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• Possible Solution for Setting up a Linux VPN Server to Encrypt WLAN Traffic of Macs and iPhones on

  - by GorillaPatch

  I would like to set up a VPN server on debian linux to encrypt wireless traffic coming from my Mac or iOS device. I would like to use a certificate-based solution. Setting up a PKI infrastructure and managing certificates is OK for me. 1. Which server to pick? By looking through the internet and here on stackoverflow I found the following possible solutions: strongSwan IPSec and racoon Which solution is feasible for a linode running debian squeeze? 2. How to configure the network? If I understood correctly a VPN has a virtual network interface as an endpoint on the server side. Naively I would think that I need a DHCP server running on the server to assign a dynamic private IP (like of the class C network 192.168.xxx.xxx) to the connecting clients. Next I think I would need to set up masquerading to NAT the incoming VPN traffic to the real interface directly connected to the internet. Is this the right way to go? Do you have any configuration examples? I often saw VPN configurations used to connect to your home network, but that is not what I am looking for. I have a server up in the internet and want to use it as a proxy to encrypt traffic in insecure network environments like public WLANs.

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• Multiple Remote Desktop Connection in Windows Server 2003?

  - by Joel Bradley

  My company is transitioning all user PC's to Windows 7 64-Bit in anticipation of the 2014 cutoff for Windows XP support. So far everything has been going great except for one specific piece of software that will not run in Windows 7. The current plan is to give everyone a cheap secondary PC to run this software but I feel that's a little much for software that's not even used all the time, although it is essential. I've suggested we install virtual machines but the company does not want to pay for the XP licences. I have access to a copy of Windows Server 2003 that is no longer being used and I was wondering if it was possible to create a remote desktop server. I know it can be done on a one-to-one basis, but this is a 15 person helpdesk. I'd like to be able to support multiple remote dekstop sessions, each with their own logins and dekstops. Is this possible? Are there any other alternatives to my issue? FYI, I've been told that XP mode is only free for consumers. There are costs when used in a corporate environment.

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• Why are ISP's installing routers on my site when the feed is a form of ethernet already?

  - by Cosmin Prund

  I'm connected to 3 ISP's right now. Two of them already have routers at my site, the third one announced me "they need to install some equipment" when I requested BGP session. I can only assume they need to install a Router, since that connection is now working fine, using the usual /30 net block for the connection, and the "last-mile" solution is not going to change since they only installed it last week and the BGP was in the contract from the beginning. I simply don't understand this: the "feed" is already a form of ethernet. Even those they're using different technologies for the last mile, they're all entering the ISP router using an RJ45 WAN port. I assume the ISP router does something really important that can't be done by the Big Router on the other end of the connection. It must also be something that can hurt them if miss-configured, since they don't trust us (the client) to do the stuff on our router. And I'm not talking cheap throw-away routers here: One of the routers is Cisco 2800. Edit to add network details: I'm connected to 3 ISP's, two over Radio links, one over Fiber Optic. One of the radio links is going to get dropped and the other radio link will be turned into fiber sometime next year. The fiber is 20 Mbit, radio 1 is 40 Mbit and radio 2 is 2 Mbit. I've got a /24 of provider independent address space. I'm not doing out-of-the ordinary stuff with my network, I'm overly connected because my network needs to be "up" all the time.

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• Hard Drive that was used before not detected or accessible in Windows 7

  - by Anders

  Hello SU: My PC crashed for some unknown reason, and I am still working on what caused that. However, I pulled my main (windows) drive from my computer and hooked it up to my roommate's machine and was able to pull the data I needed off of it (i.e. the drive is good). I hook up his drives as they were, I had to turn off his machine and unplug his secondary drive to hook mine up, boot his machine and there is no second drive available in windows explorer. I opened Device Manager to see if for some reason it's drive letter got un-assigned, but there is nothing listed in there except his primary hard drive, his optical drive and one other optical drive which I believe is the virtual drive Daemon Tools made. The drive shows up in the BIOS, however after I restarted his machine again it sits on the "Entering setup....." screen at the load window. The only thing I can think of is that may have messed with stuff is I used this tutorial to create a bootable XP install on a USB drive to install XP on my machine (I am 99% certain that the optical drive in my PC is broken) and maybe it used the other hard drive's letter for the USB drive for some reason, which doesn't make much sense since it was recognized it as a different drive letter before I started the process. It is possible that it used the secondary hard drive's letter for it's work, but once again I am uncertain. Where should I go from here? He his bound to wake up within the next several hours and will probably flip a lid if I cannot get some sort of handle on this. Any and all help is greatly appreciated. PS: Anyone who helps me get this situated has a beer or two on me, as long as you are in the greater metro Detroit area, or don't mind traveling a bit!

