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• How do I disable administrator prompt in Windows 8?

  - by Arnold Zokas

  I am using Windows 8 Enterprise on my development machine. Most of the time, I need full administrator for debugging, changing system files, etc. In Windows 7, setting UAC to "never notify" would disable any administrator prompts. In Windows 8 this is no longer the case. Even with UAC disabled I get prompted to grant programs elevated privileges. Is there a way disable this behaviour? Note: I am fully aware of the repercussions. I have antivirus, firewall, etc and am generally quite careful about what I download or install on my machine.

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• Correctly setting up UFW on Ubuntu Server 10 LTS which has Nginx, FastCGI and MySQL?

  - by littlejim84

  Hello. I'm wanting to get my firewall on my new webserver to be as secure as it needs to be. After I did research for iptables, I came across UFW (Uncomplicated FireWall). This looks like a better way for me to setup a firewall on Ubuntu Server 10 LTS and seeing that it's part of the install, it seems to make sense. My server will have Nginx, FastCGI and MySQL on it. I also want to be allow SSH access (obviously). So I'm curious to know exactly how I should set up UFW and is there anything else I need to take into consideration? After doing research, I found an article that explains it this way: # turn on ufw ufw enable # log all activity (you'll be glad you have this later) ufw logging on # allow port 80 for tcp (web stuff) ufw allow 80/tcp # allow our ssh port ufw allow 5555 # deny everything else ufw default deny # open the ssh config file and edit the port number from 22 to 5555, ctrl-x to exit nano /etc/ssh/sshd_config # restart ssh (don't forget to ssh with port 5555, not 22 from now on) /etc/init.d/ssh reload This all seems to make sense to me. But is it all correct? I want to back this up with any other opinions or advice to ensure I do this right on my server. Many thanks!

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• Ubuntu Server attack? how to solve?

  - by saky

  Hello, Something (Someone) is sending out UDP packets sent from our whole ip range. This seems to be multicast DNS. Our server host provided this (Our IP Address is masked with XX): Jun 3 11:02:13 webserver kernel: Firewall: *UDP_IN Blocked* IN=eth0 OUT= MAC=01:00:5e:00:00:fb:00:30:48:94:46:c4:08:00 SRC=193.23X.21X.XX DST=224.0.0.251 LEN=73 TOS=0x00 PREC=0x00 TTL=255 ID=0 DF PROTO=UDP SPT=5353 DPT=5353 LEN=53 Jun 3 11:02:23 webserver kernel: Firewall: *UDP_IN Blocked* IN=eth0 OUT= MAC=01:00:5e:00:00:fb:00:30:48:94:46:c4:08:00 SRC=193.23X.21X.XX DST=224.0.0.251 LEN=73 TOS=0x00 PREC=0x00 TTL=255 ID=0 DF PROTO=UDP SPT=5353 DPT=5353 LEN=53 Jun 3 11:02:32 webserver kernel: Firewall: *UDP_IN Blocked* IN=eth0 OUT= MAC=01:00:5e:00:00:fb:00:30:48:94:46:c4:08:00 SRC=193.23X.21X.XX DST=224.0.0.251 LEN=73 TOS=0x00 PREC=0x00 TTL=255 ID=0 DF PROTO=UDP SPT=5353 DPT=5353 LEN=53 Jun 3 11:02:35 webserver kernel: Firewall: *UDP_IN Blocked* IN=eth0 OUT= MAC=01:00:5e:00:00:fb:00:30:48:94:46:c4:08:00 SRC=193.23X.21X.XX DST=224.0.0.251 LEN=73 TOS=0x00 PREC=0x00 TTL=255 ID=0 DF PROTO=UDP SPT=5353 DPT=5353 LEN=53 I checked my /var/log/auth.log file and found out that someone from China (Using ip-locator) was trying to get in to the server using ssh. ... Jun 3 11:32:00 server2 sshd[28511]: Failed password for root from 202.100.108.25 port 39047 ssh2 Jun 3 11:32:08 server2 sshd[28514]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=202.100.108.25 user=root Jun 3 11:32:09 server2 sshd[28514]: Failed password for root from 202.100.108.25 port 39756 ssh2 Jun 3 11:32:16 server2 sshd[28516]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=202.100.108.25 user=root ... I have blocked that IP address using this command: sudo iptables -A INPUT -s 202.100.108.25 -j DROP However, I have no clue about the UDP multicasting, what is doing this? who is doing it? and how I can stop it? Anyone know?

