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Articles indexed Wednesday June 11 2014

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• Roughly, what percentage of users will reach changed DNS?

  - by user3722246

  If my main server go offline for some reason for +1hrs, I'm planning to make a DNS change so users will access secondary server. It is not a perfect solution to decrease downtime but it is simple and would work. I'm not sure about its usefulness. So I have a question. If I'm going to make a DNS change to an A record for my domain (changing from one IP to another), what percentage of users are moved over to the new info in 2hrs? (roughly) I know this is a vague question and there are lots of variables but any input is welcomed because I had painful downtime experiences and don't want to experience it again. Thanks

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• MaxStartups and MaxSessions configurations parameter for ssh connections?

  - by Webby

  I am copying the files from machineB and machineC into machineA as I am running my below shell script on machineA. If the files is not there in machineB then it should be there in machineC for sure so I will try copying the files from machineB first, if it is not there in machineB then I will try copying the same files from machineC. I am copying the files in parallel using GNU Parallel library and it is working fine. Currently I am copying 10 files in parallel. Below is my shell script which I have - #!/bin/bash export PRIMARY=/test01/primary export SECONDARY=/test02/secondary readonly FILERS_LOCATION=(machineB machineC) export FILERS_LOCATION_1=${FILERS_LOCATION[0]} export FILERS_LOCATION_2=${FILERS_LOCATION[1]} PRIMARY_PARTITION=(550 274 2 546 278) # this will have more file numbers SECONDARY_PARTITION=(1643 1103 1372 1096 1369 1568) # this will have more file numbers export dir3=/testing/snapshot/20140103 find "$PRIMARY" -mindepth 1 -delete find "$SECONDARY" -mindepth 1 -delete do_Copy() { el=$1 PRIMSEC=$2 scp david@$FILERS_LOCATION_1:$dir3/new_weekly_2014_"$el"_200003_5.data $PRIMSEC/. || scp david@$FILERS_LOCATION_2:$dir3/new_weekly_2014_"$el"_200003_5.data $PRIMSEC/. } export -f do_Copy parallel --retries 10 -j 10 do_Copy {} $PRIMARY ::: "${PRIMARY_PARTITION[@]}" & parallel --retries 10 -j 10 do_Copy {} $SECONDARY ::: "${SECONDARY_PARTITION[@]}" & wait echo "All files copied." Problem Statement:- With the above script at some point I am getting this exception - ssh_exchange_identification: Connection closed by remote host ssh_exchange_identification: Connection closed by remote host ssh_exchange_identification: Connection closed by remote host And I guess the error is typically caused by too many ssh/scp starting at the same time. That leads me to believe /etc/ssh/sshd_config:MaxStartups and MaxSessions is set too low. But my question is on which server it is pretty low? machineB and machineC or machineA? And on what machines I need to increase the number? On machineA this is what I can find - root@machineA:/home/david# grep MaxStartups /etc/ssh/sshd_config #MaxStartups 10:30:60 root@machineA:/home/david# grep MaxSessions /etc/ssh/sshd_config And on machineB and machineC this is what I can find - [root@machineB ~]$ grep MaxStartups /etc/ssh/sshd_config #MaxStartups 10 [root@machineB ~]$ grep MaxSessions /etc/ssh/sshd_config #MaxSessions 10

