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• A Firefox "master password" feature that's friendly to guest users?

  - by Josh

  I use the "master password" feature of Firefox and like it for a number of reasons. It does have it's drawbacks, though: anytime I hand my laptop over to my girlfriend so she can check her email on it, she's continually confronted with the prompt to enter my master password. I have since disabled the feature and am back to square one. Is there an addon or tweak that will help?

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• kinit gives me a Kerberos ticket, but no AFS token

  - by Tomas Lycken

  I'm trying to setup access to my university's IT environment from my laptop running Ubuntu 12.04, by (mostly) following the IT-department's guides on AFS and Kerberos. I can get AFS working well enough so that I can navigate to my home folder (located in the nada.kth.se cell of AFS), and I can get Kerberos working well enough to forward tickets and authenticate me when I connect with ssh. However, I don't seem to get any AFS tokens locally, on my machine, so I can't just go to /afs/nada.kth.se/.../folder/file.txt on my machine and edit it. I can't even stand in /afs/nada.kth.se/.../folder and run ls without getting Permission denied errors. Why doesn't kinit -f [email protected] give me an AFS token? What do I need to do to get one?

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• Strategy to allow emergency access to colocation crew

  - by itsadok

  I'm setting up a server at a new colocation center half way around the world. They installed the OS for me and sent me the root password, so there's obviously a great amount of trust in them. However, I'm pretty sure I don't want them to have my root password on a regular basis. And anyway, I intend to only allow key-based login. On some cases, though, it might be useful to let their technical support log in through a physical terminal. For example, if I somehow mess up the firewall settings. Should I even bother worrying about that? Should I set up a sudoer account with a one-time password that will change if I ever use it? Is there a common strategy for handling something like this?

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• How to run a service as a user who can't delete or update or create a file

  - by neeraj

  Mongodb is a web based console to try out Mongodb. I have created something similar to try out nodejs. In nodejs I am accepting user input and then I am performing eval on that command. Given the power of nodejs , someone from web console can create a file, delete files on the system or could execute 'rm -rf '. I was thinking will it be okay if I run node as a user called node. This user node will not have any privilege to write anything, create anything or update anything. The only access this user will have is read access. Will that work or that is too much of risk. What is a good strategy to handle such a situation?

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• Securing against DDoS

  - by gAMBOOKa

  My client would like to have his eCommerce (custom-made) site secured from DDoS attacks. What strategies can I implement? There are multiple forms in the purchasing flow --- searching, drilling-down to the product, user information and payment and I want to avoid captchas.

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• Mac OS X Disk Encryption - Automation

  - by jfm429

  I want to setup a Mac Mini server with an external drive that is encrypted. In Finder, I can use the full-disk encryption option. However, for multiple users, this could become tricky. What I want to do is encrypt the external volume, then set things up so that when the machine boots, the disk is unlocked so that all users can access it. Of course permissions need to be maintained, but that goes without saying. What I'm thinking of doing is setting up a root-level launchd script that runs once on boot and unlocks the disk. The encryption keys would probably be stored in root's keychain. So here's my list of concerns: If I store the encryption keys in the system keychain, then the file in /private/var/db/SystemKey could be used to unlock the keychain if an attacker ever gained physical access to the server. this is bad. If I store the encryption keys in my user keychain, I have to manually run the command with my password. This is undesirable. If I run a launchd script with my user credentials, it will run under my user account but won't have access to the keychain, defeating the purpose. If root has a keychain (does it?) then how would it be decrypted? Would it remain locked until the password was entered (like the user keychain) or would it have the same problem as the system keychain, with keys stored on the drive and accessible with physical access? Assuming all of the above works, I've found diskutil coreStorage unlockVolume which seems to be the appropriate command, but the details of where to store the encryption key is the biggest problem. If the system keychain is not secure enough, and user keychains require a password, what's the best option?

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• Ways to use ClamWin Antivirus

  - by Charles Gargent

  I dont use on On Access AV scanner, I just use Clamwin. My download manager invokes a scan on any files I download, and I dont share files. Apart from scheduling a system scan every week (seems an awful waste of resources) what other ways can I use Clamwin to keep your PC virus free. Ideas such as: scan files in open folders, adaptive batch scripts that scan most frequently used folders / last used folders things like that

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• Is there an SSL equivelent to an ssh agent?

  - by Matthew J Morrison

  Here is my situation: There are a number of developers who all need to have access to be able to install ruby gems and python eggs from a remote source. Currently, we have a server inside our firewall that hosts the gems and eggs. We now want the ability to be able to install things hosted on that server outside of our firewall. Since some of the gems and eggs that we host are proprietary I would like to somewhat lock access to that machine down, as unobtrusively as possible to the developers. My first thought was using something like ssh keys. So, I spent some time looking at SSL mutual authentication. I was able to get everything set up and working correctly, testing with curl, but the unfortunate thing was that I had to pass extra arguments to curl so it knows about the certificate, key and certificate authority. I was wondering if there is anything like the ssh agent that I can set up to provide that information automatically so that I can push the certificates and keys to the developer's machines so the developers don't have to log in or provide keys each time they try to install something. Another thing that I want to avoid is having to modify the 'gem' command and the 'pip' command to provide keys when they make the http connection. Any other suggestions that may solve this problem (not related to ssl mutual auth) are also welcome. EDIT: I've been continuing to research this and I came across stunnel. I think this may be what I'm looking for, any feedback regarding stunnel would also be great!

