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Articles indexed Thursday October 31 2013

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• Setup IPv4 local on IPv6 VPS

  - by A.D.

  I have a dedicated server running multiple IPv6 only OpenVZ containers. I want them to be able to communicate with the IPv4 internet, but I realized that isn't going to be possible with IPv6 only. So they need to have an IPv4 address as well, not sure if a local address will work for it, but pretty sure it should. I added 169.254.1.100 in the container .conf file, but when I try to start it, I get this : Adding IP address(es): (the IPv6 address) 169.254.1.100 arpsend: 169.254.1.100 is detected on another computer : 00:04:9b:f2:b0:00 vps-net_add WARNING: arpsend -c 1 -w 1 -D -e 169.254.1.100 eth0 FAILED I did a lot of research, and searched serverfault before posting this, but found nothing relating to this.

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• Win 8.1 Hyper-v Full Screen and VPN problems

  - by tr0users

  I need to connect to my office using Cisco VPN software (RSA). Once connected all my internet traffic goes through the employer's VPN and this prevents me from listening to spotify. As a way around this I created a Win 2012 VM that I run in hyper-v from my Windows 8.1 Client. First I RDP to the VM, then I connect to the VPN. This forces the RDP session between my host laptop and the VM to close. I then open the hyper-v manager and double-click my VM to get a connection back (not great because I don't get the use of copy & paste this way). Previously when I opened my VM this way I would have full screen. I'm using a 1920x1080 monitor. Today when I re-open my connection to the VM it is displayed in a window that uses maybe 75% of the full screen. I have tried the menu option View\Full Screen Mode only centres the screen and apply black borders around the outside. Could anyone please suggest how I may solve the VPN or Full Screen problems? Thanks Rob.

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• "This computer has dynamically assigned IP addresses" error when installing Active Directory Domain Controller

  - by smhnaji

  This is a working Windows Server 2008 that I should install Active Directory on it. I found http://www.howtogeek.com/99323/ and followed the steps. After Additional Domain Controller Options, I'm asked the question "This computer has dynamically assigned IP addresses". As I see, the message states that Dynamic IP addressing has been used for the server, while this is wrong. When I come to Network And Sharing Center, and click on Local Area Connections - Properties - Internet Protocol Version 4 (TCP/IPv4) - Properties, I see that the main IP address (as well as DNS Server) and also all other IP addresses are assigned statically. So it should be OK. I cannot believe any server using dynamic IP(s)! Note: No IPv6 has been set for the server. Please tell me why the error is given and which of the options available, should I choose? Note that it's a production server and is working with many users in WORKGROUP. No change should be affected nor to the IPs, neither to users connecting to the server.

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• Ports do not open after rules appended in iptables

