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• Microsoft DNS Server (Windows 2008) CNAME issue

  - by Lukes123

  I am using the DNS role in Windows Server 2008 R2. I have my records set up correctly with the following CNAMEs: {removed domain names for security} Currently, only the 'wsp' cname works. All the records are identically set up. I have checked with a DNS checker, and the other two CNAMEs do not resolve to anything. I have tried restarting the server, re-creating the forward lookup zone. Can anyone see what is wrong? 'A' records work fine when set.

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• SAMBA and Linux ACLs -- "Permission denied" on write to share but file written nevertheless

  - by MCH

  I set up a writable share directory "/home/net/share" with acl like this: sudo mkdir -p "/home/net/share" sudo setfacl -m "u:localuser:rwx,u:remoteuser:rwx,g:users:rwx" "/home/net/share" My /etc/samba/smb.conf looks like this: [global] workgroup = w server string = server security = user load printers = no log file = /var/log/samba/%m.log max log size = 50 dns proxy = no printing = bsd printcap name = /dev/null disable spoolss = yes encrypt passwords = true invalid users = nobody root follow symlinks = yes wide links = yes [share] comment = Writable by localuser and remoteuser path = /home/net/share valid users = remoteuser read only = no public = no printable = no Locally, localuser and remoteuser have user accounts and smbpasswds and can both read, create and delete files in /home/net/share. But when I log on from a different machine (like this: sudo mount -t cifs //server/share mountpoint/ -o username=remoteuser ), I get "Permission denied" both when trying to create directories and files, oddly though, it does create files (not directories!) despite these messages! How can I get this working?

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• What URLs must be in IE's Trusted Sites list to allow Windows Update?

  - by ewall

  Particularly for servers in which IE Enhanced Security Configuration is enabled, you need to have all the Windows Update/Microsoft Update URLs in your "Trusted Sites" list in order to use the site. (Furthermore, for domain member servers where Group Policy enforces Internet Explorer's list of "Trusted Sites", you don't have the option to edit the Trusted Sites yourself... so all the necessary URLs should be listed in the GPO.) So, what is the full list of URLs I'll need in IE's Trusted Sites? So far I have the following: http(s)://*.update.microsoft.com http://download.windowsupdate.com http://windowsupdate.microsoft.com I seem to remember there being several more...

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• recommendations for a lightweight linux distribution for a test server

  - by Jack

  I'm planning on setting up a test server to experiment with some application servers (tomcat/jboss/...) and with some portals. Now the machine I've set aside for this is lightweight CPU/GPU wise(Atom D510, 4 gigabyte ram, 500 GiB hdd, onboard GPU). But it should suffice for most things, I'm more interested in the stability of JBoss/Tomcat for my purposes than the stability. However I'm having a bit of trouble picking an appropriate distribution size/performance/setup time wise/security wise since it seems I can't sneeze without another distribution popping up. I've been thinking about going for Fedora since I've read that that distribution has been optimized for Atom, but I'm not really familiar with it. My experience with Linux has mostly been limited to Ubuntu and some tinkering with puppylinux. I'm not afraid to get my hands dirty using the command line. I'm not planning on starting a discussion per se, mostly the pros/cons that people have encountered with some distributions

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• windows 2003 - why can't serial port be accessed remotely?

  - by Danny Staple

  we have recently installed the updates on some of our servers, which have a bit of hardware attached via USB that presents itself as a serial (COM) port. The strange behaviour is that if I start a cmd shell on the server via VNC, I can open the serial port. If I run a service and start it from there (telnet, jenkins) then I receive a "not found" error for it. IE: C:\Documents and Settings\some_user>echo 1 >COM4: C:\Documents and Settings\some_user> on the local cmd will work, and on the remote telnet will give: C:\Documents and Settings\some_user>echo 1 >COM4: The system cannot find the file specified. C:\Documents and Settings\some_user> I cannot see any security settings on the Device manager settings panel for this device.

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• SSL 3.0 warning in Chrome on Ubuntu 10.04LTS

  - by Leopd

  I'm running Apache2 with SSL on Ubuntu 10.04LTS. Chrome gives me this annoying warning when I inspect the certificate: The connection had to be retried using SSL 3.0. This typically means that the server is using very old software and may have other security issues. The relevant part of the apache config looks like: SSLEngine on SSLCertificateFile /etc/ssl/... SSLCertificateKeyFile /etc/ssl/... SSLCACertificateFile /etc/ssl/... SSLProtocol -all +SSLv3 +TLSv1 The last line I added to try to address this problem, but it's not working. Any advice on properly enabling TLS?