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• Acrobat 9 Pro - shortcut key failure

  - by Rick G

  I create numerous Acrobat PDF files from MS Word documents via Acrobat 9 Pro. I often need to print a single page from an Acrobat PDF file. I normally use the keyboard shortcut Control-P (Print Dialog) and ALT-U (current page). I recently set up a new PC with Windows 7, and this shortcut combination does not work. When I press ALT-U, it moves the highlight to the correct item, but does not select the radio button. If I press the Enter key, then I print the entire document instead of the current page - VERY annoying! It looks like there is an error in the design of the Print dialog for Acrobat. There are two items which have ALT-U as the keyboard shortcut. They are "Current page" in the Print range frame, and "Summarize comments". I have been able to use Control-P (Print Dialog) and ALT-U (current page) with no problems on virtual machines and older computers running Windows XP. Maybe I installed some software on the new PC that is messing up the keyboard shortcut. Is there any way to figure out the culprit - or is this a known problem with Acrobat?

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• Snapshotting single disk of running Hyper-V VM

  - by modelnine

  I'm currently somewhat at a loss of how to create a snapshot of a single virtual hard-disk of a running Hyper-V VM. Generally, creating a differential disk while a server is shut down is no problem (i.e., call the new-vhd cmdlet and pass a ParentPath, then update the VHD-binding of the respective VM-device), but while the host is running, all I can find is checkpointing the VM as a whole (which creates snapshots of all attached disks), and leaves the VM-state in a form which isn't easily processable by external tools (i.e., it requires reading additional meta-data from the VM). Generally, what'd I'd like to happen for a single-disk snapshot (in my understanding) is: Pause the VM Rename current disk to some other name which specifies it as a base-snapshot Create a new VHD which has the renamed VHD as parent path and is marked as "current" Swap the VHD for the VM for the snapshotted hard-disk to the newly created differential VHD Resume the VM Is there any means to do this programatically? Update: I've seen that this is actually possible with SCSI-disks, i.e. pause the VM, remove the SCSI disk, make the snapshot, reattach the SCSI disk at the same position, resume the VM. And, the VM resumes properly. But: is something similar also possible with G1 machines for the boot disk which is always IDE?

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• Storing secure keys on Ubuntu web server

  - by Sencha

  I'm running Ubuntu 12.04 Precise with a DUNG (Django, Unix, Nginx & Gunicorn) environment and my app (as well as various config files) is stored in a python virtual environment inside /srv, which the www-data user has access to. The nginx & gunicorn processes are all run as www-data. My web app requires secure credentials which I am storing in an environment.sh file. This file contains various exports and is run using source before the gunicorn processes execute. My concern is the location of the environment.sh file and it's permissions. Will it be okay storing this file inside the /srv folder where the www-data has access to it? Or should it be stored and owned by root somewhere else such as /var/myapp/environment.sh? Also, regarding the www-data user, if any of my web processes (which are run as www-data) are compromised and someone gains access to them, does that mean that the user could potentially read any file on the system, even if they can't write? Including my secure keys?

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• How to set up hosts file for local environment?

