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  • What exactly does ssh send when performing key negotiation?

    - by Checkers
    When explicitly specifying identity file to ssh: ssh -i ./id_rsa ... I have these lines in ssh debug trace: debug1: Offering public key: ./id_rsa debug3: send_pubkey_test debug2: we sent a publickey packet, wait for reply Does it mean ssh-generated id_rsa contains public RSA exponent as well, or ssh is sending out my private key? (which, of course, does not make sense). id_rsa format seems to be rather explicit that it contains private key with its "BEGIN PRIVATE KEY" block.

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  • LXC container can only access host via bridge

    - by vitaut
    I have an LXC container with i686 Ubuntu 12.04 running on a x86_64 Ubuntu 12.04 host. I've set up a bridge using instructions here. However the ping from the container only goes through to the host and not to other machines on the local network. Similarly only the host and not the other machines see the container OS. The host's /etc/network/interfaces file looks as follows: auto lo iface lo inet loopback iface eth0 inet manual auto br0 iface br0 inet dhcp bridge_ports eth0 bridge_fd 0 bridge_maxwait 0 The container's /etc/network/interfaces file looks as follows: auto lo iface lo inet loopback auto eth0 iface eth0 inet dhcp And here's the relevant part of the container's config: lxc.network.type=veth lxc.network.link=br0 lxc.network.flags=up Any ideas what I'm doing wrong? Additional info: The output of iptables-save on host: $ sudo iptables-save # Generated by iptables-save v1.4.12 on Sat Oct 26 06:06:48 2013 *filter :INPUT ACCEPT [6854:721708] :FORWARD ACCEPT [4067:538895] :OUTPUT ACCEPT [4967:522405] COMMIT # Completed on Sat Oct 26 06:06:48 2013 # Generated by iptables-save v1.4.12 on Sat Oct 26 06:06:48 2013 *nat :PREROUTING ACCEPT [82235:21547307] :INPUT ACCEPT [16:1070] :OUTPUT ACCEPT [9386:583359] :POSTROUTING ACCEPT [14693:1291952] -A POSTROUTING -s 10.0.3.0/24 ! -d 10.0.3.0/24 -j MASQUERADE COMMIT # Completed on Sat Oct 26 06:06:48 2013 The output of brctl show on host: $ brctl show bridge name bridge id STP enabled interfaces br0 8000.080027409684 no eth0 vethBkwWyV The output of ifconfig br0 on host: $ ifconfig br0 br0 Link encap:Ethernet HWaddr 08:00:27:40:96:84 inet addr:192.168.1.11 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::a00:27ff:fe40:9684/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:232863 errors:0 dropped:0 overruns:0 frame:0 TX packets:59518 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:34437354 (34.4 MB) TX bytes:198492871 (198.4 MB) The output of ifconfig eth0 on host: $ ifconfig eth0 eth0 Link encap:Ethernet HWaddr 08:00:27:40:96:84 inet6 addr: fe80::a00:27ff:fe40:9684/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:299419 errors:0 dropped:0 overruns:0 frame:0 TX packets:203569 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:59077446 (59.0 MB) TX bytes:372056540 (372.0 MB) The output of ifconfig eth0 on container: $ ifconfig eth0 eth0 Link encap:Ethernet HWaddr 00:16:3e:74:08:2b inet addr:192.168.1.12 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::216:3eff:fe74:82b/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:81 errors:0 dropped:0 overruns:0 frame:0 TX packets:113 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:8506 (8.5 KB) TX bytes:9021 (9.0 KB)

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  • iptables & allowed port refusing connection