  - by user2699451

  I have a server that I am trying to setup for OpenVPN. I have followed all the steps, but I see that when I try to connect to it in Windows, it doesn't allow me, it just hangs on connecting, so I did a nmap scan and I see that port 1194 is not open so naturally I append the rule to open 1194 with: iptables -A INPUT -i eth0 -p tcp --dport 1194 -j ACCEPT followed by service iptables save and service iptables restart which all executed successfully. Then I try again, but it doesn't work and another nmap scan says that port 1194 is closed. Here is the iptables configuration: # Generated by iptables-save v1.4.7 on Thu Oct 31 09:47:38 2013 *nat :PREROUTING ACCEPT [27410:3091993] :POSTROUTING ACCEPT [0:0] :OUTPUT ACCEPT [5042:376160] -A POSTROUTING -s 10.8.0.0/24 -o eth0 -j MASQUERADE -A POSTROUTING -s 10.8.0.0/24 -o eth0 -j MASQUERADE -A POSTROUTING -o eth0 -j MASQUERADE -A POSTROUTING -s 10.8.0.0/24 -o eth0 -j MASQUERADE -A POSTROUTING -s 10.8.0.0/24 -o eth0 -j MASQUERADE -A POSTROUTING -j SNAT --to-source 41.185.26.238 -A POSTROUTING -s 10.8.0.0/24 -o eth0 -j MASQUERADE -A POSTROUTING -s 10.8.0.0/24 -o eth0 -j MASQUERADE -A POSTROUTING -s 10.8.0.0/24 -o eth0 -j MASQUERADE COMMIT # Completed on Thu Oct 31 09:47:38 2013 # Generated by iptables-save v1.4.7 on Thu Oct 31 09:47:38 2013 *filter :INPUT ACCEPT [23571:2869068] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [27558:3656524] :vl - [0:0] -A INPUT -p tcp -m tcp --dport 5252 -m comment --comment "SSH Secure" -j ACCEPT -A INPUT -p icmp -m icmp --icmp-type 8 -m state --state NEW,RELATED,ESTABLISHED -$ -A INPUT -i lo -j ACCEPT -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT -A INPUT -p tcp -m tcp --dport 22 -m comment --comment "SSH" -j ACCEPT -A INPUT -p tcp -m tcp --dport 80 -m comment --comment "HTTP" -j ACCEPT -A INPUT -p tcp -m tcp --dport 8080 -m comment --comment "HTTPS" -j ACCEPT -A INPUT -p tcp -m tcp --dport 443 -m comment --comment "HTTP Encrypted" -j ACCEP$ -A INPUT -i eth0 -p tcp -m tcp --dport 1723 -j ACCEPT -A INPUT -i eth0 -p gre -j ACCEPT -A INPUT -p udp -m udp --dport 1194 -j ACCEPT -A FORWARD -i ppp+ -o eth0 -j ACCEPT -A FORWARD -i eth0 -o ppp+ -j ACCEPT -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT -A FORWARD -s 10.8.0.0/24 -j ACCEPT -A FORWARD -j REJECT --reject-with icmp-port-unreachable -A OUTPUT -p icmp -m icmp --icmp-type 0 -m state --state RELATED,ESTABLISHED -j A$ COMMIT # Completed on Thu Oct 31 09:47:38 2013 and my nmap scan from: localhost: nmap localhost Starting Nmap 5.51 ( http://nmap.org ) at 2013-10-31 09:53 SAST Nmap scan report for localhost (127.0.0.1) Host is up (0.000011s latency). Other addresses for localhost (not scanned): 127.0.0.1 Not shown: 996 closed ports PORT STATE SERVICE 22/tcp open ssh 25/tcp open smtp 443/tcp open https 1723/tcp open pptp Nmap done: 1 IP address (1 host up) scanned in 0.06 seconds remote pc: nmap [server ip] Starting Nmap 6.00 ( http://nmap.org ) at 2013-10-31 09:53 SAST Nmap scan report for rla04-nix1.wadns.net (41.185.26.238) Host is up (0.025s latency). Not shown: 858 filtered ports, 139 closed ports PORT STATE SERVICE 22/tcp open ssh 443/tcp open https 8008/tcp open http Nmap done: 1 IP address (1 host up) scanned in 15.70 seconds So, I do not know what is causing this, any assistance will be appreciated! UPDATE AFTER FIRST ANSWER::: [root@RLA04-NIX1 ~]# iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT [root@RLA04-NIX1 ~]# iptables -A FORWARD -s 10.8.0.0/24 -j ACCEPT [root@RLA04-NIX1 ~]# iptables -A FORWARD -j REJECT [root@RLA04-NIX1 ~]# iptables -t nat -A POSTROUTING -s 10.8.0.0/24 -o eth0 -j MASQUERADE [root@RLA04-NIX1 ~]# service iptables save iptables: Saving firewall rules to /etc/sysconfig/iptables:[ OK ] [root@RLA04-NIX1 ~]# service iptables restart iptables: Flushing firewall rules: [ OK ] iptables: Setting chains to policy ACCEPT: filter nat [ OK ] iptables: Unloading modules: [ OK ] iptables: Applying firewall rules: [ OK ] [root@RLA04-NIX1 ~]# lsof -i :1194 -bash: lsof: command not found iptables -L -n Chain INPUT (policy ACCEPT) target prot opt source destination ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:5252 /* SSH Secure */ ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmp type 8 state NEW,RELATED,ESTABLISHED ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 state RELATED,ESTABLISHED ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:22 /* SSH */ ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:80 /* HTTP */ ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:8080 /* HTTPS */ ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:443 /* HTTP Encrypted */ ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:1723 ACCEPT 47 -- 0.0.0.0/0 0.0.0.0/0 ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:1194 Chain FORWARD (policy ACCEPT) target prot opt source destination ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 state RELATED,ESTABLISHED ACCEPT all -- 10.8.0.0/24 0.0.0.0/0 REJECT all -- 0.0.0.0/0 0.0.0.0/0 reject-with icmp-port-unreachable ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 state RELATED,ESTABLISHED ACCEPT all -- 10.8.0.0/24 0.0.0.0/0 REJECT all -- 0.0.0.0/0 0.0.0.0/0 reject-with icmp-port-unreachable Chain OUTPUT (policy ACCEPT) target prot opt source destination ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmp type 0 state RELATED,ESTABLISHED Chain vl (0 references) target prot opt source destination [root@RLA04-NIX1 ~]# nmap localhostt Starting Nmap 5.51 ( http://nmap.org ) at 2013-10-31 11:13 SAST remote pc nmap [server ip] Starting Nmap 6.00 ( http://nmap.org ) at 2013-10-31 11:11 SAST Nmap scan report for rla04-nix1.wadns.net (41.185.26.238) Host is up (0.020s latency). Not shown: 858 filtered ports, 139 closed ports PORT STATE SERVICE 22/tcp open ssh 443/tcp open https 8008/tcp open http Nmap done: 1 IP address (1 host up) scanned in 4.18 seconds localhost nmap localhost Starting Nmap 5.51 ( http://nmap.org ) at 2013-10-31 11:13 SAST Nmap scan report for localhost (127.0.0.1) Host is up (0.000011s latency). Other addresses for localhost (not scanned): 127.0.0.1 Not shown: 996 closed ports PORT STATE SERVICE 22/tcp open ssh 25/tcp open smtp 443/tcp open https 1723/tcp open pptp Nmap done: 1 IP address (1 host up) scanned in 0.06 seconds UPDATE AFTER SCANNING UDP PORTS Sorry, I am noob, I am still learning, but here is the output for: nmap -sU [server ip] Starting Nmap 6.00 ( http://nmap.org ) at 2013-10-31 11:33 SAST Nmap scan report for [server address] ([server ip]) Host is up (0.021s latency). Not shown: 997 open|filtered ports PORT STATE SERVICE 53/udp closed domain 123/udp closed ntp 33459/udp closed unknown Nmap done: 1 IP address (1 host up) scanned in 8.57 seconds btw, no changes have been made since post started (except for iptables changes)

