I have installed Ubuntu 18.04 LTS for testing on a crash dummy in anticipation of upgrading my 16.04 LTS machines.  So far everything is working quite well and I do like some of the changes and improvements.  One thing I noticed though is that Ubuntu seems to be "calling home" to Google web sites on a frequent, periodic basis.  Wondering what that's all about.  This issue was  regarding a similar situation in Ubuntu 17.10 but the answer and reasons for this snooping were extremely vague.  I block all outside traffic to/from my local subnet (192.168.0.0/24) and force all Internet traffic to go through my VPN.  All of this works well.    Every five minutes I see five packets as follows:  [  +4.160090] [UFW BLOCK] IN= OUT=wlx00026f5a322b SRC=192.168.0.11 DST=104.198.143.177 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=10309 DF PROTO=TCP SPT=44246 DPT=80 WINDOW=29200 RES=0x00 SYN URGP=0  [  +8.192209] [UFW BLOCK] IN= OUT=wlx00026f5a322b SRC=192.168.0.11 DST=104.198.143.177 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=10310 DF PROTO=TCP SPT=44246 DPT=80 WINDOW=29200 RES=0x00 SYN URGP=0    The destination IP isn't always the same but a whois verifies that they are all owned by Google.  Updates, NTP and so on seem to be working correctly and are (I assume) properly going through my VPN.  In testing this I have all apps shut down so it seems like it's something in Ubuntu itself that is causing these attempted connections.  There is nothing Google-related turned on that I can see.  Chrome isn't even installed.  jones@Office-Ubuntu:~$ ps -ef | grep chrome jones 19610  1930  0 10:24 pts/0    00:00:00 grep --color=auto chrome jones@Office-Ubuntu:~$    If I didn't have the firewall enabled I'd never even know this was going on.  If I go to the web site IP it does render a (blank) page which makes me think that the purpose for these connection attempts is data collection.  Since this is Google, I am naturally suspicious/paranoid that something creepy is going on.  A related  indicates that this might be some sort of a "keep-alive" function.  If so, it is obviously not needed since I am blocking the connections in UFW and everything continues to work perfectly.  I see no way to turn this off as described in the related question. And as an aside, if this is indeed some sort of a "keep-alive" "feature" there are probably better ways to implement that capability without exposing the Ubuntu community to Google's data collection warehouse.  And when/why did Ubuntu start thinking it would be a good idea to collaborate with Google to collect user information surreptitiously?  My question differs from the  inasmuch as the answer there implied (apparently incorrectly) that these connections are necessary and benefit Ubuntu users (but doesn't really explain why).  The primary question I am asking is this: How do I "opt-out" of this unwanted intrusion into my privacy since connecting to a Google web site every five minutes is clearly not needed to keep anything useful in Ubuntu functioning?
122142
I am using Ubuntu 17.10 on my desktop PC, I've been monitoring network traffic with Etherape. I noticed HTTP requests from my PC(casa hostname) to googleusercontent.com (104.198.143.177). So I used lsof and ss to 'identify' process behind these requests.    Using lsof -i:   NetworkMa  778            root   20u  IPv4 546772      0t0  TCP casa:53671-&gt;177.143.198.104.bc.googleusercontent.com:http (SYN_SENT) NetworkMa  778            root   20u  IPv4 546772      0t0  TCP casa:53671-&gt;177.143.198.104.bc.googleusercontent.com:http (ESTABLISHED)   Using ss -rep dst 104.198.143.177:    tcp    SYN-SENT   0      1      casa%enp4s0:53671    177.143.198.104.bc.googleusercontent.com:http  users:(("NetworkManager",pid=778,fd=20)) timer:(on,964ms,0) ino:546772 sk:6df &lt;-&gt; tcp    ESTAB      0      87     casa%enp4s0:53671    177.143.198.104.bc.googleusercontent.com:http  users:(("NetworkManager",pid=778,fd=20)) timer:(on,300ms,0) ino:546772 sk:6df &lt;-&gt;   It seems NetworkManager (pid 778) is sending requests to googleusercontent, and it happens every 5 minutes exactly.   I have to say, no applications were launched at the moment, no background process, no network activities,no online account and it was a 'Ubuntu fresh install'. So why NM would sent requests to googleusercontent?
