start-up I am presented with a message telling me to insert boot media into the selected drive or add a drive and restart. Neither the new or the old drive is detected by BIOS, my Vista install disk, or from my bootable Linux USB drive. When I remove all of the RAM the computer ceases outputting visual information, and upon reinstalling the ram and starting up again gives me a "failed overclock" error. So, does anyone have an idea as to what might be going on? I'm completely lost at this point.

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  • Is this "cache administrator" error my server's problem?

    - by Eoin
    Hey, I have a CentOS VPS running Apache with a phpBB installation. One specific user has received errors when posting a message or logging in to the forum. The following issue has arisen in parallel to installing nginx, which serves only the static files of my site. Not sure if this is only coincidence. Furthermore, my setup uses redirects (in some cases, double-redirects) to point the user to a different virtual folder. So, the forum is seen to be at /translation/ but the actual files are found in /phpbb/. I'm at a loss as to what may be the underlying issue. My server? The person's ISP? She has tested both at home and at work, with similar issues. While trying to process the request: GET /phpbb/index.php?sid=f62c927e7eb8f1d60a92dcc6fd918112 HTTP/1.1 Host: www.irishgaelictranslator.com User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.9.2.13) Gecko/20101203 Firefox/3.6.13 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-za Accept-Encoding: gzip,deflate Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7 Keep-Alive: 115 Connection: keep-alive Referer: http://www.irishgaelictranslator.com/phpbb/ucp.php?mode=login Cookie: phpbb3_cipi4_u=96645; phpbb3_cipi4_k=; phpbb3_cipi4_sid=f62c927e7eb8f1d60a92dcc6fd918112; __utma=153470688.1232378553.1294664234.1294664234.1294664234.1; __utmb=153470688.9.10.1294664234; __utmc=153470688; __utmz=153470688.1294664235.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none); style_cookie=null The following error was encountered: Invalid Response The HTTP Response message received from the contacted server could not be understood or was otherwise malformed. Please contact the site operator. Your cache administrator may be able to provide you with more details about the exact nature of the problem if needed.

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  • Fedora 15: em1 recently dissapeared and hostapd no longer serves internet to wirelessly connected devices

    - by Daniel K
    I have a laptop running hostapd, phpd, and mysql. This laptop uses an Ethernet connection to connect to the internet and acts as a wireless access point for my workplace's wifi devices. After installing some software and reconnecting my Ethernet elsewhere, my "em1" device is no longer present and wirelessly connected devices can no longer reach the internet. The software I recently installed is: pptp, pptpd, and updated some fedora libraries. I have also recently moved my desk and laptop to another location and thus had to reconnect the Ethernet elsewhere. Wifi devices no longer have access to the internet. Wirelessly connected devices are able to successfully log into the laptop, showing full strength, correct SSID, and uses the proper password. However, when I tried to connect to a site like google, the request times out. The device "em1" also no longer appears on my machine. Running: # ifup em1 will give me the following output: ERROR : [/etc/sysconfig/network-scripts/ifup-eth] Device em1 does not seem to be present, delaying initialization. And running: # dhclient em1 has the following output: Cannot find device "em1" When I run # dmesg|grep renamed, I get the following: renamed network interface eth0 to p4p1. I've tried to connect to the internet through p4p1 directly from the laptop and was successful. However, my wireless devices connected to my laptop are not able to connect to the internet. I have uninstalled pptp and pptpd using # yum erase ... but the problem still persists. To install pptp I used: # yum install pptp To install pptpd I did the following: # rpm -Uvh http://poptop.sourceforge.net/yum/stable/fc15/pptp-release-current.noarch.rpm # yum install pptpd To update my fedora libraries I used: # yum check-update # yum update EDIT: Running # route produces the following results: Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface default 10.11.200.1 0.0.0.0 UG 0 0 0 p4p1 10.11.200.0 * 255.255.252.0 U 0 0 0 p4p1 172.16.100.0 * 255.255.255.0 U 0 0 0 wlan0

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  • Why does my PC successfully boot only when unplugged for more than a few minutes?