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• Join domain in windows 7 [on hold]

  - by Hassan Ali Khan

  I have created a domain on server machine and when i am trying to join a domain through another machine of windows 7 through the following steps: Goto MY Computer Properties - Change settings - ComputerName - click on change button - click on radio button "Domain" and enter domain name. After that when i click on OK button and enter the username and password credentials. It show me the following error: An attempt to resolve the DNS name of a domain controller in the domain being joined has failed. Please verify this client is configured to reach a DNS server that can resolve DNS names in the target domain

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• Centos + CPanel results in php always running as fgci, instead of cli, as expected

  - by quamis

  I'm having problems with a server configured by someone else. It uses CPanel, and it has Apache+PHP. For some reason, when running php -v as a user, i get "cli" as handler # php -v | head -n 1 PHP 5.3.27 (cli) (built: Oct 15 2013 16:06:48) If a make a PHP script with echo shell_exec("php -v | tail -n 1"), i get PHP 5.3.27 (cgi-fcgi) (built: Oct 15 2013 16:22:16) Why the cli/fcgi difference? I need to fix this so that scripts ran by the apache user would be running as "cli", not "fcgi". As a side-note, i'm not sure how php got installed, because in the package list i see another version installed, instead of the pne reported by php -v # rpm -qa | grep php [.... other packages...] cpanel-php53-5.3.17-5.cp1136.x86_64 rebuild_phpconf --current: /usr/local/cpanel/bin/rebuild_phpconf --current Available handlers: suphp dso fcgi cgi none DEFAULT PHP: 5 PHP4 SAPI: none PHP5 SAPI: dso SUEXEC: enabled RUID2: not installed redhat-release: # cat /etc/redhat-release CentOS release 6.4 (Final) possibly related to http://superuser.com/questions/665809/centos-6-4-running-php-for-root-as-cgi-fcgi-not-cli

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• Is an I/O benchmark made for hardware an accurate assessment of a Windows VM's performance under vSphere 5?