  - by n00b0101

  I'm trying to create subdomains on my localhost and am way out of my territory... I'm running MAMP on my Mac OS X and I thought/think I had/have to do the following: (Assuming I want to create me.localhost.com and you.localhost.com) (1) Edit /private/etc/hosts Right now, it looks like this: 127.0.0.1 localhost 255.255.255.255 broadcasthost ::1 localhost fe80::1%lo0 localhost So, do I just make it: 127.0.0.1 localhost 127.0.0.1 me.localhost.com 127.0.0.1 you.localhost.com 255.255.255.255 broadcasthost ::1 localhost fe80::1%lo0 localhost (2) I'm assuming I don't need to mess with DNS at all because it's local? So, the hosts file should suffice? (3) And then, I need to edit my httpd.conf file to include virtual hosts? I tried this, but it's not picking it up... NameVirtualHost * <VirtualHost *> DocumentRoot "/Applications/MAMP/htdocs" ServerName localhost </VirtualHost> <VirtualHost *> DocumentRoot "/Applications/MAMP/htdocs/me.localhost.com" ServerName me.localhost.com </VirtualHost> <VirtualHost *> DocumentRoot "/Applications/MAMP/htdocs/you.localhost.com" ServerName you.localhost.com </VirtualHost> Not sure if I'm way off-base here... Help is greatly appreciated!

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• Collect temperature and fan speed with munin from Windows 7 PC?

  - by nfm

  Hi, I'm quite fond of munin and using it also at home to monitor my PCs. What was super-duper easy under Linux is pretty much unsolvable for me under Windows: I'd like to monitor CPU and Motherboard temperatures as well as fan speed. On Linux I'm using lm-sensors and the plugin for munin was basically there. I access already some information from my Windows machine via SNMP (disk space, CPU usage, memory usage); the graphs are simple as is the information exposed via SNMP, but they do their job. But when it comes to temperature and fan speed I'm running against a wall. My research so far resulted in that Windows does not by default provide out of the box ability to retrieve temperature/fan speed data. Third party applications are necessary which have know-how how to communicate with the Motherboard chips. The best I cam up with is that SpeedFan exposes a shared memory interface and there exists a library which hooks into Windows SNMP facility and bridges over to SpeedFans shared memory interface; it's called SFSNMP (site currently down). Unfortunately the library doesn't work, there's a bug report at SpeedFan open about it, but it's currently not moving (although the SFSNMP author is active there) . So, unless that's going to work like anytime soon, are there any alternatives? I'm not found of buying any software to get that feature, given that I take it as granted that my system exposes me the information to properly monitor it, but anyway don't just not answer because of this.

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• Slow RDP after server joins domain

  - by Chris Grove

  We're having RDP issues with Amazon cloud servers that we recently joined to an Active Directory domain. The setup is: A local office network A virtual private cloud in Amazon An IPSec tunnel between the two networks A number of Windows 2008 R2 servers on both networks An AD domain (call it abc.net), with one domain controller in each network. The domain controllers are both new, fresh installs. Before we had the domain set up we had local accounts for the cloud computers which were used for RDP access. Our idea was to get all of the servers on to the domain so we could use domain logins instead of per-server local logins. Before the cloud servers were in the domain, RDP (from the office network or through a VPN to the cloud) worked great. After we joined the cloud servers to the domain, RDP from the office became very slow - a few minutes to log in, long frequent pauses when the interface is unresponsive, generally just a slow and frustrating experience. This is a problem regardless of whether a domain or local login is used for RDP. Oddly, when outside of the office network and connecting to the cloud directly with the VPN, RDP is still very responsive. Any idea why RDP from office to cloud is suddenly very slow after the cloud servers join the domain? What can I look at in our configuration to address this? Any help is greatly appreciated.

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• SSH Keys Authentication keeps asking for password