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• File auditing software for Windows Server 2003

  - by David Collantes

  I am looking for a program or program suite that will allow the auditing of network shared resources (specifically storage space), and render reports (who created, deleted, moved, modified files, etc). Yes, I know I can turn on auditing on Windows, but the Event Log isn't quite the "charmer" for the job.

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• fail2ban and denyhosts constantly ban me on Ubuntu

  - by Trey Parkman

  I just got an Ubuntu instance on Linode. To secure the SSH on it, I installed fail2ban (using apt-get), but then had a problem: fail2ban kept banning my IP (for limited durations, thankfully) even though I was entering the correct password. So I removed fail2ban and installed denyhosts instead. Same problem, but more severe: It seems like every time I SSH in, my IP gets banned. I remove it from /etc/hosts.deny, restart denyhosts and log in again, and my IP gets banned again. The only explanation I can think of is that I've been SSH-ing in as root (yes, yes, I know); maybe something is set somewhere that blocks anyone who SSH-es in as root, even if they log in successfully? This seems bizarre to me. Any ideas? (Whitelisting my IP is a temporary fix. I don't want to only be able to log on from one IP.)

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• Noob proftpd questions

  - by Camran

  I have setup my VPS pretty much now, and want to upload some basic files to the server. How is this done in Ubuntu 9.10? I have PuTTY and use the terminal there... Is there any ftp program, like in regular managed hostings, to just upload files with? I was thinking about proftpd, but don't have a clue how to get it to work. I am using my home-laptop with windows xp to command the VPS. Thanks

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• Noob proftpd questions

  - by Camran

  I have setup my VPS pretty much now, and want to upload some basic files to the server. How is this done in Ubuntu 9.10? I have PuTTY and use the terminal there... Is there any ftp program, like in regular managed hostings, to just upload files with? I was thinking about proftpd, but don't have a clue how to get it to work. I am using my home-laptop with windows xp to command the VPS. Thanks

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• What is wrong with my Watcher (incron-like) daemon?

  - by eric01

  I have installed Watcher this way: both watcher.py and watcher.ini are located in /etc I also installed pyinotify and it does work when I use python -m pyinotify -v /var/www However, I want to use the daemon and when I start watcher.py, I get weird lines on my watcher.log (see below). I also included my watcher.ini file. Note: I have the latest version of Python. The watcher.py can be found here What is wrong with what I did? Also, do I really need pyinotify? Thanks a lot for your help watcher.ini: [DEFAULT] logfile=/var/log/watcher.log pidfile=/var/run/watcher.pid [job1] watch=/var/www events=create,delete,modify recursive=true command=mkdir /home/mockfolder ## just using this as test watcher.log: 2012-09-22 04:28:23.822029 Daemon started 2012-09-22 04:28:23.822596 job1: /var/www Traceback (most recent call last): File "/etc/watcher.py", line 359, in <module> daemon.start() File "/etc/watcher.py", line 124, in start self.run() File "/etc/watcher.py", line 256, in run autoadd = self.config.getboolean(section,'autoadd') File "/usr/lib/python2.7/ConfigParser.py", line 368, in getboolean v = self.get(section, option) File "/usr/lib/python2.7/ConfigParser.py", line 618, in get raise NoOptionError(option, section) ConfigParser.NoOptionError: No option 'autoadd' in section: 'job1'

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• Reviewing firewall rules

  - by chmeee

  I need to review firewall rules of a CheckPoint firewall for a customer (with 200+ rules). I have used FWDoc in the past to extract the rules and convert them to other formats but there was some errors with exclusions. I then analyze them manually to produce an improved version of the rules (usually in OOo Calc) with comments. I know there are several visualization techniques but they all go down to analyzing the traffic and I want static analysis. So I was wondering, what process do you follow to analyze firewall rules? What tools do you use (not only for Checkpoint)?

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• Web Application Vulnerability Scanner suggestions?

  - by Chris_K

  I'm looking for a new tool for the ol' admin toolkit and would value some suggestions. I would like to do some "automated" testing of handful of websites for XSS (cross site scripting) vulns, along with checking for SQL injection opportunities. I realize that an automated tool approach isn't necessarily the only or best solution, but I'm hoping it would give me a nice start. The sites I need to scan cover the range in stacks from PHP / MySQL to Coldfusion, with some classic ASP and ASP.NET mixed in for good measure. What tools would you use to scan for Web application vulns? (Please note I'm focusing on the web apps directly, not the servers themselves).