  - by Jeremy

  We support an enterprise application running on Windows Server 2008 R2. One of our customers has chosen to install to VMWare, and what I'm finding is that the VM's are relatively slow compared to hardware. Our product development team has advised that many VMs appear to run particularly slow on I/O benchmarks, which impact performance in production. I've tried the AttoSoft I/O benchmark and find that for smaller I/O blocks (1-32K) the VM I'm looking at is 25x slower than hardware and for larger I/O blocks (1-8MB) it's 10x slower. Is this a fair benchmark? If not, any suggestions for a fair test?

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• "Hostile" network in the company - please comment on a security setup

  - by TomTom

  I have a little specific problem here that I want (need) to solve in a satisfactory way. My company has multiple (IPv4) networks that are controlled by our router sitting in the middle. Typical smaller shop setup. There is now one additional network that has an IP Range OUTSIDE of our control, connected to the internet with another router OUTSIDE of our control. Call it a project network that is part of another companies network and combined via VPN they set up. This means: They control the router that is used for this network and They can reconfigure things so that they can access the machines in this network. The network is physically split on our end through some VLAN capable switches as it covers three locations. At one end there is the router the other company controls. I Need / want to give the machines used in this network access to my company network. In fact, it may be good to make them part of my active directory domain. The people working on those machines are part of my company. BUT - I need to do so without compromising the security of my company network from outside influence. Any sort of router integration using the externally controlled router is out by this idea So, my idea is this: We accept the IPv4 address space and network topology in this network is not under our control. We seek alternatives to integrate those machines into our company network. The 2 concepts I came up with are: Use some sort of VPN - have the machines log into VPN. Thanks to them using modern windows, this could be transparent DirectAccess. This essentially treats the other IP space not different than any restaurant network a laptop of the company goes in. Alternatively - establish IPv6 routing to this ethernet segment. But - and this is a trick - block all IPv6 packets in the switch before they hit the third party controlled router, so that even IF they turn on IPv6 on that thing (not used now, but they could do it) they would get not a single packet. The switch can nicely do that by pulling all IPv6 traffic coming to that port into a separate VLAN (based on ethernet protocol type). Anyone sees a problem with using he switch to isolate the outer from IPv6? Any security hole? It is sad we have to treat this network as hostile - would be a lot easier - but the support personnel there is of "known dubious quality" and the legal side is clear - we can not fulfill our obligations when we integrate them into our company while they are under a jurisdiction we don't have a say in.

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• Spambot Infection Detection

  - by crankshaft

  My server has been blocked by CBL for participating in curtwail spambot. Initially we suspected that it was coming from a PC and not from the server, but the router is blocking all packets on 25 except those coming from the server. I have just executed the tcpdump command and every 5 minutes I see a flurry of activity on port 25 that is very suspicious and I am sure that there is some process running on the server: 13:02:30.027436 IP exprod5og110.obsmtp.com.53803 > ubuntu.local.smtp: Flags [S], seq 171708781, win 5744, options [mss 1436,sackOK,TS val 3046699707 ecr 0,nop,wscale 2], length 0 I have stopped postfix, and yet there is still traffic on port 25 above. But how can I find what process is actually communicating on port 25 as it only rund for a few seconds and so for example lsof -i :25 will never catch it. I have been working on this now for 2 days, it is a live server and I cannot simply shut it down, any suggestion on how I can detect the source of this email bot process ?

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• How do I stop someone from saturating my line & wasting CPU cycles

  - by JoshRibs

  My web host shows inbound & outbound traffic with mrtg. I have a steady 3.5mbps inbound traffic from Nigeria. Even assuming the source IPs & destination ports are blocked with Iptables & verifying nothing is listening on those ports, will the traffic still always pass through the switch & "get" to my server (where my server wastes CPU cycles "dropping" the packets)? Assuming I was setup with a hardware firewall, the traffic would still show in mrtg assuming the firewall is behind the switch? So is there any way to stop someone from saturating your 100mbps line, if they also have a 100mbps line? Other than filing an abuse complaint with the kind folks in Nigeria?