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• SSH reverse tunnel to monitor and manage remote devices

  - by acid_crucifix

  I have a set a distributed set of devices running Ubuntu 12.04 that I am distributing to clients. I would like to manage them remotely. They may not have fixed IPs and potentially might be behind firewalls. What I am planning to do is have the devices (permanently connected to the net) poll a request URL and based on the response open a reverse tunnel to my server, so that I can access them via that tunnel. Most of what I read about reverse tunnel over SSH is for single use cases and very little about heavy production usage. Is there some reason for this, security issues? or stability? Any help would be much obliged.

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• Does Exchange have ability to run hidden mailboxes?

  - by MadBoy

  Hello, Title of my question may sound a little bit odd but I was thinking if Exchange 2010 or 2007 or any program that would work in conjunction with Exchange has ability to create this structure: Users having their normal mailboxes connected and using them as everyone would in Outlook 2003/2007/2010. Users having additional mailboxes (from old Exchange 2003) attached but hidden on demand of Administrator. For example administrator could easy disable them just like they never been attached making them invisible to users and everyone else. Would be good if such mailboxes could be easily removed out of system (lets say on external drive) by simple step not manual job for 100 mailboxes. Users without ability to copy/move their mails to outside storage (like a local .pst file)? Do you guys have any suggestions on this? I was thinking maybe using public folders but this seems like overkill and not really suited for this. And please don't ask me why I need this type of security (it's not something I requested).

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• Why is my ethernet interface in promiscuous mode

  - by nhed

  I read that seeing a flag of M in netstat -i is the way to tell which of your interfaces is in promiscuous mode I run it and I see that eth1 is in promiscuous mode $ netstat -i Kernel Interface table Iface MTU Met RX-OK RX-ERR RX-DRP RX-OVR TX-OK TX-ERR TX-DRP TX-OVR Flg eth1 1500 0 1770161198 0 0 0 57446481 0 0 0 BMRU lo 16436 0 97501566 0 0 0 97501566 0 0 0 LRU This seems to be the case on all the machines I checked (All Centos6.0, both virtual and physical), any idea why ethernet devices would be in such a mode unless someone was running any pcap based app (sudo lsof | grep pcap shows nothing)? I did not see any mention of promiscuous in any of the config files (sudo grep -r promis /etc) Any ideas what puts the interface into that mode and why? p.s. most of the posts I see seem to be security related, this is not that

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• anonymous access to ftpd

  - by gcb

  I need FTP on my local LAN so my scanner can send me scans. I am on Debian sid. I installed ftpd and created the user anonymous. I removed anonymous from /etc/ftpusers When I try to login as anonymous it says: login failed. I can't seem to find any log file. I'm using FTP server (Version 6.4/OpenBSD/Linux-ftpd-0.17) update:I needed that so my printer had one place to store my scanned documents on the LAN. solved that buying a dedicated USB pen drive (thankfully I bought a printer one with plenty of options) but in the past this was a very simple task. Install ftpd, specify the directory for anonymous access, and be done with it. now every ftp daemon has several layers of security and chroot in it's core... this is just crazy when all you need a place for a printer to dump files in a secured network.

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• IE10 does not open .pdf

  - by user203298

  I can't open any PDFs in IE10 on Win7 64bit. I've tested with PDFs from Intranet / Internet / local file system, http and https. I've tested installing/uninstalling Acrobat Reader 11.0.03 and the Nitro PDF Reader. I've also tried enabling/disabling the Tools Internet Options Advanced Security Do not save encrypted pages to disk option. In Google Chrome PDFs are opened in the Acrobat Reader Plugin, but in IE10 the only thing I always get is a small cross in the top left corner of the browser. Can anybody help me?

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• login as rsh in rhel 6 without entering password

  - by cartmancakes

  I need to be able to login to a RHEL 6 server using rsh (please don't flame me about security, it's irrelevant in this particular instance) as root without having to enter a password. My procedure for setting this up works great in RHEL 5.x, but does not work in RHEL 6. I suspect this has something to do with PAM, but I'm inexperienced with how to use PAM. Can someone help me with this? /etc/pam.d/rsh auth required pam_rhosts.so auth required pam_nologin.so account include common-account password include common-password session required pam_loginuid.so session include common-session /etc/pam.d/rlogin auth required pam_nologin.so auth [user_unknown=ignore success=ok ignore=ignore auth_err=die default=bad] pam_securetty.so auth sufficient pam_rhosts.so auth include common-auth auth required pam_mail.so account include common-account password include common-password session required pam_loginuid.so session include common-session Thanks!