  - by Rhyuk

  Im trying to set access from ServerA(SunOS) to ServerB(Some custom Linux with Keyboard Interactive login) with SSH Keys. As a proof of concept I was able to do it between 2 virtual machines. Now in my real life scenario it isnt working. I created the keys in ServerA, copied them to ServerB, chmod'd .ssh folders to 700 on both ServerA,B. Here is the log of what I get. debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: server->client aes128-ctr hmac-md5 none debug1: kex: client->server aes128-ctr hmac-md5 none debug1: Peer sent proposed langtags, ctos: debug1: Peer sent proposed langtags, stoc: debug1: We proposed langtags, ctos: en-US debug1: We proposed langtags, stoc: en-US debug1: SSH2_MSG_KEX_DH_GEX_REQUEST sent debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP debug1: dh_gen_key: priv key bits set: 125/256 debug1: bits set: 1039/2048 debug1: SSH2_MSG_KEX_DH_GEX_INIT sent debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY debug1: Host 'XXX.XXX.XXX.XXX' is known and matches the RSA host key. debug1: Found key in /XXX/.ssh/known_hosts:1 debug1: bits set: 1061/2048 debug1: ssh_rsa_verify: signature correct debug1: newkeys: mode 1 debug1: set_newkeys: setting new keys for 'out' mode debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: newkeys: mode 0 debug1: set_newkeys: setting new keys for 'in' mode debug1: SSH2_MSG_NEWKEYS received debug1: done: ssh_kex2. debug1: send SSH2_MSG_SERVICE_REQUEST debug1: got SSH2_MSG_SERVICE_ACCEPT debug1: Authentications that can continue: publickey,keyboard-interactive debug1: Next authentication method: publickey debug1: Trying private key: /XXXX/.ssh/identity debug1: Trying public key: /xxx/.ssh/id_rsa debug1: Authentications that can continue: publickey,keyboard-interactive debug1: Trying private key: /xxx/.ssh/id_dsa debug1: Next authentication method: keyboard-interactive Password: Password: ServerB has pretty limited actions since its a custom propietary linux. What could be happening? EDIT WITH ANSWER: Problem was that I didnt have those settings enabled in the sshd_config (Refer to accepted answer) AND that while pasting the key from ServerA to ServerB it would interpret the key as 3 separate lines. What I did was, in case you cant use ssh-copy-id like I couldnt. Paste the first line of your key in your "ServerB" authorized_keys file WITHOUT the last 2 characters, then type yourself the missing characters from line 1 and the first one from line 2, this will prevent adding a "new line" between the first and second line of the key. Repeat with the 3d line.

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• Intermittent Trouble Entering Hibernate on WinXP

  - by kquinn

  My personal desktop, running 32-bit Windows XP SP2 (with 4GB RAM, 2.75GB addressable, swap disabled, hiberfil.sys existing and contiguous on C:\; SP3 is not installed because SP2 has been working fine and I do not want to re-qualify with SP3 just for sheer perversity) typically gets hibernated at night. For a long time this worked great, but recently the machine has had trouble entering hibernation. Sometimes when I press my power button (configured to hibernate), the box will start the procedure for hibernating (i.e., go to the blue "Windows XP" background logo and display a message about entering hibernation), but before displaying the usual blue-on-black hibernation progress bar it will drop back to the desktop. No error messages appear, on screen or in the system log. The only record of unsuccessful hibernation attempts in the system log, which proudly proclaims that "The Windows Image Acquisition (WIA) service entered the running state." once per failed hibernation attempt. The problem is almost certainly resource related: if I then close one or more applications which are running, and repeat the exact same process, the machine will hibernate perfectly. There does not appear to be a reliable high-water mark for virtual or physical memory use, below which the machine is guaranteed to hibernate; it's different every time (though typically, below about 1.1–1.4 GB memory usage seems to be where hibernate succeeds most often). Memory may not even be the relevant resource; as far as I know, it could also be handles or sockets. This behavior is relatively recent: it has only started in the last few months; before then, I could hibernate reliably no matter what the current resource use of the system. This machine claims to have hotfix Q909095 installed, but since the symptoms of my problem match KB909095 rather well, I'm suspicious if this fix is actually working as intended. Any ideas on how to fix this or where to start debugging?

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• PC dies when running at 100% CPU

  - by user155631

  I recently wrote some Java code to generate images of the Mandelbrot set (fractal). I made use of the new Fork/Join facility in Java 7 to run separate threads on all four cores (2 real, 2 virtual)simultaneously, using a large number of iterations for greater accuracy. The problem is, the process runs fine for about a minute, and then it's as if someone has pulled the plug and the PC just dies. I thought it must be the CPUs overheating, so I ran Real Temp to monitor the temperature. It's an Intel i3 processor. I can see the temperature creeping up to 70 degrees, and then it seems to level off there and run for about another 30 seconds before dying. According to Real Temp, there's still a gap of 35 degrees between the actual temperature and TJ max. I also tried disabling "CPU TM function" in the BIOS, but the problem still occurs. A colleague suggested that it might be a power supply problem, so I borrowed a more powerful PSU (can't remember what wattage it was, but it's higher than mine which is 500W). The exact same thing still happens though. Is anyone able to suggest what the problem might be, or what I can try next?

