I have disabled selinux in /etc/sysconfig/selinux:  SELINUX=disabled   rebooted and disabled both firewalld and iptables services.   # sestatus SELinux status:                 disabled  # systemctl status firewalld ● firewalld.service - firewalld - dynamic firewall daemon    Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled)    Active: inactive (dead)      Docs: man:firewalld(1)  # systemctl status iptables ● iptables.service - IPv4 firewall with iptables    Loaded: loaded (/usr/lib/systemd/system/iptables.service; disabled; vendor preset: disabled)    Active: inactive (dead)   # ufw status Status: inactive   I still can't access the server using a specific port:  # nc -v 10.0.12.3 8887 nc: connect to 10.0.12.3 port 8887 (tcp) failed: Connection refused   I can ping the server and ssh to it.  I have tried opening ports using iptables and firewalld and haven't managed to make it work. The last option remaining is to disable the firewall completely and even that doesn't work.   the ports that are being listened on are:  # netstat -plnt  Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name     tcp        0      0 0.0.0.0:111             0.0.0.0:*               LISTEN      1031/rpcbind         tcp        0      0 192.168.122.1:53        0.0.0.0:*               LISTEN      1843/dnsmasq         tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      1392/sshd            tcp        0      0 127.0.0.1:631           0.0.0.0:*               LISTEN      1391/cupsd           tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN      1756/master          tcp        0      0 0.0.0.0:6010            0.0.0.0:*               LISTEN      1892/sshd: jmalapra  tcp        0      0 0.0.0.0:6011            0.0.0.0:*               LISTEN      2461/sshd: jmalapra  tcp6       0      0 :::111                  :::*                    LISTEN      1031/rpcbind         tcp6       0      0 :::22                   :::*                    LISTEN      1392/sshd            tcp6       0      0 ::1:631                 :::*                    LISTEN      1391/cupsd           tcp6       0      0 :::6010                 :::*                    LISTEN      1892/sshd: jmalapra  tcp6       0      0 :::6011                 :::*                    LISTEN      2461/sshd: jmalapra
This is a  about Connection Refused    We see a lot of questions to the effect      When I try to connect to a system I get a message      Connection refused      Why is this ?
What book features people living in a tree who move up it in a bubble? In version 5.2 of Apple's Pages app for OS X (Mavericks), how do I change the page layout? Refreshing open attribute table in ArcMap using ArcPy rather than ArcObjects? I am running the Calculate Field GP tool from the arcpy in ArcMap. When a row value is updated, it does not show up untill I use the Reload Cache tool (Table Options > Reload Cache). How do I refresh the attribute table automatically without using ArcObjects?  I have tried updating the definition query as @blah238 suggested , but this doesn't help. Resetting the data source is not an option because the feature class might be in the editing session and I don't want to lose the connection to the source data. Execute command from file in current shell I want to executed command from file (which is script) in current shell in terminal.  Example: I have file ch_dir contains following:  #!/bin/bash cd /usr   Now if I execute file usually as following then it executes commands in different shell:  pandya@pandya-desktop:~$ ./ch_dir pandya@pandya-desktop:~$   Here cd /user is executed in different shell.  But I want to execute in Current shell. How do I do that?  Note: Here cd is only used to explain. Question's aim is to execute any command in current shell What are the alternatives to OS X's Spotlight? Is it possible to make my laptop's screen act as a second monitor for my desktop computer? Changing planes at Newark Airport I fly in from Sweden with United to Newark Liberty Airport. The connecting flight with United departs to Costa Rica a few hours later from Newark as well. The two flight-segments are part of the same trip and ticket.  I was hoping to stay in the same terminal but am suspecting that it wont be as straightforward as I had hoped - reading through the older posts it seems that a transfer is needed from A to C but it's not fully clear.   Do I need to pass through immigration? Do I need to fetch our bags? Even if my bags have tags all the way to SJO? Do I need to change terminals? Which terminal would I arrive in? Depart from? How can I launch screensaver with a keyboard shortcut? What does UNDEF and notype() mean when seeing the C++ library information using dumpbin? SharePoint Current User View using JavaScript Difference between standard beta and unstandard beta distributions? glob() - sort array of files by last modified datetime stamp I am trying to use Stack Exchange Andoid App to use my accounts in Stack Overflow &amp; Area 51.   For the Area 51, there is only Area 51 Discussion. Even Area 51 Discussion isn't working in the App!   VERSION 1.0.51  When adding this site, it's showing the correct full name as in this screen-shot:     However, when I pin this site to my fav sites in Stack Exchange, it is showing: Unknown Site. When clicking it, it shows black screen then just quit the App!  Here is the screen-shot:       Is the site not yet capable with Android? or is it a bug in the App itself?  