37347
I'm running Ubuntu server on a computer used as a wireless AP, but this AP should resolve all DNS requests to an internal IP address rather than actually performing the lookup.  I want to do the same thing that paid public WiFi hotspots do - you can connect but if you attempt to load any websites they show a default page. I've noticed that they do this by resolving all domains to an internal IP address.  I've added these lines to /etc/dnsmasq.conf:  # Add domains which you want to force to an IP address here. # The example below send any host in double-click.net to a local # web-server. address=/com/192.168.2.1 address=/uk/192.168.2.1 address=/org/192.168.2.1 address=/gov/192.168.2.1 address=/net/192.168.2.1 address=/us/192.168.2.1   which works fine for those TLD's, but I'd like to be able to do it with all domains so I can sleep at night.
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While browsing I have received notification on Google "Unusual traffic from your computer network"   We're sorry..."your computer or network may be sending automated queries. To protect our users, we can't process your request right now." See Google Help for more information.  Right now I am using the "Ubuntu 12.04" 32 bit version.  Any suggestion, why this is happens &amp; How it resolve?  Thank you for your worthy suggestion.
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I have an Apache server running on a Raspberry P and it works just fine in the local network. And after forwarding port 80 and trying to connect using the public IP, Chrome says ERR_CONNECTION_REFUSED. But the strange thing is that I CAN reach the server when using VPN and using the same IP. What can I do?     -telnet 80.***.***.78 80      Trying 80.***.***.78...     telnet: connect to address 80.***.***.78: Connection refused     telnet: Unable to connect to remote host     -route -n      Destination     Gateway         Genmask         Flags Metric Ref    Use Iface     0.0.0.0         192.168.0.1     0.0.0.0         UG    0      0        0 eth0     192.168.0.0     0.0.0.0         255.255.255.0   U     0      0        0 eth0      -sudo netstat -lapute:              Active Internet connections (servers and established)     Proto Recv-Q Send-Q Local Address           Foreign Address         State       User       Inode       PID/Program name     tcp        0      0 *:http                  *:*                     LISTEN      root       6137        2051/apache2     tcp        0      0 *:ssh                   *:*                     LISTEN      root       6367        2249/sshd     tcp        0      0 pi.local:ssh            nmb.local:65535         ESTABLISHED root       8669        2565/sshd: pi [priv     udp        0      0 *:9949                  *:*                                 root       5918        1809/dhclient     udp        0      0 *:mdns                  *:*                                 avahi      6293        2184/avahi-daemon:     udp        0      0 *:54070                 *:*                                 avahi      6295        2184/avahi-daemon:     udp        0      0 *:bootpc                *:*                                 root       5946        1809/dhclient     udp        0      0 pi.local:ntp            *:*                                 root       6310        2200/ntpd     udp        0      0 localhost:ntp           *:*                                 root       6309        2200/ntpd     udp        0      0 *:ntp                   *:*                                 root       6304        2200/ntpd
93529
I've installed Ubuntu and Lubuntu a few times now and some of those times I've had the following problem, which I currently have. When I click a torrent magnet link in Chrome (usually from Pirate bay), instead of opening transmission, the only thing that happens is a new Chrome window opens.  Upon other installations, I've not had this problem; transmission opened just as I'd like.  I've tried using Chrome's extension .torrent to Transmission, but I get the error      unable to contact http ://localhost:9091/transmission/rpc       no response
104470
I have Ubuntu 16.04 LTS installed on my PC. I have a problem playing  videos on google chrome. Version of google chrome: 51.0.2704.63 (64-bit). All other videos of youtube are playing normally in google chrome. I even tried playing the  videos on Firefox but the same problem persists. Can anyone help me with the same ?
