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  • Can't ping external websites

    - by Frantumn
    I can't ping google.com with my virtual ubuntu 12.04 server. I have set up a proxy URL in my /etc/apt/apt.conf file and it says Aquire::http::proxy http://urlname.com:9999; Now, I don't know a lot about how the proxy works, but I do know when we use it on windows VMachines it's a pac script that we place in internet explorer LAN settings and it automatically detects the script and gives internet access. I tried including the 9999/proxy.pac in the apt.conf URL and it didn't seem to work any better. Would ubuntu know how to handle a proxy.pac assuming it was created for windows? Should my URL include the .pac or just end after the port numbers? I've tried both without sucess, but I would like to know. A quick test to ping a fellow co-workers' PC was sucessful. So I can see network computers, but not google. or other internet sources.

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  • How to restart WiFi interface without rebooting (it drops connection)?

    - by Dima
    I boot into ubuntu and it connects to the Wifi network fine. After about 10-15min the DNS stop resolving any website and a couple of minutes later network-managers tells me that I'm disconnected and tries to reconnect constantly to my router and fails to do it. Upon Ubuntu restart everything works fine for the first 10-15min again. When I boot into Mac OS X everything is fine with the same connection! How do I restart wifi interface? sudo ifdow wlan0 just tells me that wlan0 is not configured and wlan0 doesn't appear in /etc/network/interfaces either, which I find strange.... (unless network-manager is doing it behind my back).

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  • How can I work out how many IP addresses there are in a given range?

    - by Jarede
    I'm wondering if there is a formula to work out the amount of IP addresses in a given range. I have a system that takes either a single IP address or a start and and end IP address: A single one might be: 145.16.23.241 A range might be: 145.16.23.122 - 145.16.23.144 The people inputting these aren't technical, nor are they receiving these details from technical people, so suggesting using CIDR notation isn't an answer for me. I want to be able to highlight that when entering a range such as: 122.100.10.12 - 128.10.200.140 it might not actually be a range and rather 2 singular IP addresses since such a range would comprise of x (large number of) IP addresses. Is there a basic formula to help me highlight this?

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  • After update UBUNTU 12.04 changes wired interface from eth0 to eth1, network configuration fails

    - by Don McLaren
    I have been running UBUNTU 12.04 for a couple of months on this system with no problems. After a recent update, the bootup fails to define the wired network interface as eth0, so the default network configuration fails. ifconfig -a shows eth1 instead, as unconfigured. Booting from CD works OK, configures eth0 as normal. Solution: sudo NetworkManager The network manager figures out the situation, and configures eth1 Question: Where did this problem come from all of a sudden?

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  • Hotspot is getting disconnected from other windows system?

    - by Gaurav_Java
    I created Hotspot for sharing my system internet for other system . but after 5 - 10 min my system internet is not able to share internet but it is connected with other windows system .windows showing (No internet access ) But after running this sudo killall dnsmasq windows is able to use internet connection not happening with one system same thing is happening with 2 -3 windows system . In many cases i have 2 restart my system Here My Hotspot setting

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  • Wireless Disabled (Network Manager)

    - by Peter Kihara
    Am Having issues with My Wireless 1 My laptop had dual boot windows 7 and Ubuntu 13.04 I upgraded to windows 8 and after the first 2-3 reboots all was working well in windows and ubuntu then my wireless in ubuntu stoped working saying "wifi is disabled by hardware switch" the hardware switch has no effect I removed network manager installed new firmwares and still nothing the wifi was not working in a moment of testing I installed wifi radar and this can detect the wireless signals and at one point it connected but still Network manger still says disabled. My Laptop is a HP Pavilion dm4 2070us with Wireless Centrino N 1000 I have updated to 13.10 thinking it would fix it but still nothing

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  • Application to organize / manage installed networks

    - by vicmp3
    I was wondering if there is a Application where you can organize networks. I mean if you have installed some networks you have to note every pc's name, his ip-address and so on. Is there a Application where you can manage it? I saw the monitoring tools but that is not exactly what I'm looking for. Maybe I didnt explain me well, after all my englis his not so good :) For example if I install many different networks I write in a book how I configured them. I write pc-name ip-address ip-gateway ip-broadcast and so on for each network. It will be great if I can do it in a program to organize it well, and for example it gives me a node view of the network.