    - by philg
    I have an HP Pavilion Elite desktop computer, model HPE-490t. I like it because it didn’t cost too much, boots itself from an SSD, came with 16 GB of RAM, and has 6 CPU cores for editing video and camera RAW images. It has one behavioral quirk that I cannot explain, however. The recent power interruptions here in the Northeast got the machine into a state where it could not be restarted. It would power up for a second or two, shut down, and then power up again, never being able to get to the point of showing anything on the monitor. I unplugged it for about 10 seconds and plugged it back in. Same behavior (fails to boot). I unplugged it and walked away for an hour, then plugged it back in and it worked perfectly! I think something similar happened after installing a second hard disk drive into this machine. So the question is why does the computer behave differently depending on how long it has been unplugged? Where is energy stored that affects the machine’s ability to boot? Capacitors in the power supply? Battery on the motherboard (there is one for the clock, but that wouldn’t be exhausted by being unplugged for an hour, I don’t think)?

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  • DNS request times out then succeeds on my local network. Why?

    - by Dan
    I have a W2K3 Server that is the Domain Controller and also the DNS server. I wanted to make another DNS zone on my network called "something.local" and then make 'A' records to point requests like 'admin.something.local' and 'www.something.local' to machines on my network. I keep getting DNS timeouts but then after 2 tries it succeeds. Why would this happen? How can I troubleshoot? From my desktop I run: nslookup admin.something.local and get: Server: server.domain.com.au.local Address: 192.168.0.10 DNS request timed out. timeout was 2 seconds. DNS request timed out. timeout was 2 seconds. Name: admin.something.local Address: 192.168.0.191 If I go back the other way: nslookup 192.168.0.191 I get: Server: server.domain.com.au.local Address: 192.168.0.10 Name: admin.something.local Address: 192.168.0.191 My DNS server address is 192.168.0.10. The new DNS zone is not hooked up to active directory. I do not have much experience with DNS. Yesterday it was working fine. I have tried doing an 'ipconfig /flushdns' on both my desktop and the DNS server

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  • Why do HTTP loopback connections not work on my subdomains?

    - by memeLab
    I have a shared hosting account at Jumba running Linux kernel 2.6.9-103.ELsmp (don't know if that helps) with cpanel 1.0 (RC1). I am using the WordPress plugin Backup Buddy, which requires HTTP loopback connections to monitor / complete backups. This works fine on memelab.com.au, but doesn't work at any subdomain (e.g.: staging.memelab.com.au). Is it possible to setup an A record or some such to remedy this? I'm aware of a workaround, (setting WP_ALTERNATE_CRON) but I find this unsatisfactory due to the messy URLs. BackupBuddy:_Frequent_Support_Issues#HTTP_Loopback_Connections_Disabled Here is the reply from my host: …as main domain have it's own separate DNS entry it have localhost entry which helps for looback connections where as subdomains don't have separate DNS zone, so it is not possible to create looback connections for it. I have cpanel access to the 'advanced zone editor' - is there anything tricky I can do there? maybe 127.0.0.2? (I remember reading that there were at least 8 available local IPs available on (some) Linuxes.) All the A records point to the server IP, with the exception of localhost.memelab.com.au which points to 127.0.0.1. I've just tried entering a new A record: localhost.itours.memelab.com.au pointing to 127.0.0.2. I still get the warning in Backup Buddy that loopback is not active, and Cpanel won't let me enter 127.0.0.1 (guess it doesn't work like that!) nslookup itours.memelab.com.au Server: 203.88.112.33 Address: 203.88.112.33#53 Non-authoritative answer: Name: itours.memelab.com.au Address: 117.55.224.177

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  • saving and searching encrypted mail

