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  • 13 Lösungen für eine höhere Sicherheit in einer Oracle Datenbank (Best Practices)

    - by C.Muetzlitz
    Externe Einflüsse wie Gesetze fordern die IT auf, (unsere) Daten zu schützen. Doch wie prüft man die eingestellte Sicherheit einer Oracle Datenbank überhaupt? Ist die geforderte Sicherheit ausreichend umgesetzt und zwar im Idealfall entsprechend dem notwendigen Schutzbedarf? Wann haben Sie eigentlich die Sicherheit Ihrer Oracle Datenbank das letzte Mal überprüft? Und noch besser gefragt, kennen Sie die Bedrohungen und die davon abgeleiteten Risiken? Alles Fragen deren Antworten ein verantwortlicher Anwendungsbesitzer sofort parat haben sollte oder sehen Sie das anders? Wie kann man sich am besten vor Bedrohungen schützen? Die einzige richtige Antwort auf diese Frage ist, durch Informationen und daraus abgeleitetes Wissen. Nun umfassen Informationen und das darin versteckte Wissen wahrscheinlich sehr viele Quellen. D.h. es wird immer schwieriger sich das richtige Wissen anzueignen und dieses Wissen für den Schutz von Daten und Datenbanken anzuwenden.Betrachtet man die Oracle Datenbank, dann empfehle ich zwei wesentliche Bereiche, die man tun muss bzw. wissen sollte. Die Best Practices Lösungen kennen, die man implementieren sollte und teilweise muss, um gute Sicherheit zu garantieren.Ich nenne diesen Bereich „13 Lösungen für eine höhere Sicherheit in einer Oracle Datenbank (Best Practices)“ Wie sieht der wirkliche Sicherheitszustand einer Oracle Datenbank aus.Diesen Bereich nenne ich „Check Oracle DB Security“ In diesem Beitrag möchte ich Sie nun in die Grundlagen einer guten Oracle Datenbank Sicherheit einführen und Sie befähigen, den Sicherheitszustand Ihrer Datenbank selber bestimmen zu können. 13 Lösungen für eine höhere Sicherheit in einer Oracle Datenbank (Best Practices)“  Password-Management aktiveren:Seien Sie sich bewusst, dass schwache Passwords eine hohe Bedrohung bedeuten. Aktivieren Sie ein vernünftiges Password Management Kennen Sie den Funktionsumfang Ihrer aktuellen Datenbank Version, auch die Funktionen, die nicht mehr unterstützt werden.Der "New Feature und Upgrade Guide" sollte eine Pflichtlektüre werden. Implementieren Sie eine passende Mindestsicherheit.Oracle liefert hier viele Vorgaben. Haben Sie das Rollen- und Account Management im GriffHier geht es um eine kontrollierte Privilegien-Vergabe (Least Privileg), eine Zwecktrennung im Account Management und eine andauernde Überprüfung des Rollenmanagements und Zugriffskonzepts Sicheres Datenbank Link Konzept implementierenGerade im Bereich der Datenintegration werden wiederholt DB Links in der Datenbank konfiguriert. Diese Links eröffnen u.U. unkontrollierte Zugriffe auf entfernte Datenbanken. Tracken Sie den Zugriff und setzen Sie ein sicheres DB Link Konzept um. Oracle liefert hier die entsprechenden Vorgaben. Definieren Sie Schutz-Policies für Ihre Anwendungen.Hierunter fällt z.B. ein richtiges Anwendungs-Owner und Anwendungs-User Setup Implementieren Sie den notwendigen Datenschutz für wichtige DatenKennen Sie die Daten, die geschützt werden müssen und schützen Sie diese angemessen. Kontrollieren Sie den Ressourcenverbrauch in Ihrer Datenbank Implementieren Sie eine sinnvolle Zwecktrennung in der DatenbankAuch bei der Datenbank ist es sinnvoll eine Zwecktrennung zu implementieren. Schalten Sie eine sinnvolle und gesetzeskonforme Protokollierung ein.Gesetze erfordern das und Oracle gibt eine Mindestprotokollierung vor. Implementieren Sie Prozesse, die den guten Zustand der Datenbank erhalten Führen Sie regelmäßige Health- Checks durchOracle liefert z.B. mit dem Enterprise Manager eine vollständige Library. Definieren Sie ein funktionierendes Patch-ManagementKennen Sie die Critical Patch Updates und handeln Sie falls notwendig. Check Oracle DB Security oder wer den Sicherheitszustand nicht kennt, wird auch keine Maßnahmen ergreifen Den Sicherheitszustand einer Oracle Datenbank zu überprüfen, ist sehr wichtig. Hierfür kann man verschiedene Anwendungen nutzen, die im Markt erhältlich sind. Eine gute Entscheidung wäre z.B. den Oracle Enterprise Manager (Cloud Control) mit dem Lifecycle Management zu nutzen, der periodisch den Sicherheitszustand für Sie ermittelt. Eine manuelle Überprüfung ist auch möglich, erfordert aber tiefes Wissen. Doch auch trotz der hohen Wissensanforderung ist ein Verstehen, wie man eine Oracle Datenbank manuell auf Sicherheit überprüft, wichtig. Vertrauen Sie nicht mehr auf Vermutungen, sondern nehmen Sie die Sicherheit Ihrer Datenbank ernst und lernen Sie den realen Zustand Ihrer Datenbank kennen. Wissen über reale Zustände und Wissen über geeignete Konzepte schützen. Erst dann können Sie entscheiden, welche Maßnahmen tatsächlich notwendig sind. Weiterführende Informationen: Oracle Online Dokumentation für die Datenbank Verschiedene Artikel in der Knowledge Base vom Oracle Support Das neue Buch „Oracle Security in der Praxis. Vollständige Sicherheitsüberprüfung Ihrer Oracle Datenbank“.