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• Cobbler 2.2.2 problems

  - by Peter

  I have setup a dedicated LAN for Cobbler tests. My setup is: Cobbler server: openSUSE 12.3, cobbler 2.2.2 (from openSUSE repos) Imported distros: Centos 6.5, Red Hat 6.5, Red Hat 7.0, openSUSE 13.1 Target Machine: VMs in a Windows 7 Virtualbox Systems provisioning works OK, but I have some problems. The first one is that cobbler does not honor the "pxe_just_once: 1" setting. When the setup of the target OS is finished, after the reboot the target systems continues to PXE boot! The second problem is that the target server is not correctly configured! See my setup: cobbler system report --name=test Name : test TFTP Boot Files : {} Comment : Fetchable Files : {} Gateway : 192.168.0.1 Hostname : testcob1.example.com Image : IPv6 Autoconfiguration : False IPv6 Default Device : Kernel Options : {} Kernel Options (Post Install) : {} Kickstart : <<inherit>> Kickstart Metadata : {} LDAP Enabled : False LDAP Management Type : authconfig Management Classes : [] Management Parameters : <<inherit>> Monit Enabled : False Name Servers : ['192.168.0.1', '8.8.8.8'] Name Servers Search Path : [] Netboot Enabled : False Owners : ['admin'] Power Management Address : Power ID : Power Password : Power Management Type : ipmitool Power Username : Profile : RHEL-6.5-x86_64 Proxy : <<inherit>> Red Hat Management Key : <<inherit>> Red Hat Management Server : <<inherit>> Repos Enabled : False Server Override : <<inherit>> Status : testing Template Files : {} Virt Auto Boot : <<inherit>> Virt CPUs : <<inherit>> Virt Disk Driver Type : <<inherit>> Virt File Size(GB) : <<inherit>> Virt Path : <<inherit>> Virt RAM (MB) : <<inherit>> Virt Type : <<inherit>> Interface ===== : eth0 Bonding Opts : Bridge Opts : DHCP Tag : DNS Name : Master Interface : Interface Type : IP Address : 192.168.0.200 IPv6 Address : IPv6 Default Gateway : IPv6 MTU : IPv6 Secondaries : [] IPv6 Static Routes : [] MAC Address : Management Interface : True MTU : Subnet Mask : 255.255.255.0 Static : True Static Routes : [] Virt Bridge : So, although I have setup the hostname and the network interface of the target system, after the setup, the hostname is set to localhost.localdomain and eth0 is configured as a DHCP not static! How can I find the problem and fix it? Note that I have synced and restarted cobbler a couple of times, but the problems persists.

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• Updating wordpress in a multi-node environment

  - by Peter

  I'm finding this very tricky in a multi node environment, with code under revision control. AKA. multiple frontends and single database. I have a deployment process that pushes a git repo to the servers, but obviously if I update Wordpress from within the admin panel, it will update the files to one FE. Then I would need to copy over the new files to the other FE nodes. Plus, whenever these changes are written when Wordpress updates on a node, it writes code into the git repo. As such, it then breaks the auto deploys that perform 'git pulls', as it then has untracked changes and refuses to pull in new deploys unless manually intervened. How does one easily keep Wordpress updated in a multi node (load balanced) environment?

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• Apache HTTP Not Working When SSL Enabled

  - by dominic7il

  I've got a very bizarre problem in that after enabling SSL support in Apache I'm only able to access my site via SSL and not through http as well. I can confirm that Apache is definitely listening on both ports 80 and 443 (accdording to netstat). Additionally the Apache access logs are showing the requests - it's just that going in through http results in a timeout and I'm never actually able to reach the content. Like I said going through https works. Here is my httpd.conf: http://pastebin.com/kG2dPjJ2 and here is my httpd-ssl.conf: http://pastebin.com/thqvjgGJ Can anyone spot any issues with those configurations? or Have any suggestion at all? I've searched and searched but there appear to be very few people who have experienced the same. Also worth mentioning that I did a comparision between those configurations and those of a working set up and I couldn't spot anything.

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• The script not working as expected files dump path

  - by user3319390

  I have a script needs to be dump matching cname from my file contains and then matching scode to dump file to $cname/$year/$month/$day/ into files like access and error logs #!/bin/sh #base_dir="/home/vizion/Desktop" path="/home/vizion/Desktop/adn_DF9D_20140515_0005.log" name=$(basename "$path" ".log") for x in *.log; do year=${x:9:4}; month=${x:13:2}; day=${x:15:2}; done while read -r line do cname=$(echo ${line} | awk '{split($7,c,"/"); print c[3]}') scode=$(echo ${line} | awk -F"[ ]" '{print $9}') [[ ! -d "$cname/$year/$month/$day" ]] && mkdir -p "$cname/$year/$month/$day/" [[ ( ${scode} -ge 200 ) && ( ${scode} -le 399 ) ]] && { # [[ ! -d "$cname/$year/$month/$day" ]] && mkdir -p "$cname/$year/$month/$day/" echo ${line} >> /home/vizion/Desktop/$cname/$year/$month/$day/${cname}_${name}_access.log } [[ ( ${scode} -ge 400 ) && ( ${scode} -le 599 ) ]] && { [[ ! -d "$cname/$year/$month/$day" ]] && mkdir -p "$cname/$year/$month/$day" echo ${line} >> ${cname}_${name}_error.log } done < $path i am able to filter logs but not not dumping the exact location It's going other locations suggest to me correction in script

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• Why do I get different openssl versions?