    - by student
    I often send and receive gpg-encrypted mail. At the moment I use thunderbird + enigmail (in linux) to do that. As far as I know there is no way in thunderbird to find all encrypted messages which bodies contain particular keywords. There also seems to be no option to save encrypted mails decrypted (so they would be searchable). However for me it is important to be able to search old encrypted mails. So my question is: Is there a way in linux to save incoming mails automatically decrypted in my inbox and save outgoing encrypted mail decrypted in the send folder? Both times adding a line to the body which remarks that the mail was encrypted. It could be another email client for linux that could to that or perhaps a solution using procmail or maildrop. For a procmail solution I guess there could be some problems with encoding (perhaps one have to use emil?) the solution should work well with german special characters in subject and body. Note that the solution should work for multipart encrypted messages (including encrypted attachments) too i.e. with everything which could thunderbird + enigmail generate. Further note that I don't want a discussion about security holes. For me it's ok if messages are stored decrypted on my harddrive (which is encrypted as a whole anyway). In doubt for a first solution it would be ok to store my private key passphrase in cleartext on my harddrive, too. The point is that the mails are encrypted on the mailserver or more generally on their "way through the net".

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  • Terminate child processes on ctrl-c

    - by jackweirdy
    In tiny core linux, I have the following script: #!/bin/sh # ~/.X.d/freerdp.sh rdp(){ while true do xfreerdp -f [IP Address] done } rdp & It's pretty simple; when X starts up and checks the .X.d directory (as is the case in tiny core) it finds and executes this script. The script starts up freerdp and keeps a connection open to the server by restarting it whenever it closes. As you can see from the rdp & line, the function is run in the background to allow X to continue its startup routine. The problem is that whenever I cancel X with a Ctrl-Alt-Backspace the rdp process doesn't die. I'm looking for a way to kill the process as soon as X finishes, either through: A) a script, executed on X closing, which kills the process or B) by modifying the script to check the return value of the xfreerdp command. NB - if the solution does check the return value, it must only end if the command fails to open the X display. For that reason, if you could point me to a reference for xfreerdp return values I'd be grateful.

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  • Adding custom service to nagiosgraph

    - by ravloony
    I have successfully added nagiosgraph to our nagios installation. I also added a memory checker plugin, from here : http://blog.vergiss-blackjack.de/2010/04/nagios-plugin-to-check-memory-consumption/. However I can't seem to get the graph of this service to be output by nagiosgraph. The plugin returns a single line like this: 31% (3785 of 11903 MB) used so i added a rule like this to the map file: /output:(\d+)% \((\d+) of (\d+) MB\) used/ and push @s, ['Mem', ['Percentage', 'GUAGE', $1], ['Used', 'GUAGE', $2], ['Total', 'GUAGE', $3] ]; I have also read this : http://www.mail-archive.com/[email protected]/msg36835.html and made sure that process_performance_data=1 in the nagios conf file. So far I have no graph for the Mem service on any host, and no rrd file either. I am unsure how to proceed to get this working. The documentation is rather difficult to follow and I haven't managed yet to understand it enough to do this. Can anyone point me to a tutorial, or some documentation which explains the steps needed to get a service noticed and graphed by nagiosgraph?

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  • Number of routers in small community lock up and require reboot.

    - by Anthony Hiscox
    I live in a small town which has one primary ISP. Lately I have noticed that a number of wireless routers have been locking up and requiring a reboot before allowing any connections. This has affected two of my routers, my work router, and a few others. In all cases wired continued to function as usual. Often wireless clients can see the SSID but simply won't connect. I can only think of a few possibilities and was hoping someone here might be able to point me in the right direction: Our ISP is well known to be flaky, something they are doing is causing this, what that might be I have no clue it as seems to affect the wireless only. There's a power issue in town, given our remote location and reputation for crap electrical, this seems reasonable. Only one router was plugged in to a UPS, and I'm not sure of the quality. There is some bug in all the different firmware for every one of these routers (all different). That doesn't seem reasonable, unless; it's an unknown (or known) exploit or DoS of some sort being launched by a massive team of ninjas hell bent on forcing us all to be tethered to our walls by ethernet cables or; it's just been a coincidence and I'm just paranoid (this has some weight, I mean read 4 again). Anyone else experience similar issues and have some tips?

