im looking at changing the computer systems over to Ubuntu, at a scout campsite im staff at. i have sorted some filtering out with dansguardian.
but how do i limit the powers of users, so remove all the administrative side and most importantly stop a user changing the network proxy setting.
i have used ubuntu before but not for a while, so im a bit of a newbie atm.
I tried to place a mono icon in usr/icons/etc but I didn't have the permission to do so. I tried to change my user profile to Admin, thinking I could go back to custom, but that hasn't and it isn't allowing me to go back to my previous setting.
Within minutes of being an Admin user I noticed I couldn't even unmount something. I really need to figure out how to change my profile back to default.
After that has been dealt with, I would like some guidance on how to gain root access to put my icon where it needs to be.
I think there is an application which lets you set the proxy settings for all applications. I remember seeing something like this in Gnome's network menu but now I'm using XFCE.
View 1 Replies View RelatedMy work has got a new Sharp MX-1800N network printer. The setup requires user authentification, one password for printing b&w, another for printing color. However when they try to set up my netbook running ubuntu desktop 10.04 they don't get it to prompt for a password, which makes the printer reject the printout. How do you fix this?
View 5 Replies View RelatedI am trying to give access to ONE single user to start and shutdown tomcat server. The problem being, when I enter syntax: username ALL= /etc/init.d/tomcat5, /usr/local/tomcat/webapps, PASSWD:ALL This gives the user access to start and stop tomcat but also gives user access to start and stop other services within /etc/init.d - such as httpd etc... What is the proper way to give user access to start and stop service, and limiting that power to only one service....
View 2 Replies View RelatedI think I selected the wrong time during the installation and now at the top right corner, my time keeps changing back to one hour ahead. Not sure why.I've went into the Preferences of the Time/Date > Time Settings > and set an hour back manually. I check back in 30-45 minutes, it's back another hour ahead. I'm on a Dell Inspiron 1545.
View 1 Replies View Relatedis there anyway for me to dl a proxy or use a proxy on ubuntu? other than the web based ones. i looked into using system->preferences->network proxy, but that stuff went way over my head. can someone explain this to me? how would i go about setting up a proxy for the web and using it effectively?
View 4 Replies View RelatedHow do I stop users from changing their background? I'm installing ubuntu on some (non-networked) computers at my school, and I don't want the students to change the background on the desktop. I don't care if they change it during their session, but it must revert to the default when the session is logged-out or shutdown.
View 1 Replies View Relatedcreated a user but i forgot to change the home directory permission.so after user created when i go to the user and group mangement i cant see that permission filed related to the home permission directory.my purpose is to stop accessing other user to my home directory,how it can be possible??
View 4 Replies View RelatedWhen I start Ubuntu, file explorer windows look like they should.
Then, after about 15 seconds, the windows manager automatically switches to a greyer, bulkier design
How can I stop this behaviour?
I am using Ubuntu 11.04 as a guest OS in Virtual Box 4.0.12
I followed this guide: [URL] and restart the Squid Server with no errors but when I try to SSH into it:
Code:
ssh -L 8080:squidserver:8080 user@squidserver
It just hangs there for a long time, not timing out and eventually (after a long wait) I get this:
Code:
ssh_exchange_identification: Connection closed by remote host
What could be the problem? I can SSH normally into the computer, but not into the proxy server. Do I need to forward the 8080 port on that network?
Ubuntu 9.10 10.04 "software center" seems like a good idea compared to the previous implementation but it ignores proxy settings under system->preferences->network proxy and system->administration->synaptic package manager->settings->preferences->network.
Other sections of Ubuntu work fine through the proxy e.g. web browsers and using synaptic directly. However sudo apt-get install doesn't work through a terminal on Ubuntu 10.04 beta despite all updates. problem is definitely in Ubuntu as some parts of it recognize the proxy settings and other parts don't. This disconnection appears to be worse in U10.04 compared to U9.10 but earlier distributions (from memory) never had this problem. Is there a "fix" I can use to get Ubuntu 10.04 to recognize the proxy settings across all its features?
I used windows OS and installed Ubuntu 10.04 (amd64) in separate partition and works well but had a problem in internet connectivity. Likely reason may be the proxy setting that we used in college (currently). I used this commands to set up the IP address and gateway.
ifconfig -a | grep eth
"eth0"
sudo ifconfig eth0 192.168.5.209 netmask 255.255.255.0
[code]....
Then I manually set the proxy setting of HTTP which is given as proxy server 192.168.5.2 and port as 8000, further more there is a wins setting which is 192.168.1.178, really don't know where to put this number.
Setting up an Internet proxy In the past I had set a computer to act as an Internet proxy. This would be multihomed, and running dansguardian, tinyproxy and firehol. Then webmin would be used as interface. By time I realised that this system is far from effective. Is there some other way to setup a proxy to be placed between users and the Internet? I would like (the admin) to be able to see in which sites users go and have a lot of control on access..
View 2 Replies View Relatedhow to lock down individual users from setting a proxy server. Its a server not a WS so it should never go to the internet. I want to lock down the system side and firefox 5 settings. found this link but its a bit confusing. I want to lock the system and mozilla Locking preferences - MozillaZine Knowledge Base I tired this and put the local-setting.js in and now the firefox wont start at all. "failed to read the configuration file. Please contact your system administrator. well read several sites that all say to do the same thing but they are talking windows and mac so may be i am missing something being Linux...So what I did was create a file called
/usr/lib64/firefox-3.0.12/defaults/profile
more mozilla.txt
//
[code]...
