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  • Using Cloud Formation provisioned security group with specific subnet

    - by Fred Clausen
    Summary I'm attempting to create an AWS CloudFormation template which contains an instance for which I want to select a particular subnet. If I specify the subnet ID then I get the following error The parameter groupName cannot be used with the parameter subnet. From reading this thread it appears I need to provide security group IDs - not names. How can I create a security group in CloudFormation and then get its ID after the fact? Details The relevant part of the instance config is as follows "WebServerHost": { "Type" : "AWS::EC2::Instance", <..skipping metadata...> "Properties": { "ImageId" : { "ami-1234" }, "InstanceType" : { "Ref" : "WebServerInstanceType" }, "SecurityGroups" : [ {"Ref" : "WebServerSecurityGroup"} ], "SubnetId" : "subnet-abcdef123", and the security group looks as follows "WebServerSecurityGroup" : { "Type" : "AWS::EC2::SecurityGroup", "Properties" : { "GroupDescription" : "Enable HTTP and SSH", "SecurityGroupIngress" : [ {"IpProtocol" : "tcp", "FromPort" : "80", "ToPort" : "80", "CidrIp" : "0.0.0.0/0"}, {"IpProtocol" : "tcp", "FromPort" : "22", "ToPort" : "22", "CidrIp" : "0.0.0.0/0"} ] } }, How can I create and then get that security group's ID?

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  • Cisco adaptive security appliance is dropping packets where SYN flag is not set

    - by Brett Ryan
    We have an apache instance sitting inside our DMZ which is configured to proxy requests to an internal NATed tomcat instance inside our network. It works fine, but then all of a sudden requests from apache to the tomcat instance stop getting through with the following in the apache logs: [error] (70007)The timeout specified has expired: ajp_ilink_receive() can't receive header Investigating into the Cisco log viewer reveals the following: Error Message %ASA-6-106015: Deny TCP (no connection) from IP_address/port to IP_address/port flags tcp_flags on interface interface_name. Explanation The adaptive security appliance discarded a TCP packet that has no associated connection in the adaptive security appliance connection table. The adaptive security appliance looks for a SYN flag in the packet, which indicates a request to establish a new connection. If the SYN flag is not set, and there is not an existing connection, the adaptive security appliance discards the packet. Recommended Action None required unless the adaptive security appliance receives a large volume of these invalid TCP packets. If this is the case, trace the packets to the source and determine the reason these packets were sent. All are machines are virtualised using VMware, and by default machines have been using the Intel E1000 emulated NIC. Our network administrator has changed this to a VMXNET3 driver in an attempt to correct the problem, we just have to wait and see if the problem persists as it's an intermittent problem. Is there something else that could be causing this problem? This isn't the first service where we have had similar issues. Our apache host is running Ubuntu 11.10 with a kernel version of 3.0.0-17-server. We have also had this issue on RHEL5 (5.8) running kernel 2.6.18-308.16.1.el5, this machine also has the E1000 NIC. NOTE: I am not a network administrator and am a software architect and analyst programmer responsible for these systems.

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  • "Checksum failed" during Kerberos SSO

    - by Buddy Casino
    This is an error that occurs when a mod_auth_kerb protected webapp is being accessed, and I have no idea what the cause might be. Can anyone give hints as into which direction I should look? Thankful for any help! Search Subject for Kerberos V5 ACCEPT cred (HTTP/[email protected], sun.security.jgss.krb5.Krb5AcceptCredential) Found key for HTTP/[email protected](23) Entered Krb5Context.acceptSecContext with state=STATE_NEW >>> EType: sun.security.krb5.internal.crypto.ArcFourHmacEType Checksum failed ! 16:36:30,248 TP-Processor31 WARN [site.servlet.KerberosSessionSetupPrivilegedAction] Caught GSS Error GSSException: Failure unspecified at GSS-API level (Mechanism level: Checksum failed) at sun.security.jgss.krb5.Krb5Context.acceptSecContext(Krb5Context.java:741) at sun.security.jgss.GSSContextImpl.acceptSecContext(GSSContextImpl.java:323) at sun.security.jgss.GSSContextImpl.acceptSecContext(GSSContextImpl.java:267) at sun.security.jgss.krb5.Krb5Context.acceptSecContext(Krb5Context.java:741) at sun.security.jgss.GSSContextImpl.acceptSecContext(GSSContextImpl.java:323) at sun.security.jgss.GSSContextImpl.acceptSecContext(GSSContextImpl.java:267) at org.alfresco.web.site.servlet.KerberosSessionSetupPrivilegedAction.run(KerberosSessionSetupPrivilegedAction.java:95) at org.alfresco.web.site.servlet.KerberosSessionSetupPrivilegedAction.run(KerberosSessionSetupPrivilegedAction.java:44) at org.alfresco.web.site.servlet.KerberosSessionSetupPrivilegedAction.run(KerberosSessionSetupPrivilegedAction.java:44) at java.security.AccessController.doPrivileged(Native Method) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:337) at org.alfresco.web.site.servlet.SSOAuthenticationFilter.doKerberosLogon(SSOAuthenticationFilter.java:994) at org.alfresco.web.site.servlet.SSOAuthenticationFilter.doKerberosLogon(SSOAuthenticationFilter.java:994) at org.alfresco.web.site.servlet.SSOAuthenticationFilter.doFilter(SSOAuthenticationFilter.java:438) at org.alfresco.web.site.servlet.SSOAuthenticationFilter.doFilter(SSOAuthenticationFilter.java:438) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:555) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:190) at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:291) at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:774) at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:703) at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:896) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:690) at java.lang.Thread.run(Thread.java:662) Caused by: KrbException: Checksum failed at sun.security.krb5.internal.crypto.ArcFourHmacEType.decrypt(ArcFourHmacEType.java:85) at sun.security.krb5.internal.crypto.ArcFourHmacEType.decrypt(ArcFourHmacEType.java:77) at sun.security.krb5.EncryptedData.decrypt(EncryptedData.java:168) at sun.security.krb5.KrbApReq.authenticate(KrbApReq.java:268) at sun.security.krb5.KrbApReq.<init>(KrbApReq.java:134) at sun.security.jgss.krb5.InitSecContextToken.<init>(InitSecContextToken.java:79) at sun.security.jgss.krb5.Krb5Context.acceptSecContext(Krb5Context.java:724) ... 24 more Caused by: java.security.GeneralSecurityException: Checksum failed at sun.security.krb5.internal.crypto.dk.ArcFourCrypto.decrypt(ArcFourCrypto.java:388) at sun.security.krb5.internal.crypto.ArcFourHmac.decrypt(ArcFourHmac.java:74) at sun.security.krb5.internal.crypto.ArcFourHmacEType.decrypt(ArcFourHmacEType.java:83) ... 30 more