  - by CoCoMonk

  I'm trying to check if I have the latest OpenSSL, my main concern in the heartbleed bug. I tried 2 commands: openssl version yum info openssl openssl version output OpenSSL 1.0.1e-fips 11 Feb 2013 yum info openssl output Installed Packages Name : openssl Arch : x86_64 Version : 1.0.1e Release : 16.el6_5.14 ... I have a couple of questions: Why do I get different versions from these 2 commands? How do I check the heartbleed vulnerability without having the 443 port open?

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• Revover original email from Sendmail log

  - by Xavi Colomer

  I have a website the contact form has been failing silently for two weeks (Wordpress + Contact form 7). Apparently updating to Contact Form 7 made the assigned email to fail [email protected], I also tested with [email protected] and it also failed until I tried with gmail and it finally worked. Apparently @telefonica.net and @me.com domains are not working with this version of the plugin, but I have to investigate the cause. I found the logs of the lost emails, but I would like to know If I can recover the sender or the content of the original messages. May 24 23:41:11 localhost sendmail[27653]: s4P3fBc3027653: from=www-data, size=3250, class=0, nrcpts=1, msgid=<[email protected]_web.com>, relay=www-data@localhost May 24 23:41:11 localhost sm-mta[27655]: s4P3fBdA027655: from=<[email protected]>, size=3359, class=0, nrcpts=1, msgid=<[email protected]_web.com>, proto=ESMTP, daemon=MTA-v4, relay=localhost.localdomain [127.0.0.1] May 24 23:41:11 localhost sendmail[27653]: s4P3fBc3027653: [email protected], ctladdr=www-data (33/33), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=33250, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (s4P3fBdA027655 Message accepted for delivery) May 24 23:41:12 localhost sm-mta[27657]: s4P3fBdA027655: to=<[email protected]>, ctladdr=<[email protected]> (33/33), delay=00:00:01, xdelay=00:00:01, mailer=esmtp, pri=123359, relay=tnetmx.telefonica.net. [86.109.99.69], dsn=5.0.0, stat=Service unavailable May 24 23:41:12 localhost sm-mta[27657]: s4P3fBdA027655: s4P3fCdA027657: DSN: Service unavailable May 24 23:41:12 localhost sm-mta[27657]: s4P3fCdA027657: to=<[email protected]>, delay=00:00:00, xdelay=00:00:00, mailer=local, pri=30000, dsn=2.0.0, stat=Sent Thanks

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• Dell VRTX - slow cluster shared storage

  - by NorbyTheGeek

  I have a brand new Dell VRTX box set up as a Failover Cluster running HA Hyper-V virtual machines. This is my first time setting up clustering, and my first time with one of these boxes, so I'm sure I've missed something. The virtual machines are experiencing high disk latency and bad performance when accessing their VHD(x) files located on a Cluster Shared Volume. The VRTX has 10 x 900 GB 10K SAS drives in RAID 6 configuration, and the VRTX has the redundant Shared PERC 8 controllers. Both blades have full access to the virtual disks. There are two M520 blades installed, each with 128 GB RAM. MPIO is configured for the PERC 8 controllers. Operating system on the blades is Server 2012 (NOT R2). The RAID 6 array is split into a small (8 GB) volume for cluster quorum witness and a large (6.5 TB) volume for a Cluster Shared Volume (mounted on the nodes as C:\ClusterStorage\Volume1) An example of slow disk access: logging into a Server 2012 VM and having Server Manager come up automatically. Disk access goes to 100%, with write speeds at 20 MB or so, read speeds of 500 KB or so, and Average Response Time of over 1000 ms, sometimes spiking at 4000-5000 ms or so. It's the latency that really worries me. Is there something specific I should look at in my configuration? It doesn't seem to matter whether I use VHD or VHDX, dynamic or static.

