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• ArchBeat Link-o-Rama for 2012-08-30

  - by Bob Rhubart

  Next Generation Mobile Clients for Oracle Applications & the role of Oracle Fusion Middleware | Manish Palaparthy Manish Palaparthy examines some of Oracle's mobile applications, and takes a look at the underlying technology. Master Data Management: A Foundation for Big Data Analysis | Manouj Tahiliani "Businesses that have embraced MDM to get a single, enriched and unified view of Master data by resolving semantic discrepancies and augmenting the explicit master data information from within the enterprise with implicit data from outside the enterprise like social profiles will have a leg up in embracing Big Data solutions. This is especially true for large and medium-sized businesses in industries like Retail, Communications, Financial Services, etc that would find it very challenging to get comprehensive analytical coverage and derive long-term success without resolving the limitations of the heterogeneous topology that leads to disparate, fragmented and incomplete master data." — Manouj Tahiliani Architect Day: Boston - Agenda Update Here's the latest updated information on the session schedule and content for Oracle Technology Network Architect Day in Boston, MA on September 12, 2012. Registration is open, but seating is limited. OTN Architect Day: Boston is being held on Wednesday September 12, 2012, 8:00 a.m. – 5:00 p.m., at the Boston Marriott Burlington, One Burlington Mall Road, Burlington, MA 01803. Integrating Coherence & Java EE 6 Applications using ActiveCache | Ricardo Ferreira The seamless integration between Oracle Coherence and Oracle WebLogic Server "provides a comprehensive environment to develop applications without the complexity of extra Java code to manage cache as a dependency," explains Ricardo Ferreira, "since Oracle provides a DI (Dependency Injection) mechanism for Coherence, the same DI mechanism available in standard Java EE applications. This feature is called ActiveCache." Ricardo shows you how to configure ActiveCache in WebLogic and your Java EE application. Cloud Infrastructure has a new standard from the DMTF "Unlike a de facto standard where typically one vendor has change control over the interface, and everyone else has to reverse engineer the inner workings of it, [Cloud Infrastructure Management Interface (CIMI)] is a de jure standard that is under change control of a standards body. One reason the standard took two years to create is that we factored in use cases, requirements and contributed APIs from multiple vendors. These vendors have products shipping today and as a result CIMI has a strong foundation in real world experience." Oracle GoldenGate 11g Release Launch Webcast- September 12 The new release of Oracle GoldenGate 11g is now available for major databases and platforms. Register for this webcast and live Q&A with product experts to learn about the solution's new features. September 12, 2012. 8:00am AM and 10:00AM PT. Speakers: Doug Reid (Director, Product Management, Oracle GoldenGate), Irem Radzik (Director, Product Marketing, Oracle Data Integration Products) Thought for the Day "[When] asking skilled architects…what they do when confronted with highly complex problems… [they] would most likely answer, 'Just use Common Sense.' [A] better expression than 'common sense' is 'contextual sense'—a knowledge of what is reasonable within a given context. Practicing architects through eduction, experience and examples accumulate a considerable body of contextual sense by the time they're entrusted with solving a system-level problem…" — Eberhardt Rechtin (January 16, 1926 – April 14, 2006) Source: SoftwareQuotes.com

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• Measure Total Bandwidth for Billing

  - by TonyZ

  I am setting up a new network which customers will host their applications on. It needs to be able to scale out to a few hundred servers and each server will have several VMs on it. Right now in my test environment, after the telco router, we are using a Linux router/firewall which is then connected to a Layer 2 switch. Could be a layer 3 in the future. I need to track total bandwidth per VM for each machine, and I need to do it in a way that it is not part of the VM. Each VM will have a private class ip address which is Natted by the gateway, or we may eventually run more than firewall/reverse proxy off a layer 3 switch. So my thinking is that I can do it off of a promiscuous port on the switches, or at the gateway firewall. I would like to have an out of the box solution, preferably open source. Does anyone have suggestions on the easiest way to set this up, and the easiest tool to use. I have looked at the web sites for Nagios, Zenoss, Zabbix, ntops on the firewall, etc. It is hard to ascertain just from the web sites if they do exactly this or not. Obviously, performance is also somewhat key here. Anything running on the gateway should not drag it down doing traffic accounting. Thanks for any thoughts. Tony Zakula

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• Moving monarchs and dragons: migrating the JDK bugs to JIRA

