Ubuntu Installation :: Proxy Configuration - Running Apt-get Update Due To A Firewall At Work
Jun 24, 2010
I think I have encountered a problem in the way that lucid handles proxy servers. I was having problems running apt-get update due to a firewall at my work. I also noted that I was getting 403 Forbidden for wget. So I went to System -> Preferences -> Network Proxy from my account (which has administrator privileges) and input the http address for the proxy server, and then clicked the button to "Apply Systemwide...".
Following that change, wget worked from my account, but whenever I tried to sudo apt-get update, I got the 403 forbidden response again, even though I could wget the same files that apt-get reported as forbidden. I figured that this was a problem with the root account, and so I typed
Code:
However, upon exiting from the root account, and trying to run sudo apt-get update again, I got the 403 forbidden code again!
So, it seems that the proxy settings are not being applied systemwide.
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Jan 29, 2011
I've got a Shorewall (Shoreline?) firewall up and running, but it's logging to /var/log/messages. I'd much rather have it logging to another location e.g. /var/log/firewall but can't find (a clear enough) explanation on how to do this. Apparently, it varies greatly depending on the distro, the kernel, and the version of Shorewall that is running. You'd think it would be something as simple as setting a path in a config file, but apparently not. I'm running a stock Lenny kernel on the firewall machine. It comes with version 4.0.15 of Shorewall.
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Jan 25, 2011
I will be relocating to a permanent residence sometime in the next year or two. I've recently begun thinking about the best way to implement a home-based network. It occurred to me that the most elegant solution might be the use of VM technology to eliminate as much hardware and wiring as possible.My thinking is this: Install a multi-core system and configure it to run several VMs, one each for a firewall, a caching proxy server, a mail server, a web server. Additionally, I would like to run 2-4 VMs as remote (RDP)workstations, using diskless workstations to boot the VMs over powerline ethernet.The latest powerline technology (available later this year) will allow multiple devices on a residential circuit operating at near gigabit speed, just like legacy wired networks.
In theory, the above would allow me to consolidate everything but the disklessworkstations on a single server and eliminate all wired (and wireless) connections except the broadband connection to the Internet and the cabling to the nearest power outlets. It appears technically possible, but I'm not sure about the various virtual connections among VMs. In theory, each VM should be able to communicate with the other as if it was on the same network via the server data bus, but what about setting up firewall zones? Any internal I/O bandwidth bottlenecks? Any other potential "gotchas", caveats, issues? (Other than the obvious requirement of having enough CPU and RAM).Any thoughts or observations welcome, especially if they are from real world experience in a VM environment. BTW--in case you're wondering why I'm posting here, it's because I run Debian on all my workstations/servers (running VirtualBox as a VM for Windows XP on one workstation).
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Dec 23, 2015
I can not to start dnscrypt-proxy-1.6 like server.
I use the man: [URL]
The man work for dnscrypt-proxy-1.2. It was work good. On latest version the man don't work.
I want that my DNS server is work well work.
uname -a
Code: Select allLinux raspberrypi 4.1.13-v7+ #826 SMP PREEMPT Fri Nov 13 20:19:03 GMT 2015 armv7l GNU/Linux
cat /etc/dnsmasq.conf
Code: Select alldns-forward-max=500
bogus-priv
resolv-file=/etc/resolv-dnsmasq.conf
no-resolv
listen-address=192.168.1.5
bind-interfaces
cache-size=600
[code]....
My system is Reaspbian (Like debian but for Raspberry pi 2).
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May 1, 2010
I have installed openusese 11.2 since about 2 months ago. Everything running well. But since the network admin deploy proxy server, I couldn't get update than.[URL]this problem, was that related to proxy settings?Or did I miss something else?