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• Unable to connect to EC2 instance after "reboot"

  - by KPL

  I am not able to connect to my m1.small instance after rebooting it. I have already associated the public IP with this instance. Upon checking the system log, this seems to be the issue: cloud-init-nonethttp://11.84: waiting 10 seconds for network device cloud-init-nonethttp://21.85: waiting 120 seconds for network device cloud-init-nonethttp://141.85: gave up waiting for a network device. Cloud-init v. 0.7.3 running 'init' at Sun, 18 May 2014 07:02:55 +0000. Up 142.54 seconds. ci-info: +++++++++++++++++++++++Net device info++++++++++++++++++++++++ ci-info: +--------+-------+-----------+-----------+-------------------+ ci-info: | Device | Up | Address | Mask | Hw-Address | ci-info: +--------+-------+-----------+-----------+-------------------+ ci-info: | lo | True | 127.0.0.1 | 255.0.0.0 | . | ci-info: | eth0 | False | . | . | 02:43:xx:xx:xx:xx | ci-info: +--------+-------+-----------+-----------+-------------------+ ci-info: !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Route info failed!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! A bunch of these follow the above message: 2014-05-18 07:02:56,178 - url_helper.pyWARNING: Calling http://169.254.169.254/2009-04-04/meta-data/instance-id failed 0/120s: request error [HTTPConnectionPool(host='169.254.169.254', port=80): Max retries exceeded with url: /2009-04-04/meta-data/instance-id (Caused by : Errno 101] Network is unreachable) This is obviously related to the network interface not being working correctly. I have tried this so far: Relaunch a new instance from the custom AMI (created from EBS) of the failing instance. The same error shows up in the logs. Attach a new network interface to the EC2 instance. The error still persists. eth1 shows up in the list but the "up" column is False.

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• publish over ssh jenkins

  - by Pravish

  I have been working on a small project where need to copy files from one windows machine to another through jenkins in a secure way. I have heard about publish over ssh plugin in Jenkins. I tried to set that up but no luck. Did anybody do that and help me in that? Even to resolve it, i had installed openssh with cygwin on both the windows server and tried to copy the files (through SCP) or just connect both hosts (through ssh) in linux way through cygwin but always gets error of - ssh 3612 tty_list::allocate_tty: No tty allocated or scp 2680 tty_list::allocate_tty: No tty allocated Please help!

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• Apache > 2.2.22 rewrite rule not working?

  - by EBAH

  since yesterday I'm trying to figure out how to fix the following: running phpipam (http://www.phpipam.net/) with WAMP (Windows environment). The problem I am facing is related with RewriteRule functionality, so forget phpipam for a moment and concentrate on few lines of code. Here is the directory structure of my test website that emulate the first steps phpipam does (you can download http://goo.gl/ksvuGc): C:\wamp\www\rewrite-tst\ C:\wamp\www\rewrite-tst\.htaccess C:\wamp\www\rewrite-tst\index.php C:\wamp\www\rewrite-tst\install C:\wamp\www\rewrite-tst\install\index.php It seems that the following rewrite rule in .htaccess doesn't work: C:\wamp\www\rewrite-tst\.htaccess # install RewriteRule ^install$ install/ [R] RewriteRule ^install/$ index.php?page=install When opening C:\wamp\www\rewrite-tst\index.php the first step check the URL for "install" argument. Since the URL is: http://localhost/rewrite-tst no arguments are supplied and the browser is redirected to: header("Location: /rewrite-tst/install/") At this point the browser opens the page: C:\wamp\www\rewrite-tst\install\index.php >> http://localhost/rewrite-tst/install Apache, thanks to C:\wamp\www\rewrite-tst.htaccess should intercept this URL and redirect to: http://localhost/rewrite-tst/index.php?page=install Here are my tries: Win Apache 2.2.22: works Win Apache 2.4.4: KO Win Apache 2.4.6: KO In the attached zip file you can also find two traces from apache RewriteLog which I can't understand very well. Why Apache 2.4 doesn't work on Windows? Is it possible that there's a bug on Windows version of Apache (2.4.4 and 2.4.6) or am I wrong someway? Thanks for your help!!! Evan -- UPDATE 12 oct 2013 Now I'm really confused! Working on Linux, Kubuntu 13.04. Linux Apache 2.2.22: works Linux Apache 2.4.6: KO I guess there's something wrong in my rules at this point, or some change happened from Apache 2.2 to 2.4 ...

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• How to configure apache's mod_proxy_html to work as an ajax proxy?