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• Blocking IP Range in .htaccess Problem

  - by Pedro

  Hi, I'm trying to block the access of one of my webapps using IP Filter in the .htaccess, the problem is that after updating the file with: order allow,deny deny from 58.14.0.0/15 allow from all I get the folowing error: Internal Server Error The server encountered an internal error or misconfiguration and was unable to complete your request. Please contact the server administrator, [email protected] and inform them of the time the error occurred, and anything you might have done that may have caused the error. More information about this error may be available in the server error log. What is wrong? Regards, Pedro

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• Disallow root to su on a user which is not listed in /etc/passwd

  - by marc.riera

  Hello, on linux we autenticate users against AD. The AD users are not listed on /etc/passwd. We are about to deploy a NFS solution to mount some extra space for each group of users. If a user(A) with sudo su privileges goes to root, then he can impersonate user(B) just by su user(B) and going to the NFS. Is there any way to disallow root to su user if the user is not listed on /etc/passwd ? Thanks.

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• allowing index access only with .htaccess

  - by YsoL8

  Hello I have this in my .htaccess file, in the site root: Options -Indexes <directory ../.*> Deny from all </directory> <Files .htaccess> order allow,deny deny from all </Files> <Files index.php> Order allow,deny allow from all </Files> What I'm trying to achieve is to block folder and file access to anything that isn't called index.php, regardless of which directory is accessed. I have the folder part working perfectly and the deny from all rule is working as well - but my attempt to allow access to index.php is failing. Basically could someone tell me how to get it working?

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• allowing index access only with .htaccess

  - by YsoL8

  Hello I have this in my .htaccess file, in the site root: Options -Indexes <directory ../.*> Deny from all </directory> <Files .htaccess> order allow,deny deny from all </Files> <Files index.php> Order allow,deny allow from all </Files> What I'm trying to achieve is to block folder and file access to anything that isn't called index.php, regardless of which directory is accessed. I have the folder part working perfectly and the deny from all rule is working as well - but my attempt to allow access to index.php is failing. Basically could someone tell me how to get it working?

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• What is the EGG environment variable?

  - by Randall

  A user on our (openSuSE) linux systems attempted to run sudo, and triggered an alert. He has the environment variable EGG set - EGG=UH211åH1ÒH»ÿ/bin/shHÁSH211çH1ÀPWH211æ°;^O^Ej^A_j<X^O^EÉÃÿ This looks unusual to say the least. Is EGG a legitimate environment variable? (I've found some references to PYTHON_EGG_CACHE - could be related? But that environment variable isn't set for this user). If it's legit, then I imagine this group has the best chance of recognizing it. Or, given the embedded /bin/sh in the string above, does anyone recognize this as an exploit fingerprint? It wouldn't be the first time we had a cracked account (sigh).

