Ubuntu :: How To Secure Sytem
Dec 7, 2010
I just installed Ubuntu about 3 days ago and all has been working well and I'm learning to use it more effectively every day. The reason i installed Ubuntu was because I discovered that people i thought were close to me were remotely SPYING ON ME through my computer.Apparently they had access to all my documents And could even hear and see me through my Mic And Web cam.I was using windows 7 with avg anti virus and windows firewall. I would like to be able to use my computer(with they Internet) without having to worry about people stalking me.I would like for it to be practically impossible for these scumbags to get anywhere close to my privacy. I have a router which i connect to with wifi and I'm running the latest version of ubuntu.
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Mar 17, 2011
after booting up the computer it says operating sytem not found.result of fdisk:
Code:
ubuntu@ubuntu:~$ sudo fdisk -l
Disk /dev/sda: 120.0 GB, 120034123776 bytes
[code]...
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Jun 28, 2010
Have linux 8.04 & acx111 wireless pci. Sytem sees the card but will not connect to network
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Sep 1, 2010
I'm new to Ubuntu, downloaded the version to run on the same PC as windows XP. Sytem starts straight to XP, never gives the option to start in Ubuntu.
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Mar 13, 2011
i wanted to remove the unneeded packages from my system. i was being told from the #suse irc to use zypper rm -u PACKAGE_NAME. And it worked. The point is that i want some tool to do this job but for all the packages in my system..is there something else except rmporphan?
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Sep 17, 2010
By mistake I did mke2fs to my Windows NTFS ParticionTo my understanding It has Modified the inodes only,Can I recover somehow the NTFS inodes?, I lost everything and I know the things are there.I've tryed particion recover, but that's not the problem, the particion is there, and it's NTFS, but the filesystem isnt
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Dec 1, 2010
I'm an Oracle DBA and started working for my current employer about 4 months ago. This past weekend an alert re: FS space brought my attention to /var/spool/clientmqueue (full of mail re: cron jobs) and the fact that sendmail is not running on our Linux servers.I'm told that the IT security team deemed sendmail too vulnerable so we don't run it.Aside from FS filling up and missing notification of issues with crontab entries, I'm concerned that we may be missing notification of potential issues. In other Unix/Linux environments I've seen emails from the print daemon when it experienced problems with specific jobs.
Are there other Linux facilities aside from cron and lpd that use email to advise the users of possible issues? Are there ways to secure sendmail or secure alternatives to sendmail? My primary need/desire is to make sure that emails regarding issues on the server get to the appropriate users. Secondary goal would be to have the ability to use mailx to send mail out. There is No need/desire to receive mail from outside.
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Jan 26, 2010
I set up my ubuntu server with iptables that only allows ssh in the input chain (and of course established connections) with only the mac adress of my laptop allowed to connect, set up a key with a long passphrase and installed pam_abl plugin. ICMP echo is blocked by default.
The only problem is i log all other attempts to connect to the server and i see a lot of traffic going to ports 445 and 5900.
My question is: Is there a possibility that these attempts could succeed and is there any way to further ensure this server?
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Feb 11, 2010
A) Pc-bsd
B) Ubuntu
And also which OS is more reliable?
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Mar 11, 2010
How can i secure grub 2.0 ? with grub 1 just do : grub-md5-crypt then we write password --md5 <crypted_password> in /boot/grub/menu.lst
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May 10, 2010
Is it possible at all to secure transmission?
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Jun 14, 2010
Newbie here,
I'm thinking of moving mostly to linux to get away from the security holes in Windows. And I have some questions...
How secure is Firefox for doing online banking?
Sometimes I have run into a situation where the bank doesn't support anything but Windows explorer when accessing my accounts. Can this be gotten around safely in Linux?
If so, How?
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Sep 19, 2010
Is there any way to secure harddisk accessbility ? i want encrypt my hard disk, and partitions that ubuntu installed on that. is there a way ? i want deny all access to hard disk, just my own root account can have access to all.
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Oct 18, 2010
I was wondering what the best way to secure RD would be? What's the best one to use? I'd prefer a method that isn't always active, so maybe something that I need to enable via ssh first?
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Jan 13, 2011
I have been doing a whole lot of reading on any kind of home server. I want to have a secure home server that I can access from school by a domain name. At first I was looking at FTP, but I need something secure and it seemed like the software that supported SFTP has to be purchased. Then I started looking at SSH stuff, but I also realized that I want to use a dynamic DNS, so I started reading about that.
Basically, now my head is so information-logged I can't figure out what and how I should do this. If anyone could give me some very step-by-step-procedure links (or information) that show me how to set up a secure home server that I can access with a domain name through the internet that also uses a DDNS, that would solve all my problems.
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Feb 5, 2011
I downloaded "secure-delete" from the Ubuntu Software Center, but it doesn't have any instructions, there is no website, and it does not appear in the Apps tab. I can't even begin to begin using it. How do I get this going? I haven't the faintest idea how to use the terminal programs.
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Feb 19, 2011
Ok im new, i know apparmor is running. i was looking for firestarter but their isnt one.....how do i secure this server? i want a good firewall and some virus protection!. also do i need this?
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Mar 20, 2011
The first need is to have easy cross system compatibility. Meaning Windows included. Audio/Video would be a plus, but it is not a must. I need something that goes through SSL or something like that and not in plain view.
