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Articles indexed Sunday November 4 2012

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  • Specify IPSEC port range using ipsec-tools

    - by Sandman4
    Is it possible to require IPSEC on a port range ? I want to require IPSEC for all incoming connections except a few public ports like 80 and 443, but don't want to restrict outgoing connections. My SPD rules would look like: spdadd 0.0.0.0/0 0.0.0.0/0[80] tcp -P in none; spdadd 0.0.0.0/0 0.0.0.0/0[443] tcp -P in none; spdadd 0.0.0.0/0 0.0.0.0/0[0....32767] tcp -P in esp/require/transport; In setkey manpage I see IP ranges, but no mention of port ranges. (The idea is to use IPSEC as a sort of VPN to protect internal communications between multiple servers. Instead of configuring permissions basing on source IPs, or configuring specific ports, I want to demand IPSEC on anything which is not meant to be public - I feel it's less error-prone this way.)

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  • mdadm - Recovering a 'split' RAID1 array

    - by Hamza
    I have two drives that used to be part of a single RAID1 volume but it appears that one of them went offline for some time, something I've noticed just now when I rebooted my system. I now seem to have two RAID volumes, as reported by: # cat /proc/mdstat Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] md126 : active raid1 sdc[1] 2096116 blocks super 1.2 [2/1] [_U] md127 : active (auto-read-only) raid1 sdb[0] 2096116 blocks super 1.2 [2/1] [U_] unused devices: <none> Not exactly sure where to go from here. How can I merge and re-sync these volumes without data loss? Thanks.

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  • nagios levels of escalation

    - by com
    I try to configure nagios in the following way for every service (for example "mysql seconds behind master") I need to define few levels of escalations, when level is warning I want to send only email and when level is critical I want to send email and sms . What is the right way to do this? Do be stick we the levels definition (critical or warning), if there is different way to differentiate email level and sms level of escalation? Thanks!

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  • Restore Zimbra mailbox with zmmailbox connection refused

    - by rkmax
    i'm trying to import mailboxes with zmmailbox -z -m "[email protected]$domain.com" postRestURL “//?fmt=tgz&resolve=reset” $SOURCE but always i get: zclient.IO_ERROR (Refused connection) i have 3 days reading the zimbra forums and nothing i've tryed set zimbraAttachmentsIndexingEnabled to FALSE (for account and COS) and zmcontrol restart as zimbra user There other way to restore a mailbox account without zmmailbox and without using zmlmtpinject i don't wanna extract all mailboxes some have 20GB

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  • httpd running as _www instead of www as it used to

    - by Ethon Bridges
    OSX Mountain Lion and Apache 2.2.22. I have always had the httpd.conf set as: User www Group www and it was running as such. Until today. Rebooted the server for another reason and when I tried to make some changes to a website via FTP this evening, it said access denied. Got to looking at the processes and httpd is now running as _www. WTH? Now of course all of my users are getting denied messages I assume because they were all created and permitted with the www user, not _www. Any idea why this happened or what I may have done to cause it?

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  • Script on startup without update-rc.d

    - by Jean-Philippe Blary
    I've a debian minimal installation, and I just want to start a script at startup. So, I've a script at /etc/init.d/myscript, I put a chmod 700, and create symlinks ('S20myscript') into /etc/rc2.d, rc3.d, rc4.d and rc5.d. But the script is NOT launched at all. When I put this script with update-rc.d (or insserv...), it works. I don't understand, am I forced to use this command? (and no, I don't want to use /erc/rc.local). Thanks!

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  • Why do some machines respond with many RST packets instead of RST-ACK to refuse a connection?

    - by Michael J. Gray
    I have recently been trying to track down a problem with one of our systems and have noticed that it is simply not allowed to connect to a remote machine. However, the remote machine (not controlled by us) is responding to our request for a connection with many TCP RST packets on a different port (26469, 26497, 26498) than the one we originated on (53). It simply wouldn't let up at one point and flooded us with about 10 packets/second for an hour or two of only RST on those obscure high ports. Out of the thousands of nodes we're connecting to, this is the only one ever to show this behavior. What could possibly cause this? EDIT Below is a screenshot of Wireshark when it happened. I don't have the actual dump anymore and can't reproduce this specific scenario every time. Basically, we sent a SYN and immediately got RST on an odd port and so we respond with RST and just keep going back and forth.

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  • Does Apache 2.2 (windows) have any default bandwidth limit?