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• Start multiple Firefoxes; Xephyr rootless mode

  - by Vi

  How to have multiple independent instances of Mozilla Firefox 3.5 on the same X server, but started from different user accounts (consequently, different profiles)? Limited success was only with Xephyr :1, DISPLAY=:1 /usr/local/bin/firefox, but Xephyr has no Cygwin/X's "rootless" mode so it not comfortable. The idea is to have one Firefox instance for various "Serious Business" things and the other for regular browsing with dozens of add-ons securely isolated. /* Requested tags: xephyr rootless */

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• Can a Windows 7 computer contain foreign characters for a login password

  - by Luke101

  Trying to harden our servers and would like to know if its possible for a windows 7 box to contain foreign characters?

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• Securing a fresh Ubuntu server

  - by Mr. Matt

  Say I've got a fresh install of Ubuntu, what steps should I take to secure it for use as a Rails application server?

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• Open ports in Windows 7, firewall, public network, port 445

  - by chris

  I selected "public network" in Windows 7. Windows is listening on TCP port 445: TCP 0.0.0.0:445 WIN7TEST:0 ABHÖREN The corresponding incoming firewall rule isn't activated (4th column): When I choose "workplace network" the SMB incoming port 445 rule is still disabled in the advanced windows firewall configuration. I thought "public network" / "workplace network" and so on is influencing the windows firewall rules!? Where's the difference between workplace and public network then? http://www.abload.de/image.php?img=winfire2nxku0.png

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• Remove identifying information from SSH.

  - by The Rook

  When I do an nmap -sV 127.0.0.1 -p 22 of my system I get the following information: SF-Port22-TCP:V=4.62%I=7%D=11/9%Time=4916402C%P=i686-pc-linux-gnu%r(NULL,2 SF:7,"SSH-2.0-OpenSSH_5.1p1\x20Debian-3ubuntu1\r\n"); How do I go about chaining these two pieces of information? i686-pc-linux-gnu and SSH-2\.0-OpenSSH_5\.1p1\x20Debian-3ubuntu1.

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• Account sharing among Ubuntu machines

  - by muckabout

  I'd like a simple and secure system to have allow users in our network to have their account (e.g., 'myname') work on every machine in the network (e.g., such that they could ssh to any machine and have the same userid, mounted smb share). Any suggestions?

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• about crusher in stone,building

  - by sbmxuancao1221

  SBM has formed a whole production chain with main products: crushing machinery, grinding machinery, and auxiliary products: vibrating screen, vibrating feeder and other associated equipments. Products cover more than 20 models of 3 major series: mill series, crushing series, and sand making series.

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• Why do we need Hash by key? [migrated]

  - by Royi Namir

  (i'm just trying to find what am I missing...) Assuming John have a clear text message , he can create a regular hash ( like md5 , or sha256) and then encrypt the message. John can now send Paul the message + its (clear text)hash and Paul can know if the message was altered. ( decrypt and then compare hashes). Even if an attacker can change the encrpyted data ( without decrypt) - - when paul will open the message - and recalc the hash - it wont generate the same hash as the one john sent him. so why do we need hash by key ?

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• Problem with testsaslauthd and kerberos5 ("saslauthd internal error")

  - by danorton

  The error message “saslauthd internal error” seems like a catch-all for saslauthd, so I’m not sure if it’s a red herring, but here’s the brief description of my problem: This Kerberos command works fine: $ echo getprivs | kadmin -p username -w password Authenticating as principal username with password. kadmin: getprivs current privileges: GET ADD MODIFY DELETE But this SASL test command fails: $ testsaslauthd -u username -p password 0: NO "authentication failed" saslauthd works fine with "-a sasldb", but the above is with "-a kerberos5" This is the most detail I seem to be able to get from saslauthd: saslauthd[]: auth_krb5: krb5_get_init_creds_password: -1765328353 saslauthd[]: do_auth : auth failure: [user=username] [service=imap] [realm=] [mech=kerberos5] [reason=saslauthd internal error] Kerberos seems happy: krb5kdc[](info): AS_REQ (4 etypes {18 17 16 23}) 127.0.0.1: ISSUE: authtime 1298779891, etypes {rep=18 tkt=18 ses=18}, username at REALM for krbtgt/DOMAIN at REALM I’m running Ubuntu 10.04 (lucid) with the latest updates, namely: Kerberos 5 release 1.8.1 saslauthd 2.1.23 Thanks for any clues.

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• How do I block IP addresses in SuSEFirewall?

  - by Evgeny

  Does SuSEfirewall in OpenSuSE 11 provide an easy way to block all traffic from a list of IP addresses? Ideally just a textfile into which I can put all IP addresses I want blocked, otherwise some configuration option. I've looked through /etc/sysconfig/SuSEfirewall2, but haven't been able to find anything like that.

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