OpenSUSE Network :: Security - How To Secure
May 30, 2011how to secure opensue? Or point me to some good articles etc?
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Security :: Ways To Secure Sendmail Or Secure Alternatives To Send Mail
Dec 1, 2010I'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.
OpenSUSE Network :: How Secure Is Default Opensuse 11.04 Machine Out Of Box
May 19, 2011First off How do you disable IPV6 access on all connections used on the pc-is there a way to test for ipv6 connectivity?
Secondly how secure is a default opensuse 11.04 machine out of the box? should i be making some changes to the default configuration?
Thirdly what does the default firewall settings do? on my network i use my wpa2 psk aes connection via my local wireless network-in the event that some can hack into my wireless would the opensuse firewall prevent direct access to my pc from a attacker on the same wireless subnet?
Fourthly when does opensuse 11.04 go out of date? in a year from now?
OpenSUSE Network :: Can't Connect To WPA Secure Routers.
Mar 1, 2009I can connect to unsecure routers, but not to any secure routers. NetworkManager doesn't seem to work and neither does anything else I try. I have tried with WPA supplicant but to be honest I have not a clue what to do. I have an Atheros ar5009 card and I'm currently using the ath9k module. Lan works just fine. But my wireless doesn't.
wlan0 IEEE 802.11abgn ESSID:""
Mode:Managed Frequency:2.462 GHz Access Point: Not-Associated
Bit Rate:1 Mb/s Tx-Power=23 dBm
Retry min limit:7 RTS thrff Fragment thr=2352 B
Encryption keyff
Power Managementff
Link Quality=92/100 Signal level:-36 dBm Noise level=-95 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
I have updated everything it seems like, but nothing I do seems to work. I have been at this for almost 3 weeks already hoping for a break and so far nothing.
Ubuntu Security :: Vino Is NOT SECURE - "Your Desktop Is Only Reachable Over The Local Network." Should Be Removed
May 28, 2011I installed a fresh copy of Ubuntu 11.04 on my server about 2 weeks ago, I setup remote desktop and figured to just leave the password field out as it suppose to be pre-configured to only accept local connections, well, apparently not. I was noticing some strange network activity and checked my router connections and sure enough I see port 5900 to the server, open vino icon and see that there is someone else connected! (IP of unauthorized user: 77.29.51.239 ).. Immediately kick them and set a password. This should really be addressed and/or a password should be defaulted or at the very least the "Your desktop is only reachable over the local network." should be removed.
View 9 Replies View RelatedOpenSUSE Network :: Browsing Secure Sites Is Very Slow
May 21, 2011I've recently installed openSUSE 11.4 (64 bit) on my system and am experiencing severe performance issues with websites using https (any site using https). Page loads over https take anywhere between 30 seconds to 2 minutes. It's the same issue posted here Secure sites load slow or not at all -- there was no confirmed solution.
- My router/hardware configuration has not changed in a long time and I've run Ubuntu, Arch Linux, and Windows XP on the same machine within the last year and have not had any issues.
- I also have a laptop running Arch Linux (kernel 2.6.38) and this problem does not occur using Firefox 4 or Chrome. To add to the madness this problem occurs while running Firefox 4 inside a Windows 7 guest via virtual box, but NOT while running IE 8 inside the same guest.
- This issue occurs using Firefox 4, Chromium, Opera, Konqueror, and Arora.
- I've disabled ipv6 in Firefox via about:config.
- I've disabled ipv6 in yast and have attempted to use both the "ifup" and "networkmanager" options.
- I am not using a proxy server.
- I've attempted the fix posted in the Ubuntu forums for a similar problem [ubuntu] [SOLVED] Banking Site is very slow.
Security :: Missing A Secure.log Or Security.log File
Jul 11, 2010I seem to be missing a secure.log or security.log file. I have Ubuntu 10.04 and can't find this file. I looked in the /var/log and ran a search command to no avail. Does anyone know where this file is or is it called something else. I'm looking for a file that logs any change to the security settings of the system.
View 1 Replies View RelatedOpenSUSE Wireless :: "Secure" Icon On Open Network?
Jul 1, 2010My wireless is working well enough for me to post this, but does go down from time to time (still troubleshooting the cause.. may be a Cisco Anyconnect VPN client, or Amarok). From time to time the connection will just drop out, and I will have to reboot to get it to reconnect. In these times, dhcpcd eth1 ends up timing out, and if I look at the networkmanager log, that also shows a timeout. wllist scan will show the nearby APs, though, and iwlist will show the card as "connected" to an ap (ssid and all), but no pings will work and dhcpcd will continue to say it times out.Anyhow, I noticed that most of the time when I do a scan in Knetworkmanager, the attached screen appears - I am concerned, because I know that these are open APs, and also that it is showing quite a few too many. If I completely wipe Knetworkmanager and reinstall, are there any gotchas that might be worth knowing about?
View 5 Replies View RelatedOpenSUSE Network :: Samba Security Update / Lost Access To Network
Mar 25, 2010Installed a security update for samba tonight via Opensuse updater.Now, when trying to access my home network an authentication box pops up (never used to)Asks me to enter authentication for my home network.I enter my username and password and hit enter. After a few seconds the authentication box pops up again askingfor the same indicating I have entered the wrong username / password combination (which I know I have not).