  - by dcerecedo

  I'm trying to build a web site that let's you view and manipulate data from any page in any other website. To do that, I have to bypass 'Allow Origin' problems: i'm loading the other domain's content in an iframe and i have to manipulate its content with javascript downloaded from my domain. My first attempt was to write a simple proxy myself, requesting the other domains page through a server proxy coded in Java that not only serves the content but rebuilds links (src's and href's) in the content so that the content referenced by these links alse get downloaded through my handmade proxy. The result is not bad but has problems with url's in css and scripts. It's then that i realized that mod_proxy_html is supposed to do exactly all this job. The problem is that i cannot figure out how to make it work as expected. Let's suppose my server runs in my-domain.com and to proxy and transform content from another domain i'd make a request like this: my-domain.com/proxy?url=http://another-domain.com/some/content I'd want mod_proxy_html to serve the content and rewrite following URLs in http://another-domain.com/some/content in the following ways: Absolute URLs not from another-domain.com: no rewritting Relative from root urls:/other/content - /proxy?url=http://another-domain.com/other/content Relative urls: other/content - /proxy?url=http://another-domain.com/some/content/other/content Relative to parent urls: ../other/content - /proxy?url=http://another-domain.com/some/other/content The url should be specified at runtime, not configuration time. Can this be achieved with mod_proxy_html? Could anyone provide a simple working configuration to start with? EDIT 1-First approach The following site config will work fine with sites that use absolute url's everywhere like http://www.huffingtonpost.es/. Youc could try on this config on localhost: http://localhost/asset/http://www.huffingtonpost.es/ <VirtualHost *:80> ServerName localhost LogLevel debug ProxyRequests off RewriteEngine On RewriteRule ^/asset/(.*) $1 [P] ProxyHTMLURLMap $1 /asset/ <Location /asset/> ProxyPassReverse / ProxyHTMLURLMap / /asset/ </Location> </VirtualHost> But as explained in the documentation, if I hit a site using relative url's, I'd like to have these rewritten on the html via mod_proxy_html. So I shoud change the Location block as follows: <Location /asset/> ProxyPassReverse / #Depending on your system use one line or the other #Ubuntu: #SetOutputFilter proxy-html #any other system: ProxyHTMLEnable On ProxyHTMLURLMap / /asset/ </Location> ...which doesn't seem to work. Comments, hints and ideas welcome!

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• Kill PHP process when connection is closed

  - by user838437

  I've posted the following question to SO, but thought there might be a server based solution. http://stackoverflow.com/questions/9053964/php-script-with-sleep-does-not-exit-on-connection-close I'm running an Ubuntu VPS to run this script, and I'm trying to get the script to die when the user closes the window/tab of his browser. There are several PHP based functions to see if the connection is still open, but none works (trust me, tested them all). Any creative ideas on how I can do this through the server maybe?

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• Galaxy Tab 3 producing continuous LightSensor error in LogCat