99352
I'm preparing for a trip where I can't bring my desktop, so I recently broke out my trusty old laptop (Dell Latitude E4300) to get it ready for the trip. Previously, I had Ubuntu 12.04 LTS on the machine and there were no problems with wifi or the computer in general. My original problem came when I tried to upgrade to Ubuntu 14.04, which failed halfway through and long story short: I couldn't get it to work. I then installed Lubuntu 14.04 (It's a moderately old laptop and I had never tried Lubuntu, so why not) and it's going great, except, I can't connect to my wifi and since this will be my only method of access on my vacation, I really need to fix it. I'm kinda at a cross roads since I've never had this problem with this laptop. Any help would be great.   The output of "lspci -nvn | grep -i net" Says the wifi card is a "Broadcom Corporation BCM4322 802.11a/b/g/n Wireless LAN Controller [14e4:432b] (rev 01)"  I have looked at many other similar questions, but they're all very old and none have helped. Sorry if you guys get this a lot.  EDIT: Here is the link to the requested diagnostics (See comment by user "wild man"_
42909
I've got a development webserver on an Ubuntu box inside of VMWare Workstation 7.1.3. I'd like to run a web browser on a Windows machine (the host OS) for actually testing a web page I'm working on -- hard to run IE tests in Ubuntu :)  However, if I simply try to ping the IP given to the ubuntu VM (192.168.83.137) (or open it in my browser for that matter), it seems the host cannot communicate with the guest.  How do I allow the guest OS to communicate with the host when the guest is running in NAT mode?
77528
If I enter a URL incorrectly, my Firefox browser occasionally redirects me to    This occurs in Chrome too. I've restarted Firefox in safe mode, and it still happens I've restarted Windows 10 in safe mode, and it still happens I've installed Hitman Pro Alert. The scan found nothing, and could not prevent the redirect. My HOSTS file is clean. My ethernet settings IPv4 properties use Google's DNS: 8.8.8.8 and 8.8.4.4 The only other issue I have is when visiting  which produces numerous pop-up windows, unless I disable scripts. I have Comodo Internet Security (antivirus and firewall) installed, and it identifies nothing.   Any other suggestions?
108169
I have a local DNS server that resolves all URLs *.domain.tld to 127.0.0.1. Also, I have the production server with the same address *.domain.tld. They have the same names, because subdomains interact with each other, and I have hardcoded domain URLs. I can't change them in the production server.  The problem is to reach the production server from my developer computer without touching the DNS server and /etc/hosts.  I found some options for Chrome such as --dns-server, --host-rules, but none is working. I have Google Chrome 23.0.1271.64 and Chromium 22.0.1229.94 on Ubuntu 12.10 64-bit.
6071
I am a novice at Ubuntu (12.04).  I have it on my netbook which I use mainly for surfing the net, learning python and remote desktop into my work computer.    Do I need to enable a Firewall type software?  If so, what would you suggest, and what are sensible default suggestions?
9469
I am using Google Chrome 48.0 32-bit. Today when I launched Google Chrome, I got this message:    This computer will soon stop receiving Google Chrome updates because this Linux system will no longer be supported   I thought Ubuntu 14.04 is supported for five years, what's exactly happening here?  And on 64-bit Ubuntu, I get an error from Update Manager and apt-get update:  Failed to fetch http://dl.google.com/linux/chrome/deb/dists/stable/Release  Unable to find expected entry 'main/binary-i386/Packages' in Release file (Wrong sources.list entry or malformed file)   Some index files failed to download.   They have been ignored, or old ones used instead.