Still get error.this link explains what the setting 0-5 are used for Network.proxy.type - MozillaZine Knowledge Base So i thought this might be a permission issue and did a 777 on the local-setting.js file. Still get the error.
my linux box in the office has an a proxy server to access the internet. i can set this on my browsers. id like to know how i give my shell (bash) the proxy server settings so i can wget,yum install perl modules, etc. on my shell terminal without problems.
i used
Code:
export http_proxy=http://<proxy-server-ip>:<port>
for example
Code:
export http_proxy=http://bsc.aut.ac.ir:8080
and also i did this for ftp. but i doesn't work.
I am playing around with transparent proxies, unfortunately I do not have two machines to test it out with. The current way I am doing things is the program makes a request to a computer on port 80, I use
Code:
iptables -t nat -A OUTPUT -p tcp --destination-port 80 -j REDIRECT --to-port 1234 to redirect to my proxy that is listening on port 1234. The proxy will send out a request to port 81 (as all outbound port 80 are being fed back in to the proxy and if it sent out to port 80 it would just be a infinite loop) so I want to do something like
Code:
iptables -t nat -A OUTPUT -p tcp --destination-port 81 -j DNAT --to-destination xxxx:80
The problem lies with the xxxx part. How do I change the destination port without changing changing the destination ip?
I have recently installed tor + vidalia + privoxy on my maverick system. What I was hoping to do was set up transparent routing through tor using the instructions here - [URL] But Ive had no luck with any of the examples given. When Vidalia tries to connect it stops at the point of generating a tor circuit and never gets any further.
View 1 Replies View Relatedi want to setup a proxy authentication on fedora 15 for minimum of 5 users using squid but i had successfully setup a proxy sever on my system and its working perfecly.# vi /etc/squid/squid.conf this was the output.
# Recommended minimum configuration:
#
acl manager proto cache_object
acl localhost src 127.0.0.1/32 ::1
[code]....
where will i entered the configuration and what are the configuration?
I'm still working on ubuntu 9.10 with an acer aspire 1810tz. To use my microphone I found out that I have to change my microphone settings because it's mono and the default setting is thinking it's stereo: With the Volume Controller I setup one chancel to 5 and the other to 90 and the mic is working fine. Starting Skype and using it I see that the setting is reducing the volume for the mic below 20, so nobody can hear me. I tried closing first Volume Controller and then starting Skype, no matter the volume of the mic is reduced. How do I stop this behavior?
View 2 Replies View RelatedI have to keep changing back to Packman packages because updates changes vendor all the time....is there a way to switch to Packman packages and have it stay that way? Any zypper settings?
View 6 Replies View RelatedI was willing to create proxy in between the web app. and MySQL database so that I can do some modification before sending the query to the DB. But how to grep the query in the middle isn't working in the head yet. I found a tool named 'greensql' which captures the query in the middle but couldn't get how they are doing it.
View 4 Replies View RelatedI have to set up a proxy for my work's network. No computer except the proxy has a direct internet connection. The proxy will NOT be transparent so it authenticates with Active Directory and allows or denies pages. The squid proxy is up, and working accordingly, denying and allowing what's needed to who's needed. BUT! Thunderbird and Outlook didn't work, so in less than 10 minutes I was forced to fall back.
I read googling a lot, and searching a bit here about socks, which seems to be what I need but also that squid is already a socks proxy. Web pages were the concern, it's not needed that other stuff is authenticated, it might as well be transparent for Outlook, Thunderbird and other programs *for example, it's not needed to block a Warcraft III game, though, allowing it explicitly is not the point either* but as of now, none can connect *haven't actually tried Warcraft though, but stuff like Adobe's updater didn't work either and I recall someone mentioned Windows Live messenger didn't either* The Squid Proxy is a CentOS.
I am trying to install a router on my CentOS 5 box, while i have properly configured IP address, Subnet, Default GW and DNS, I am at the point of trying to set up the Proxy. I have added a line: "proxy=http:ip_address:8080/" to the file of "/etc/yum.conf" The Proxy server here does not require any username nor password however I still cannot ping any website, while I tried to ping 74.125.45.100 (google.com) it returns the following message:
[Code]....
I'm not sure exactly what happened, but starting a few hours ago, every time i open firefox,the settings have all reverted to the default. I change them back to what i prefer, then when i open it again they are back to the default.
View 4 Replies View RelatedAfter manually setting the display brightness on my laptop, the system re-sets the value. If the laptop is plugged in, the value is set to full brightness; if it is not plugged in, it is set to dimmer. How do I stop that behavior?
Note that I am not talking about what it does in response to the event of plugging in or unplugging my system. It changes on it's own - usually several minutes after I change the brightness value. I have observed this behavior on different systems, different distributions, and different desktop environments.
I'm in Gnome running Compiz, and every time i go into the wallpaper changer to switch my backgroung, within 30-45 seconds of me changing it, it changes back to some white washed out version of one of the default wallpapers.
View 5 Replies View RelatedI am configuring a proxy server in my desktop, which in turn passthough a proxy ( parent proxy ). I have added following line for this
cache_peer proxy.tcs.com parent 8080 0 proxy-only default
But for parent proxy, we have to specify username and password in this line, I am confused here.
login=userassword | PASS | *assword
Here where I have to enter username and password ?
I got a problem about network proxy setting. With the graphics setting interface, I set auto proxy with the URL address but it is weird that the setting only work with eth1(wireless), doesn't work with etho(wired). however my wireless driver is always a problem for Linux. i also tried export http_proxy= XXXXX:8080 it still doesn't work at all.
View 2 Replies View Relatedhow to lock down individual users from setting a proxy server. Its a server not a WS so it should never go to the internet. I want to lock down the system side and firefox 5 settings.
View 14 Replies View Related