  - by darcy

  Among insects, monarch butterflies and dragonflies have the longest migrations; migrating JDK bugs involves a long journey as well! As previously announced by Mark back in March, we've been working according to a revised plan to transition the JDK bug management from Sun's legacy system to initially an Oracle-internal JIRA instance which is afterward made visible and usable externally. I've been busily working on this project for the last few months and the team has made good progress on many aspects of the effort: JDK bugs will be imported into JIRA regardless of age; bugs will also be imported regardless of state, including closed bugs. Consequently, the JDK bug project will start pre-populated with over 100,000 existing bugs, some dating all the way back to 1994. This will allow a continuity of information and allow new issues to be linked to old ones. Using a custom import process, the Sun bug numbers will be preserved in JIRA. For example, the Sun bug with bug number 4040458 will become "JDK-4040458" in JIRA. In JIRA the project name, "JDK" in our case, is part of the bug's identifier. Bugs created after the JIRA migration will be numbered starting at 8000000; bugs imported from the legacy system have numbers ranging between 1000000 and 79999999. We're working with the bugs.sun.com team to try to maintain continuity of the ability to both read JDK bug information as well as to file new incidents. At least for now, the overall architecture of bugs.sun.com will be the same as it is today: it will be a gateway bridging to an Oracle-internal system, but the internal system will change to JIRA from the legacy database. Generally we are aiming to preserve the visibility of bugs currently viewable on bugs.sun.com; however, bugs in areas not related to the JDK will not be visible after the transition to JIRA. New incoming incidents will be sent to a separate JIRA project for initial triage before possibly being moved into the JDK project. JDK bug management leans heavily on being able to track the state of bugs in multiple releases, especially to coordinate delivering synchronized security releases (known as CPUs, critital patch updates, in Oracle parlance). For a security release, it is common for half a dozen or more release trains to be affected (for example, JDK 5, JDK 6 update, OpenJDK 6, JDK 7 update, JDK 8, virtual releases for HotSpot express, etc.). We've determined we need to track at least the tuple of (release, responsible engineer/assignee for the release, status in the release) for the release trains a fix is going into. To do this in JIRA, we are creating a separate port/backport issue type along with a custom link type to allow the multiple release information to be easily grouped and presented together. The Sun legacy system had a three-level classification scheme, product, category, and subcategory. Out of the box, JIRA only has a one-level classification, component. We've implemented a custom second-level classification, subcomponent. As part of the bug migration we've taken the opportunity to think about how bugs should be grouped under a two-level system and we'll the new system will be simpler and more regular. The main top-level components of the JDK product will include: core-libs client-libs deploy install security-libs other-libs tools hotspot For the libs areas, the primary name of the subcomportment will be the package of the API in question. In the core-libs component, there will be subcomponents like: java.lang java.lang.class_loading java.math java.util java.util:i18n In the tools component, subcomponents will primarily correspond to command names in $JDK/bin like, jar, javac, and javap. The first several bulk imports of the JDK bugs into JIRA have gone well and we're continuing to refine the import to have greater fidelity to the current data, including by reconstructing information not brought over in a structured fashion during the previous large JDK bug system migration back in 2004. We don't currently have a firm timeline of when the new system will be usable externally, but as it becomes available, I'll share further information in follow-up blog posts.

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• Is there a way to do something like LVM over NFS?

  - by warren

  I realize that since NFS is not block-level, LVM can't be used directly. However: is there a way to combine multiple NFS exports (from, say, 3 servers) into one mount point on a different server? Specifically, I'd like to be able to do this on RHEL 4 (or 5, and re-export the combined mount to my RHEL 4 server). expansion The reason I pegged lvm is that I want a bunch of exported mounts (servera:/mnt/export, serverb:/mnt/export, serverc:/mnt/export, etc) to all mount at /mnt/space so that my /mnt/space on this server (serverx) as one large filesystem. Yes, I know that re-exporting is generally a Bad Thing™ but thought it might work, if there was a way to accomplish this on a newer release as opposed to an older one From reading the unionfs docs, it appears that I can't use it over a remote connection - have I misread it? More accurately, since Union FS merges the contents of multiple branches, but makes them appear as one, it doesn't seem to go in reverse: I'm trying to mount a bunch of NFS points in a merged fashion, then write to them - not caring where data goes, a la LVM .

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• Rewriting html links with modproxyperlhtml

  - by Juancho

  I'm trying to setup an Apache reverse proxy using mod_proxy and modproxyperlhtml. This is my scenario: Domain for the proxy: http : // www.myserver.com/ Destination server (the one behind the proxy): http : // myserver.foo.com/myapp/ I'm sorry that I have to space the URL but serverfault doesn't allow me to post more than two links as "spam protection mechanism" (ridiculous on a site where you ask questions about servers and it's really probable to post more than two times the same URL's to explain your question). The idea is to map http : // www.myserver.com/ to http : // myserver.foo.com/myapp/ . Note that the path on the proxy is / and on the destination server is /myapp/. All of the examples I can find on the net (like the one on the official documentation of modproxyperlhtml) are the other way around, ie. path on the proxy /myapp/ and path on the destination server /. This is my current config that doesn't work: ProxyPass / http : // myserver.foo.com/myapp/ ProxyPassReverse / http : // myserver.foo.com/myapp/ PerlInputFilterHandler Apache2::ModProxyPerlHtml PerlOutputFilterHandler Apache2::ModProxyPerlHtml SetHandler perl-script PerlSetVar ProxyHTMLVerbose "On" LogLevel Info <Location / > # ProxyPassReverse /myapp/ PerlAddVar ProxyHTMLURLMap "/myapp/ /" PerlAddVar ProxyHTMLURLMap "http : // myserver.foo.com /" </Location> The examples use the ProxyPassReverse inside the Location directive, but on my case doesn't work, only when outside. With this configuration the links aren't being replaced as they should be, my guess is that the location isn't being found, thus the rewrite rules aren't being applied. The error log only shows that it uncompresses the content, searches it but doesn't find anything: [Tue Nov 13 0842:05 2012] [warn] [ModProxyPerlHtml] Uncompressing text/html; charset=UTF-8, Content-Encoding: gzip\n [Tue Nov 13 08:42:05 2012] [warn] [ModProxyPerlHtml] Content-type 'text/html; charset=UTF-8' match: /(text\\/javascript|text\\/html|text\\/css|text\\/xml|application\\/.*javascript|application\\/.*xml)/is\n [Tue Nov 13 08:42:05 2012] [warn] [ModProxyPerlHtml] Compressing output as Content-Encoding: gzip\n [Tue Nov 13 08:42:06 2012] [warn] [ModProxyPerlHtml] Content-type 'text/html; charset=UTF-8' match: /(text\\/javascript|text\\/html|text\\/css|text\\/xml|application\\/.*javascript|application\\/.*xml)/is\n What could be wrong ?