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May 4, 2010
i have set up apt-cacher-ng and it is working fine.I have configured the clients using the synaptic gui, (configuration-preferences-network-set proxy...)Is there a way to configure the clients so that they use the proxy when it is available (at the office) and they fall back to using no proxy when the proxy cannot be reached?We have a lot of laptops at the office which are on the road a lot, in the office i want them to use apt-cacher-ng for updates and installation, when the users are not in the office they should be able to install software without having to change the synaptic conf...
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Feb 6, 2009
What is the best method to upgrade Fedora from 8/9 to 10? I have the DVD, and whenever I try to boot from the DVD it locks up the PC after selecting the default language stuff. I've run the media check on the DVD, and it passes with no problems. I am behind a firewall and for some reason the configuration is not allowing YUM to get through the firewall, but Firefox can get through (I have another post for this issue).
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Apr 13, 2011
i have download debian 6.0.1 DVD, and installed corectly,i am using internet behind proxy, but i configure all the things thier and i still can ping to google from CLI bt i could nt update my system
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Apr 6, 2011
I need to restrict access to the internet and keep unwanted software out of LAN with 45 workstations at the school I teach at. I thought about configuring a proxy and firewall on SuSE 11.4?
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Feb 11, 2010
how to implement proxy server with firewall and the client users should be authinticated by asking username & password while opening their web browsers and finally i want to see the websites visted list of all the client computers On cent os 5.3
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Jun 17, 2011
I wanted to implement a server for a small network, but am a bit in-experienced. The server that I want to use should be able to do load-balancing (two connections) and also act as firewall/proxy. And also it should be able to do some bandwidth management. The network that its going to serve has two parts. One part of the network should be served, say during day time,and the other during night time. The one that is going to be served at night-time should not have access to internet during day-time, but should have access to, say local mirror-server. I am a bit confused what software/hardware to use. I am planing to use EndianFirewall, but since I don't have experience, don't know if it can do all that I need (?).
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Feb 4, 2010
When I enable UFW Configuration, in a programme called Firewall Configuration, runs along with the System. Now, I configured it such that it can run along with the Session. Now, Ubuntu is already secure. So, is there any need for additional Firewall like this? (ufw is already present in Ubuntu, and this only Configures it). And, is it required to have it enabled always for keeping the Firefox running? (Because It may consume System Resources). Or, is there any other firewall that consumes less System resources or runs at the Background?
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Aug 1, 2010
If this gets moved I apologize for putting it in the wrong place...Purpose of server: RED GREEN ROUTER for SOHO or PARENTAL CONTROL Block known bad URL,IP... ie porn, malware, ads, others Block Good URL,IP if Desired by OWNER Scan mail protocols for viruses out and in if out is found log and mail MASTEROSSIBILTY??? scan all protocols in and out for viruses n block log out block log and mail MASTER a server build log and possibly a step by step assist for new users.Version of ubuntu server 10.04Hardware Gateway Pentium 4 2 network cardsUse of server RED GREEN ROUTER FIREWALL that blocks site list from shalla and my own list. general use would be for SOHO or Parental controlpick language...pick it again???...country...no...country for kb...kb layout...eth0(as RED)me it...timezone...HDD choice(i used guided-use entire disk)...user...proxy if needed(not for RED GREEN ROUTER!!!)...updates(i picked auto)...LAMP,openssh, mail server ...sqlpassword...grub...done
then
login as user/pass created in install
run following
[code]...
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Feb 22, 2010
I'm looking to setup a web proxy using squid.I already have a hardware firewall NAT'ing device that all the connections go through.I'm planning to install the squid web proxy on a VM (single nic) and place it behind the hardware firewall as below:internet -- modem -- Firewall --switch--squid proxy (192.168.10.100)--client workstation ((192.168.10.200)(client workstation is connected to the same switch as the squid proxy)And on the client workstation's Internet Explorer: Tools->Options->Connection-Lan Settings and check the box for "Use a proxy server for your LAN then type the address of the squid proxy (192.168.10.100) and set the port to 3128. Check the box for Bypass proxy server for local addresses.