    - by marfarma
    Can you see what I'm doing wrong? On Ubuntu Server 9.1, I'm attempting to allow traffic on port 1143 for a non-privileged IMAP host. Connection is refused when testing with telnet example.com 1143 but connection is allowed testing with telnet example.com 80 from my pc to remote internet hosted server. Both rules appear identical and are located near each other with no rules rejecting connections intervening in the rules file. I can't figure it out. iptables -L returns this: Chain INPUT (policy ACCEPT) target prot opt source destination ACCEPT all -- anywhere anywhere REJECT all -- anywhere 127.0.0.0/8 reject-with icmp-port-unreachable ACCEPT all -- anywhere anywhere state RELATED,ESTABLISHED ACCEPT tcp -- anywhere anywhere tcp dpt:www ACCEPT tcp -- anywhere anywhere tcp dpt:https ACCEPT tcp -- anywhere anywhere tcp dpt:http-alt ACCEPT tcp -- anywhere anywhere tcp dpt:7070 ACCEPT tcp -- anywhere anywhere tcp dpt:1143 ACCEPT tcp -- anywhere anywhere state NEW tcp dpt:ssh ACCEPT icmp -- anywhere anywhere icmp echo-request LOG all -- anywhere anywhere limit: avg 5/min burst 5 LOG level debug prefix `iptables denied: ' REJECT all -- anywhere anywhere reject-with icmp-port-unreachable Chain FORWARD (policy ACCEPT) target prot opt source destination REJECT all -- anywhere anywhere reject-with icmp-port-unreachable Chain OUTPUT (policy ACCEPT) target prot opt source destination ACCEPT all -- anywhere anywhere and my rules file contains this: # Generated by iptables-save v1.4.4 on Wed May 26 19:08:34 2010 *nat :PREROUTING ACCEPT [3556:217296] :POSTROUTING ACCEPT [6909:414847] :OUTPUT ACCEPT [6909:414847] -A PREROUTING -p tcp -m tcp --dport 80 -j REDIRECT --to-ports 8080 -A PREROUTING -p tcp -m tcp --dport 80 -j REDIRECT --to-ports 8080 COMMIT # Completed on Wed May 26 19:08:34 2010 # Generated by iptables-save v1.4.4 on Wed May 26 19:08:34 2010 *filter :INPUT ACCEPT [1:52] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [1:212] -A INPUT -i lo -j ACCEPT -A INPUT -d 127.0.0.0/8 ! -i lo -j REJECT --reject-with icmp-port-unreachable -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT -A INPUT -p tcp -m tcp --dport 80 -j ACCEPT -A INPUT -p tcp -m tcp --dport 443 -j ACCEPT -A INPUT -p tcp -m tcp --dport 8080 -j ACCEPT -A INPUT -p tcp -m tcp --dport 7070 -j ACCEPT -A INPUT -p tcp -m tcp --dport 1143 -j ACCEPT -A INPUT -p tcp -m state --state NEW -m tcp --dport 22 -j ACCEPT -A INPUT -p icmp -m icmp --icmp-type 8 -j ACCEPT -A INPUT -m limit --limit 5/min -j LOG --log-prefix "iptables denied: " --log-level 7 -A INPUT -j REJECT --reject-with icmp-port-unreachable -A FORWARD -j REJECT --reject-with icmp-port-unreachable -A OUTPUT -j ACCEPT COMMIT # Completed on Wed May 26 19:08:34 2010

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  • Connection closed by remote host

    - by kidrobot
    I'm trying to connect to a server using a private key generated through cPanel and stored on my local machine, but I am getting the "Connection closed by remote host". Any ideas? XXXXX-computer-2:~ XXXX$ ssh -v -i /path/to/private/key [email protected] OpenSSH_5.1p1, OpenSSL 0.9.7l 28 Sep 2006 debug1: Reading configuration data /etc/ssh_config debug1: Connecting to xxx.com XX.XX.XX.XX] port 22. debug1: Connection established. debug1: identity file /path/to/private/key type -1 ssh_exchange_identification: Connection closed by remote host

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  • Anyone know of a utility to print a set of similar web pages?

    - by Umber Ferrule
    I need to print potentially a couple of hundred letters (formatted web pages) which are automatically generated by another system. I'm looking for something that I can point at a directory containing these web pages, set the print options once and then it will print them all without any further intervention or messing about. Preferably free. Windows (XP onwards).

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  • Excel 2007 user warning when opening xls files

    - by J Angwenyi
    I am getting the following error warning when opening an xls file generated using 'CarlosAg.ExcelXmlWriter.dll' using Excel 2007 The file you are trying to open,'', is in a different format than specified by the file extension. Verify that the file is not corrupted and is from a trusted source before opening the file. Do you want to open the file now? Any idea how to resolve?

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  • How can make rsync use sudo

    - by Bryan M.
    I use rsync to mirror a number of folders on our failover server. However, some of our files, such as thumbnails or full-text indexes, are generated by our applications under the web user (named 'nobody'), and default to restrictive permissions. Also, I'm doing this over ssh, where root access is disabled, and I'd like to keep it that way, if possible. Is there any reasonable way I can tell rsync to run as sudo? Or should I look into changing the file permissions? Thanks

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  • Why is the server performance so poor? What can be done to improve the speed of the server?