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• Asking for Credentials, when requesting shared folders on the server, regularly for domain users?

  - by MFH

  In our network, single domain controller, when some users (members of the domain) request shared folders on the server they are required to enter their credentials, the server is Windows Server 2008 R2, even checking to remember my credentials doesn't work, sometimes it shows this message: "The system has detected a possible attempt to compromise security. Please ensure that you can contact the server that authenticated you", sometimes it shows different messages, when I try to recreate the case sometimes I failed, I searched Google for it, I didn't find useful results, some talk about kerberos, but we don't use kerberos, this keeps going each day or two, how to overcome this, I don't want these messages to appear to users?

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• Converting or playing a .264 video file?

  - by Dan

  I recently bought a Chinese brand DVR (to record security cams). The DVR exports the video files with a ".264" extension. This is my first time ever dealing with this video format. Anyhow I've been trying to convert the videos to any other format so it will be easier to watch the videos. The problem is that I could only find one program that can convert and play those files which is Elecard studio something, and even that Elecard studio thing is having trouble with these files, some of them are just making it crash so I can't convert them. I've tried to find some other programs but I couldn't find anything that can actually play those files. How can I play or convert these files to another format?

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• Unable to get to remote samba share

  - by tubaguy50035

  I have a remote VPS that I would like to setup samba on and only allow my IP access to it. I currently have in my smb.conf: [global] netbios name = apollo security = user encrypt passwords = true socket options = TCP_NODELAY printing = bsd log level = 3 log file = /var/log/samba/log/%m debug timestamp = yes max log size = 100 [hosting] path = /hosting/ comment = Hosting Folder browseable = yes read only = yes guest account = yes valid users = nick I have the ports (137,138,139,445) open in iptables (they're open to everyone right now while I debug) and I see nothing in the syslog about iptables blocking my requests. When I try to open a file browser to my address \\ipaddress, it hangs for a good thirty seconds, and then opens a log in box. I enter my user name and password for the server, hit okay. It then opens the same box, I enter my credentials again and hit enter. Windows then tells me it could not connect. My user account is added to Samba already. Anybody have any suggestions what I can do to get this working?

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• How to use psexec without admin privileges on target machine?

  - by HighCommander4

  Is it possible to use psexec to execute a command on a remote machine without having admin privileges on the remote machine? I tried running psexec \\<machine> -u <username> -p <password>, where <username> and <password> are non-admin credentials, but I get an "access denied" error I can remote desktop into the remote machine with the same credentials without any problems. My local machine is running Windows 7 Enterprise 64-bit, and the remote machine is running Windows Server 2008 64-bit. I do have admin privileges on the local machine. EDIT: To all the people who are downvoting this question: I am not trying to circumvent any sort of security measure. I can already run the process on the remote machine by remote desktop-ing into the remote machine and running it. I'm simply looking for a command-line way to do something I can already do through a GUI.

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• NetDiag + TCP Blocking?

  - by CrazyNick

  We are facing some issue with the sharepoint 2007 timer jobs everyday at a specific time, so decide to track the tcp blocking informartion during those hours using NetDiag tool. We are not able to find the required information if we uses "netdiag /test:ipsec", what is the command that can be used to pull the TCP blocking information and how to configure it? if i ran the command "netdiag /test:ipsec /debug" it is returning "IP Security test . . . . . . . . . : Skipped", what does it mean?

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• Problem with Ctrl key on a hp 2510p

  - by Ernelli

  I have a tricky problem with my corporate Compaq hp 2510p, the ctrl key is not working properly at all times. I belive that it is hooked in some filter chain that processes certain ctrl+[key] combinations which is very annoying. I would like some pointers on how to proceed when analysing what application/setup can can cause this kind of keyboard filtering to happen. Anyway some more background info: Ctrl works together with X, C, V. Both in editors and terminals (Ctrl-C, Z etc) but Ctrl-Shift-Esc and Ctrl-Alt-Del does not work. Very annoying so my only option for logging in us using HP's security app. Shift-Arrow works for selecting text, but not Ctrl-shift arrow to select word by word, but Ctrl-Arrow works when moving the caret word by word. Now the strange thing is that everything works ok with an external USB keyboard so it might be the driver, but still, google yields 0 when searching for the problem description. I have vm-ware player installed (but not running it), HP Protect Tools installed, if any of these could affect the keyboard driver.