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• Dell PowerEdge T710, add a new hard disk, how to?

  - by user1340802

  I need to add a new hard disk to a PowerEdge T710 running on Vmware EXSI 4. this hard disk is a 'normal' desktop hard disk 1TB (that is it is not coming from Dell, I also have no rack for it to plug it inside any of the front bay) I would like to add this disk for a virtual machine needing space, the most easily as possible. I have find that there is an avaiable sata cable with its electric power, so may I just add the disk plugging these and using the empty 5"1/4 slot available under the CD drive (with a 5"1/4 - 3"1/2 bay adaptater) ? (even if this way it seems that i bypass the raid controller that own the front bay with racks)) that way i think could be easier than adding the disk to the already defined Raid (btw i am also not sure on how to do these but i would not risk to mess the already working things) what are the other operations that i would have to do to ? (sorry I am a real beginner on Vmware EXSI and PowerEdge management :/ i have seen that there is some management from Bios (CTRL+R as start up) so that the disk will be seen or initialize it. I am really not sure of the steps needed...) thank you, best.

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• mod_rewrite not working for subdomain in Apache2

  - by Matt

  Hi, I'm having some trouble with mod_rewrite. So I'm implementing it through .htaccess, and I can get it working on my main vhost, domain.com - what I want it to do is rewrite http:// domain.com to force it to https:// domain.com, which it does well. I want to have name-based vhosts for the one IP with the following redirects: (I'm breaking up domain names with a space because otherwise serverfault recognises them as links) http:// domain.com -- https:// domain.com http:// staging.domain.com -- https:// staging.domain.com http:// test.domain.com -- https:// test.domain.com http:// beta.domain.com -- https:// beta.domain.com domain.com redirects to https:// domain.com, but staging.domain.com doesn't, although I can access https:// staging.domain.com. The .htaccess is identical for both, just with the domain name different. It doesn't seem to do any rewriting at all for staging.domain.com, I've tested this by trying to get it to rewrite to www.google.com. I have a wildcard DNS record, *.domain.com which points to the domain IP. Is there a particular way I should have the virtualhosts configured to allow this? I keep reading in the Apache documentation that it doesn't support multiple SSL name-based vhosts. But I can access both https:// domain.com and https:// staging.domain.com just fine. Any thoughts? Thanks to everyone for your help with this.

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• Isolating Apache virtualhosts from the rest of the system

  - by JesperB

  I am setting up a web server that will host a number of different web sites as Apache VirtualHosts, each of these will have the possibility to run scripts (primarily PHP, possiblu others). My question is how I isolate each of these VirtualHosts from eachother and from the rest of the system? I don't want e.g. website X to read the configuration of website Y or any of the server's "private" files. At the moment I have set up the VirtualHosts with FastCGI, PHP and SUExec as described here (http://x10hosting.com/forums/vps-tutorials/148894-debian-apache-2-2-fastcgi-php-5-suexec-easy-way.html), but the SUExec only prevents users from editing/executing files other than their own - the users can still read sensitive information such as config files. I have thought about removing the UNIX global read permission for all files on the server, as this would fix the above problem, but I'm not sure if I can safely do this without disrupting the server function. I also looked into using chroot, but it seems that this can only be done on a per-server basis, and not on a per-virtual-host basis. I'm looking for any suggestions that will isolate my VirtualHosts from the rest of the system. PS I'm running Ubuntu 12.04 server

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• How to point any *.mydomain variation to localhost (for development)?

  - by user41339

  Hi all. I am developing a site, which will make use of any given [variation of] subdomain name part (that is, the part prefixed before the host name and, optionally, the TLD part). I would imagine that in production, that would be an easy feat - make sure the DNS for second-level domain name part points to an IP, set up Apache2 virtual host to listen on that (or any) IP port 80, and just use PHP to make decisions based on the "Host" request header. However, currently the site is localhost, since I am developing it using my workstation, so first I patched the /etc/hosts to include: 127.0.0.1 mydomain I only used one name part (arguably a custom TLD) so as to not interfere with the Internet domain names. Then I set up a VirtualHost directive for Apache 2.2 like: <VirtualHost *:80> ServerName mydomain But now I can see that f.e. example.mydomain does not point to localhost, meaning the the /etc/hosts addition is not effective for "something.mydomain". It appears the rules are taken verbatim, and also I have checked that wildcards like *.mydomain are not allowed. Is there a solution for this?