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• Dynamic subdomain routing

  - by Nader

  Hi everyone, I asked this question over at stackoverflow, but got very few views: http://stackoverflow.com/questions/2284917/route-web-requests-to-different-servers-based-on-subdomain Perhaps it's more applicable to this crowd. Here it is again for convenience: I have a platform where a user can create a new website using a subdomain. There will be thousands of these, eg abc.mydomain.com, def.mydomain.com . Hopefully if we are successful hundreds of thousands. I need to be able to route these domains to a different IPs to point at a particular app server. I have this mapping in a database right now. What are the best practices and recommended technologies here? I see a couple options: Have DNS setup with a wildcard CNAME entry so that all requests go to a single IP where perhaps two machines using heartbeat (for failover) know how to look up the IP in the database and then do an http redirect to the appropriate app server. This seems clunky and slow to me. Run my own DNS server that can be programatically managed such that when a new site is created a DNS entry is added. We also move sites around to different app servers, so I would need to be able to update DNS entries in close to real time. Thoughts anyone? Thanks. Update2: I've setup external wildcard DNS pointing at an HAProxy web server whose job it is to route requests to backend servers. The mapping is stored in our internal PowerDNS server. Question now is how to get the HAProxy server (or another) to use the value of the internal DNS and not some config file or access list? – Update: Based on some suggestions below, it seems like reverse-proxy server(s) is the way to go. As I'll be rebalancing the domain-server mapping, these need to work instantly and the TTL on a DNS solution could be a problem. Any recommendations on software to use considering this domain-IP data is stored in a DB, and I'll need this to be performant?

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• APC uptime 0 because of Fast

  - by demlasjr

  I have a VPS using Parallels/Plesk (11.0.9 Update #22, last updated at Oct 31, 2012 03:33 AM CentOS 6.3 (Final) x86_64) I have apache (CGI/FastCGI) installed and nginx as reverse proxy. Everything is working just fine. I installed APC for caching, but the issue is that the uptime is 0 always. It's restarting each 15 seconds or so. I checked everywhere and can't find a solution to fix it. The server have the grace restart enabled, but every 6 hours, which shouldn't influence the APC uptime. Searching in Google I found that this could be related to Apache, running with FCGId instead of FastCGI. Plesk/Apache is using this config file: usr/local/psa/admin/conf/templates/default/service/php_over_fastcgi.php which content is: <IfModule mod_fcgid.c> <Files ~ (\.php)> SetHandler fcgid-script FCGIWrapper <?php echo $VAR->server->webserver->apache->phpCgiBin ?> .p$ Options +ExecCGI allow from all </Files> Is here the issue or elsewhere ? How can I fix this to work with FastCGI and make APC working properly. I forgot to specify that even if the uptime is below one minute, APC is doing pretty good job caching (92% are hits).

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• BIND9 server types

  - by aGr

  I was configuring DNS on my server using BIND9, everything seems to work, but I have a question regarding my config file. I've ended up with this configuration in /etc/bind/named.conf.local zone "example.com" { type master; file "/etc/bind/db.example.com"; allow-transfer { 192.168.1.1; }; }; zone "1.168.192.in-addr.arpa" { type master; notify no; file "/etc/bind/db.192"; allow-transfer { 192.168.1.1; }; }; forwarders { 10.253.22.140; 10.253.22.141; }; I've read about the different type of dns server, like primary master etc. The first two parts (zone and zone) corresponds to primary dns server configuration. First record for "classic" lookup, second one for reverse. The last part (forwarders) is configuration of cache-server and contains the ISP's IP of DNS server. So all names resolved thanks to this server will be cached. Simple question: am I right? Does my description make sense? Or one server can be only either master or either cached?

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• Conditionally permitting HTTP-only requests to Tomcat?