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  • Custom Filter Problem?

    - by mr.lost
    greetings all,iam using spring security 3 and i want to perform some logic(saving some data in the session) when the user is visiting the site and he's remembered so i extended the GenericFilterBean class and performed the logic in the doFilter method then complete the filter chain by calling the chain.doFilter method,and then inserted that filter after the remember me filter in the security.xml file? but there's a problem is the filter is executed on each page even if the user is remembered or not is there's something wrong with the filter implementation or the position of the filter? and i have a simple question,is the filter chain by default is executed on each page? and when making a custom filter should i add it to the web.xml too? the filter class: package projects.internal; import java.io.IOException; import javax.servlet.FilterChain; import javax.servlet.ServletException; import javax.servlet.ServletRequest; import javax.servlet.ServletResponse; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.security.core.Authentication; import org.springframework.security.core.context.SecurityContextHolder; import org.springframework.web.filter.GenericFilterBean; import projects.ProjectManager; public class rememberMeFilter extends GenericFilterBean { private ProjectManager projectManager; @Autowired public rememberMeFilter(ProjectManager projectManager) { this.projectManager = projectManager; } @Override public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException { System.out.println("In The Filter"); Authentication auth = (Authentication) SecurityContextHolder .getContext().getAuthentication(); HttpServletResponse response = ((HttpServletResponse) res); HttpServletRequest request = ((HttpServletRequest) req); // if the user is not remembered,do nothing if (auth == null) { chain.doFilter(request, response); } else { // the user is remembered save some data in the session System.out.println("User Is Remembered"); chain.doFilter(request, response); } } } the security.xml file: <beans:beans xmlns="http://www.springframework.org/schema/security" xmlns:beans="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security-3.0.xsd"> <global-method-security pre-post-annotations="enabled"> </global-method-security> <http use-expressions="true" > <remember-me data-source-ref="dataSource"/> <intercept-url pattern="/" access="permitAll" /> <intercept-url pattern="/images/**" filters="none" /> <intercept-url pattern="/scripts/**" filters="none" /> <intercept-url pattern="/styles/**" filters="none" /> <intercept-url pattern="/p/login" filters="none" /> <intercept-url pattern="/p/register" filters="none" /> <intercept-url pattern="/p/forgot_password" filters="none" /> <intercept-url pattern="/p/**" access="isAuthenticated()" /> <custom-filter after="REMEMBER_ME_FILTER" ref="rememberMeFilter" /> <form-login login-processing-url="/j_spring_security_check" login-page="/p/login" authentication-failure-url="/p/login?login_error=1" default-target-url="/p/dashboard" authentication-success-handler-ref="myAuthenticationHandler" always-use-default-target="false" /> <logout/> </http> <beans:bean id="myAuthenticationHandler" class="projects.internal.myAuthenticationHandler" /> <beans:bean id="rememberMeFilter" class="projects.internal.rememberMeFilter" > </beans:bean> <authentication-manager alias="authenticationManager"> <authentication-provider> <password-encoder hash="md5" /> <jdbc-user-service data-source-ref="dataSource" /> </authentication-provider> </authentication-manager> </beans:beans> any help?