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• How do I permanently delete /var/log/lastlog?

  - by GregB

  My /var/log/lastlog file is huge. I know it's really only a few kilobytes, but tar isn't smart enough to know that, so when I image a virtual machine, my restore fails because it thinks I'm trying to load more data than I have capacity on my disk. I want to delete /var/log/lastlog and stop any and all logging to the file. I'm aware of the security implications. This logging needs to stop to preserve my backup strategy. I've made a change to /etc/pam.d/login which I was told would disable logging to /var/log/lastlog, but it does not appear to work as /var/log/lastlog keeps growing. # Prints the last login info upon succesful login # (Replaces the `LASTLOG_ENAB' option from login.defs) #session optional pam_lastlog.so Any ideas? EDIT For anyone interested, I use Centrify Express to authenticate my users via LDAP. Centrify Express is "free", but one of the drawbacks is that I can't manage user UIDs via LDAP, so they are given a dynamic UID when they login to a server. Centrify picks some crazy high UID values (so they don't conflict with local users on the server, presumably). /var/log/lastlog is indexed by UID, and grows to accommodate the largest UID on the system. This means that when a Centrify user logs in, they get a UID in the upper-end of the UID range, which causes lastlog to allocate an obscene amount of space, according to the file system. ~$ ll /var/log/lastlog -rw-rw-r-- 1 root root 291487675780 Apr 10 16:37 /var/log/lastlog ~$ du -h /var/log/lastlog 20K /var/log/lastlog More Into --- Sparse Files

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• Setting Remote Desktop to allows IPv6 connections

  - by Garrett

  Setup: Basically I have 3 machines (2 virtual and 1 physical) that I would like to be able to RDP in to from outside my NAT (a router). The VMs are Windows 7 and Windows XP, both fully patched with Teredo installed and working, both running in VirtualBox (their host also has Teredo working, though I'm not sure if that matters). They both have bridged network adapters with promiscuous mode enabled. The physical machine is Windows 7 fully patched with an HFS server running on it and a dynamic DNS set up for my public IPv4 address and port forwarded. It also has Teredo installed and working. Symptoms: According to http://test-ipv6.com/ all 3 have public IPv6 addresses, and they can all connect to http://ipv6.google.com/. I can ping the XP VM from the host it's running on but I cannot ping it from any other machine. Also, I cannot ping either of the other machines from anywhere. I cannot connect to any of them over RDP from IPv6, however I can connect to all of them through IPv4. Any ideas what is going wrong?

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• How can I add a second hard drive to a previously configured UEFI/ACHI Windows 8 machine?

  - by pflyer

  Recently purchased a new Windows 8 PC. It came with one hard drive. I want to a second hard drive to it. This second hard drive is my data hard drive from my previous computer. However, I have run into issues when the system accesses it. The drive is found in the BIOS. But is not seen by Explorer or Disk Management. I have added the drive to the next available SATA slot: SATA 2. The machine is a UEFI/ACHI based machine. In my reading I have found people documenting the following: 1) adding multiple partitioned hard drives (like mine is) to UEFI based machines is not possible 2) I have seen it suggested that you can only add blank hard drives to UEFI based machines. However, in doing so, I did not have success. I tried to add it as a hard drive with unallocated space and then as a hard drive with a single simple partition. Both attempts failed. My ultimate question: What is the proper procedure for adding a second hard drive to a UEFI/ACHI machine? I do not want to reinstall the OS and start from scratch as I have seen suggested elsewhere. There has to be a way to accomplish this without all that hassle. Thanks in advance for your help.