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• Webserver logs: "Morfeus Fucking Scanner"

  - by Patrick

  I've just found these accesses in my web server log files: ::ffff:218.38.136.38 109.72.95.175 - [10/Jan/2011:02:54:12 +0100] "GET /user/soapCaller.bs HTTP/1.1" 404 345 "-" "Morfeus Fucking Scanner" ::ffff:218.38.136.38 109.72.95.174 - [10/Jan/2011:02:54:12 +0100] "GET /user/soapCaller.bs HTTP/1.1" 404 345 "-" "Morfeus Fucking Scanner" Should I start to worry ? Or is it just a normal attempt to hack my server ? thanks

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• How to create limited user accounts in Linux

  - by James Willson

  I want to create a user account for each of the key programs installed on my debian server. For example, for the following programs: Tomcat Nginx Supervisor PostgreSQL This seems to be recommended based on my reading online. However, I want to restrict these user accounts as much as possible, so that they dont have a shell login, dont have access to the other programs and are as limited as possible but still functional. Would anyone mind telling me how this could be achieved? My reading so far suggests this: echo "/usr/sbin/nologin" /etc/shells useradd -s /usr/sbin/nologin tomcat But I think there may be a more complete way of doing it. EDIT: I'm using debian squeeze

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• Possible DNS Injection and/or SSL hijack?

  - by Anthony

  So if I go to my site without indicating the protocol, I'm taken to: http://example.org/test.php But if I go directly to: https://example.org/test.php I get a 404 back. If I go to just: https://example.org I get a totally different site (a page about martial arts). I went to the site via https not very long ago (maybe a week?) and it was fine. This is a shared server, as I understand it, and I do not have shell access, so I'm limited to the site's CPanel to do any further investigations. But when I go to: example.org:2083 I'm taken to https://example.org:2083, which, if someone has taken over the SSL port, could mean they have taken over the 2083 part as well (at least in my paranoid mind). I'm made more nervous by the fact that the cpanel login page at the above address looks very new (better, really) compared to the last time I went to it over the weekend. It's possible that wires got crossed somewhere after a system update, but I don't want to put in my name username and password in case it's a phishing attempt. Is there any way to know for sure without shell access to know for sure if someone has taken over? If I look up the IP address for the host name, the IP address matches what I have on a phpinfo page I can get to over http. If I go to the IP address directly on port 2083, I get the same login mentioned above (new and and suspiciously nice). But the SSL cert shows as good when I go this route. So if that's the case (I know the IP is right, the cert checks out, and there isn't any DNS involved), is that enough to feel safe at that point of entry? Finally, if I can safely log in via the IP, does anyone have any advice on where to check first on CPanel for why the SSL port is forwarding to a site on karate? Thanks.

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• How to disable mod_security2 rule (false positive) for one domain on centos 5

  - by nicholas.alipaz

  Hi I have mod_security enabled on a centos5 server and one of the rules is keeping a user from posting some text on a form. The text is legitimate but it has the words 'create' and an html <table> tag later in it so it is causing a false positive. The error I am receiving is below: [Sun Apr 25 20:36:53 2010] [error] [client 76.171.171.xxx] ModSecurity: Access denied with code 500 (phase 2). Pattern match "((alter|create|drop)[[:space:]]+(column|database|procedure|table)|delete[[:space:]]+from|update.+set.+=)" at ARGS:body. [file "/usr/local/apache/conf/modsec2.user.conf"] [line "352"] [id "300015"] [rev "1"] [msg "Generic SQL injection protection"] [severity "CRITICAL"] [hostname "www.mysite.com"] [uri "/node/181/edit"] [unique_id "@TaVDEWnlusAABQv9@oAAAAD"] and here is /usr/local/apache/conf/modsec2.user.conf (line 352) #Generic SQL sigs SecRule ARGS "((alter|create|drop)[[:space:]]+(column|database|procedure|table)|delete[[:space:]]+from|update.+set.+=)" "id:1,rev:1,severity:2,msg:'Generic SQL injection protection'" The questions I have are: What should I do to "whitelist" or allow this rule to get through? What file do I create and where? How should I alter this rule? Can I set it to only be allowed for the one domain, since it is the only one having the issue on this dedicated server or is there a better way to exclude table tags perhaps? Thanks guys

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• How is my password sent across when I check gmails/access bank site [closed]

  - by learnerforever

  What encryption is used when my password is sent across in gmails/when I do online banking? RSA? DSA? Public-private key encryption?. In key encryption, which entity is assigned a public/private key? Does each unique machine with unique MAC address has a unique public/private key? Does each instance of browser have unique key? Does each user have unique private/public key? How does session key come into picture? How do machines receive their keys?