  - by Richard Tingle

  I am using a Galaxy Tab 3 as a test device for writing an android app. As such I'm interested in the output of the LogCat which is being filled with these error level messages. The device itself appears to work correctly, apps which rely on the light sensor correctly respond to it and the number in the error itself goes down if the light sensor is obscured. If I wasn't using it to develop apps I wouldn't even be aware of the issue but I believe it is an issue with the device itself not my app: simply plugging the tab 3 into the computer and using Eclipse - ADT to look at the LogCat without any app running leads to these errors being shown. I know I could filter the LogCat to ignore these errors but inconvenience aside; they concern me. A sample of the log cat is below (it generates errors continuously). This is on verbose so it includes some debug level (D/) messages as well as the error level messages (E/). How can I correct the device to no longer generate these errors. 06-11 10:08:45.789: E/LightSensor(377): LightSensor::readEvents mPendingEvent.light = 14 06-11 10:08:45.992: E/LightSensor(377): LightSensor::readEvents mPendingEvent.light = 14 06-11 10:08:46.195: E/LightSensor(377): LightSensor::readEvents mPendingEvent.light = 14 06-11 10:08:46.398: E/LightSensor(377): LightSensor::readEvents mPendingEvent.light = 14 06-11 10:08:46.601: E/LightSensor(377): LightSensor::readEvents mPendingEvent.light = 14 06-11 10:08:46.804: E/LightSensor(377): LightSensor::readEvents mPendingEvent.light = 14 06-11 10:08:47.007: E/LightSensor(377): LightSensor::readEvents mPendingEvent.light = 14 06-11 10:08:47.210: E/LightSensor(377): LightSensor::readEvents mPendingEvent.light = 14 06-11 10:08:47.414: E/LightSensor(377): LightSensor::readEvents mPendingEvent.light = 14 06-11 10:08:47.617: E/LightSensor(377): LightSensor::readEvents mPendingEvent.light = 14 06-11 10:08:47.820: E/LightSensor(377): LightSensor::readEvents mPendingEvent.light = 14 06-11 10:08:48.023: E/LightSensor(377): LightSensor::readEvents mPendingEvent.light = 14 06-11 10:08:48.039: D/dalvikvm(15201): GC_CONCURRENT freed 1947K, 17% free 16973K/20359K, paused 13ms+13ms, total 50ms 06-11 10:08:48.226: E/LightSensor(377): LightSensor::readEvents mPendingEvent.light = 14 06-11 10:08:48.429: E/LightSensor(377): LightSensor::readEvents mPendingEvent.light = 13 06-11 10:08:48.632: E/LightSensor(377): LightSensor::readEvents mPendingEvent.light = 13 06-11 10:08:48.632: D/STATUSBAR-NetworkController(472): refreshSignalCluster: data=0 bt=false 06-11 10:08:48.835: E/LightSensor(377): LightSensor::readEvents mPendingEvent.light = 14 06-11 10:08:49.039: E/LightSensor(377): LightSensor::readEvents mPendingEvent.light = 14 06-11 10:08:49.242: E/LightSensor(377): LightSensor::readEvents mPendingEvent.light = 14 06-11 10:08:49.445: E/LightSensor(377): LightSensor::readEvents mPendingEvent.light = 13 06-11 10:08:49.632: D/STATUSBAR-NetworkController(472): refreshSignalCluster: data=0 bt=false 06-11 10:08:49.648: E/LightSensor(377): LightSensor::readEvents mPendingEvent.light = 14 06-11 10:08:49.851: E/LightSensor(377): LightSensor::readEvents mPendingEvent.light = 13

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• Export to excel - COMMA issue

  - by 6242Y

  I want to put a string in an excel sheet from my Export to excel function. However my string is as follows: string : Red, red wine Go to my head Make me forget that I Still need and on my excel I get unexpected results , column change after comma and also column change when there is no full stop in front of an UPPER CASE alphabet. The Upper case alphabets (without a full stop before them) are also causing this (Go , Make . Still) How can I solve this issue ? I tried removing the spaces after the comma as var desc = ""; if (o.Description.Contains(',')) { var trimmedSplits = new List<string>(); var splits = o.Description.Split(','); foreach (var stringBits in splits) { desc = desc + stringBits.Trim() + ","; } desc = desc.Remove(desc.Length - 1); } dtRow[(int)ProductRangeExportToExcel.Description] = desc;

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• Cisco RV016 dual WAN and VPN setup

  - by sklr

  I have a VPN of several RV016 routers and I want to set some of them with 2 ISPs. I plug the two ISP cables in WAN 1 and 2 ports and configure the router to "Intelligent Balancer(Auto Mode)". It works ok like that, but the VPNs that I set use the public IP of the provider. For example if I have 5 VPNs set for ISP1 (WAN1) and the balancer sends the request trough WAN2 it can't use any of the configured VPNs because the public IP is different. How do I deal with this problem?

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• Send command through PuTTY automatic login

  - by Arthur

  I am using the following to login automatically to a remote server and then run commands listed in a commands.txt, like this: C:\path to\putty.exe -ssh adreese.ip -l user -pw Password -m C:\Path to\command.txt commands.txt contains the following: wakeonlan -i broadcast adress Macadress However, when I try to do so a new window for PuTTY appears, but it closes and exits instantly after login. As a result, I cannot see the output of the command(s). After a several tests, it appears that the command is not execute , cause my computer doesn't "wake on lan". I don't understand what's going on here ? I cannot use the plink.exe program cause I cannot make connection with public key ( too much distant site for doing all the registration keys in putty ) Can someone help me with this ? Or can i use another program to make ssh connection and send command with script from a windows os? Edit : I also try to make a bash file in the distant server with the same command and execute it from the session like this : C:\path to\putty.exe -ssh adreese.ip -l user -pw Password \home\user\script.sh Ihave the same problem... Need help please : /

