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I'm trying to set up Ethernet on a university pc with Ubuntu 16.04. There are university wide proxy, and I connected 2 other windows PC's to it using .reg file, proxy adress, port and login, password, which I was provided by the university. I tried setting proxy adress and port, using gui (as I did for windows) but it's just doesn't work. Firefox says "Unable to find the proxy server" or sometimes "we're having trouble finding that site" and ping 8.8.8.8 says "Network is unreachable" ping google.com says "unknown host". ifconfig says:

enp6s0 Link encap:Ethernet HWaddr 1c:6f:65:91:3e:4a UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:13462119 errors:0 dropped:16 overruns:0 frame:0 TX packets:351453 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:893149471 (893.1 MB) TX bytes:71061986 (71.0 MB) 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:65536 Metric:1 RX packets:6683368 errors:0 dropped:0 overruns:0 frame:0 TX packets:6683368 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:494614018 (494.6 MB) TX bytes:494614018 (494.6 MB)

All 3 PC's are connected to the same lan hub and I tried to switch ports and cables around and nothing changed, on windows internet works and on linux it doesn't. Also, for some reason connection just turnes off every couple minutes or so. Lan cable 100% works. first time Linux user, any help would be of great use.

.reg file contains:
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"AutoDetect"=dword:00000000
"MigrateProxy"=dword:00000001
"ProxyEnable"=dword:00000001
"ProxyServer"="my_proxy_ip:3128"
"ProxyOverride"="some sites"
(redacted proxy ip and override just in case)

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8
  • What type of proxy is it ? Yes maybe provide the .reg file content Commented Mar 29 at 9:45
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    Fix your network connection first, as, concluding from the failed ping and DNS query, it is not working. Commands from the command line: ifconfig or ip address Commented Mar 29 at 9:55
  • Added .reg content and ifconfig result Commented Mar 29 at 17:46
  • Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Commented Mar 31 at 9:34
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    You've made a typo. The ifconfig command will never say "no wireless extensions". That would be the iwconfig command instead... and that is an old command for configuring WiFi interfaces only. For wired interfaces, you'll want ifconfig, not iwconfig. Commented Apr 11 at 5:39

1 Answer 1

Reset to default
0
  • Open Ubuntu Destop Settings.
  • Select Network->Proxy.
  • Activate Network Proxy setting (switch to On)
  • Select settings to Manual.
  • In the corresponding fields (HTTP, HTTPS, FTP, and/or SOCKS host), enter the proxy URL and port.

If you're using Ubuntu GNOME, it's quite the same procedure

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6
  • Did exactly that in the first place, didn't work Commented Mar 29 at 17:27
  • What type of proxy is it ? A PAC proxy ? Commented Mar 30 at 18:44
  • I really don't know Commented Apr 6 at 22:01
  • Ok, the network admin at university must share this information. What is the actual port of the proxy ? 3128 ? 8080 ? 1080? ?? Commented Apr 7 at 6:11
  • It is 3128 (updated it in actual post) Commented Apr 11 at 1:14

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