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  • Spring Custom Filter Problem?

    - by mr.lost
    greetings all,iam using spring security 3 and i want to perform some logic(saving some data in the session) when the user is visiting the site and he's remembered so i extended the GenericFilterBean class and performed the logic in the doFilter method then complete the filter chain by calling the chain.doFilter method,and then inserted that filter after the remember me filter in the security.xml file? but there's a problem is the filter is executed on each page even if the user is remembered or not is there's something wrong with the filter implementation or the position of the filter? and i have a simple question,is the filter chain by default is executed on each page? and when making a custom filter should i add it to the web.xml too? the filter class: package projects.internal; import java.io.IOException; import javax.servlet.FilterChain; import javax.servlet.ServletException; import javax.servlet.ServletRequest; import javax.servlet.ServletResponse; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.security.core.Authentication; import org.springframework.security.core.context.SecurityContextHolder; import org.springframework.web.filter.GenericFilterBean; import projects.ProjectManager; public class rememberMeFilter extends GenericFilterBean { private ProjectManager projectManager; @Autowired public rememberMeFilter(ProjectManager projectManager) { this.projectManager = projectManager; } @Override public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException { System.out.println("In The Filter"); Authentication auth = (Authentication) SecurityContextHolder .getContext().getAuthentication(); HttpServletResponse response = ((HttpServletResponse) res); HttpServletRequest request = ((HttpServletRequest) req); // if the user is not remembered,do nothing if (auth == null) { chain.doFilter(request, response); } else { // the user is remembered save some data in the session System.out.println("User Is Remembered"); chain.doFilter(request, response); } } } the security.xml file: <beans:beans xmlns="http://www.springframework.org/schema/security" xmlns:beans="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security-3.0.xsd"> <global-method-security pre-post-annotations="enabled"> </global-method-security> <http use-expressions="true" > <remember-me data-source-ref="dataSource"/> <intercept-url pattern="/" access="permitAll" /> <intercept-url pattern="/images/**" filters="none" /> <intercept-url pattern="/scripts/**" filters="none" /> <intercept-url pattern="/styles/**" filters="none" /> <intercept-url pattern="/p/login" filters="none" /> <intercept-url pattern="/p/register" filters="none" /> <intercept-url pattern="/p/forgot_password" filters="none" /> <intercept-url pattern="/p/**" access="isAuthenticated()" /> <custom-filter after="REMEMBER_ME_FILTER" ref="rememberMeFilter" /> <form-login login-processing-url="/j_spring_security_check" login-page="/p/login" authentication-failure-url="/p/login?login_error=1" default-target-url="/p/dashboard" authentication-success-handler-ref="myAuthenticationHandler" always-use-default-target="false" /> <logout/> </http> <beans:bean id="myAuthenticationHandler" class="projects.internal.myAuthenticationHandler" /> <beans:bean id="rememberMeFilter" class="projects.internal.rememberMeFilter" > </beans:bean> <authentication-manager alias="authenticationManager"> <authentication-provider> <password-encoder hash="md5" /> <jdbc-user-service data-source-ref="dataSource" /> </authentication-provider> </authentication-manager> </beans:beans> any help?

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  • Nginx + Nagios : 502 Bad gateway