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• google sitemap generator installation selinux

  - by adnan

  when i trying to install google sitemap generator i received this error Change security context of to system_u:object_r:httpd_modules_t install: WARNING: ignoring --context (-Z); this kernel is not SELinux-enabled Program files successfully copied. ./install.sh: line 488: 14284 Segmentation fault "$DEST_DIR/$BIN_DIR/$DAEMON_BIN" update_setting $update_setting_flags "apache_conf=$APACHE_CONF" "apache_group=$APACHE_GROUP" > /dev/null after choosing the submiting file settings i tried to unistall it & excute this getenforce try again but the same problem when i enter this dir /etc/sysconfig/selinux. it is not contain the selinux file my os centos 6 X86_64

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• Citrix Secure Gateway not redirecting to login URL

  - by Dave

  We have an older setup for XenApp - users log in through Citrix Secure Gateway running on a windows box. (We hope to start using a NetScaler soon.) Earlier today, connections to https://citrix.company.com/ starting throwing up a 503 error page, instead of redirecting to https://citrix.company.com/Citrix/XenApp/ If you go directly to the /Citrix/Xenapp/ URL, the user is properly directed to the login page, and can launch apps. We've restarted the service, and rebooted the server. We haven't yet tried uninstalling and reinstalling the software. Before we do this, I'm looking for ideas as to how we can get the redirect working again without a fairly major outage window. To make things more interesting, many of our users have Citrix Receiver installed, also pointed at https://citrix.company.com/. Receiver makes itself the default launcher for ICA files, and gives a connection error when it tries to load apps - probably because of the same non-functional rediect?

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• How to change .htaccess file to work right in localhost?

  - by Manolo Salsas

  I have this snippet code in my .htaccess file to prevent users from hotlinking the server's images: RewriteEngine On RewriteCond %{HTTP_REFERER} ^$ [OR] RewriteCond %{HTTP_REFERER} !^http://(www.)?itransformer.es/.*$ [NC] RewriteRule \.(gif|jpe?g|png|wbmp)$ http://itransformer.es [R,L] Of course, it is not working in my localhost, but don't know how to achieve it. My guess is that I should change the domain name with any wildcard. Any idea? Update I've finally found out the answer thanks to @Chris solution: RewriteCond %{HTTP_REFERER} ^$ [OR] RewriteCond %{HTTP_REFERER} ^https?://%{HTTP_HOST}/.*/usuarios/.*$ [NC] RewriteRule \.(gif|jpe?g|png|wbmp)$ http://%{HTTP_HOST} [R=301,L] The /usuarios/ directory is because I only want to deny direct access to files inside this directory. Update2 For some reason, it doesn't work again. Finally I think that I found out a better solution: RewriteCond %{REQUEST_FILENAME} .*/usuarios/.*$ [NC] RewriteRule \.(gif|jpe?g|png|wbmp)$ http://%{HTTP_HOST} [R=301,L] I say better solution because what I want to deny is direct access to a file (image). Update3 Well, after a while I discovered above wasn't exactly what I wanted, so the next is definitive: RewriteCond %{HTTP_REFERER} ^$ [OR] RewriteCond %{HTTP_REFERER} !^https?://itransformer.*$ [NC] RewriteRule /usuarios/.*\.(gif|jpe?g|png|wbmp)$ - [R=404,L] Just two doubts: If I change the above to: RewriteCond %{HTTP_REFERER} ^$ [OR] RewriteCond %{HTTP_REFERER} !^https?://%{HTTP_HOST}.*$ [NC] RewriteRule /usuarios/.*\.(gif|jpe?g|png|wbmp)$ - [R=404,L] it doesn't work. I don't understand why, because %{HTTP_HOST} is equal to itransformer in my localhost, and it should work. The second doubt is why is shown the default 404 page and not my custom page (that is shown in all other 404 responses).

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• How to Apache SSL proxy to openerp 7 running in VM?