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• SSD for swap on Ubuntu server

  - by grs

  Currently I am reading SSD reviews and I wonder how much exactly I will benefit if I move the 24 GB swap from 7200rpm HDD to SSD. Does anyone implemented swap space on SSD? Is this generally good idea? On a side note: I read that ext4 has much better performance if the journal is on SSD. Anyone with such a setup? Thanks! Edit: Here I will answer the questions posted: Occasionally, relatively rare I am hitting the swap. I know what the swap is for and that is better to get more RAM. When the server begins to swap its performance degrades (not a surprise). The idea is if I have few memory hungry processes running, to improve the overall system performance at that time, using SSD for swap, instead of slower rotational media. At the end - I want to be able to login faster and check the server state during swapping, instead of waiting on the login prompt. And of what I see SSD is cheaper per GB than RAM. Would I have better server performance during swapping (as rare it is) using SSD compared to HDD? Where 10k or 15k rpm HDDs would rate in this scenario? Thank you all for your quick and prompt answers!

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• Why is ssh agent forwarding not working?

  - by J. Pablo Fernández

  In my own computer, running MacOSX, I have this in ~/.ssh/config Host * ForwardAgent yes Host b1 ForwardAgent yes b1 is a virtual machine running Ubuntu 12.04. I ssh to it like this: ssh pupeno@b1 and I get logged in without being asked for a password because I already copied my public key. Due to forwarding, I should be able to ssh to pupeno@b1 from b1 and it should work, without asking me for a password, but it doesn't. It asks me for a password. What am I missing? This is the verbose output of the second ssh: pupeno@b1:~$ ssh -v pupeno@b1 OpenSSH_5.9p1 Debian-5ubuntu1, OpenSSL 1.0.1 14 Mar 2012 debug1: Reading configuration data /etc/ssh/ssh_config debug1: /etc/ssh/ssh_config line 19: Applying options for * debug1: Connecting to b1 [127.0.1.1] port 22. debug1: Connection established. debug1: identity file /home/pupeno/.ssh/id_rsa type -1 debug1: identity file /home/pupeno/.ssh/id_rsa-cert type -1 debug1: identity file /home/pupeno/.ssh/id_dsa type -1 debug1: identity file /home/pupeno/.ssh/id_dsa-cert type -1 debug1: identity file /home/pupeno/.ssh/id_ecdsa type -1 debug1: identity file /home/pupeno/.ssh/id_ecdsa-cert type -1 debug1: Remote protocol version 2.0, remote software version OpenSSH_5.9p1 Debian-5ubuntu1 debug1: match: OpenSSH_5.9p1 Debian-5ubuntu1 pat OpenSSH* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_5.9p1 Debian-5ubuntu1 debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: server->client aes128-ctr hmac-md5 none debug1: kex: client->server aes128-ctr hmac-md5 none debug1: sending SSH2_MSG_KEX_ECDH_INIT debug1: expecting SSH2_MSG_KEX_ECDH_REPLY debug1: Server host key: ECDSA 35:c0:7f:24:43:06:df:a0:bc:a7:34:4b:da:ff:66:eb debug1: Host 'b1' is known and matches the ECDSA host key. debug1: Found key in /home/pupeno/.ssh/known_hosts:1 debug1: ssh_ecdsa_verify: signature correct debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: Roaming not allowed by server debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey,password debug1: Next authentication method: publickey debug1: Trying private key: /home/pupeno/.ssh/id_rsa debug1: Trying private key: /home/pupeno/.ssh/id_dsa debug1: Trying private key: /home/pupeno/.ssh/id_ecdsa debug1: Next authentication method: password pupeno@b1's password:

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• VirtualBox how to merge arbitrary snapshot into base vdi