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  • SFTP, Chroot problems on Redhat

    - by Curtis_w
    I'm having problems setting up sftp with a ChrootDirectory. I've done an equivalent setup on other distros, but for some reason I cannot get it to work on a Redhat AMI. The changes to my sshd_config file are: Subsystem sftp internal-sftp Match Group ftponly PasswordAuthentication yes X11Forwarding no ChrootDirectory %h ForceCommand internal-sftp AllowTcpForwarding no I have the concerned usere's homes at /home/user, owned by root. After connecting with a user in the ftponly group, I'm dropped into / without permissions for anything, and am unable to do anything. sftp bob@localhost Connecting to localhost... bob@localhost's password: sftp> pwd Remote working directory: / I can connect normally with users not in the ftponly group. openssh version 5.3 I've experimented with different permissions, as well as having users own their own home directory (gives a Write failed: Broken pipe error), and so far, nothing has seemed to work. I'm sure it's a permissions error, or something equally as trivial, but at this point my eyes are beginning to glaze over, and any help would be greatly appreciated. EDIT: James and Madhatter, thanks for clarifying. I was confused by chroot dropping me in /... just didn't think through it properly. I've added the appropriate directories and permissions to get read access. One other key part was enabling write access to chrooted homes: setsebool -P ssh_chroot_rw_homedirs on in order to get write access. I think I'm all set now. Thanks for the help.

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  • How do I uncompress vmlinuz to vmlinux?

    - by Lord Loh.
    I have already tried uncompress, gzip, and all other solutions that come up as google results and these have not worked for me. To get just the image search for the GZ signature - 1f 8b 08 00. > od -A d -t x1 vmlinuz | grep '1f 8b 08 00' 0024576 24 26 27 00 ae 21 16 00 1f 8b 08 00 7f 2f 6b 45 so the image begins at 24576+8 => 24584. Then just copy the image from the point and decompress it - > dd if=vmlinuz bs=1 skip=24584 | zcat > vmlinux 1450414+0 records in 1450414+0 records out 1450414 bytes (1.5 MB) copied, 6.78127 s, 214 kB/s Got these instructions verbatim from a forum online: http://www.codeguru.com/forum/showthread.php?t=415186 This process does not work for me and end up giving errors that states file not found 0024576 and all subsequent numbers. How do I proceed extracting vmlinux from vmlinuz? Thank you. EDITED: This is a reverse engineering question. I have no access to the distro to install any RPM or recompile. I start with nothing but vmlinuz.

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  • SQL Error (1064) when importing data from SQL file

    - by mejpark
    I have a MySQL database, which was originally set up with the default latin1 character set and latin1_swedish_ci collation. I was using the database like this for sometime, until I noticed strange characters on my production web site, which is powered by a database exported from my development machine. At this point, I changed the default character set of the database and tables to utf8 and the collation to utf8_unicode_ci, converted the latin1 data inside each table to utf8 (using the 'convert data' option) and exported the database as a single SQL file using HeidiSQL. When the resulting SQL file is opened in Notepad++, several characters are rendered incorrectly. For example, en dashes (-) are displayed as – and e with accent (é) are displayed as é. I changed the encoding of the file from ANSI to UTF-8 (using the encoding menu option in Notepad++) and the offending characters are rendered correctly. I saved the new utf8-encoded SQL file and attempted to import the contents into the MySQL database on my production server. The import process fails with following error: /* SQL Error (1064): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '?# -------------------------------------------------------- # Host: ' at line 1 */ /* Error with snippets directory: The specified path was not found */ The head of the SQL file: # -------------------------------------------------------- # Host: 127.0.0.1 # Server version: 5.1.33-community # Server OS: Win32 # HeidiSQL version: 6.0.0.3773 # Date/time: 2011-04-20 09:48:36 # -------------------------------------------------------- It chokes on the first line of the file, which is commented out. Why is this happening? I didn't have a problem loading data from SQL files until I changed the character set and collation of the database. I came up with an ugly workaround to this problem by performing following steps: Export database as single SQL file using HeidiSQL Open resulting file in Notepad++ and convert from ANSI to UTF-8 encoding Create new empty file in Notepad++, paste in UTF-8 and save file normally What am I missing here?

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  • How to find out what is causing a slow down of the application on this server?