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  • Unstable Wifi and Spontaneous Low-graphic Error with Pavilion DV4

    - by Constant Dean
    I've been having numerous problems with connectivity through WiFi. It had been working for a few days and now it doesn't. On top of that around 40% of every time I turn on the laptop it shows "System running in low-graphics" error and I'm unable to view the desktop (sometimes not even able to access terminal), therefore having to manually power-down until it finally works. I use Ubuntu 12.10. nm-tool NetworkManager Tool State: connected (global) - Device: eth0 [Wired connection 1] ------------------------------------------- Type: Wired Driver: r8169 State: connected Default: yes HW Address: 84:34:97:6B:2E:D7 Capabilities: Carrier Detect: yes Speed: 10 Mb/s Wired Properties Carrier: on IPv4 Settings: Address: 192.168.1.10 Prefix: 24 (255.255.255.0) Gateway: 192.168.1.1 DNS: 192.168.1.1 DNS: 68.237.161.12 - Device: wlan0 ---------------------------------------------------------------- Type: 802.11 WiFi Driver: rt2800pci State: unavailable Default: no HW Address: 68:94:23:50:A5:D9 Capabilities: Wireless Properties WEP Encryption: yes WPA Encryption: yes WPA2 Encryption: yes Wireless Access Points

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  • Wireless connected but internet not working, modem is fine because I'm typing over wifi on my android

    - by Sandro Livaja
    I can't connect to the Internet in 11.10. I tried switching my wifi card to another USB slot but nothing changed. Is it possible that the card is able to connect while not being able to receive packages? $ ifconfig eth0 Link encap:Ethernet HWaddr 40:61:86:35:11:b0 UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) Interrupt:43 Base address:0x6000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) wlan0 Link encap:Ethernet HWaddr 74:ea:3a:8c:d5:5c inet addr:192.168.2.5 Bcast:192.168.2.255 Mask:255.255.255.0 inet6 addr: fe80::76ea:3aff:fe8c:d55c/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:12 errors:0 dropped:0 overruns:0 frame:0 TX packets:102 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1209 (1.2 KB) TX bytes:15329 (15.3 KB)

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  • How to resolve "Network host is busy; will retry in 30 seconds"?

    - by k0pernikus
    I have added a network printer, a Konica Minolta C253, via cups by its IP (http://10.0.0.42) under the http://localhost:631/ cups webfrontend on an Ubuntu 11.10 client. I used the documented KOC353U.ppd in the process. I was able to print exactly one page. Afterwards, all I get in the printer's status is the message: "Network host '10.0.0.42' is busy; will retry in 30 seconds". What is the problem here and how do I resolve it?

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  • How do I get my RTL8192ce based wireless device working properly?

    - by JonnyTruelove
    I am using the rtl8192cu chipset (on a Belkin wireless USB adapter N300) combined with 64 bit architecture and the 3.8 kernel. Some of you may know that this doesn't work. I tried this fix - RTL8188CU USB Network Adaptor on ubuntu 13.04 and now my internet is super slow. I am totally new to Ubuntu and I am concerned I do not have the right driver. The "stock" driver was the RTL8192cu, but it didn't connect 99% of the time and if it did the upload speed was higher than the download. Right now I am connecting through my laptop with a crossover cable, so my internet connection is just fine in my apartment. Relevant output from lsusb is here: Bus 002 Device 002: ID 050d:2103 Belkin Components F7D2102 802.11n N300 Micro Wireless Adapter v3000 [Realtek RTL8192CU] (bonus question: is that [050d:2103] the actual physical address straight from the hardware? Or does it change when I put different drivers on it? I am concerned I do not have the right driver)