    - by MrROY
    I have a fully new install nagios, but I can't access to it. Here's my Nginx config: server{ listen 80; server_name 61.148.45.10; # blahblah # Nagios Monitoring location /nagios3/ { proxy_pass http://127.0.0.1:80; } } Nagios is installed step by step(From this Linode guide): sudo apt-get install -y nagios3 Then I try to visit http://ip-address/nagios3/, but it shows 502 bad gateway. How do I deal with this ? This is my /var/log/syslog: Oct 25 14:18:17 my-server nagios3: SERVICE ALERT: localhost;Disk Space;WARNING;SOFT;1;DISK WARNING - free space: /boot 43 MB (20% inode=99%): Oct 25 14:19:07 my-server nagios3: SERVICE ALERT: localhost;HTTP;WARNING;SOFT;1;HTTP WARNING: HTTP/1.1 403 Forbidden - 319 bytes in 0.000 second response time Oct 25 14:19:17 my-server nagios3: SERVICE ALERT: localhost;Disk Space;WARNING;SOFT;2;DISK WARNING - free space: /boot 43 MB (20% inode=99%): Oct 25 14:20:07 my-server nagios3: SERVICE ALERT: localhost;HTTP;WARNING;SOFT;2;HTTP WARNING: HTTP/1.1 403 Forbidden - 319 bytes in 0.000 second response time Oct 25 14:20:17 my-server nagios3: SERVICE ALERT: localhost;Disk Space;WARNING;SOFT;3;DISK WARNING - free space: /boot 43 MB (20% inode=99%): Oct 25 14:21:07 my-server nagios3: SERVICE ALERT: localhost;HTTP;WARNING;SOFT;3;HTTP WARNING: HTTP/1.1 403 Forbidden - 319 bytes in 0.000 second response time Oct 25 14:21:17 my-server nagios3: SERVICE ALERT: localhost;Disk Space;WARNING;HARD;4;DISK WARNING - free space: /boot 43 MB (20% inode=99%): Oct 25 14:21:17 my-server nagios3: SERVICE NOTIFICATION: root;localhost;Disk Space;WARNING;notify-service-by-email;DISK WARNING - free space: /boot 43 MB (20% inode=99%): Oct 25 14:21:17 my-server postfix/pickup[24474]: 4F89F394034C: uid=109 from=<nagios> Oct 25 14:21:17 my-server postfix/cleanup[27756]: 4F89F394034C: message-id=<20131025062117.4F89F394034C@my-server> Oct 25 14:21:17 my-server postfix/qmgr[24475]: 4F89F394034C: from=<nagios@[email protected]>, size=594, nrcpt=1 (queue active) Oct 25 14:21:17 my-server postfix/local[27758]: 4F89F394034C: to=<root@localhost>, relay=local, delay=0.15, delays=0.11/0/0/0.04, dsn=2.0.0, status=sent (delivered to mailbox) Oct 25 14:21:17 my-server postfix/qmgr[24475]: 4F89F394034C: removed Oct 25 14:22:07 my-server nagios3: SERVICE ALERT: localhost;HTTP;WARNING;HARD;4;HTTP WARNING: HTTP/1.1 403 Forbidden - 319 bytes in 0.000 second response time Oct 25 14:22:07 my-server nagios3: SERVICE NOTIFICATION: root;localhost;HTTP;WARNING;notify-service-by-email;HTTP WARNING: HTTP/1.1 403 Forbidden - 319 bytes in 0.000 second response time Oct 25 14:22:07 my-server postfix/pickup[24474]: 219CA3940381: uid=109 from=<nagios> Oct 25 14:22:07 my-server postfix/cleanup[27756]: 219CA3940381: message-id=<20131025062207.219CA3940381@my-server> Oct 25 14:22:07 my-server postfix/qmgr[24475]: 219CA3940381: from=<nagios@[email protected]>, size=605, nrcpt=1 (queue active) Oct 25 14:22:07 my-server postfix/local[27758]: 219CA3940381: to=<root@localhost>, relay=local, delay=0.12, delays=0.07/0/0/0.05, dsn=2.0.0, status=sent (delivered to mailbox) Oct 25 14:22:07 my-server postfix/qmgr[24475]: 219CA3940381: removed Oct 25 14:39:01 my-server CRON[28242]: (root) CMD ( [ -x /usr/lib/php5/maxlifetime ] && [ -d /var/lib/php5 ] && find /var/lib/php5/ -depth -mindepth 1 -maxdepth 1 -type f -cmin +$(/usr/lib/php5/maxlifetime) ! -execdir fuser -s {} 2>/dev/null \; -delete) And there're lot of 127.0.0.1 visit in nginx log, but I actually visit from a external ip: 127.0.0.1 - - [25/Oct/2013:14:21:02 +0800] "GET /nagios3/ HTTP/1.0" 502 575 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/3 0.0.1599.69 Safari/537.36" 127.0.0.1 - - [25/Oct/2013:14:21:02 +0800] "GET /nagios3/ HTTP/1.0" 502 575 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/3 0.0.1599.69 Safari/537.36" 127.0.0.1 - - [25/Oct/2013:14:21:02 +0800] "GET /nagios3/ HTTP/1.0" 502 575 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/3 0.0.1599.69 Safari/537.36"

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  • Security Trimmed Cross Site Collection Navigation

    Ad:: SharePoint 2007 Training in .NET 3.5 technologies (more information). This feed URL has been discontinued. Please update your reader's URL to : http://feeds.feedburner.com/winsmarts Read full article .... ...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • mkisofs creating iso file with no error or warning but iso corrupted

    - by user1291203
    I'm trying to make a dvd from mpeg2 files. First of all i'm on windows 7. I'm using the following binaries: jpeg2yuv mpeg2enc mplex spumux dvdauthor Now everything is fine till this point absolutely no errors, but then i'm using mkisofs to make the iso file also no errors or warnings. It creates the iso file but i cannot burn it to dvd it said: The selected disk image file isn't valid. I tried it on a Mac osx as well and there the iso is worked fine. It is an NTSC iso. I'm totaly stuck with this problem any help is really appreciated.