  - by Mike

  I have 2 versions of a system: Tomcat webserver Nginx reverse-proxy sitting in front of a tomcat webserver. In version 2, nginx only ever talks to Tomcat over HTTP. A user could configure the system so that only HTTPS requests are allowed. If the user does this in Version 1 and then the XML configuration files for Tomcat takes care of this. In version 2, nginx takes care of this. The problem is this: I cannot force a user to update their Tomcat XML config files when they upgrade from version 1 to version 2 (it will be recommended that they do so) because this is done as part of a larger process. This means that if they upgrade and don't update the Tomcat config, an HTTPS request will arrive at nginx, which will proxy it over HTTP to Tomcat which will reject the request because it is not HTTPS. So I can't force an update to the Tomcat XML, and I have to use HTTP between nginx and Tomcat. Any ideas? Is there some way I can affect how Tomcat reads its config in Version 2 so that it ignores the HTTPS-only section?

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• How to Eliminate Black Bars from Powerpoint videos ?

  - by appu

  Hi, I am running a digital signage system for my client. The basic installation is a vertically oriented 42" LCD TV with a 1920x1080 screen resolution (reverse of 1920x1080 when setup normally, i.e. landscaped). Please check out the following link for a basic screen divisions layout I want to setup. http://flickr.com/photos/55097319@N03/5410208856 In the division labeled "ppt" I plan to run a powerpoint presentation. The screen division is 360x1476 resolution. As there isn't an option in powerpoint to specify slide size in terms of resolution so according to this article on indezine http://indezine.com/products/powerpoint/books/perfectmedicalpres02.html to get a screen resolution of my preference I divided 360 and 1476 each by 72 which gives me 5"x 20.5" as the slide size for my ppt. After setting up slide size as per above dimensions, I used sizer (http://brianapps.net) to resize my ppt window to 360x1476 so that when I record I do not get any black bars. But after launching recording there are side black bars visible which camtasia records and brings-inside cam studio with black bars. http://www.flickr.com/photos/55097319@N03/5409597049 My question is that after doing the above and as explained in the following video link why do I still get black bars. http://feedback.techsmith.com/techsmith/topics/eliminate_black_bars_in_your_powerpoint_recordings Is there an option in camtasia to stretch the recording to cover up black bars or any other alternative way I can get rid of those black bars while I get a ppt recorded as per my preferred dimensions. Notes: In the techsmith video above it asks to adjust my desktop screen resolution which my display chipset does not allow me to set. I set up show in powerpoint to be "browsed by an individual(window)". Also signage software only supports swf's and video file formats natively and not ppt, pptx etc. Thanks bhavani.

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• Hotmail marking messages as junk

  - by Canadaka

  I was having problems with emails sent from my server being blocked completely by Hotmail, but I found out Hotmail had blocked my IP and by contacting Hotmail I had the block removed. See this question for more info: Email sent from server with rDNS & SPF being blocked by Hotmail But now all emails from my server are going directly to recipients "Junk" folder on hotmail and I can't figure out why. Hotmail says "Microsoft SmartScreen marked this message as junk and we'll delete it after ten days." I tried contacting the same people at Hotmail who had my IP block removed, but I haven't received any reply and its been almost a week. Here are some details: I have a valid SPF record for my domain "v=spf1 a include:_spf.google.com ~all" I have reverse DNS setup I have a Sender Score of 100 https://www.senderscore.org/lookup.php?lookup=66.199.162.177&ipLookup.x=55&ipLookup.y=14 I have signed up for Microsoft's SNDS and was approved. My ip says "All of the specified IPs have normal status." Microsoft added my IP to the JMRP Database My IP is not on any credible spam lists http://www.anti-abuse.org/multi-rbl-check-results/?host=66.199.162.177 my FROM header is being sent in proper format "From: CKA <[email protected]>" Here is a test email source:

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• VPN - Accessing computer outside of network. Only works one way

  - by Dan

  I could use some help here. My ideal goal is to create a VPN for 2 macs that are in different locations so that they can share each others screens and share files. I basically want to do what Logmein's Hamachi does, but without the 5 user limitation. I have set up the VPN on my Synology NAS at my house using the PPTP protocol. I could also use OpenVPN. The good news is that I can use a laptop outside of my home network to access any computer on my network at my house. The bad news is that I can not do the reverse. I want to use a computer in my home network (same network as the VPN server) to access a computer outside of my network (which is connected via VPN successfully). My internal IP is 192.168.1.xxx PPTP VPN assigns my laptop that is outside of my network with 192.168.5.xxx, but when I try to access it remotely either with afp://192.168.5.xxx or vnc://192.168.5.xxx I can't connect using either. Is this something that I should be able to do or is VPN only one way? I've also tried openvpn with the same results. Thanks for any help! -Dan

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• How to get nginx to pass HTTP_AUTHORIZATION header to Apache