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Aug 19, 2010
I have a firewall / proxy that has an extremely high load, but I can't figure out what's using it. No real cpu usage, the disks are sleeping except for a little log activity, it's on gigabit ethernet and not close to maxing out... Command link stuff runs fast, nothing seems slow, yet the load is sky-high. IME this kind of load is associated with a lot of disk I/O, but that's not the case here. What could be causing this, what else factors into the load?
uname -a:
Code:
Linux myfirewall.mydomain.com 2.6.8 #1 SMP Mon Oct 18 11:20:22 CDT 2004 i686 i686 i386 GNU/Linux
top:
Code:
07:55:43 up 1503 days, 17:13, 5 users, load average: 26.50, 26.33, 26.25
Tasks: 245 total, 2 running, 243 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.6% us, 1.1% sy, 0.0% ni, 95.0% id, 2.7% wa, 0.2% hi, 0.5% si
Mem: 3895508k total, 3582272k used, 313236k free, 207468k buffers
Swap: 2040244k total, 112664k used, 1927580k free, 1358744k cached
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Mar 13, 2011
after initating the update and i enter my pass word, update stops and an error box comes up stating that it is unable to update because there is more than one synaptic manager running, i have restarted and get the same results, and to my knowledge there is nothing else running in the background.
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May 16, 2010
I recently (yesterday) did a clean install of 9.1 (karmic koala) on my system. After having struggled with various video driver issues with my 7800GT and getting the proprietary nvidia drivers installed, everything seemed to be working fine. Today I ran some updates and now when the system boots, it crashes down to a text login prompt.
when I try to run startx from the command prompt, I get:
Code:
FATAL: Module nvidia not found.
(EE) NVIDIA: Failed to load the Nvidia kernel module. Please check your
(EE) NVIDIA: system's kernel log for additional error messages.
(EE) Failed to load module "nvidia" (module-specific error,0)
[Code].....
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Mar 26, 2010
While running the update manager my system froze and all that I knew to do was power down and power up again. When I first started the update said 18.5 MB and on restart it said 17.x MB. I restarted the update manager and it failed with errors.
The last message says "E: Sub-process /usr/bin/dpkg returned an error code (1) A package failed to install. Trying to recover:" but no progress in 1/2 hour. If I try to copy the messages to the clipboard it says that cntl-c will abort the operation so I haven't done that. From the top of the "Details" there are about eight "Invalid archive signature" messages. I don't know how to proceed.
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Oct 13, 2010
Everything works well when executing:
Code:
sudo apt-get update
sudo apt-get upgrade
When executingsudo apt-get dist-upgrade
I get this
[Code]...
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Apr 20, 2011
i've just installed squeeze on my lenovo t61 laptop. i've noticed one of my cpu's running at 100% (even in idle) from time to time.
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Jan 7, 2010
I was running the Update Manager when my system froze due to the failure of Karmic to support motherboards using the Intel 845 chipset.
Although the update did not complete when I rebooted and invoked Update Manager it reported that the system was up to date. How do I reset the system so that I can install the updates?
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Feb 18, 2010
I'm a little bit stuck and in need of advice from people who know what they're talking about. I've had Ubuntu on my office PC, home PC and laptop for about a year now and never had a problem that I couldn't solve, until now. I'd not turned my laptop (Lenovo N 500 with Ubuntu 9.10 64 Bit using GRUB2) on for about a month so when I did on Monday of this week I noticed that I'd not updated Ubuntu for 27 days, so ran the update manager. After everything was updated I carried on using it as normal but when I tried to turn it on yesterday I get the following issue...
GRUB loads and gives me all the possible boot options. Whatever one I choose, I get the same results. It starts to boot (I see the black screen with the white Ubuntu logo) but this remains on the screen for a very long time, then it goes to a flashing cursor at the top left of the screen and it just sits there indefinitely.