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Apr 20, 2011
I am running Maverick (desktop edition - don't like the netbook remix) on my Acer Aspire One AO532h. I can deal with not being able to print, but not being able to get on my secure wireless network is getting to be a bother.I have AT&T DSL and am using an AT&T 2701HG-B 2Wire Wireless Gateway DSL Router Modem. If I had known that this particular 2Wire router-modem was so crappy, I'd have bought my own and tried wrestling around with that.I recently secured my wireless network and had to change the encryption from WEP to WPA so my iPad could get on it. Both my Mac desktops, the iPad, and an old Windows laptop are working fine, but not my Acer (or my XBox, for that matter). I've searched and searched for a solution and called AT&T (no Linux support :), all to no avail.
When I try to connect to my network, it goes and goes and either says that it can't connect, or shows that I'm connected, but with no signal/net capability.
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May 25, 2011
I want to set up a website that hosts very confidential business information. The info needs to be accessed by multiple people in different geographical regions. The entire website would require the high security (ie: there are no little sections that are publicly viewable). While the site will be run with Ubuntu server, I will be hosting it in Amazon's EC2 cloud.
So, if I use the HTTPS protocol with an SSL certificate, am I pretty well reaching the most secure possible situation? Are there any concerns with using the EC2 solution? Obviously there are a LOT of variables involved with maintaining website security, but I want to know if HTTPS is the current best bet (in addition to all the "best practices" of securing a site) or if there is a more robust way of securing content.
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May 30, 2011
I'm trying to setup an open-source project, I have a couple of developers on the team but nobody has experience with Apache. I would like to setup a simple home server for Bugzilla on Ubuntu 10.04, so my question is, is there a server that comes secure out-of-the-box so that simply adding files to /htdocs would suffice?
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Jul 9, 2011
i have a duel boot of windows and ubuntu, but recently i got a virus, but this things is leach like in appearance. I tried reinstalling windows, then reformatting the drive and reinstalling windows but i still have this same virus? This is dead creepy for me because windows cant read any of the other partitions, which are all formatted for linux, in formats which windows does not have the capability to read. So i dont understand how this could have happened. There are many things that i am still to try -- including completely overwriting the MBR with a GRUB in case the virus somehow resides in there?? But i have decided to give up on windows from now, because, despite all the actions i have taken, it has failed me repeatedly. But having had these viruses 3 times, i have noticed something, the first time i had a virus was my fault, because i left my computer insecure.
After i formatted my HDD following that virus, i noticed i had 10gb of space robbed from me, disk utility believed i had a 160gb drive, but Gparted and everything else told me that i only had 149.7gb of space??? now after this virus - which logically couldn't have happened without someone directly attempting to tunnel my computer as i had so much extra security - i lost 6gb of space from my HDD?? Sounds odd?
THE QUERY: So i want to know if (from ubuntu) it is possible to do a secure format (similar to with a mac - were it completely overwrites everything, instead of just deleting the links) although, possibly i am not going back to windows, ever.
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Jul 27, 2011
what is the best option to securing server via firewall and iptables?
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Feb 13, 2010
Ubuntu is based on debian unstable, but there might be some time lag before security patches get to debian testing --- so is Debian Testing more secure than Ubuntu ?
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Jun 13, 2011
I loaded Ubuntu on a Windows OS laptop and am finally figuring out how to connect wireless. Before I do what can I do that will protect me? I am told I don't need anti-virus. Is this accurate? Also, I want a really secure firewall...not one that an experienced hacker could see and just hop over.
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Jul 22, 2010
There are a couple commands I want to run in a terminal that require me to provide my password. I really don't want those commands ending up in any kind of history or anywhere else where they could be seen by someone after the command was run. Are there any shells/terminals for Ubuntu that I could use (or options to bash/zsh/etc) that would give me a secure environment where I don't have to worry about my history being kept?
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Feb 3, 2010
I am running UFW, which is set to deny everything but SSH on port 22, OpenVPN on port 1194 and HTTPS on port 443. SSH is set to only allow private key logins, and the root account is disabled. I have AppArmor running for all of my daemons (OpenVPN, Apache2, OpenSSH) and I have Fail2Ban running.
Is there anything else I can do to secure my server from the Internet (it is directly connected, there is no NAT between the Internet and my server).
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Feb 4, 2010
If I need to get a file to someone I could place it on the server and somehow automate an email telling them there is a file available. They could login to the server based on their email address and a randomly generated key combination and down load the file.I also need it to preform the same function going the other way. Login into my server and place files going to me.
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Feb 11, 2010
I have configured vsftpd on Ubuntu 9.04 and it is working fine. I have configured non-anonymous ftp so that only few of us can acces that ftp. Now I want to secure it using ssl. so I have changed the vsftpd.conf file and entered the following lines in it.
rsa_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
rsa_private_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
ssl_enable=YES
force_local_logins_ssl=YES
force_local_data_ssl=YES
After the restarting the service now when I try to connect to the ftp server it gives me this error. 530 Non-anonymous sessions must use encryption.
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Feb 23, 2010
I would like to set up a proxy server at home which i can use to access sites from work. I was thinking a web-page i log into and then a sort of use like a browser? like this for example, but where i can have a secure login
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