    - by Jan P.
    This is not the typical serverfault question, but I'm out of ideas and don't know where else to go. If there are better places to ask this, just point me there in the comments. Thanks. Situation We have this web application that uses Zend Framework, so runs in PHP on an Apache web server. We use MySQL for data storage and memcached for object caching. The application has a very unique usage and load pattern. It is a mobile web application where every full hour a cronjob looks through the database for users that have some information waiting or action to do and sends this information to a (external) notification server, that pushes these notifications to them. After the users get these notifications, the go to the app and use it, mostly for a very short time. An hour later, same thing happens. Problem In the last few weeks usage of the application really started to grow. In the last few days we encountered very high load and doubling of application response times during and after the sending of these notifications (so basically every hour). The server doesn't crash or stop responding to requests, it just gets slower and slower and often takes 20 minutes to recover - until the same thing starts again at the full hour. We have extensive monitoring in place (New Relic, collectd) but I can't figure out what's wrong; I can't find the bottlekneck. That's where you come in: Can you help me figure out what's wrong and maybe how to fix it? Additional information The server is a 16 core Intel Xeon (8 cores with hyperthreading, I think) and 12GB RAM running Ubuntu 10.04 (Linux 3.2.4-20120307 x86_64). Apache is 2.2.x and PHP is Version 5.3.2-1ubuntu4.11. If any configuration information would help analyze the problem, just comment and I will add it. Graphs info phpinfo() apc status memcache status collectd Processes CPU Apache Load MySQL Vmem Disk New Relic Application performance Server overview Processes Network Disks (Sorry the graphs are gifs and not the same time period, but I think the most important info is in there)

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  • Unable to connect to FTP - Connection timeout after MLSD

    - by Afrosimon
    So here is my problem, I'm absolutely unable to connect to a FTP server, in circumstances I've never seen before. Here is the situation : I get a "Connection timed out" just after the MLSD command. I usually use Filezilla, under Ubuntu, but to make sure the problem isn't related to this particular client I tried a few others : gftp on ubuntu and winscp and freeftp on windows 7. All the same result. Also made sure to try with Active or Passive modes. Same result. At this point I would be inclined to think there is something wrong with my current network (furthermore, according to a coworker the FTP server is OK). But I did check with http://ftptest.net/ and I am able to get the directory listing (which I'm not able to through a FTP client). So in the end the last thing I didn't tried is to go on another network, solution which seems would work, but wouldn't be very practical in the long run. And thus I guess there's something wrong with my router... but what could it possibly be? Note : I did try to register and post this question on filezilla's board first... but I can't create an account with a gmail nor hotmail account. WTF?

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  • Write permissions on uploaded files - Linux, Apache, PHP

    - by letseatfood
    I am working on a PHP script that transfers files using FTP functions. It has always worked on my production server (which is a hosting service). The development server I have just setup (I am a novice to servers) is Debian Lenny with Apache2, PHP5, and MySQL5. The file transfer works correctly, but once the file has been written to the server, it has permissions of 600. This makes it impossible for me to view the file (JPEG) in the web browser, as permission is denied. I have scoured the internet and even broken my server installation and reinstalled it trying to figure this out (which has been fun, nonetheless!). I know it is unwise to set 777 permissions on public accessible files, but even that will not solve the problem. The only thing that works is if I chmod 777 thefile.jpg after it has been transferred, which is not a working solution. I tried changing the owner of my site files to www-data per this post, but that also does not work. My user is mike, and it still does not work whether the owner of the files is mike or root. Would somebody point me in the right direction? Thanks! And, of course, let me know if I can clarify anything.