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• Using the right folder for the right job. Article link, please?

  - by Droogans

  There are specific folders designed for specific tasks. /var/www holds your web sites, /usr/bin contains files to run your applications...yet I still find myself putting nearly all of my work in ~. Is it possible to overuse my home directory? Will it come back to haunt me? Anyone have a good link to an article of best practices for organizing your files so that they are placed in their "correct" place? Is there even such a thing in Linux? I am referring specifically to user-generated content. I do not compile applications from source, I use apt-get for those tasks. This article has a great introduction to what I'm looking for. Table 3-2, "Subdirectories of the root directory" is the sort of thing I'm looking for, but with more details/examples.

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• TeamViewer - only allow domain logins

  - by BloodyIron

  I recently started a Systems Admin job where teamviewer is used pretty frequently here. Another admin recently left, and the concern is they still have access to all our systems due to how teamviewer works. I want to migrate the entire environment to domain authentication. The documentation shows that setting up windows auth (domain) is easy, but I want to be sure that it is the only way to be authenticated with a teamviewer session here. I cannot yet find anything which explicitly says this. We have licensing for teamviewer 5 and 6, I think. Right now we have 7 in the environment, but I think most are in a trial version, so I am likely to revert to 5 or 6.

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• How do I find out if mod_security is installed on my apache server?

  - by Haluk

  How can I find out if mod_security is installed on my apache server? I would also like to learn its version. I'm having some upload issues and I tried to disable mod_security using .htaccess. But that started producing 500 internal server errors. I read somewhere that depending on my mod_security version I might not be able to disable it using .htaccess. So I would like to understand if I have mod_security installed and what version it is. I'm on a centos 5 box. Thanks! UPDATE -1 xxxxxxxxxxxxx Does the below output mean I do not have mod_security installed? [root@u11 htdocs]# httpd -l Compiled in modules: core.c prefork.c http_core.c mod_so.c

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• PCRE limits exceeded, but triggering rules are SQL related

  - by Wolfe

  [Mon Oct 15 17:12:13 2012] [error] [client xx.xx.xx.xx] ModSecurity: Rule 1d4ad30 [id "300014"][file "/usr/local/apache/conf/modsec2.user.conf"][line "349"] - Execution error - PCRE limits exceeded (-8): (null). [hostname "domain.com"] [uri "/admin.php"] [unique_id "UHx8LEUQwYEAAGutKkUAAAEQ"] And similar are spamming my error log for apache. It's only the admin side.. and only these two lines in the config: line 349: #Generic SQL sigs SecRule ARGS "(or.+1[[:space:]]*=[[:space:]]1|(or 1=1|'.+)--')" "id:300014,rev:1,severity:2,msg:'Generic SQL injection protection'" And line 356: SecRule ARGS "(insert[[:space:]]+into.+values|select.*from.+[a-z|A-Z|0-9]|select.+from|bulk[[:space:]]+insert|union.+select|convert.+\(.*from)" Is there a way to fix this problem? Can someone explain what is going on or if these rules are even valid to cause this error? I know it's supposedly a recursion protection.. but these protect against SQL injection so I'm confused.

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• Isolate user from the rest of the system..?

  - by Shiki

  There is a non-techsavvy user, who doesn't want to learn, and can only use Windows XP or 7. The problem is, that the computer is shared which she would like to use, and the computer stores sensitive, important data. Since she clicks on everything, it's quite a russian roulette. How could I isolate her account from the rest of the system? Like having a profile on the computer (it runs Windows 7 now) which would have the files and other stuff sandboxed? I was thinking of having a dual boot system, but that could compromise the files too, or the boot sector (talking about Windows). Linux is not a way, hence ... see the first line. Is there such a software that can set up a sandboxed environment?