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• Connect devices plugged into Raspberry Pi ethernet to WiFi network

  - by Tom

  I'm just starting out on a mission to learn more about networking and I've followed a tutorial (http://raspberrypihq.com/how-to-turn-a-raspberry-pi-into-a-wifi-router/) to turn my Raspberry Pi into a wifi router. That worked really well so I modified it slightly so that I can use a tethered iphone for the internet connection - I just switched all "eth0" references to "eth1" (the iphone interface) and added a script to set everything up when the phone is plugged in. This setup has freed up the Pi's ethernet port so I'd like to try and take this a step further and allow devices plugged into it to connect to the network. If possible, I'd like to try adding a switch so I can connect multiple devices. I've tried fiddling around with nat & iptables with no luck so my question is, how can I connect devices on eth0 to my wlan network?

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• Asterisk server firewall script allows 2-way audio from incoming calls, but not on outgoing?

  - by cappie

  I'm running an Asterisk PBX on a virtual machine directly connected to the Internet and I really want to prevent script kiddies, l33t h4x0rz and actual hackers access to my server. The basic way I protect my calling-bill now is by using 32 character passwords, but I would much rather have a way to protect The firewall script I'm currently using is stated below, however, without the established connection firewall rule (mentioned rule #1), I cannot receive incoming audio from the target during outgoing calls: #!/bin/bash # first, clean up! iptables -F iptables -X iptables -t nat -F iptables -t nat -X iptables -t mangle -F iptables -t mangle -X iptables -P INPUT ACCEPT iptables -P FORWARD DROP # we're not a router iptables -P OUTPUT ACCEPT # don't allow invalid connections iptables -A INPUT -m state --state INVALID -j DROP # always allow connections that are already set up (MENTIONED RULE #1) iptables -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT # always accept ICMP iptables -A INPUT -p icmp -j ACCEPT # always accept traffic on these ports #iptables -A INPUT -p tcp --dport 80 -j ACCEPT iptables -A INPUT -p tcp --dport 22 -j ACCEPT # always allow DNS traffic iptables -A INPUT -p udp --sport 53 -j ACCEPT iptables -A OUTPUT -p udp --dport 53 -j ACCEPT # allow return traffic to the PBX iptables -A INPUT -p udp -m udp --dport 50000:65536 -j ACCEPT iptables -A INPUT -p udp -m udp --dport 10000:20000 -j ACCEPT iptables -A INPUT -p udp --destination-port 5060:5061 -j ACCEPT iptables -A INPUT -p tcp --destination-port 5060:5061 -j ACCEPT iptables -A INPUT -m multiport -p udp --dports 10000:20000 iptables -A INPUT -m multiport -p tcp --dports 10000:20000 # IP addresses of the office iptables -A INPUT -s 95.XXX.XXX.XXX/32 -j ACCEPT # accept everything from the trunk IP's iptables -A INPUT -s 195.XXX.XXX.XXX/32 -j ACCEPT iptables -A INPUT -s 195.XXX.XXX.XXX/32 -j ACCEPT # accept everything on localhost iptables -A INPUT -i lo -j ACCEPT # accept all outgoing traffic iptables -A OUTPUT -j ACCEPT # DROP everything else #iptables -A INPUT -j DROP I would like to know what firewall rule I'm missing for this all to work.. There is so little documentation on which ports (incoming and outgoing) asterisk actually needs.. (return ports included). Are there any firewall/iptables specialists here that see major problems with this firewall script? It's so frustrating not being able to find a simple firewall solution that enabled me to have a PBX running somewhere on the Internet which is firewalled in such a way that it can ONLY allows connections from and to the office, the DNS servers and the trunk(s) (and only support SSH (port 22) and ICMP traffic for the outside world). Hopefully, using this question, we can solve this problem once and for all.

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• DHCP misbehavior

  - by Peregrino69

  ISC DHCP Server is running on Fedora 10. Since it's doing nothing else nobody bothered updating it... I've noticed behavior that looks very strange to me: the DHCP server gets a DISCOVER as broadcast, sends OFFER as unicast to the DHCP relay - and immediately afterwards sends the same offer as a bcast. The client itself is misbehaving, it's continuously sending DHCP DISCOVER packets, but I don't think that could cause the server to bcast the offer. Does anyone have any idea why this might happen - is it maybe a feature of this stone-age server?