    - by fslsyed
    Very slow processing using Windows Server2008 R2 Standard with Service Pack One. Situation: Read a text file using the text data to populate a series of MS Sql tables. The converted data is used to generate monthly PDF invoice files; the PDF files are saved directly to the hard drive. The application is multi-threading with one thread used for the text conversion and three threads for PDF invoice generation. The text conversion is occurring concurrently with the invoice generation. Application Software: C# using Microsoft Visual Studio 2010 Ultimate. Crystal Report Writer 2011 with runtime 13_0_3 64 bit version. Targeted platform is x64; also tested as x86, and Any CPU with similar results. Microsoft .NET Framework 4.0. Microsoft Sql 2008 Issue: The software is running very slowly. The conversion of the text file is approximately six hundred fifty records per second and generation of the PDF files is approximately twelve invoices per minute. The text file to be converted is six hundred Meg with seven thousand invoices to be generated. The software was installed on three different machines from the same distribution files. The same text file was converted on each machine. The user executing the application was an administrator on each machine. The only variances were the machine and operating system. The configurations are as follows: Server: Operating System: Windows Server2008 R2 Standard 64-bit (6.1, Build7601) SP1 Service Pack: System Manufacturer: IBM System Model: System x3550 M3-[7944AC1]- BIOS: Default System BIOS Processor: Intel® Xeon® CPU E5620@ 2.4GHz (16 CPUs) Memory: 16384MB Notebook: Operating System: Windows 7 Home Premium Standard 64-bit (6.1, Build7601) System Manufacturer: Hewlett-Packard System Model: HP Pavilion dv7 Notebook PC BIOS: Default System BIOS Processor: AMD Phenom II N640 Dual-Core Processor 2.9GHz (2 CPUs) Memory: 6144MB Desktop: Operating System: Windows 7 Professional 64-bit (6.1, Build7601) SP1 System Manufacturer: Dell Inc. System Model: OptiPlex 960 BIOS: Phoenix ROM BIOS PLUS Version 1.10 A11 Processor: Intel Core™2 Quad CPU Q9650 @3.00GHZ (4 CPUs) Memory: 16384MB Processing results per machine: The applications were executed seven times with the averages being displayed below. Machine Text Records Invoices Generated Converted Per Minute Per Minute Server (1) 650 12 Notebook 980 17 Desktop 2,100 45 (1) The server is dedicated to execution of this application; no additional applications are being executed. Question: Why is the server performance so poor? What can be done to improve the speed of the server?

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  • ssh authentication with public-private key pair

    - by Rui Gonçalves
    Hi! I'm wonder if is possible to authenticate the same user with different public-private keys pairs on the same remote host. For all production servers, the public-private key pair has been generated for the same user and then exported to the backup server for allowing ssh authentication without human intervention. However, I'm having problems on some production servers, once the password prompt is always displayed. Thanks in advance for the help, Best regards!

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  • Setting Up a Virtual Sound Device To Stream Output via TCP/IP

    - by Martindale
    I'm interested in installing a custom driver / device that will open a socket (or listen) and stream audio via TCP/IP in both Windows and Linux. I would like to be able to specify this device as my "Output" for specific applications so that I can route my audio through a completely unique machine (for example, in complex Synergy setups where my headphones might be connected to one machine, but audio is being generated by another.) In Linux, I expect this to be very easy, but I anticipate having to install a custom driver in Windows.

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  • Office 2007 Installer Not Logging When Run During Startup Script

    - by bshacklett
    I'm using a startup script to deploy Microsoft Office 2007 Standard. It's not working quite right and I'm trying to find logging information for it. Unfortunately, no log is being generated by setup. I've tried configuring the log at %temp%\, C:\, %systemroot%\temp and leaving it at defaults, all to no avail. Nothing is showing up in the event logs, either. Is there anywhere else I can go to look for information on what's going on with the installer?

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  • Why is Windows 7 announcing itself as an IPv6 router?

    - by Paul
    I have a 6in4 ipv6 connection from a linux box to a broker. I use gogoc to establish the connection to the broker, and radvd to advertise the route to clients on the network. All this appears to work, the problem is that I have a Windows 7 machine on the same network, and it is advertising itself as a ipv6 router. Which it is not. This is output from radvdump: # # radvd configuration generated by radvdump 1.8.5 # based on Router Advertisement from [snip]:ea2 # received by interface eth0 # interface eth0 { AdvSendAdvert on; # Note: {Min,Max}RtrAdvInterval cannot be obtained with radvdump AdvManagedFlag on; AdvOtherConfigFlag on; AdvReachableTime 0; AdvRetransTimer 0; AdvCurHopLimit 0; AdvDefaultLifetime 1800; AdvHomeAgentFlag off; AdvDefaultPreference medium; AdvSourceLLAddress on; AdvLinkMTU 1500; }; # End of interface definition # # radvd configuration generated by radvdump 1.8.5 # based on Router Advertisement from [snip]:1121 # received by interface eth0 # interface eth0 { AdvSendAdvert on; # Note: {Min,Max}RtrAdvInterval cannot be obtained with radvdump AdvManagedFlag off; AdvOtherConfigFlag off; AdvReachableTime 0; AdvRetransTimer 0; AdvCurHopLimit 64; AdvDefaultLifetime 1800; AdvHomeAgentFlag off; AdvDefaultPreference medium; AdvLinkMTU 1280; AdvSourceLLAddress on; prefix [snip]::/64 { AdvValidLifetime 86400; AdvPreferredLifetime 14400; AdvOnLink on; AdvAutonomous on; AdvRouterAddr off; }; # End of prefix definition }; # End of interface definition And I end up with two routes: $ ip -6 route [snip]::/64 dev eth0 proto kernel metric 256 expires 86117sec fe80::/64 dev eth0 proto kernel metric 256 default via [snip]:ea2 dev eth0 proto kernel metric 1024 expires 1492sec default via [snip]:1121 dev eth0 proto kernel metric 1024 expires 1506sec The ea2 route is to the Windows7 box. It doesn't have a router installed, and doesn't have any tun/tap interfaces. I can't see why it is doing this. I could disable ipv6 on it, but I want it to be a client, not a router. Update: The IP Helper service (Provides tunnel connectivity using IPv6 transition technologies (6to4, ISATAP, Port Proxy, and Teredo), and IP-HTTPS. If this service is stopped, the computer will not have the enhanced connectivity benefits that these technologies offer.) seems to be the culprit, as if it is stopped, I don't get the routes advertised. So my question is now more specifically "why is IP Helper announcing routes?".