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  • How good is Word's password protection?

    - by Yuval
    Hi, I have a password protected MS-Word 2007 file that needs to stay private. How good is Word's protection? If it's not very good, can you suggest a better method for keeping the file protected? EDIT: my goal is to send the protected file to a recipient (who knows the password). I assume this recipient knows nothing about encryption/decryption, but if I absolutely have to, I'll encrypt the file and painstakingly teach the recipient how to decrypt it.

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  • Probelm After Changing password in ubuntu

    - by Narendra
    Hi All, I am using ubuntu system which uses openldap for user login authentication. For changing my login password i used "$sudo passwd" and changed it. (of course the password given is same as old one). Then onwards when i trying to run "apt" command it showing command not found. and for some other programs it showing segmentation fault. Can any one tell me why I am facing issue and how to solve this.

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  • ActiveSync / Exchange 2007 password expiration buffer on device

    - by Matt Hamende
    I'm trying to determine if there is any buffer of time from the time a password expires in AD to the time that users would stop receiving email on their mobile devices our setup is Exchange 2007 ActiveSync DC's are Server 2008 R2 primarily Android shop, with maybe a few iOS devices I've heard some rumors of people still receiving email after their password expired / changed on the domain, just want to see if anyone else has ever heard of this. Did a bit more reading, read about Token Cache in IIS 7.0 and 15min lagtime, still would like to hear any thoughts about this.

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  • GPO best practices : Security-Group Filtering Versus OU

    - by Olivier Rochaix
    Good afternoon everyone, I'm quite new to Active Directory stuff. After upgraded Functional level of our AD from 2003 to 2008 R2 (I need it to put fine-grained password policy), I then start to reorganized my OUs. I keep in mind that a good OU organization facilitate application of GPO (and maybe GPP).But in the end, it feels more natural for me to use Security-group filtering (from Scope tab) to apply my policies, instead of direct OU. Do you think it is a good practice or should I stick to OU ? We are a small organisation with 20 users and 30-35 computers. So, we got a simple OU tree, but more subtle split with security-groups. The OU tree doesn't contain any objects except at the bottom level. Each bottom level OU contains Computers,Users, and of course security groups. These security groups contains Users & Computers of the same OU. Thanks for your advices, Olivier

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  • How to get rid of superuser`s password?

    - by eleonora
    My father put a new superuser password on my laptop, and now i cant access my computer without him putting the password in. I am really helpless. How can i get rid of his superuser control? Can i delete or change the superuser thing? Please help!!!!

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  • Security log overflowing with filtering blocks

    - by Jacob
    I have a Windows 7 workstation whose security log is overflowing with the following errors: Audit Failure 3/31/2010 2:00:50 PM Microsoft-Windows-Security-Auditing 5157 Filtering Platform Connection "The Windows Filtering Platform has blocked a connection." Audit Failure 3/31/2010 2:00:50 PM Microsoft-Windows-Security-Auditing 5152 Filtering Platform Packet Drop "The Windows Filtering Platform has blocked a packet." These are not unexpected events; the firewall is expected to drop unsolicited traffic. However, I can't figure out how to tell Windows to stop writing these events to the security log. I've seen this problem before and have been able to find an answer with the use of Google, but I wasn't able to locate on this this time. Thanks!