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• Replicate portion of an LDAP directory to external server

  - by colemanm

  We're in the process of setting up a Jabber server on Amazon EC2 right now, and we'd like to have our internal users authenticate via LDAP so we don't have to create/manage a separate set of user accounts than the master directory in the office. My question is: is there a way to copy, unidirectionally, a segment of our internal LDAP directory (the user accounts OU) to an external LDAP server and authenticate Jabber against that? We're trying to work around having our externally hosted machines out in the cloud accessing our internal network directly... If we can replicate in one direction only a subset of the user accounts, then if that gets compromised we don't necessarily have a critical security breach into our internal network.

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• Can I use a micro ec2 instance as a load balancer for my other large ec2 instances?

  - by Ryan Detzel

  The issue I'm having is I want to upgrade that instance often(security patches, etc) but I'm affriad something will fail and the site will be down. So, I want to have another server setup and load balance between the two that way I can easily disable one, upgrade it and once it's working add it back in the mix and repeat. What kind of machine is needed for a load balancer? Would the micro instance work just fine? The site gets anywhere from 3-10k hits/day. I plan on using nginx as the load balancer.

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• Is "Cleversoft PC Tuneup Maestro" malware?

  - by Barend

  I found a desktop icon for something called PC TuneUp Maestro on my parents' laptop. Googling it yields pages upon pages of freeware download sites, but I couldn't find anything legitimately confirming or clearing it of malware status. I distrust these programs by default, but Microsoft Security Essentials seems to think it's legit. Does anyone know what this program is and if it's up to anything surreptious? Can I uninstall it or do I write off the entire OS install as tainted? The system hosts file is intact (no funny unicode lookalikes either), so that red flag, at least, hasn't been raised.

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• How can I persist certificates in Java's cacerts?

  - by Alan Spark

  We need to have a certificate in Java's cacerts keystore for one of our servers that is authenticated by LDAP. We are using Ubuntu server. We have successfully done this by updating the cacerts file in /usr/lib/jvm/java-6-openjdk-amd64/jre/lib/security but occasionally a Java update is installed and the cacerts file seems to be getting replaced by a default one that doesn't contain our changes. This doesn't happen very often but it is becoming a bit of a pain when it does happen. Is there a better way of adding things to cacerts so that they don't get lost when a Java update happens? Thanks, Alan

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• How are file permissions applied for shared drives?

  - by sleske

  I have two computers: A (running Windows Vista) B (running XP). I shared C: on computer A (as \\A\C ), and require a username (X) plus pw to access it. If I browse the the share \A\C on computer B, after entering username+pw I can access most folders, but one folder "\\A\C\F" gives me "permission denied". I looked at that folder's permissions on A, and it has full access permissons for all "Administrators". I use the account "A\X" to authenticate when accessing the share on A. X is a user account (on A) that is an "Administrator" according to Window's user management. Still, I cannot access this folder. If I explicitly add the "X" account to the accounts that may access folder F (under Properties / Security), I can access it without problems. I do not understand why I need to explicitly grant permission for X to get access to F. Is it not enough that X is an Administrator account?

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• Windows 7 random black screen when idle

  - by Omar

  Occasionally, when I'm away from my computer for about 5 minutes, the computer screen will go black and all USB devices (keyboard/mouse) will lose power. Attempting to move the mouse or pressing keys does not 'wake up' the computer. This only started happening a few days ago but I'm not sure what changes I did could have caused this and I uninstalled programs (one by one) I installed before it started happening, but still having the same issue. The one thing I noticed different about my computer since it started happening is i've been getting random survey popups from www.insightexpress.com. I ran Microsoft Security Essentials scan, it picked up some Java related malware, I removed it but still the same issue. I'm running MBAM right now and will run SAS after. Edit: I just updated drivers for motherboard and video card and ran virus scans, still having the same issue.

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• Terminal Server Install -- Add/Remove Program Message on NonAdministrator Machines

  - by Brandon

  First time poster... My company uses terminal services for one of our remote offices. Data is kept on a different server. OS is Windows Server 2003. Last week, they needed to purchase a program and have it installed on terminal server, which was done. An administrator session was started, the TS was put into install mode and the program was installed. The TS was then put back into execute mode. The install did not require a reboot. Since then, when any user who does not have administrator privileges initiates a remote session and logs in they get a security message that says "Add / Remove programs has been restricted. Please contact your system administrator." The only option is to click OK, which everyone does and after that there are no issues. Anyone have any idea why this is happening and how to fix? Thanks!

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