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  • Save Word document to clipboard

    - by uwe
    I often come into the following situation: Get an email with attachment in MS Outlook Open that attachment in MS Word Starting to edit the document in MS Word Start replying to the email in MS Outlook Getting the edited document into my reply I have to save that file to disk and then drag it as attachment. I would think of a short way to get that document as attachement in the newly generated email. Is there a way to implement a save location as clipboard or just a copy to clipboard (the document, not the content)?

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  • Identify Executable Creating Network Traffice

    - by jeffspost
    I've got some application on my Windows XP machine that is generating an HTTP request to aaronsw.com every half hour. We've trapped the packets in wireshark, but wireshark doesn't tell what application generated the packets. Is there any utility that looks at network traffic AND tells what executable produced the traffic?

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  • .bat script doesn't work by using window scheduler

    - by user332640
    i created a .bat script to perform daily folder compression. it is working fine when i double click the .bat file. However, it doesnt work when i include it in window scheduler. Below is the script: rem **************************** rem ** To create back up file ** rem **************************** "C:\Program Files\WinZip\WINZIP32.EXE" -a -r -p "E:\Backup\Daily\sst.zip" "P:\SST\*.*" When i run it via window scheduler, the status is always "running" but nothing is generated. Can someone explain the situation?

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  • SubjectAltNames supported on IIS 5 ?

    - by traff
    I just generated a certificate with a CN and two subject alternative names (3 differents fqdn) and i always get a handshake failure, whatever the ssl version i use: 14177:error:1407F0E5:SSL routines:SSL2_WRITE:ssl handshake failure:s2_pkt.c:428: 14176:error:1409E0E5:SSL routines:SSL3_WRITE_BYTES:ssl handshake failure:s3_pkt.c:530: I'm now asking myself if IIS 5 on win2000 does really support those certificates, any ideas ? Thanks in advance.

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  • Add Machine Key to machine.config in Load Balancing environment to multiple versions of .net framework

    - by davidb
    I have two web servers behind a F5 load balancer. Each web server has identical applications to the other. There was no issue until the config of the load balancer changed from source address persistence to least connections. Now in some applications I receieve this error Server Error in '/' Application. Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Web.HttpException: Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster. Source Error: The source code that generated this unhandled exception can only be shown when compiled in debug mode. To enable this, please follow one of the below steps, then request the URL: Add a "Debug=true" directive at the top of the file that generated the error. Example: or: 2) Add the following section to the configuration file of your application: Note that this second technique will cause all files within a given application to be compiled in debug mode. The first technique will cause only that particular file to be compiled in debug mode. Important: Running applications in debug mode does incur a memory/performance overhead. You should make sure that an application has debugging disabled before deploying into production scenario. How do I add a machine key to the machine.config file? Do I do it at server level in IIS or at website/application level for each site? Does the validation and decryption keys have to be the same across both web servers or are they different? Should they be different for each machine.config version of .net? I cannot find any documentation of this scenario.

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  • Exchange 2010 Discovery Search Fails

    - by ITGuy24
    When ever I run an Exchange 2010 SP1 Discovery Search I get the following error: "Search failed as the results link to the target mailbox '[email protected]' couldn't be generated." I have checked to ensure the discovery mailbox is enabled I created a new Discovery mailbox. I get the same error with both Mailboxes. The user account I am using to run the search is a member of the "Discovery Management" security group. I get the same error whether I use the Shell or the ECP to run the search

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