  - by codeinthehole

  Am using Nginx as a reverse proxy to an Apache server that uses HTTP Auth. For some reason, I can't get the HTTP_AUTHORIZATION header through to Apache, it seems to get filtered out by Nginx. Hence, no requests can authenticate. Note that the Basic auth is dynamic so I don't want to hard-code it in my nginx config. My nginx config is: server { listen 80; server_name example.co.uk ; access_log /var/log/nginx/access.cdk-dev.tangentlabs.co.uk.log; gzip on; proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_read_timeout 120; location / { proxy_pass http://localhost:81/; } location ~* \.(jpg|png|gif|jpeg|js|css|mp3|wav|swf|mov|doc|xls|ppt|docx|pptx|xlsx|swf)$ { if (!-f $request_filename) { break; proxy_pass http://localhost:81; } root /var/www/example; } } Anyone know why this is happening? Update - turns out the problem was something I had overlooked in my original question: mod_wsgi. The site in question here is a Django site, and it turns out that Apache does get the auth variables passed through, however mod_wsgi filters them out. The resolution is to use: WSGIPassAuthorization On See http://www.arnebrodowski.de/blog/508-Django,-mod_wsgi-and-HTTP-Authentication.html for more details

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• iptables forwarding to a dummy interface

  - by madinc

  Hi, I'm trying to accomplish the following: I have a box with a service listening on a dummy interface (say 172.16.0.1), udp port 5555. Now what I'd like to do is to take packets that arrive on interfaces eth0 (1.1.1.1:5555) and eth1 (2.2.2.2:5555) and forward them to the service on the dummy interface, and have replies go back to clients out the same physical interface they came in. Clients must think they're talking to 1.1.1.1:5555 or 2.2.2.2:5555. I think I need a mix of iptables rules and packet marking, plus some iproute rules (if it's possible at all). What I tried is to catch packets coming in from eth0 and eth1, udp port 5555, and mark them with 1 and 2 respectively, and --save-mark in the connmark. Then I used a DNAT to 172.16.0.1. The service seems to be getting the packets. Now I'm not sure how to do the reverse. It seems that for packets originating from the box, you can't do anything before the routing decision, but that would be the place to restore the marks, and thus make a routing decision based on those. Here's what I have so far: iptables -t mangle -A PREROUTING -d 1.1.1.1 -p udp --port 5555 -j MARK --set-mark 1 iptables -t mangle -A PREROUTING -d 2.2.2.2 -p udp --port 5555 -j MARK --set-mark 2 iptables -t mangle -A PREROUTING -d 1.1.1.1 -p udp --port 5555 -j CONNMARK --save-mark iptables -t mangle -A PREROUTING -d 2.2.2.2 -p udp --port 5555 -j CONNMARK --save-mark iptables -t nat -A PREROUTING -m mark --mark 1 -j DNAT --to-destination 172.16.0.1 iptables -t nat -A PREROUTING -m mark --mark 2 -j DNAT --to-destination 172.16.0.1 # What next? As I said, I'm not even sure it can be done. To give a bit of background, it's an old OpenVPN installation that cannot be upgraded (otherwise I'd install a recent version that supports multihoming natively). Thanks for any help.

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• Move 53,800+ files into 54 separate folders with ~1000 files each?

  - by ane

  Trying to import 53,800+ individual files (messages) using Gmail's POP fetcher. Gmail understandably refuses, giving the error: "Too many messages to download. There are too many messages on the other server." The folder in question looks like similar to: /usr/home/customer/Maildir/cur/1203672790.V57I586f04M867101.mail.net:2,S /usr/home/customer/Maildir/cur/1203676329.V57I586f22M520117.mail.net:2,S /usr/home/customer/Maildir/cur/1203677194.V57I586f26M688004.mail.net:2,S /usr/home/customer/Maildir/cur/1203679158.V57I586f2bM182864.mail.net:2,S /usr/home/customer/Maildir/cur/1203680493.V57I586f33M740378.mail.net:2,S /usr/home/customer/Maildir/cur/1203685837.V57I586f0bM835200.mail.net:2,S /usr/home/customer/Maildir/cur/1203687920.V57I586f65M995884.mail.net:2,S ... Using the shell (tcsh, sh, etc. on FreeBSD), what one-line command can I type to split this directory full of files into separate folders so Gmail only sees 1000 messages at a time? Something with find or ls | xargs mv maybe. Whatever is fastest. The desired output directory would now look something like: /usr/home/customer/Maildir/cur/1203672790.V57I586f04M867101.mail.net:2,S /usr/home/customer/Maildir/cur/1203676329.V57I586f22M520117.mail.net:2,S ... /usr/home/customer/set1/ (contains messages 1-1000) /usr/home/customer/set2/ (contains messages 1001-2000) /usr/home/customer/set3/ (etc.) Ideally, cron could run another command to automatically reverse the process in 1000 message increments every hour. So Gmail only sees & downloads 1000 at a time.

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• 553-Message filtered - HELO Name issue?