40637
I have found that ping google.com from my Windows 7 box has stopped working.  Below is the output - note that the IPv4 ping works, and Yahoo works. Is my local router at fault here?  C:\Users\Jeff&gt;ping google.com  Pinging google.com [2001:4860:4007:801::1007] with 32 bytes of data: Destination net unreachable. Destination net unreachable. Destination net unreachable. Destination net unreachable.  Ping statistics for 2001:4860:4007:801::1007:     Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),  C:\Users\Jeff&gt;ping -4 google.com  Pinging google.com [74.125.224.206] with 32 bytes of data: Reply from 74.125.224.206: bytes=32 time=5ms TTL=55 Reply from 74.125.224.206: bytes=32 time=5ms TTL=55  Ping statistics for 74.125.224.206:     Packets: Sent = 2, Received = 2, Lost = 0 (0% loss), Approximate round trip times in milli-seconds:     Minimum = 5ms, Maximum = 5ms, Average = 5ms Control-C ^C C:\Users\Jeff&gt;ping yahoo.com  Pinging yahoo.com [98.139.183.24] with 32 bytes of data: Reply from 98.139.183.24: bytes=32 time=98ms TTL=46 Reply from 98.139.183.24: bytes=32 time=86ms TTL=46  Ping statistics for 98.139.183.24:     Packets: Sent = 2, Received = 2, Lost = 0 (0% loss), Approximate round trip times in milli-seconds:     Minimum = 86ms, Maximum = 98ms, Average = 92ms Control-C  C:\Users\Jeff&gt;ping -6 google.com  Pinging google.com [2001:4860:4007:801::1005] with 32 bytes of data: Destination net unreachable. Destination net unreachable. Destination net unreachable.  C:\Users\Jeff&gt;tracert google.com  Tracing route to google.com [2001:4860:4007:801::1008] over a maximum of 30 hops:    1  Destination net unreachable.  Trace complete.
101804
I like using Chrome as my everyday browser, as well as for web dev work. I'd like to be able to prevent Chrome from caching anything from localhost (or really, any arbitrary host name) so that I don't have to hard-refresh (Ctrl-Shift-R) all the time.  Is this possible? How?
24719
I'm trying to follow the  (on my Ubuntu 10.04 VM).  The first step is:  sudo add-apt-repository ppa:linaro-maintainers/toolchain   But when I run that I get:  Error reading https://launchpad.net/api/1.0/~linaro-maintainers/+archive/toolchain: &lt;urlopen error [Errno 110] Connection timed out&gt;   I'm guessing the problem is with my configuration for my employer's proxy server, particularly for HTTPS.  When I opened  in Firefox, I got "The connection has timed out".  I then went into Firefox Preferences -> Advanced -> Network -> Settings... and set HTTP Proxy to "gateway" and Port to 8080, and checked "Use this proxy server for all protocols".  Then the page loaded.  This supports my theory.  I've tried setting the http_proxy and https_proxy environment variables (both lower and upper case):  $ set | grep -i proxy HTTPS_PROXY=https://gateway:8080 HTTP_PROXY=http://gateway:8080 http_proxy=http://gateway:8080 https_proxy=https://gateway:8080   I also tried changing them to:  $ set | grep -i proxy HTTPS_PROXY=gateway:8080 HTTP_PROXY=gateway:8080 http_proxy=gateway:8080 https_proxy=gateway:8080   And I tried adding this second line to /etc/apt/apt.conf:  Acquire::http::proxy "http://gateway:8080/"; Acquire::https::proxy "https://gateway:8080/";   But I continue to get the same error.  How do I troubleshoot this?  