View 9 Replies View RelatedOpenSUSE Network :: Increase Network Security> Personal Firewall?
Apr 7, 2011I want some advice for making my system more secure. I want deactivate any network connection that is unnecessary. Only my browser and the update ability of zypper should have access to the internet. On windows there are personal firewalls.
How can I block internetaccess for all other programmes on openSUSE?
OpenSUSE Network :: Network Manager Won't Accept Security Key?
Feb 22, 2009The network manager will ask me for my security key and it will not accept it. Instead when I use the show password feature to see what I typed in was correct, it shows something completely different than what I typed. For instance if my Key was :when it pops up and ask to for me to retype it again it shows something completely different in hex. Is there anyway I can use a different network manager?
View 8 Replies View RelatedSecurity :: How To Centos Secure
Dec 23, 2010How to Centos 5.5 very secure for mail server. how to its performance very fast.
View 2 Replies View RelatedSecurity :: How To Secure User Id
Apr 13, 2010perform below activities please guide how to do perform below activities.Make sure the Guest account is disabled or deleted.-Disabled or deleted anonymous accessSet stronger UserID policiesSet Key Sensitive UserID Default enable in linuxCombination of numbers, letters and special characters (*,!,#,$,etc.)
Status of UserID
Type
User Name
[code]....
Ubuntu Security :: Better Way To Secure My Server?
Jan 26, 2010I 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?
Ubuntu Security :: OS Which Is More Secure Without Recoding It Yourself?
Feb 11, 2010A) Pc-bsd
B) Ubuntu
And also which OS is more reliable?
Ubuntu Security :: How To Secure Grub 2.0
Mar 11, 2010How 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
View 9 Replies View RelatedUbuntu Security :: Possible To Secure Transmission?
May 10, 2010Is it possible at all to secure transmission?
View 9 Replies View RelatedSecurity :: How Secure Is Ubuntu / Firefox
Jun 14, 2010Newbie 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?
Ubuntu Security :: How To Secure Harddisk
Sep 19, 2010Is 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.
View 9 Replies View RelatedUbuntu Security :: Need To Secure My Server
Feb 19, 2011Ok 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?
View 9 Replies View RelatedUbuntu Security :: How Secure Can Website Really Be
May 25, 2011I 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.
Ubuntu Security :: What Is A Best Way To Secure A Server?
Jul 27, 2011what is the best option to securing server via firewall and iptables?
View 9 Replies View RelatedSecurity :: SSH Setup To Secure Server In Best Way
Feb 12, 2010I'm learning to secure my server in the best way I can think of: By learning to attack it. Here's what would like to accomplish. I have SSH set up on a linux box in a offline lab environment.
Username: root
Password: ajack2343d
Now, I know I can simply brute force this as I know the password, but there has to be other ways, and I wish to learn them.
Security :: SSH User/passwd Or PPK Secure Key?
Apr 22, 2010we are trying to make a policy decision whether to go with SSH user/passwd or PPK secure key ? our servers are hosted remotely by a hosting service. we were wondering which of these two models are more secure.e.g. i would tend to think that user/passwd with account lockouts upon failed attempts would be more secure because the other option exposes your server in case someone sneaks the PPK file or steals your whole computer.however, what makes me doubt myself is that Amazon Web Services EC2 cloud hosting uses PPK by default (although an instance's SSH config can be change to accommodate logging in but they don't endorse it).
View 3 Replies View RelatedSecurity :: Strange Messages In The Secure Log?
May 12, 2011Suddenly, I'm getting lots of messages in my CentOS 5.6 secure log : -
May 12 13:07:49 CentOS55 webmin[14538]: Successful login as root from 192.168.0.203
May 12 13:10:03 CentOS55 userhelper[14698]: pam_timestamp(system-config-securitylevel:session): updated timestamp file `/var/run/sudo/root/unknown'
[code]....
Fedora Security :: FW Default F10 Standardly Secure?
Mar 14, 2009Are the default firewall settings of F10 without any modification, sufficiently secure for general usage and to bridge the timeframe between a fresh installation of F10 and the time before the security updates are applied?imilar to how Windows firewall is set without any configuration, or do I need manually configure it to be somewhat secure, or something like Firestarter.
View 14 Replies View RelatedFedora Security :: How To Secure Home Folder
Mar 19, 2010How to secure the Home folder. I forgot what the script was?
Something like chmod 0700 $HOME. Is that right? I'm just not sure.
Ubuntu Security :: Secure My Server From The Internet
Feb 3, 2010I 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).
Ubuntu Security :: Secure File Transfer
Feb 4, 2010If 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.
View 2 Replies View RelatedUbuntu Security :: Missing Secure.log File?
Jul 11, 2010I seem to be missing a secure.log or security.log file. have Ubuntu 10.04 and can't find this file. I looked in the /var/log and ran a search command to no avail. Does anyone know where this file is or is it called something else.looking for a file that logs any change to the security settings of the system.
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