  - by g18c

  I am having major issues sending from my SBS2011 machine to Message labs server-13.tower-134.messagelabs.com #553-Message filtered. Refer to the Troubleshooting page at 553-http://www.symanteccloud.com/troubleshooting for more 553 information. (#5.7.1) ## I have changed the IP and hostnames from the below. I am not on any IP or domain blacklists. I have setup SPF (which includes mailchimp servers): v=spf1 mx a ip4:95.74.157.22/32 a:remote.mydomain.com include:servers.mcsv.net ~all I am sure i have setup my HELO names correctly under the Exchange Management console, sending a test email from the SBS server and looking at the header shows the following: X-Orig-To: [email protected] X-Originating-Ip: [95.74.157.22] Received: from [95.74.157.22] ([95.74.157.22:52194] helo=remote.mydomain.com) by smtp50.gate.ord1a.rsapps.net (envelope-from <[email protected]>) (ecelerity 2.2.3.49 r(42060/42061)) with ESMTP id 11/90-10010-E529C835; Mon, 02 Jun 2014 11:04:09 -0400 Received: from MYSBSSVR.mydomain.local ([fe80::3159:95a6:23f:1bef]) by MYSBSSVR.mydomain.local ([fe80::3159:95a6:23f:1bef%10]) with mapi id 14.01.0438.000; Mon, 2 Jun 2014 19:03:56 +0400 Is is the main helo name there OK and do i need to worry about the second Received block where the MYSBSVR.mydomain.local is mentioned? I have asked the ISP to set the reverse DNS for my IP to remote.mydomain.com but they have instead put remote.MYDOMAIN.com - would this case cause HELO lookups to classify this as not matching? Anything else I can do to find out why i am being filtered?

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• Oracle Fusion Supply Chain Management (SCM) Designs May Improve End User Productivity

  - by Applications User Experience

  By Applications User Experience on March 10, 2011 Michele Molnar, Senior Usability Engineer, Applications User Experience The Challenge: The SCM User Experience team, in close collaboration with product management and strategy, completely redesigned the user experience for Oracle Fusion applications. One of the goals of this redesign was to increase end user productivity by applying design patterns and guidelines and incorporating findings from extensive usability research. But a question remained: How do we know that the Oracle Fusion designs will actually increase end user productivity? The Test: To answer this question, the SCM Usability Engineers compared Oracle Fusion designs to their corresponding existing Oracle applications using the workflow time analysis method. The workflow time analysis method breaks tasks into a sequence of operators. By applying standard time estimates for all of the operators in the task, an estimate of the overall task time can be calculated. The workflow time analysis method has been recently adopted by the Applications User Experience group for use in predicting end user productivity. Using this method, a design can be tested and refined as needed to improve productivity even before the design is coded. For the study, we selected some of our recent designs for Oracle Fusion Product Information Management (PIM). The designs encompassed tasks performed by Product Managers to create, manage, and define products for their organization. (See Figure 1 for an example.) In applying this method, the SCM Usability Engineers collaborated with Product Management to compare the new Oracle Fusion Applications designs against Oracle’s existing applications. Together, we performed the following activities: Identified the five most frequently performed tasks Created detailed task scenarios that provided the context for each task Conducted task walkthroughs Analyzed and documented the steps and flow required to complete each task Applied standard time estimates to the operators in each task to estimate the overall task completion time Figure 1. The interactions on each Oracle Fusion Product Information Management screen were documented, as indicated by the red highlighting. The task scenario and script provided the context for each task.  The Results: The workflow time analysis method predicted that the Oracle Fusion Applications designs would result in productivity gains in each task, ranging from 8% to 62%, with an overall productivity gain of 43%. All other factors being equal, the new designs should enable these tasks to be completed in about half the time it takes with existing Oracle Applications. Further analysis revealed that these performance gains would be achieved by reducing the number of clicks and screens needed to complete the tasks. Conclusions: Using the workflow time analysis method, we can expect the Oracle Fusion Applications redesign to succeed in improving end user productivity. The workflow time analysis method appears to be an effective and efficient tool for testing, refining, and retesting designs to optimize productivity. The workflow time analysis method does not replace usability testing with end users, but it can be used as an early predictor of design productivity even before designs are coded. We are planning to conduct usability tests later in the development cycle to compare actual end user data with the workflow time analysis results. Such results can potentially be used to validate the productivity improvement predictions. Used together, the workflow time analysis method and usability testing will enable us to continue creating, evaluating, and delivering Oracle Fusion designs that exceed the expectations of our end users, both in the quality of the user experience and in productivity. (For more information about studying productivity, refer to the Measuring User Productivity blog.)

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• Squid: The request or reply is too large

  - by Ueli

  I have done a reverse proxy with an Apache in the background (on the same server). All works great but I can't open one page. I get the error "The request or reply is too large." In my cache.log contains: 2010/12/09 15:28:29| WARNING: http.c:971: HTTP header too large 2010/12/09 15:29:03| ctx: enter level 0: 'http://server/admin/cms/nav' 2010/12/09 15:29:03| httpProcessReplyHeader: Too large reply header 2010/12/09 15:29:03| ctx: exit level 0 In my squid.conf i disabled the limitations of the request and reply header, without success: reply_body_max_size 0 allow all request_body_max_size 0 Does someone know why that don't work? Thank you very much. Squid Version: Squid Cache: Version 2.7.STABLE3 configure options: '--prefix=/usr' '--exec_prefix=/usr' '--bindir=/usr/sbin' '--sbindir=/usr/sbin' '--libexecdir=/usr/lib/squid' '--sysconfdir=/etc/squid' '--localstatedir=/var/spool/squid' '--datadir=/usr/share/squid' '--enable-async-io' '--with-pthreads' '--enable-storeio=ufs,aufs,coss,diskd,null' '--enable-linux-netfilter' '--enable-arp-acl' '--enable-epoll' '--enable-removal-policies=lru,heap' '--enable-snmp' '--enable-delay-pools' '--enable-htcp' '--enable-cache-digests' '--enable-underscores' '--enable-referer-log' '--enable-useragent-log' '--enable-auth=basic,digest,ntlm,negotiate' '--enable-negotiate-auth-helpers=squid_kerb_auth' '--enable-carp' '--enable-follow-x-forwarded-for' '--with-large-files' '--with-maxfd=65536' 'amd64-debian-linux' 'build_alias=amd64-debian-linux' 'host_alias=amd64-debian-linux' 'target_alias=amd64-debian-linux' 'CFLAGS=-Wall -g -O2' 'LDFLAGS=' 'CPPFLAGS='