    - by igino manfre'
    I'm running Apache on a server in cloud (Windows server 2008 R2 on VMware, 1 Gbps of BW, http://95.110.164.61 ). I'm streaming many live DVB MPEG Transport Stream, precompressed in loop, (not flash) generated by VLC on port 640xx and then reverse proxied by Apache on port 80. The server's firewall is open for VLC and Apache on all ports. Above 1.5 Mbps the reproduction is affected by continous stop & go. Please note that if you request a stream generated by VLC directly at http://95.110.164.61:64087/mpg2_6.4 you see a correct stream, while if you request http://95.110.164.61/mpg2_6.4 you do not. I know that Flash streaming Server uses Apache to stream on port 80 (and it works). I'm not an expert with Apache, can anyone tell me if any "special" module is required to increase the bandwidth?

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  • Linux iptables / conntrack performance issue

    - by tim
    I have a test-setup in the lab with 4 machines: 2 old P4 machines (t1, t2) 1 Xeon 5420 DP 2.5 GHz 8 GB RAM (t3) Intel e1000 1 Xeon 5420 DP 2.5 GHz 8 GB RAM (t4) Intel e1000 to test linux firewall performance since we got bitten by a number of syn-flood attacks in the last months. All machines run Ubuntu 12.04 64bit. t1, t2, t3 are interconnected through an 1GB/s switch, t4 is connected to t3 via an extra interface. So t3 simulates the firewall, t4 is the target, t1,t2 play the attackers generating a packetstorm thorugh (192.168.4.199 is t4): hping3 -I eth1 --rand-source --syn --flood 192.168.4.199 -p 80 t4 drops all incoming packets to avoid confusion with gateways, performance issues of t4 etc. I watch the packet stats in iptraf. I have configured the firewall (t3) as follows: stock 3.2.0-31-generic #50-Ubuntu SMP kernel rhash_entries=33554432 as kernel parameter sysctl as follows: net.ipv4.ip_forward = 1 net.ipv4.route.gc_elasticity = 2 net.ipv4.route.gc_timeout = 1 net.ipv4.route.gc_interval = 5 net.ipv4.route.gc_min_interval_ms = 500 net.ipv4.route.gc_thresh = 2000000 net.ipv4.route.max_size = 20000000 (I have tweaked a lot to keep t3 running when t1+t2 are sending as many packets as possible). The result of this efforts are somewhat odd: t1+t2 manage to send each about 200k packets/s. t4 in the best case sees aroung 200k in total so half of the packets are lost. t3 is nearly unusable on console though packets are flowing through it (high numbers of soft-irqs) the route cache garbage collector is no way near to being predictable and in the default setting overwhelmed by very few packets/s (<50k packets/s) activating stateful iptables rules makes the packet rate arriving on t4 drop to around 100k packets/s, efectively losing more than 75% of the packets And this - here is my main concern - with two old P4 machines sending as many packets as they can - which means nearly everyone on the net should be capable of this. So here goes my question: Did I overlook some importand point in the config or in my test setup? Are there any alternatives for building firewall system especially on smp systems?

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  • Persistent Spot Instance Request with CloudFormation

    - by PapelPincel
    Is it possible to create "Persistent Spot Instance" with AWS CloudFormation ? I'm going through the Autoscale and EC2 CloudFormation's template references but there is no mention how to set a property so the Spot requests stay persistent. When the price bid lower than the actual spot price AWS brings the instances down. I would like the instances to be started automatically when the instance price is cheaper again. This can be set manually when creating a new spot instance request by checking the option "Persistent Request" in the "Request Instances Wizard".

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  • Filezilla client unable to get directory listing from Filezilla Server (Windows)

    - by sestocker
    I've set up a self signed certificate in FileZilla server and enabled FTP over SSL/TPS. When I connect from the client FileZilla, I am able to authenticate but cannot get a directory listing: Status: Connecting to MY_SERVER_IP:21... Status: Connection established, waiting for welcome message... Response: 220-FileZilla Server version 0.9.39 beta Response: 220-written by Tim Kosse ([email protected]) Response: 220 Please visit http://sourceforge.net/projects/filezilla/ Command: AUTH TLS Response: 234 Using authentication type TLS Status: Initializing TLS... Status: Verifying certificate... Command: USER MYUSER Status: TLS/SSL connection established. Response: 331 Password required for MYUSER Command: PASS ******** Response: 230 Logged on Command: PBSZ 0 Response: 200 PBSZ=0 Command: PROT P Response: 200 Protection level set to P Status: Connected Status: Retrieving directory listing... Command: PWD Response: 257 "/" is current directory. Command: TYPE I Response: 200 Type set to I Command: PORT 10,10,25,85,219,172 Response: 200 Port command successful Command: MLSD Response: 150 Opening data channel for directory list. Response: 425 Can't open data connection. Error: Failed to retrieve directory listing I have ports 21 and 50001 through 50005 open on the firewall. We are migrating servers - the 50001 - 50005 is one of the things that helped get FTPS working on the old server. I'm not sure this installation would use the same ports? What else could be the problem?