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  • Week in Geek: Google Asks for Kids’ Social Security Numbers Edition

    - by Asian Angel
    This week we learned how to make hundreds of complex photo edits in seconds with Photoshop actions, use an Android Phone as a modem with no rooting required, install a wireless card in Linux using Windows drivers, change Ubuntu’s window borders with Emerald, how noise reducing headphones work, and more. Photo by Julian Fong. Latest Features How-To Geek ETC Should You Delete Windows 7 Service Pack Backup Files to Save Space? What Can Super Mario Teach Us About Graphics Technology? Windows 7 Service Pack 1 is Released: But Should You Install It? How To Make Hundreds of Complex Photo Edits in Seconds With Photoshop Actions How to Enable User-Specific Wireless Networks in Windows 7 How to Use Google Chrome as Your Default PDF Reader (the Easy Way) Preliminary List of Keyboard Shortcuts for Unity Now Available Bring a Touch of the Wild West to Your Desktop with the Rango Theme for Windows 7 Manage Your Favorite Social Accounts in Chrome and Iron with Seesmic E.T. II – Extinction [Fake Movie Sequel Video] Remastered King’s Quest Games Offer Classic Gaming on Modern Machines Compare Your Internet Cost and Speed to Global Averages [Infographic]

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  • Linux : Forward users mail using exim4 server (newbiw warning)

    - by llazzaro
    Hello, I have a network of linux server, one of them is running exim4 that server could send [email protected]. At exim4 server, I had setup an alias for the users accounts ...for example root : [email protected] But I have other server, if I put the alias email is marked as spam...since they arent using exim4 server. I want to configure the other server to use that exim4 server, in order to dont get the mails mark as spam. Well I know this is really newbie question, but searching at google is difficult since it confuses exim4 server configuration than the client configuration to use exim4 server. Remember, I want root@server1,root@server2,etc mails send via exim4 server!

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  • IIS 7 Url Rewrite Rules for SEO and Security

    - by The Official Microsoft IIS Site
    Before IIS 7, if you wanted to do url rewriting with IIS 6 you had to use a 3rd party program such as ISAPI Rewrite by helicontech.com. This was a good program but it wasn’t native to IIS and there were limitations such as a site hosting more than 1 domain with different applications running. With IIS 7 url rewriting and redirecting has never been easier thanks to Microsoft’s Url Rewrite module. The rewriting is done by rules which are specified in the web.config under <system.webserver>...(read more)

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  • Skip all warning prompts on ACPI shutdown?

    - by N Rahl
    When I issue an ACPI shutdown command to a Windows XP guest machine from the host VM server, I want Windows to shutdown. The problem is, Windows always wants to ask some question or another, rather than just shutting down. I need shutdown to be reliable, no matter what is running or going on, so I can automate shutdowns from the host machine. But I want it to be as graceful as possible, rather than just pulling the plug. Some problems: If a user is logged in, ACPI shutdown causes a box to appear that says, "are you sure you want to shutdown while other users are logged in"? And this prevents shutdown until someone connects to the machine and clicks "yes". In this case, it should try its best to gracefully log out all users, using force if necessary, and then shutdown without promoting. Busy or non-responding programs or programs asking to save data can prevent Windows from shutting down until a user answers a prompt. This should attempt to save data, wait maybe 30 seconds for non-responding programs, but should get aggressive with stubborn programs. "nope, time's up! 3,2,1, Goodbye!" Is there a registry setting that I can change from: ACPI_Shutdown: "Shut down if Windows feels like it" to ACPI_Shutdown: "Just do it. Kill programs, bump users, try to be graceful about it, but when I come back, I expect you to be off." This should respond to the ACPI shutdown command, and not be a script on windows, unless that script is triggered by the ACPI power button. I'm hoping this can be changed with registry options.

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  • Implementing the Security Development Lifecycle (SDL) at a Large Insurance Company

    Find out how Cigital, an SDL Pro Network member, assisted a large insurance company adopt the Microsoft SDL. The case study describes both the business drivers leading up to the company's recognizing the need for incorporating the SDL within their development process as well as the initial roll out of the SDL....Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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