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• My website is infected, I restored a backup of the uninfected files, how long will it take to un-mark as dangerous?

  - by Cyclone

  My website www.sagamountain.com was recently infected by a malware distributor (or at least I think it may have been). I have removed all external content, google ads, firefly chat, etc. I uploaded a backup from a few weeks ago, when there was no issue. I patched the SQL injection hole. Now, how long will it take to unmark it as dangerous? Where can I contact google? I am not sure if this is the right place to post it, but since it may have been a server issue I may as well. Can sites inject base64 code via a virus on the whole server, or is it only via sql injection? Thanks for the help, viruses freak me out. Is there an online virus scanner that can scan my page and tell me what is wrong?

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• zip password crack possible?

  - by tm1rbrt

  I have a piece of software i have to install on company laptops. The installer needs a serial to work properly, but i don't have it (my manager isn't here so i cant ask him). The installer tells me to ring a phone number which doesnt appear to be connected anymore. I would download win32dasm and ollydbg and have a go at cracking the installer but i dont really have time and i havnt done it in years. There is a zip file on the disc that looks like it contains all the program files but it is passworded. Is it feasible to crack this or will it take ages?

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• Using SSLv3 - Enabling Strong Ciphers Server 2008

  - by Igor K

  I've disabled SSLv2 and SSLv3 is on. However I cannot connect to a remote server which fails with The client and server cannot communicate, because they do not possess a common algorithm Ran an SSL check (http://www.serversniff.net/sslcheck.php) on the remote server and ours, and noticed none of the ciphers they accept we have on our server. How can this be configured? (Windows Web Server 2008) Remote Server Accepted SSL ciphers: DHE-RSA-AES256-SHA AES256-SHA EDH-RSA-DES-CBC3-SHA DES-CBC3-SHA DHE-RSA-AES128-SHA AES128-SHA Our server by default accepts: DES-CBC3-SHA RC4-SHA RC4-MD5

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• Open source system for swipe card access?

  - by Moduspwnens

  We're looking at replacing our campus-wide magnetic swipe card system with something more robust. The "programmer" side of me says there's got to be an open-source, scalable solution that already does this, but all I've been able to find are proprietary vendor-specific solutions. Ideally, it'd have the following: Based on some open standard that allows us to select from a wide selection of card readers (like IMAP or HTTP) Support different kinds of card access (magnetic strip, RFIDs, etc.) Future-proof (to the extent possible) The lack of information I'm finding leads me to believe I'm not searching for the right things... or such a solution doesn't exist. Is there not some basic, open-source solution to this (like MySQL for databases, or Moodle for an LMS, or Apache for a web server)?

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• Creating limited user account on Windows 7

  - by serena

  I'm sharing my PC (Win 7 x64 Home Premium) with a friend, and I wanna create a guest user for her. I don't want her to reach my files, Windows settings, program adjustments etc. She should just surf the net, create/edit her own Word, Excel documents, and simple things like these. How can I create this user account and make the necessary arrangements for limitations?

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• Network vulnerability and port scanning services

  - by DigitalRoss

  I'm setting up a periodic port scan and vulnerability scan for a medium-sized network implementing a customer-facing web application. The hosts run CentOS 5.4. I've used tools like Nmap and OpenVAS, but our firewall rules have special cases for connections originating from our own facilities and servers, so really the scan should be done from the outside. Rather than set up a VPS or EC2 server and configuring it with various tools, it seems like this could just be contracted out to a port and vulnerability scanning service. If they do it professionally they may be more up to date than something I set up and let run for a year... Any recommendations or experience doing this?

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• Which trojan is this?

  - by omgHelpMe

  Could you identify this trojan/keylogger based on the set of files? I've been able to find out that the file names are random except rp.dll. Also, the icons are always the same. Thanks guys.

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