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  • RDP Connection to Windows 7 stays really slow

    - by Pavlo
    I have an Issue with connecting to Windows 7 via RDP. I can open an RDP Session, but regardless of any settings, the responce times are really long. This in particulary is the case when opening a web page in a browser. I've tried IE, Firefox and Google Chrome. I also use RDP connection to a Windows 2008 Server from the same client machine, and the speed is very normal with all features turned on. We have Gigabit Ethernet here. So I think it can not be the client's fault. What concerns Windows 7 Machine, I've tried shutting all the sraphic features off and turning the color levels to 256 colors. Result - the same. If I work locally on the machine - I can not see any lags. What else have I tried: Using old RDP 5 Client from Microsoft Setting network autotuninglevel as seen here Do You have some ideas? Thanks in advance! Update the problem seems to be with rendering window contents. All the window borders and pannes are rendered pretty quickly, but the content shows up very slowly. Also mouse movements are recognised by the Win 7 box only after some period. Are there some hidden settings in the RDP, where one could turn some advanced features off or turn some caching on? I use Bitmap Caching, but this apparently doesn't help.

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  • Using Metro style in Internet Explorer 10 [closed]

    - by shoyip
    Possible Duplicate: Is it possible to use the IE10 App without making Internet Explorer the default browser? I'm using Windows 8 Pro with Internet Explorer 10 on, and I downloaded Google Chrome, setting it the default browser. After that I saw that when I click on the Internet Explorer shortcut on the Start screen it opened me IE10 in the Desktop. Now I want to ask: can I use the IE10 App in Metro Style without making her the default browser?

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  • Rsync to take the newest file. And a cron job?

    - by user1704877
    I have a log file on two different servers. The servers are under a load balancer so half the traffic goes to one server, and half the traffic goes to the other server. I need to take the newest log file from one machine and transfer that log file to the other machine. So if one log file is changed on one server, it gets updated on the other server. I think I need to use rsync. And do I also need to put it in a cron job?

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  • Deleting file in Samba doesn't delete file?

    - by Jeff Welling
    Why, when I delete some files in Samba, does it not delete them but instead merely change their filename from filename.txt to ._filename.txt? This is not the behaviour one would expect when "deleting" a file, so I'm wondering if there's an option I forgot to set somewhere in the samba config. It does this to some files but not to others, I have not yet spotted a pattern to its choosiness. There is a Ubuntu 12.04 machine and a Mac OS X machine which have write (and thus delete) capability, no Windows machines have write permission.

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  • UEFI boot options gone

    - by user1797930
    I ran into some issues booting Windows after trying to make a complete backup of the disc. After searching for information about some of the error codes, I found advise to change some BIOS settings, but instead I thought I would just "restore defaults" to make sure all settings were set as originally intended. After doing so, all UEFI boot options except for "Windows Boot Manager" are gone. That means, including the CD/DVD drive, so I cannot even boot from a recovery DVD anymore - and as explained, Windows is not able to boot either. Do you have any advice? When I added a secondary drive originally, it was automatically added to the boot options menu. Even when removing and re-adding the drive physically, the option does not appear again. I have tried unplugging power, and hold down start button for 10 seconds, and boot afterwards - no change. It's a laptop so removing CMOS battery is not an option. I have read information that it is an issue with data removed from NVRAM, but I am unable to find a way to recover it. "Add new boot options" requires a path - but the CD/DVD was originally available without any CD's in the drive - so there is no path available to add the drive. I did try to open EFI shell, but it seems not to be embedded in the UEFI/BIOS. It just says "not found". I'm really lost here - any advice is appreciated.

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  • Account not getting completed deleted within linux

    - by lbanz
    I've got a nas box running some flavour of linux 2.6.31.8.nv+v2 with an arm processor. It has got a samba share called 'all' that has full read write access to everyone. However one Windows machine cannot access it without prompting for authentication and I found out from the logs that the windows account matches a local account on the nas box. What I then went to do is delete the local account on the nas. I can see that /home,/etc/password + /etc/shadow the account doesn't exist anymore. However the samba logs, shows that it thinks it is still there as it says account is disabled. I've tried rebooting both nas + windows box. Is there somewhere else that it stores account information? I logged on with a different account on that Windows machine and I can access the share fine. The smb logs shows that it can't find the user and then allows anonymous access.