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  • Windows SteadyState - system's security log is full

    - by Matt
    Quick version: New computer, attached to Windows domain, with SteadyState w/ Disk Protection turned on, cannot log on as domain user because Windows states 'system security log is full' Troubleshooting performed: disabled all 'restrictions' listed in SteadyState, cleared system security log, changed security log settings to overwrite entries when it becomes full, restarted computer to commit changes, verified changes were commited - still cannot log on as domain user, changed Documents and Settings folder to another partition, still cannot log on as domain user Let me know if you need a more detailed description of any steps performed. I appreciate any help you can give me.

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  • Configuring sudo to work without password

    - by aidan
    I'm trying to configure sudo to allow all users to restart apache without having to enter a password. Security concerns aside, why isn't this working? I added the line to /etc/sudoers: %admin ALL=NOPASSWD: /usr/sbin/apache2ctl $sudo -l User aidan may run the following commands on this host: (root) NOPASSWD: /usr/sbin/apache2ctl (ALL) ALL $sudo /usr/sbin/apache2ctl [sudo] password for aidan: Thanks for any help.

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  • How to save map drive password

    - by Ravisha
    I have a map drive created from ToolsMap network drive. Where in the drive is mapped to a different machine's shared folder.So each time i switch off the machine ,it asks for password when i open the drive.Is there a way to save this password?

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  • Weird Firefox Password Manager behavior

    - by hvtuananh
    Few days ago, I click on Most Visited, right click Facebook and select Forget about this site. Of course, all of my history, bookmarks and 6 saved passwords are gone Yesterday, I installed LassPass add-on, and only import Firefox saved password When I open Firefox, goto Facebook, all of my 6 password are appeared So, my question is, when I select Forget about this site, did Firefox remove my passwords completely?

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  • Protect video with password

    - by Ruben
    Are they any method to protect video files with password, so player will ask for the pasword before playback? Currently I am protecting private video files using zip compression with password but it is very inconvenient. I am forced to uncompress huge files each time before watching, and than erase it using special utilities (to avoid further restoring). Please advice.

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  • Group Policy for IE Security Zones

    - by Doug Luxem
    We are currently using the following Group Policy to control the Internet Explorer security zones: User Configuration\Administrative Templates\Windows Components\Internet Explorer\Internet Control Panel\Security Page Then setting the Site to Zone Assignment List with the various values using the following chart: Value Setting ------------------------------ 0 My Computer 1 Local Intranet Zone 2 Trusted sites Zone 3 Internet Zone 4 Restricted Sites Zone This works well; however, users are then unable to edit (or especially add) to their zone settings. Is there a way to lock in our custom zone settings while still giving users the ability to add their own sites to the security zones? Yes, I do realize the slight security risk in opening this up.

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  • Group policy not applying to security group

    - by ihavenoideawhatimdoing
    Preface: I have enough privileges to create GPOs in my OU, and have made a few of them for some simple tasks (like deploying a printer to certain users). Not actually a sysadmin...I'm a developer who is winging it. I wanted to create a GPO that would set a mapped folder for a certain security group (which I recently created and that contains only myself). Did the following: Created the GPO in MyOU - Users Removed the default Authenticted Users under Security Filtering Add the security group with my account to Security Filtering Set up the mapping via the User Configuration option Changed GPO Status to "Computer configuration settings disabled" Left WMI filtering to Closed the GPO at this point... Logged in as the target user; ran gpupdate /force Logged out, logged in, ran gpresult /r, no mention of my GPO Rebooted Logged in, re-ran gpupdate /force Logged out, logged in, ran gpresult /r, still no mention of my GPO If I log in with another completely different user, their RSOP information shows that the new GPO is being ignored due to a security restriction, so it appears to be "working" for other users. I just can't get it to actually show up in RSOP for the user it should be working. Is there anything else I can do short of rebooting endlessly and crossing my fingers?

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  • Firefox in Ubuntu : how to automate basic authentication password confirm dialog

    - by golemwashere
    Hi, I have an Ubuntu workstation with Firefox always open on a (autorefreshing) web page protected by basic auth. At startup, I have autologin and automatic Firefox start on the page and I have saved the basic auth credentials. I'd like to confirm in some automated way the username/password dialog box which pops up on the first opening of the page, or I'd like to know if there's any hack to avoid this dialog box. I tried setting the homepage to http://username%3Apassword@myserver/mypage put that doesn't stop confirmation dialog boxes.

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  • Same password for apache and samba with ldap?

    - by barbarossa12d
    Hi, I am experimenting with LDAP. As I see it, apache uses the Unix password field to get the credentials and samba the field that is specific for samba. I just use the LDAP server for a single server, LDAP runs in the same server. What I wanted is to use the same password for apache and samba (and mediawiki etc). Is it possible? If not, are there any alternatives? Thanks!

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