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  • ubuntu nic card issue

    - by Blainer
    I am trying to install NIC r8168 and it shows everything installed ok. It is a brand new NIC and the lights wont come on when I plug in a ethernet. The NIC is that is not working is eth0. Why does it show the r8168 driver being used by 0? My NIC model number is ST1000SPEX if anyone is wondering. lsmod Module Size Used by r8168 215669 0 ifconfig eth0 Link encap:Ethernet HWaddr 00:0a:cd:1e:0a:4a UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) Interrupt:43 Base address:0x2000 eth1 Link encap:Ethernet HWaddr 00:19:d1:1d:f6:7a inet addr:192.168.1.83 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::219:d1ff:fe1d:f67a/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:551467 errors:0 dropped:0 overruns:0 frame:0 TX packets:145219 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:409744342 (409.7 MB) TX bytes:12233173 (12.2 MB) Interrupt:21 Memory:dfde0000-dfe00000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:280 errors:0 dropped:0 overruns:0 frame:0 TX packets:280 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:22608 (22.6 KB) TX bytes:22608 (22.6 KB) Ubuntu 11.10 x64 Kernel 3.0.0-12-generic

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  • UFW blocking random packets on 443

    - by s2jcpete
    All, I have UFW setup to allow traffic on port 443. It works as expected, though I have a large amount of UFW Block log entries. To Action From -- ------ ---- 80 ALLOW Anywhere 443 ALLOW Anywhere 22222 ALLOW Anywhere 80 ALLOW Anywhere (v6) 443 ALLOW Anywhere (v6) 22222 ALLOW Anywhere (v6) However in my syslog file I see this: [UFW BLOCK] IN=eth0 OUT= MAC=XXX SRC=<foreignip> DST=<serverip> LEN=40 TOS=0x00 PREC=0x00 TTL=116 ID=22025 DF PROTO=TCP SPT=49622 DPT=443 WINDOW=0 RES=0x00 ACK RST URGP=0 About 30 or so seconds later pound (which I'm using for SSL decryption and port redirection) throws a connection timed out messsage. I'm assuming this is because UFW is blocking the packet. I'm at a loss as to an explination. Could the packet be malformed or something, is this normal? Edit - I have since changed the /etc/defaults/ufw and set ipv6=no, so the v6 rules are no longer in the mix. The server is still showing the block / connection timed out behavior though. The new ufw status output is: Status: active Logging: on (low) Default: deny (incoming), allow (outgoing) New profiles: skip To Action From -- ------ ---- 80 ALLOW IN Anywhere 443 ALLOW IN Anywhere 22222 ALLOW IN Anywhere

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  • Network print to brother MFC-7420

    - by trampster
    I am trying to pint to a Brother MFC-7420 from my ubuntu 10.04 machine. The brother is attached to a windows XP machine and is shared. This is what I have tried: System-Administration-Printing, Add, Expand Network Printer, Windows Printer via SAMBA, Browse (I can find the printer no problems here), Foward, Choose Driver Dialog, Brother, My printer is not in this list So the next thing I tried was to download the printer driver from here http://welcome.solutions.brother.com/bsc/public_s/id/linux/en/download_prn.html The driver installed fine but my printer still does not appear in the list. I also tried installing the cups wrapper but that gave the following error. Restarting Common Unix Printing System: cupsd [ OK ] cp: cannot stat `/usr/share/cups/model/MFC7420.ppd': No such file or directory dpkg: error processing cupswrappermfc7420 (--install): subprocess installed post-installation script returned error exit status 1 Errors were encountered while processing: cupswrappermfc7420 I tried connecting the printer directly but even though I have installed the driver, when I go to printers and click on the printer (it shows up fine as a USB printer) then it say searching for drivers and then gives me a list, this is the same list as before which doesn't have my printer. It really shouldn't be this hard. on window you don't have to installing anything it just works and the same is true for my brothers Mac. How do I print to my printer?