  - by Johnbritto

  I have installed openerp v7 in an ubuntu 12.04 Virtual machine from launchpad.i.e server, web, addons. I configured SSL reverse proxy on virtual machine and my configuration for virtual host *:443 are ServerName openerp.mydomain.net ServerAdmin openerp@localhost SSLEngine on SSLCertificateFile /etc/ssl/openerp/server.crt SSLCertificateKeyFile /etc/ssl/openerp/server.key ProxyRequests Off ProxyPreserveHost On <Proxy *> Order deny,allow Allow from all </Proxy> ProxyVia On ProxyPass / http://172.16.150.14:8069/ ProxyPassReverse / http://172.16.150.14:8069/ RequestHeader set "X-Forwarded-Proto" "https" # Fix IE problem (httpapache proxy dav error 408/409) SetEnv proxy-nokeepalive 1 </VirtualHost> on host, I have configured apache reverse proxy for my subdomain in vhost_ssl.conf as SSLEngine On SSLProxyEngine On ProxyRequests Off ProxyPreserveHost On <Proxy *> Order deny,allow Allow from all </Proxy> ProxyPass / https://172.16.150.14/ ProxyPassReverse / https://172.16.150.14/ SetEnv proxy-nokeepalive 1 <Location /> Order allow,deny Allow from all </Location> I have set 172.16.150.14 on netrpc and xmlrcs interfaces in openerp-server.conf. Now, when I access https:// openerp.mydomain.net from Girefox and chrome browser..I get http:// openerp.mydomain.net%2C%20openerp.mydomain.net/?db=testingdb which makes 404. But when i access URL from IE 9, the URL https:// openerp.mydomain.net works ok .. secondly if i change the parameter list_db= false, then the links works as expected.. Kindly let me know what is creating bottleneck with URL redirect to http://openerp.mydomain.net, openerp.myydomain.net/?db=testdb on Firefox and chrome. i am struck here doing troubleshooting with the URL to work.

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• Git clone/pull across local network

  - by Tom Sarduy

  I'm trying to clone/pull a repository in another PC using Ubuntu Quantal. I have done this on Windows before but I don't know what is the problem on ubuntu. I tried these: git clone file:////pc-name/repo/repository.git git clone file:////192.168.100.18/repo/repository.git git clone file:////user:pass@pc-name/repo/repository.git git clone smb://c-pc/repo/repository.git git clone //192.168.100.18/repo/repository.git Always I got: Cloning into 'intranet'... fatal: '//c-pc/repo/repository.git' does not appear to be a git repository fatal: The remote end hung up unexpectedly or fatal: repository '//192.168.100.18/repo/repository.git' does not exist More: The other PC has username and password Is not networking issue, I can access and ping it. I just installed git doing apt-get install git (dependencies installed) I'm running git from the terminal (I'm not using git-shell) What is causing this and how to fix this? Any help would be great! UPDATE I have cloned the repo on Windows using git clone //192.168.100.18/repo/intranet.git without problems. So, the repo is accessible and exist! Maybe the problem is due user credentials?

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• Best cloud based IT Systems management services out there?

  - by Ryk

  Our startup organisation is growing fast in 2 different office locations. That brings new challenges and headaches. Our entire company is cloud based, and I am looking for a good product to manage our remote systems. Currently we do not have on-site AD servers, we are using the Windows Azure AD services, so cannot rely on group policies at this stage. I would like to be able to achieve the following: (they are all laptops) Remote Desktop Support Patch management Lock down software on machines (restrict them) Monitor and manage systems Other benefits would be good, but if I can achieve the ones listed above, it will go a long way. We have a combination of Windows 7 pro & Windows 8 & 8.1 machines. I am currently using Windows Intune, but it is really limited. Really just a glorified patch enforcer. Thank you in advance to your help.

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• What if I dismount main volume, where the Windows is installed

  - by ST3

  I'm writing permanent file deletion tool and accessing raw disk clusters. Since Windows Vista writing into raw disk is a bit more complicated. I have tried on my external data device first and worked fine, however one of the steps was dismounting of the volume, not sure if it is a good idea to dismount main volume where the Windows are. Want to ask that is possible consequences and if it safe/unsafe/very unsafe.

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• How can I tell what command is running on the remote end of an ssh connection?

  - by user268385

  Tl;dr - how do I find the name of the command (eg $BASH_COMMAND) running on the remote end of an ssh connection? ... My example setup is two tmux vertical panes, LH pane runs a local vim session with vertical split, RH pane runs an ssh session running vim, again with a vertical split. Using tmux-navigator I can navigate from left to right over the first 3 vim buffers, but the 4th (far right hand one) is inaccessible. The reason for this is that tmux-navigator tests the value of 'pane_current_command' and compares it to 'vim' before deciding which keystrokes to dispatch. On the right hand tmux pane, the current command is 'ssh' and not 'vim'. What I want to do is test for (pane_current_command =~ 'ssh'), and if so, examine the command that is running on the far side of the connection? I cannot find a way to get hold of this, so any suggestions would be welcome? For information, the problem is almost the same as this one, but without the nested tmux sessions: https://github.com/christoomey/vim-tmux-navigator/issues/12

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• Hiding a column from a pivot table without removing it from the chart

  - by Simon

  I have a pivot table with two columns: number of users who visited a website (impressions) and number of users who registered on the site (regs). The rows are for dates. I want to visualize the percentage of users who registered after visiting the site. Thus, I have the number of users for each cell as a value field, displaying it as percentage of impressions. Generating a pivot chart from the table, impressions and regs are plotted over date as a percentage of impressions. This means there is one line at 100% for impressions (always 100% of itself) and the graph for registrations below that. I'd like to remove the line for impressions, but when I set a filter to do so, registrations vanish as well, since the column for impressions is filtered from the pivot chart as well, turning the value field invalid. How can I just show registrations as a percentage of impressions in the chart?