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  • How can I move a window that cannot be moved by mouse?

    - by Michael
    I have downloaded a version of Finale Notepad on Windows 7. When I first used it it functioned perfectly. Every time I opened it a popup asking me about downloading a different version would show up that I could just click out of. When the pop up appeared I was unable to quit out of the window or move it at all, but it posed no issue. Apparently, though, the last time I quit out of the program, the screen must have been dragged down below my taskbar. Now, I am unable to quit out of the popup when I reopen the program, meaning I can't access it at all. I tried restarting my computer, uninstalling the program, downloading different versions of the program, and even using alternate methods of moving it, such as Alt+Tab, but nothing works.

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  • How to download images using wget from a txt file that contains links

    - by SwanC
    I can download images using wget if I download from a website. But I have several links and I have saved them in a text file. For example: wget -r -A.jpg -np www.fragrancenet.com There are so many pictures on this website. I have saved the links for the particular pictures I want: www.fragrancenet.com/images1 www.fragrancenet.com/images2 www.fragrancenet.com/images3 The links are saved in a text file named images.txt in my computer. How can I download the links in the images.txt text file using wget?

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  • How to connect another computer to the router

    - by Call Me Dummy
    I already have a Windows 7 PC connected to my NETGEAR WGR614v10 router and I am able to use internet in that computer. Now I need to connect one of my old computer to the router to share the internet. It's also running Windows 7. I already connected it to the router via a CAT-5 cable but I am not able to use internet. The first computer was set up by a technician. Its IP address is 192.168.1.3, and the default gateway is 192.168.1.1. On the second PC, I changed the IPv4 to 192.168.1.4 and default gateway and preferred DNS to 192.168.1.1, but it's not working. What can I do?

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  • Is it possible to run Modern UI Apps in Windows 7

    - by soandos
    It seems like a basic question, but is there a way to run Windows 8 (Modern Apps) in Windows 7 (without a VM, that seems like cheating)? My hunch is that it would be possible with some sort of hack, as the code is written in the same .Net languages as many other programs. The only issue would be intercepting the finger to corner gestures, but I am not sure how much is there really (is it just a location, or a special win API call). Is there software that can do this, or options that need to be changed to make this work?

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  • xmonad + urxvt issue: text disappears after resizing

    - by user1212010
    I'm using Arch Linux + xmonad + urxvt bundle and trying to resolve the conflict between xmonad and urxvt. Better to explain with shots: Firstly, open the terminal and get some full-length output. Secondly, create another window, which squeezes the first. And, finally, close it to find out that half of the output disappeared. Sometimes it behaves correctly, sometimes not. Tried to find out why, but failed. Many thx in advance!

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  • Debian - Can't stop MySQL; permissions?

    - by anon
    I just tried to upgrade from debian squeeze to unstable by replacing 'squeeze' with 'unstable' in /etc/apt/sources.list. The upgrade went smoothly except for mysql, which failed because it couldn't stop mysql. /etc/init.d/mysql stop simply returns that it failed, but if I try to get the status with /etc/init.d/mysql status it gives me this error: [email protected]:~$ sudo /etc/init.d/mysql status /usr/bin/mysqladmin: connect to server at 'localhost' failed error: 'Access denied for user 'debian-sys-maint'@'localhost' (using password: YES)' . mysql is running fine, and I checked the permissions for debian-sys-maint in phpmyadmin and it's allowed to do everything, but only connect from 'localhost.'

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  • How can I make all GTK+ apps on Windows pick up themes from the same folder?

    - by Mussnoon
    I have several GTK+ apps installed (pidgin, GIMP, KeepNote et al) and I also have GTK2 themes installed separately in one location. However, picking/selecting a theme from the GTK+ theme selector does not make all the apps use that theme unless I copy and paste all the themes (or at least the one I selected) manually to the "themes" folder for each app (even that doesn't work at times - for KeepNote, for instance). This gets rather tedious and is also a waste of space. Isn't there a way to make all GTK+ apps use the same folder for themes? If yes, how?

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  • Week in Geek: Firefox 17 Beta now Forces Secure Connections for List of Selected Domains

    - by Asian Angel
    Our first edition of WIG for November is filled with news link coverage on topics such as Gmail has become the #1 e-mail service in the world, Borderlands 2 video game characters are being killed off by a sabotage attack, Ubuntu 11.04 has reached its end of life, and more. How To Play DVDs on Windows 8 6 Start Menu Replacements for Windows 8 What Is the Purpose of the “Do Not Cover This Hole” Hole on Hard Drives?

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