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  • wired connection not being recognised in ubuntu 10.04 lts

    - by arun
    I have windows7 installed on my C drive and ubuntu 10.04 lts on my D drive. When I plud the lan cable (ethernet cable) onto the ethernet card of my laptop, windows7 identifies the network correctly without the need for any manual settings and connects me to the network correctly. Unfortunately, in ubuntu, even after plugging in the cable, nothing happens (on the network side). It is only scanning for wireless networks it seems, and doesnt bother about the wired networks. I tried adding a new wired connection and manually entered the physical address which was displayed when i connected to the network using windows. i entered the phy address, and told it to use auto dhcp and saved the dialog bog in ubuntu network connection. Still there is no change, and ubuntu doesnt seem to recognise anything. please let me know how to work with wired connections using ubuntu, and why my wired cable is not being recognized in ubuntu. thanks. PS: I am pretty new to ubuntu/ linux :)

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  • WiFi slow sometimes, reboot helps, how do I debug it?

    - by January
    Ubuntu 12.04.1 with all updates installed. Laptop Lenovo Thinkpad X230 with Intel Corporation Centrino Advanced-N 6205. WiFi sometimes becomes extremely slow. Often this occurs when I wake the system from suspend and connect to a different network. I find no obvious clues in system logs. /etc/init.d/network-manager restart doesn't help, but a reboot does. How can I go on with debugging this issue? In specific, which parts of the system should I try to restart (without a complete reboot)? I know of problems with Intel WiFi (see for example this question and the instructions here), but if that was the problem, I would expect the WiFi to be slow at all times, and not just sometimes. Also, I have a gut feeling that it might be a DNS issue (for example, getting a page from a known server is faster than accessing a new server), but I don't know how to tackle it. Update: despite numerous updates in the meanwhile, I still observe this behavior. It happens always when I access my WiFi router at home after returning from work; when I reboot my laptop, the connection speed is good again.

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  • atheros ar8161 not recognized

    - by Paul
    Apparently I am not the only one with this problem. This was my solution, but it did not work, of course. I downloaded the tar from another computer. I found the file of the atheros driver that I needed which is apparently atl1c. I put that file on my ubuntu desktop. I ran the following in the terminal: cd ~/Desktop atl1c make sudo make install I am sure that some of you will find this code laughable, but isn't there a simple code I could use once I have the atl1c folder on the desktop?

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  • Internet unusably slow with Realtek Semiconductor Co., Ltd. RTL8111/8168B card

    - by user42424
    So I have recently installed Ubuntu 11.10 for a dual boot with wind 7. After the install I had like 300 updates, so I installed them. At first I could use the internet, although it was extremely slow. However now I cannot, sometimes it will load and others it will simply time out. When I try to download something it will either take forever or will not at all. This is a wired system. On Windows side my speeds are fine. Any help would be greatly appreciated. Also like I said I am new to Linux/Ubuntu so please be nice. One last thing, I also installed 11.10 for same dual boot on my laptop, and wireless speed is the same as on Windows? Only the wired desktop gives me the problem? Hear is some hardware info.. Hope it helps. Mobo: Gigabyte GA=880GMA- AMD / CPU: AMD Phenom (tm) IIx4 965 / 16 GB Ram / Realtek PCIe GBE Family Controller / Cisco Linksys E2000 / Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06) / eth0 Link encap:Ethernet HWaddr 50:e5:49:33:64:cf inet addr:192.168.1.118 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::52e5:49ff:fe33:64cf/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:76722 errors:0 dropped:76722 overruns:0 frame:76722 TX packets:49692 errors:0 dropped:65 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:107956638 (107.9 MB) TX bytes:4342553 (4.3 MB) Interrupt:44 Base address:0x2000 thanks to roadmr problem solved! I powered down PC, un plugged power from pc end, waited a few (maybe 3)minutes. plugged power back in, pushed and held power button for 30 + seconds. Let go, powered on PC, and my Internet is fine! downloads and web speed blaze, just like on my Win 7 boot, maybe even faster. Problem Solved, Thanks to all!! **

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  • connecting ubuntu with 7 via network cable

    - by VeXe
    i was tryin to connect my ubuntu toshiba satalite L650 laptop with my desktop via a network cable so that i can share things and remotely control the desktop from the laptop, i googled the problem out and found a guide page , i followed all the steps , i installed samba, i had the two computer have the same workgroup name , i had everything correct, but i still dont see connection estbalished between the two computers, (neither one is visible to the other) what is missing ? thanx in advance.