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• smtpd_helo_restrictions = ..., reject_unknown_helo_hostname occasionally rejects mail I care about, how to handle?

  - by lkraav

  I have configured my postfix as follows: smtpd_helo_restrictions = permit_sasl_authenticated, permit_mynetworks, reject_unknown_helo_hostname This is working well because most spambots don't seem to have correct reverse lookups. But every once in a while I run into mail I care about getting reject, because the mail source server admin doesn't care about configuring his server correctly. For example here the server introduces itself as "srv1.xbmc.org" which has no DNS record and fails my basic check. Jan 6 04:42:36 mail postfix/smtpd[660]: connect from xbmc.org[205.251.128.242] Jan 6 04:42:37 mail postfix/smtpd[660]: NOQUEUE: reject: RCPT from xbmc.org[205.251.128.242]: 450 4.7.1 <srv1.xbmc.org>: Helo command rejected: Host not found; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<srv1.xbmc.org> I have tried to contact the server admin several times, but there is no response. What is the optimal way to handle this from my side? Is adding these "special" hosts to mynetworks = my only option? Is perhaps my whole smtpd_helo_restrictions setup wrong in some significant way?

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• Running a service with a user from a different domain not working

  - by EWood

  I've been stuck on this for a while, not sure what permission I'm missing. I've got domain A and domain B, A trusts B, but B does not trust A. I'm trying to run a service in domain A with a user account from domain B and I keep getting Access is Denied. I'm using the FQDN after the username and the password is correct. The user account from domain B is a local administrator on the domain A server, the user account has the logon locally, and as a service permissions. Must. Get. This. Working. Update: I found something interesting in the logs I must have missed. This ought to get me pointed in the right direction. Event ID: 40961 - LsaSrv : The Security System could not establish a secured connection with the server ldap/{server fqdn/fqdn@fqdn} No authentication protocol was available. I've found a few fixes for 40961 but nothing has worked so far. I've verified reverse lookup zones. nslookup resolves the correct dc properly. still workin' at it. Upadte: In response to Evan; I ran " runas /env /user:ftp_user@fqdn "notepad" " then entered the users password and notepad came up. It seems to work successfully. This issue is now resolved. The problem is visible in the screenshot. Windows tries to use the UPN for the user account if you dig your user out of AD with the Browse button. This fails every time even with the right user and password. Simply using the SAM format (Domain\User) works. So simple, yet so annoying. Can't believe I missed this. Thanks to everyone who helped.

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• AWS VPC ELB vs. Custom Load Balancing

  - by CP510

  So I'm wondering if this is a good idea. I have a Amazon AWS VPC setup with a public and private subnets. So I all ready get the Internet Gateway and NAT. I was going to setup all my web servers (Apache2 isntances) and DB servers in the private subnet and use a Load Balancer/Reverse Proxy to pick up requests and send them into the private subnets cluster of servers. My question then, is Amazons ELB's a good use for these, or is it better to setup my own custom instance to handle the public requests and run them through the NAT using nginx or pound? I like the second option just for the sake of having a instance I can log into and check. As well as taking advantage of caching and fail2ban ddos prevention, as well as possibly using fail safes to redirect traffic. But I have no experience with their ELB's, so I thought I'd ask your opinions. Also, if you guys have an opinion on this as well, would using the second option allow me to only have 1 public IP address and be able to route SSH connections through port numbers to respective instances? Thanks in advance!

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• chrooted sftp user with write permissions to /var/www