  - by jmathew

  I botched a transfer of a VM from one harddisk to the other. Now I'm left with the base vdi and a whole bunch of snapshots. My steps Copied old VM directory over to new HDD Deleted old VM and added new VM using using Machine-add and providing the old XML file Couldn't add base vdi file due to conflict so changed the UUID of base vdi with VBOXMANGE.EXE internalcommands sethduuid Attempt to rollback to a snapshot, but it seems the VM is looking for the snapshots on the old HDD (which is formatted and gone) This is the error (networked is the name): Failed to restore the snapshot networked of the virtual machine lfs. Could not open the medium 'H:\vm\ft.vdi'. VD: error VERR_PATH_NOT_FOUND opening image file 'H:\vm\ft.vdi' (VERR_PATH_NOT_FOUND). Result Code: E_FAIL (0x80004005) Component: Medium Interface: IMedium {53f9cc0c-e0fd-40a5-a404-a7a5272082cd} The old HDD was drive H: the new one is drive N: How can I modify the snapshots/VM to look in N:\vm\ft.vdi for the base vdi? I've already set the default settings in VirtualBox in general (default vm/vm snapshot location). Or if not that how can I merge the old snap shot with the base vdi given that the only things that have changed is the base vdi's UUID? Thanks

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• Sending mails via Mutt and Gmail: Duplicates

  - by Chris

  I'm trying to setup mutt wiht gmail for the first time. It seems to work pretty well, however when I send a mail from Mutt i appears twice in Gmail's sent folder. (I assume it's also sent twice - I'm trying to validate that) My configuration (Stripped of coloring): # A basic .muttrc for use with Gmail # Change the following six lines to match your Gmail account details set imap_user = "XX" set smtp_url = "[email protected]@smtp.gmail.com:587/" set from = "XX" set realname = "XX" # Change the following line to a different editor you prefer. set editor = "vim" # Basic config, you can leave this as is set folder = "imaps://imap.gmail.com:993" set spoolfile = "+INBOX" set imap_check_subscribed set hostname = gmail.com set mail_check = 120 set timeout = 300 set imap_keepalive = 300 set postponed = "+[Gmail]/Drafts" set record = "+[Gmail]/Sent Mail" set header_cache=~/.mutt/cache/headers set message_cachedir=~/.mutt/cache/bodies set certificate_file=~/.mutt/certificates set move = no set include set sort = 'threads' set sort_aux = 'reverse-last-date-received' set auto_tag = yes hdr_order Date From To Cc auto_view text/html bind editor <Tab> complete-query bind editor ^T complete bind editor <space> noop # Gmail-style keyboard shortcuts macro index,pager y "<enter-command>unset trash\n <delete-message>" "Gmail archive message" macro index,pager d "<enter-command>set trash=\"imaps://imap.googlemail.com/[Gmail]/Bin\"\n <delete-message>" "Gmail delete message" macro index,pager gl "<change-folder>" macro index,pager gi "<change-folder>=INBOX<enter>" "Go to inbox" macro index,pager ga "<change-folder>=[Gmail]/All Mail<enter>" "Go to all mail" macro index,pager gs "<change-folder>=[Gmail]/Starred<enter>" "Go to starred messages" macro index,pager gd "<change-folder>=[Gmail]/Drafts<enter>" "Go to drafts" macro index,pager gt "<change-folder>=[Gmail]/Sent Mail<enter>" "Go to sent mail" #Don't prompt on exit set quit=yes ## ================= #Color definitions ## ================= set pgp_autosign

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• GlassFish v2.1 -- getting Application Client and Eclipselink to work together?

  - by Nick

  We are trying to use Eclipselink 1.1 with Glassfish v2.1. Following the instructions on: http://wiki.glassfish.java.net/Wiki.jsp?page=FaqEclipseLinkGlassFishV2 I adapted the instructions for the appclient script on linux by adding the lines: APPCPATH=$APPCPATH:$AS_INSTALL/lib/eclipselink-1.1.1.jar export APPCPATH to the appclient shell script. This however is not working. On running the application client (using Glassfish's webstart), I get the error: WARNING: "IOP00810257: (MARSHAL) Could not load class org.eclipse.persistence.indirection.IndirectList" Anyone else succeed in getting GF v 2.1 to work with eclipselink? or any ideas on what I might be doing wrong? I found this bug report: http s://glassfish.dev.java.net/issues/show_bug.cgi?id=8204 (New users can't post more than 1 link, so remove the space between 'http' and 's'.) Where Tim Quinn (tjquinn) said: App client container support for persistence is not yet in place I think this refers only to Glassfish v3, and it should be working in Glassfish v2. Is this correct? I'm working on the assumption that this will work once the ACC knows where to find the eclipselinks jar. Thanks in advance, Nick.

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