I've tried playing with Super GRUB Disc but admittedly I'm not too sure what I'm doing with it. I've tried using the Ubuntu Installation disc as a Live CD too but with no joy. The main HDD appears fine when in Live CD mode, all my files are there etc.. Is this actually a GRUB issue or something else? It's like GRUB's doing its bit and then it's failing slightly further down the line.
I'm totally out of my depth here and really don't want to have to reinstall everything, I'm sure there's a simply solution.
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Aug 3, 2011
After installing windows XP,I did some googling to try to get ubuntu back,but seems messed something up. Right now,every time to boot system,I have to press "e" on first entry in boot menu,then press "e"s to do these two modifications to startup ubuntu corrently:
1,root (hd0,0)
----------------------------
(hd0,0) ===>> (hd0,4)
----------------------------
2,kernel /boot/... root=/dev/hd0 ro ..
[Code]....
2,then try to modify /boot/grub/grub.cfg: change all root (hd0,0) to (hd0,4)
(don't know and find where to change:"kernel /boot/... root=/dev/hd0 ro ..") and restart,thing is being same as before,so how can I get gr ub2 configured right?
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Oct 31, 2009
I keep getting this error when I try to run the auto update. b43 conflicts with broadcom-wl
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Jul 1, 2010
Is there a firewall installed and running in 10.04? If so are there any gui tools for configuring it and where are they? If there is not a firewall, what should I install to get one properly up and running?
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Jul 19, 2010
I'm running 10.04 without having installed a firewall is that ok? because, i'm also bugged by audio/video and mouse problems which build up and i must warm boot to remedy. (although the drum fanfare at start-up doesn't sound quite right ether?). furthermore i would like to open the port for my torrent client Transmission, but the elements of the web pge (192.168.1.1) are flickering.
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Mar 2, 2011
if you are running Apache on a firewall system, perhaps to display a web front end for firewall configuration, how would you make sure that it is accessible only from inside the local network?
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May 14, 2010
IBM ThinkPad X61
Windows Vista Home
Wubi Ubuntu Karmic
I tried to upgrade to Lucid Linx while in Karmic Koala but the installation process froze while doing something with "memtest86+". CTRL-C got it to unfreeze and finish the installation but on a restart when I chose the Ubuntu OS it kept restarting rather than booting. I decided to start fresh.
So I booted into Vista and uninstalled Wubi Karmic Koala and proceeded to do a fresh install of Wubi Lucid Lynx. The installation, including the reboot, went smoothly. However, when the Update Manager was installing software a new screen popped up saying this:
Window Content:
[Title:] Debconf on Ubuntu
[Message:] Configuring grub-pc
[Checkbox:] Continue without installing Grub? (unchecked)
[Help button: explains consequences of not installing grub]
[Back button] (greyed out)
[Forward button]
So I leave the checkbox unchecked and click on forward. Nothing happens. All the Update Manager windows remain the same and nothing changes when I hit the Forward button. The "Applying Changes" window is stuck at "Setting up grub-pc (1.98-1ubuntu6) ...".
Can I safely force quit the Update Manager installation? Why am I getting that message about Grub? I didn't choose anything like that.
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Jun 18, 2011
Im running Ubuntu 10.10 32 bit and Grub2. When running the update manager, I get the following message while it is configuring grub-pc: The Grub boot loader was previously installed to a disk that is no longer present, or whose normally unique identifier has been changed for some reason. It is important to make sure that the installed Grub stays in sync with other components such as grub.cfg...I change my hardware, including hard disks, frequently so that is likely the cause. My computer still boots but I like to fix this if possible. My disk partitions are:/dev/sda1/boot/dev/sda2/ /dev/sda3/home
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Jun 7, 2011
I am going to wipe off Windows from my laptop & install only Ubuntu 11.04. Do I need to install a antivirus system, I know about the firewall form ubuntu software centre i.e. firewall confiiguration.
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