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  • Setting the default permissions for files uploaded via FTP to a directory

    - by Kerri
    Disclaimer: I'm just a web designer/coder, and server admin stuff is my weakest point of them all. So be easy on me (and very specific). I'm using a simple CMS (Unify) on a site, where part of the functionality is that the client can upload files to a specified directory (using FTP). The permissions for the upload directory are set to 755. But when files are uploaded through the interface, they are uploaded with permissions set to 640 (instead of 644), so site visitors cannot acces the files. When I emailed the CMS's support about this, they told me that it was a server setting, and I need to make sure that files uploaded through FTP are set to 644. Makes perfect sense, but I have no idea how to do this. Any help would be greatly appreciated. This site is a shared site hosted by Network Solutions (Unix), so my access options are limited. I can edit .htaccess files, and php.ini, but that's about all I have access to. It appears I can't even log on via shell. ETA: 11/11/2010 Thanks all. I was able to work around this problem by setting up the CMS's settings in a different way. I'd be interested in following up on Nick O'Niel's suggestions, because I think he's on the right track, but unfortunately I can't access the necessary files on this particular server. So, anyway, I'm leaving this open, since the original questions isn't exactly resolved. Unfortunately, I probably can't put a correct answer to the test, since the shared server in question has nearly all of its config files tightly locked down.

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  • IP queue buffer

    - by summerbulb
    I seem to have an issue with IP queue. I have a linux machine that I am using to run some experiments. The linux machine is configured to be a router, having two NICs, connecting two other computers, and managing their network traffic. All incoming packages are captured, using iptables, and analyzed by a C application. The application analyzing the packets has a built-in delay, as part of the experiment. So I have one very fast computer sending packets through my linux-router and a (relatively) slow linux-router that analyses and deals with the packets, one by one. This situation leads to the fact that when I fire up a sender application on one of the computers connected to the linux-router, my IP queue on the linux-router gets filled up (almost) instantaneously. The IP queue's max length is currently set to 1024, and if it overflows, the packets are dropped. This is expected and i'm OK with it. But, (and this is where it gets interesting), every now and then I get the following error: "Failed to receive netlink message: No buffer space available" At start, I thought this was due to the IP queue overflow, but after some analysis i found that sometimes I get the error even if the IP queue buffer did not overflow, and sometime I DON'T get the message even though the buffer DID overflow. When I run > cat /proc/net/ip_queue, I get the following table (also used to monitor the IP queue overflow): Peer PID : 27389 Copy mode : 2 Copy range : 65535 Queue length : 0 Queue max. length : 1024 Queue dropped : 1166875 Netlink dropped : 2916 Looking at the last two values, Queue dropped seems to refer to packets that did not manage to get into the IP queue because the buffer was full. I can see this value rise as I bombard the linux-router. Netlink dropped ( as it's name implies :) ) seems to have to do with the error i'm getting. I did my best to search for material on this error, but wasn't able to find anything that seemed to point me in the required direction. Bottom line: Why am I getting this error and what can I do to avoid it?

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  • Problem with Outlook 2010 (SMTP AUTH LOGIN)

    - by Filipe YaBa Polido
    **IGNORE THIS QUESTION - SOLVED WITH A PYTHON SCRIPT available at: http://yabahaus.blogspot.com I have to connect one customer Outlook 2010 to a remote server on which I have either no right, neither way to talk to the sysadmin. This is the thing, after installing and reviewing the logs on Wireshark: Outlook Express: HELO machine AUTH LOGIN username base64 encoded password base64 encoded mails go through. Outlook 2010: HELO machine AUTH DIGEST-MD5 response from server Outlook sends just a * AUTH LOGIN password base64 encoded So... I can send mails in the same domain, but can't send outside, it gives me a relay denied message. My point is... Why the h**l Outlook 2010 doesn't send the username AND the password?! It can never login the right way :| With other versions of Outlook it works fine, and with OE works great, it auths and allows to send mail to a different domain. I've googled and nothing worked. I'm pretty sure that I'm not alone with this one. My last resort will be to configure a local proxy/server that relays to the original one :| Any help would be appreciated. Sorry my bad english as is not my natural language. Thanks.