PS: this question isn't duplicate:   In the previous versions of the App, the site was opening but with Unknown Site name. However, in this version, it quits the app when pressing the area site! It isn't opening at all! This question is also to track this bug in the App. As it's about the site name issue &amp; the content as well. SSH connection problem with "Host key verification failed..." error I can connect to another Ubuntu machine in my LAN via SSH. On both of then PC's I installed   but from another Ubuntu computer I can not connect to my PC via SSH and I got this error:     Host key verification failed... Error "WIF10201: No valid key mapping found" when trying to create claims from SAML Subdomain versus subdirectory I recently moved from having a main site like www.example.com with a subdomain associated site yyy.example.com, to moving everything off the subdomain to a subdirectory like www.example.com/yyy/, with the same hierarchy underneath the subdirectory, and now yyy.example.com is just a redirect page to the subdirectory, so yyy.example.com/abc/page-x is redirected to www.example.com/yyy/abc/page-x and so on.  The effect has been that the traffic increased by several times (the total page views are more than ten times at the present rate) what it was to the yyy subdomain. Previously almost all of the traffic to the yyy subdomain was from the www site. This is from monitoring the old yyy site for a year or more.  I'm curious to know if there's any research or results which would indicate whether this is universal (subdirectories beat subdomains) or "just me". Can I charge my laptop with a charger that has different specifications? Is it possible to install Ubuntu on my Windows 8 computer without any CD or USB drive? Please read entire post CAREFULLY before answering.  This question will make you confused if you don't.  Information (May skip :P)   OS : Windows NT 6.2 (Windows 8 K) Equipped hard disk   Total 1TB, 1 disk C: (Simple Layout, NTFS, Boot, Pagefile, Crash dump, Main): total 488,039,776,256 bytes, used 93,473,599,488 bytes D: (Simple Layout, NTFS, Main): total 486,859,075,584 bytes, used 8,426,016,768 bytes hidden: Ask if needed  Brand(manufacturer): Samsung Electronics Processor(CPU): Intel(R) Core(TM) i5-3230M CPU @ 2.60GHz RAM: 8GB , 64-bit , OS 64-bit   Question (READ THEM ALL VERY CAREFULLY)   Is there any way to install Ubuntu on this computer without any external disk (CD, USB drive, etc) Note : This computer is 64-bit, so  did not help me. WUBI does not support UEFI, and This computer uses it. No Virtual PC programs like VirtualBox or VMWare, because it takes memory.   EDIT : I already found a USB drive in my home, so now it is installed on my computer xD .NET OpenSource projects and strong named assemblies? Cant install via Ubuntu Software- "apt transaction returned result exit-failed" I'm using 17.04 ( Clean Install ), and as far as I remember, every try to install any sofware- it fails with that error code.  I tried sudo apt-get update &amp;&amp; apt-get upgrade and problem persists.  any idea why?   edit: Using software Updater gave this result :   edit : output of update  guy@LG-LAPTOP:~$ sudo apt-get update &amp;&amp; apt-get upgrade [sudo] password for guy:  Ign:1 http://il.archive.ubuntu.com/ubuntu zesty InRelease Ign:2 http://il.archive.ubuntu.com/ubuntu zesty-updates InRelease               Ign:3 http://il.archive.ubuntu.com/ubuntu zesty-backports InRelease             Err:4 http://il.archive.ubuntu.com/ubuntu zesty Release                           503  Service Unavailable Get:5 http://security.ubuntu.com/ubuntu zesty-security InRelease [89.2 kB]      Err:6 http://il.archive.ubuntu.com/ubuntu zesty-updates Release                   503  Service Unavailable Get:7 http://archive.canonical.com/ubuntu zesty InRelease [10.2 kB]             Err:8 http://il.archive.ubuntu.com/ubuntu zesty-backports Release                 503  Service Unavailable Get:9 http://archive.canonical.com/ubuntu zesty/partner Sources [1,416 B]       Get:10 http://archive.canonical.com/ubuntu zesty/partner amd64 Packages [1,616 B] Get:11 http://archive.canonical.com/ubuntu zesty/partner i386 Packages [1,612 B] Get:12 http://archive.canonical.com/ubuntu zesty/partner Translation-en [708 B] Get:13 http://security.ubuntu.com/ubuntu zesty-security/main amd64 DEP-11 Metadata [11.7 kB] Get:14 http://security.ubuntu.com/ubuntu zesty-security/main DEP-11 64x64 Icons [9,219 B] Get:15 http://security.ubuntu.com/ubuntu zesty-security/universe amd64 DEP-11 Metadata [14.4 kB] Get:16 http://security.ubuntu.com/ubuntu zesty-security/universe DEP-11 64x64 Icons [31.0 kB] Reading package lists... Done                                          E: The repository 'http://il.archive.ubuntu.com/ubuntu zesty Release' does no longer have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://il.archive.ubuntu.com/ubuntu zesty-updates Release' does no longer have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://il.archive.ubuntu.com/ubuntu zesty-backports Release' does no longer have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. guy@LG-LAPTOP:~$    output of apt get  guy@LG-LAPTOP:~$ sudo apt-get install putty Reading package lists... Done Building dependency tree        Reading state information... Done The following additional packages will be installed:   putty-tools Suggested packages:   putty-doc The following NEW packages will be installed:   putty putty-tools 0 upgraded, 2 newly installed, 0 to remove and 0 not upgraded. Need to get 661 kB of archives. After this operation, 2,713 kB of additional disk space will be used. Do you want to continue? [Y/n]  Err:1 http://il.archive.ubuntu.com/ubuntu zesty/universe amd64 putty-tools amd64 0.67-3   503  Service Unavailable Err:2 http://il.archive.ubuntu.com/ubuntu zesty/universe amd64 putty amd64 0.67-3   503  Service Unavailable E: Failed to fetch http://il.archive.ubuntu.com/ubuntu/pool/universe/p/putty/putty-tools_0.67-3_amd64.deb  503  Service Unavailable E: Failed to fetch http://il.archive.ubuntu.com/ubuntu/pool/universe/p/putty/putty_0.67-3_amd64.deb  503  Service Unavailable E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing? guy@LG-LAPTOP:~$