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• Registry changes not being preserved (unwanted restore)

  - by W Hofmeyr

  Changes made to system or program settings which are stored in the registry are restored to a previous values after a reboot. This question was also posted Each time I do restart - Windows 8 resets my settings/registry to some state The "solution" was to create a new user - this is not an option as the user is defined by the domain server. Does anyone know what is causing the resetting and what a proper solution is?

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• Cascading KVM switches

  - by einpoklum

  I have a not-so-small number of computers (say, 5) which I want to access with a single keyboard, USB and monitor. I can get an 8-port KVM switch, which is a pretty expensive piece of hardware; however, in theory, I should be able to cascade KVM switches: Have one 4-port KVM switch between 2 other KVMs (a 2-port and a 4-port). Is this doable (with typical off-the-shelf switches and cables)? Has anyone had experience doing this? Note: I'm interested in USB-only for the keyboard and mouse, and either VGA or DVI for the display. Audio and PS/2 connections are irrelevant for me..

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• How to isolate Mac OS X installers (e.g. Mountain Lion, Mavericks)?

  - by solitude

  I've upgraded from Snow Leopard to Mountain Lion before. Now, I'm going to Mavericks. I'm tired of downloading these big installers every time I have to use them. The installers are deleted after using them as far as my experience is concerned. Where can I find these installers after downloading them from the App Store so that I can copy them and use them in the future? Looking up over the internet did not help.

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• How to backup data on debian vps to dropbox?

  - by IBr

  I have really simple private VPS with some webpages and music server. I want to backup some configs and some scripts to dropbox or similar service. Server has no gui (except simple ssh X forwarding, which is neither convenient for constant usage and does not provide full desktop) everything is controlled through ssh. So my question would is it possible to setup dropbox client for command line use? How? Is there any alternatives for dropbox, which would have command line clients? Also is it possible to incorporate backup into script for cron job?

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• Apple Mac OS X Mavericks inside Virtual Box

  - by John Sonderson

  I have a few questions regarding Mac OS X and OS virtualization. A. Given all the legal restrictions imposed by Apple on Apple products, I would like to know whether it is legal to install the new and freely downloadable Apple Mac OS X Mavericks inside Oracle Virtual Box. B. What about older OS X versions such as Mountain Lion? C. How many machines can I install it on. What if I don't use the Mac to which the OS is downloaded but only use it on Virtual Box, and prefer to, say, install Linux on the Mac computer so that it doesn't become unusable due to the single user license policy and me running the OS on Windows 7 within Virtual Box? D. I have a PC running Windows 7 but would like to get the OS off a second had Mac I'm planning to purchase for this purpose. How must we proceed to copy the OS to an ISO so that I can install it on Windows 7? I am unfamiliar with Macs and do not know what software to use for the purpose, nor where the OS is downloaded to (as an ISO, .app executable, .gz or .zip file or whatever). If anyone could provide some guidance with the process I would sincerely appreciate it. Thanks.

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• Install perl module with dependencies

  - by AlxAlx

  I'm trying to install a Perl module like this : pi@raspbmc:~$ sudo cpan HTTP::Date Cpan get the file Checksum is ok uncompressed successfully But I got this error : Using Tar:/bin/tar xf "HTTP-Date-6.02.tar": Couldn't untar HTTP-Date-6.02.tar: 'Cannot allocate memory' Any ideas ? My filesystem : Filesystem Size Used Avail Use% Mounted on /dev/mmcblk0p2 15G 2.1G 12G 16% / /dev/mmcblk0p1 69M 8.1M 61M 12% /boot EDIT : I tryed curl -L http://cpanmin.us | perl - App::cpanminus But when I do sudo cpanm HTTP::Date I got this error : -bash: cpanm: command not found

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