Update: I followed the instructions in the  to  and got further:  $ sudo add-apt-repository ppa:linaro-maintainers/toolchain Executing: gpg --ignore-time-conflict --no-options --no-default-keyring --secret-keyring /etc/apt/secring.gpg --trustdb-name /etc/apt/trustdb.gpg --keyring /etc/apt/trusted.gpg --primary-keyring /etc/apt/trusted.gpg --keyserver keyserver.ubuntu.com --recv 1DD749B890A6F66D050D985CF1FCBACA7BE1F97B gpg: requesting key 7BE1F97B from hkp server keyserver.ubuntu.com gpgkeys: HTTP fetch error 7: couldn't connect to host gpg: no valid OpenPGP data found. gpg: Total number processed: 0   I wonder if the "HTTP fetch error" means I also need to add "Defaults env_keep = http_proxy" to /etc/sudoers...  Update #2: I added:  Defaults env_keep="http_proxy" Defaults env_keep="https_proxy"   ...as in , but I still get the same "gpgkeys: HTTP fetch error 7: couldn't connect to host" error.  And this is curious:  $ sudo env | grep proxy https_proxy=https://gateway:8080   ...because http_proxy isn't there.  Any advice is appreciated.  Update #3: Since the host of my VM is a laptop, I took it home and tried there (with no proxies):  $ sudo add-apt-repository ppa:linaro-maintainers/toolchain Executing: gpg --ignore-time-conflict --no-options --no-default-keyring --secret-keyring /etc/apt/secring.gpg --trustdb-name /etc/apt/trustdb.gpg --keyring /etc/apt/trusted.gpg --primary-keyring /etc/apt/trusted.gpg --keyserver keyserver.ubuntu.com --recv 1DD749B890A6F66D050D985CF1FCBACA7BE1F97B gpg: requesting key 7BE1F97B from hkp server keyserver.ubuntu.com gpg: key 7BE1F97B: public key "Launchpad Linaro Overlay PPA" imported gpg: Total number processed: 1 gpg:               imported: 1  (RSA: 1)   It worked.  So problem is related to proxy configuration.  But I suppose I have a workaround.
80240
This case scenario is for a router with embedded linux, but I think   the answer could be the same for any Linux system.   This is my DNS check:  ~ $ cat /etc/resolv.conf nameserver 80.58.61.250 nameserver 80.58.61.254 ~ $ ping 80.58.61.250 PING 80.58.61.250 (80.58.61.250): 56 data bytes 64 bytes from 80.58.61.250: seq=0 ttl=250 time=50.0 ms 64 bytes from 80.58.61.250: seq=1 ttl=250 time=40.0 ms ^C --- 80.58.61.250 ping statistics --- 2 packets transmitted, 2 packets received, 0% packet loss round-trip min/avg/max = 40.0/45.0/50.0 ms ~ $ ping www.google.es PING www.google.es (2a00:1450:4007:808::101f): 56 data bytes ping: sendto: Network is unreachable ~ $ ping 8.8.8.8 PING 8.8.8.8 (8.8.8.8): 56 data bytes 64 bytes from 8.8.8.8: seq=0 ttl=57 time=50.0 ms 64 bytes from 8.8.8.8: seq=1 ttl=57 time=40.0 ms 64 bytes from 8.8.8.8: seq=2 ttl=57 time=40.0 ms ^C --- 8.8.8.8 ping statistics --- 3 packets transmitted, 3 packets received, 0% packet loss round-trip min/avg/max = 40.0/43.3/50.0 ms   As can be seen, there is a response from internet (8.8.8.8) but not from domain names (www.google.es, same for www.google.com). The DNS server (80.58.61.250) answers to pings. So I was wondering if the problem could be in that DNS server.    Is there some way, like telneting or similar, to check if a given DNS IP works as it must (this is: answering with a IP address when requested for a domain name)?    For example, when testing a SSH server, a possible trick is:  C:\Users\Luis&gt;telnet Midnighter- 22 SSH-2.0-OpenSSH_6.7p1 Debian-5   Third party tools accepted. Command line and Open source preferred.
94008
There seems to be some bug where mac os is constantly contacting . You can prevent it by turning off the wifi, but then your computer is nothing more than a fancy calculator. Is there a program, vpn, or even the firewall option, to block this site from the whole os?