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  • Time-Machine backup over SSH tunnel to NFS mount

    - by BTZ
    I've recently started using a new NAS which runs CentOS 6.2. One of the purposes of the NAS would be to serve as a backup target. Whilst I have been using Apple's Time-Machine for a while and I am very satisfied with it, I'd like to continue using it. Backing up directly to an address in my network is no hassle; all works fine. For security reasons I'd like all my traffic to go through an ssh tunnel to the NAS. This way I can avoid needing to get a VPNserver (for personal reasons). As of NFSv4 the NFS deamon is bound to port 2049, which makes it easy for me to direct all traffic through a ssh tunnel. Tunnel: ssh -f admin@ms -L 2000:localhost:2049 -N Mount: mount -t nfs -o nfsvers=4,rw,proto=tcp,sync,intr,hard,timeo=600,retrans=10,wsize=32768,rsize=32768,port=2000 localhost:/mac_backup /Volumes/backup This works fine for Finder/terminal and throughput is almost equal to direct traffic. (CPU of the NAS does ride high when I reach max bandwidth though) Now the problem: With Time-Machine I can't use the NFS mount point mounted on localhost. TM seems to try to connect to it and then give me a "OSStatus error 65". I also tried using NFSv3 (I correctly forwarded all ports) with no luck. Can anyone shed a light on this and/or give a solution?

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  • if the file changes send email about diff

    - by user62367
    I have 2 script. Script "A", Script "B". Script A is regulary watching the dhcpacks [dhcp release is configured to 2mins] in the logs, for the past 2 minutes. It writes the MAC addresses to a file [/dev/shm/dhcpacks-in-last-2min.txt] every 2 minutes. Ok, this is working, active clients are in this file. Super! Script B: On pastebin I'm trying to create a script, that watches the changes in /dev/shm/dhcpacks-in-last-2min.txt file ( every 1 sec). Ok. But: my watcher script [the pastebined][1] is not working fine - sometime it works, sometime it sends that someoneXY logged out`, but it's not true! Nothing happened, and the problem is not in the Script A. Can someone help me point out, what am I missing? How can I watch a file (in every sec), that contains only MAC addresses, and if someone doesn't get dhcpack in 2 minutes, the file /dev/shm/dhcpacks-in-last-2min.txt changes, and that clients MAC address will be gone from it, and i need to know, who was it [pastebined my script - but somethings wrong with it]. Thank you for any help..I've been pathing my script for days now.. :\

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  • Connect to Nonencrypted Wireless Network Using Ubuntu Commands

    - by Tim
    I failed to connect to an open i.e. nonencrypted wireless network using Ubuntu command lines. Here is what I did: $ sudo /etc/init.d/NetworkManager stop * Stopping network connection manager NetworkManager [ OK ] $ sudo /sbin/ifconfig wlan0 up $ sudo iwconfig wlan0 essid "Cavalier High-Speed 866-4-CAVTEL" $ sudo dhclient wlan0 There is already a pid file /var/run/dhclient.pid with pid 10812 killed old client process, removed PID file Internet Systems Consortium DHCP Client V3.1.1 Copyright 2004-2008 Internet Systems Consortium. All rights reserved. For info, please visit http://www.isc.org/sw/dhcp/ wmaster0: unknown hardware address type 801 wmaster0: unknown hardware address type 801 Listening on LPF/wlan0/00:0e:9b:cd:4e:18 Sending on LPF/wlan0/00:0e:9b:cd:4e:18 Sending on Socket/fallback DHCPREQUEST of 192.168.1.67 on wlan0 to 255.255.255.255 port 67 DHCPREQUEST of 192.168.1.67 on wlan0 to 255.255.255.255 port 67 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 7 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 7 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 8 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 12 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 21 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 6 No DHCPOFFERS received. Trying recorded lease 192.168.1.67 PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data. --- 192.168.1.1 ping statistics --- 1 packets transmitted, 0 received, +1 errors, 100% packet loss, time 0ms Trying recorded lease 192.168.1.45 PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data. --- 192.168.1.1 ping statistics --- 1 packets transmitted, 0 received, +1 errors, 100% packet loss, time 0ms No working leases in persistent database - sleeping. $ sudo /sbin/iwconfig wlan0 wlan0 IEEE 802.11bg Mode:Managed Frequency:2.422 GHz Access Point: Not-Associated Tx-Power=27 dBm Retry min limit:7 RTS thr:off Fragment thr=2352 B Encryption key:off Power Management:off Link Quality:0 Signal level:0 Noise level:0 Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:0 Missed beacon:0 I was wondering what the problem is and how I can do it right? Thanks and regards!

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