  - by matthew

  I am getting confused about this setup that I am trying to deploy. I hope someone of you folks can lend me a hand: much much appreciated. Background info Server is Debian 6.0, ext3, with Apache2/SSL and Nginx at the front as reverse proxy. I need to provide sftp access to the Apache root directory (/var/www), making sure that the sftp user is chrooted to that path with RWX permissions. All this without modifying any default permission in /var/www. drwxr-xr-x 9 root root 4096 Nov 4 22:46 www Inside /var/www -rw-r----- 1 www-data www-data 177 Mar 11 2012 file1 drwxr-x--- 6 www-data www-data 4096 Sep 10 2012 dir1 drwxr-xr-x 7 www-data www-data 4096 Sep 28 2012 dir2 -rw------- 1 root root 19 Apr 6 2012 file2 -rw------- 1 root root 3548528 Sep 28 2012 file3 drwxr-x--- 6 www-data www-data 4096 Aug 22 00:11 dir3 drwxr-x--- 5 www-data www-data 4096 Jul 15 2012 dir4 drwxr-x--- 2 www-data www-data 536576 Nov 24 2012 dir5 drwxr-x--- 2 www-data www-data 4096 Nov 5 00:00 dir6 drwxr-x--- 2 www-data www-data 4096 Nov 4 13:24 dir7 What I have tried created a new group secureftp created a new sftp user, joined to secureftp and www-data groups also with nologin shell. Homedir is / edited sshd_config with Subsystem sftp internal-sftp AllowTcpForwarding no Match Group <secureftp> ChrootDirectory /var/www ForceCommand internal-sftp I can login with the sftp user, list files but no write action is allowed. Sftp user is in the www-data group but permissions in /var/www are read/read+x for the group bit so... It doesn't work. I've also tried with ACL, but as I apply ACL RWX permissions for the sftp user to /var/www (dirs and files recursively), it will change the unix permissions as well which is what I don't want. What can I do here? I was thinking I could enable the user www-data to login as sftp, so that it'll be able to modify files/dirs that www-data owns in /var/www. But for some reason I think this would be a stupid move securitywise.

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• ssd firmware, linux: updating large batch of drives

  - by wryfi

  I was recently hit with a fatal firmware bug that affected dozens of Crucial SSDs deployed in my datacenter. Many of the affected machines use LSI or other proprietary SAS controllers, which Crucial's bootable ISO does not recognize. None of the affected machines has a Windows license. The story is roughly similar for other SSD mfrs, including Samsung and Intel. To resolve this issue, I was forced to stop each machine, remove the affected SSD, remove the SSD from its hotswap caddy, install it temporarily into my ThinkPad, flash the firmware, reverse, rinse, repeat. It took the better part of a day to get through all the affected devices. I am looking for hardware, software, and/or purchasing strategies to ease this pain, as SSD firmware bugs seem inevitable, and our SSD footprint is growing. My first thought is to get a laptop with eSATA and one of these cables (http://www.newegg.com/Product/Product.aspx?Item=N82E16812311004). That should at least make it so I don't have to remove the drives from their caddies. Surely others have run into this. Any novel solutions?

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• Single m0n0wall - Two LAN Subnets - How To Setup

  - by SnAzBaZ

  I have two LAN subnets that I need to link together they are 192.168.4.0/24 and 192.168.5.0/24 There is a m0n0wall running on 192.168.4.1. It's LAN connection goes out to our network switch, and it's WAN port goes out to our ADSL modem. WAN is connected via PPPoE. The 192.168.4.0 subnet contains all of our office workstations. The 192.168.5.0 subnet contains development servers and test machines that need to obtain internet access and be "managed" by computers on the 192.168.4.0 subnet, but need to be on their own subnet as well. I have a Draytek 2820N configured on 192.168.5.1 with it's WAN2 port configured as 192.168.4.25 and a default gateway of 192.168.4.1. Machines on the 5.0 subnet can connect to the internet via the m0n0wall just fine. I configured a static route on the m0n0wall LAN interface, Network 192.168.5.0/24 and Gateway 192.168.4.25. Machines on the 5.0 subnet can ping machines on the 4.0 network but the reverse does not work. I configured a new firewall rule on the m0n0wall that allows any traffic on the LAN interface with a source IP of 192.168.4.25 to be allowed. The DrayTek firewall is currently configured to pass all traffic regardless. When I try to ping a machine in the 5.0 subnet from 4.0 I see this in my m0n0wall log: BLOCK 14:45:27.888157 LAN 192.168.4.25 192.168.4.37, type echoreply/0 ICMP So the reply is being sent from the 5.0 subnet but is not being allowed to reach my workstation because the firewall is blocking it. Why is the firewall blocking it ? I hope the explanation of my network is clear, please ask if you require further clarification. Thank you.

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• How do I uncompress vmlinuz to vmlinux?

  - by Lord Loh.

  I have already tried uncompress, gzip, and all other solutions that come up as google results and these have not worked for me. To get just the image search for the GZ signature - 1f 8b 08 00. > od -A d -t x1 vmlinuz | grep '1f 8b 08 00' 0024576 24 26 27 00 ae 21 16 00 1f 8b 08 00 7f 2f 6b 45 so the image begins at 24576+8 => 24584. Then just copy the image from the point and decompress it - > dd if=vmlinuz bs=1 skip=24584 | zcat > vmlinux 1450414+0 records in 1450414+0 records out 1450414 bytes (1.5 MB) copied, 6.78127 s, 214 kB/s Got these instructions verbatim from a forum online: http://www.codeguru.com/forum/showthread.php?t=415186 This process does not work for me and end up giving errors that states file not found 0024576 and all subsequent numbers. How do I proceed extracting vmlinux from vmlinuz? Thank you. EDITED: This is a reverse engineering question. I have no access to the distro to install any RPM or recompile. I start with nothing but vmlinuz.

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