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  • When Ubuntu Server restarts eth0 Doesn't come back up

    - by JoelGsus
    Every time I restart my Ubuntu Server 11.10 I can't ssh into it because ETH0 doesn't come up automatically. I never had this problem before upgrading to 11.10. I have to login to the server and start the ETH0 manually. I would appreciate it any help. Thanks. Here is my /etc/networks/interfaces file: #The loopback network interface auto lo eth0 iface lo inet loopback # The primary network interface iface eth0 inet static address 192.168.1.102 netmask 255.255.255.0 broadcast 192.168.1.255 network 192.168.1.0 gateway 192.168.1.1

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  • No Sound from Shared Media

    - by Travis
    I have a shared media folder that I have all of my mp3's in. When I try to play them using Ubuntu, I get no sound, but the media player (Rhythmbox, Exaile, etc) display that they are playing the file, it looks like everything is playing but no sound. I have checked and rechecked the volume levels of the system and each application and I see no issues. If I move a file to the local drive, it plays just fine. I do sound checks while the file is playing and I get audio (front left, front right) from the test but not from the media file that I am playing. Any help would be greatly appreciated.

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  • audio and video data in RTP

    - by Banana
    Suppose a user wants to transmit both audio and video to another user, whose formats are AMR for audio and H.264 for video. Does the user have to transmit audio and video packets always separately? Meaning that it is not possible to mix audio and video within the same RTP packed, is that correct? If this is true I guess the RTP protocol will need to know the SSRC of both audio and video to be able to check the sync of the two streams.

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  • How do I re-install Samba?

    - by Sheldon
    I recently followed a guide to configure Samba but I couldn't get it configured properly. After realizing that the guide was six years out of date I thought I should start again. I reinstalled samba by first using these commands: sudo apt-get purge samba sudo apt-get install samba But after reading my configuration file (/etc/samba/smb.conf) I noticed that it was the same file, containing the same edits I had made. I then proceeded to delete the directory and then re-install samba again. However, the directory is not replaced after re-instillation and now I don't appear to have a configuration file. How do I get it back? Or install Samba correctly?

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  • no wifi after grub 2 crash

    - by Omu
    on ubuntu 10.10 I used StartupManager to set windows 7 as the default boot, also chosen the 1024x768 resolution, 16 bit, time: 3sec, and checked "show splash screen". after the restart there was no GRUB menu at all, windows 7 booted, and in windows the clock was 0:03 instead of 10:03, also the wifi doesn't sees any connections anymore I reinstalled ubuntu 10.10 so the GRUB menu is back, changed the clock back from BIOS, but my wifi doesn't sees any connections in windows nor in ubuntu (I write this from another computer)

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  • IP/PORT forward requests to another server

    - by DT.DTDG
    I have the following listening PORT:IP set up on my UBuntu server. 12.345.67.890:3636 It receives requests perfectly, however, I would now like to forward any requests to that IP:PORT to another IP:PORT, i.e.: 09.876.54.321:3636 Essentially I want to do a request forward 12.345.67.890:3636 -> 09.876.54.321:3636. How can I go about it in Terminal and if I wanted to change it back how can I go about that too? Is there also a way to test that the data is forwarding and it is setup properly? Thanks! Edit: Can I just do as follows, just wondering how I would go about testing it and how I could disable it? sysctl net.ipv4.ip_forward=1 iptables -t nat -A PREROUTING -p tcp --dport 3636 -j DNAT --to-destination 09.876.54.321:3636 iptables -t nat -A POSTROUTING -j MASQUERADE

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