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• Excel formula on IF

  - by Ashvin

  I am looking for a IF formula with 3 conditions. Request for help. Conditions: If Cell value is less than 10000 the value should be 0 If cell value is greater than 10000 and less than 15000, the value should be 150 if the cell value is greater than 15000, the value should be 200. I am trying the below formula but for cell value less than 10000, The value is showing as "false" =IF(cell>10000<15000,150,IF(cell>15000,200,0))

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• Concatenation of a 2 second silence audio with a normal audio not working

  - by user1665130

  I have a code for concatenation of files using ffmpeg.Here silence.wav is a mute audio file with 2 seconds length. I need to prepend this mut audio file to REC00096_Jun-06-2014 16.47.28.wav. I tried the folowing code. ffmpeg -i D:\vishnu\silence.wav -i D:\vishnu\REC00096_Jun-06-2014 16.47.28.wav \-filter_complex '[0:0][1:0][2:0][3:0]concat=n=2:v=0:a=1[out]' \-map '[out]' output.wav Following is the error i am getting. D:\vishnu>ffmpeg -i silence.wav -i "D:\vishnu\REC00096_Jun-06-2014 16.47.28.wav" -filter_complex '[0:0][1:0][2:0][3:0]concat=n=2:v=0:a=1[out]' -map '[out]' outp ut.wav ffmpeg version N-59036-g5d8e4f6 Copyright (c) 2000-2013 the FFmpeg developers built on Dec 12 2013 22:01:01 with gcc 4.8.2 (GCC) configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab le-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetyp e --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --ena ble-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-l ibopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libsp eex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aa cenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavp ack --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib libavutil 52. 58.100 / 52. 58.100 libavcodec 55. 45.101 / 55. 45.101 libavformat 55. 22.100 / 55. 22.100 libavdevice 55. 5.102 / 55. 5.102 libavfilter 3. 92.100 / 3. 92.100 libswscale 2. 5.101 / 2. 5.101 libswresample 0. 17.104 / 0. 17.104 libpostproc 52. 3.100 / 52. 3.100 Input #0, wav, from 'silence.wav': Metadata: encoder : Lavf55.22.100 Duration: 00:00:02.02, bitrate: 4234 kb/s Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, 5.1, s16, 4 233 kb/s Guessed Channel Layout for Input Stream #1.0 : mono Input #1, wav, from 'D:\vishnu\REC00096_Jun-06-2014 16.47.28.wav': Duration: 00:00:08.04, bitrate: 384 kb/s Stream #1:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 24000 Hz, mono, s16, 384 kb/s [wav @ 036f5e40] Invalid stream specifier: '[out]'. Last message repeated 1 times Stream map ''[out]'' matches no streams. D:\vishnu>

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• Bay Speaker Panel Installation

  - by JordanD

  I purchased a bay speaker panel that has a molex connector and a sound connector. Do I need to run the sound connector through my tower and somehow out the back into the IO panel? Or is there supposed to be a place on my motherboard for it to connect to? This is a replacement for normal desktop speakers for me to save desk space. Edit: Is there an adapter for the sound cable to the mother board? If so; what is it called? Thanks

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• What user information is exposed via a browser?

  - by ipso

  Is there a function or website that can collect and display ALL of the user information that can be obtained via a browser? Background: This of course does not account for the significant cross-reference abilities of large corporations to collate multiple sources and signals from users across various properties, but it's a first step. Ghostery is just a great idea; to show people all of the surreptitious scripts that run on any given website. But what information is available – what is the total set of values stored – that those scripts can collect from? If you login to a search engine and stay logged in but leave their tab, is that company still collecting your webpage viewing and activity from other tabs? Can past or future inputs to pages be captured – say comments on another website? What types of activities are stored as variables in the browser app that can be collected? This is surely a highly complex question, given to countless user scenarios – but my whole point is to be able to cut through all that – and just show the total set of data available at any given point in time. Then you can A/B test and see what is available with in a fresh session with one tab open vs. the same webpage but with 12 tabs open, and a full day of history to boot. (Latest Firefox & Chrome – on Win7, Win8 or Mint13 – although I'd like to think that won't make too much of a difference. Make assumptions. Simple is better.)

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