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• What is SOA ?

  - by llaszews

  First, let’s mention what SOA is not: • SOA is not the same thing as web services. Web Services implies the use of standard such as Java/JAX-RPC, .NET or REST. Web Services also implies the use of a WSDL, SOAP, and/or J2EE Connector Architecture (J2EE CA) and HTTP. SOA architectures can be implemented using J2EE CA, XML file transfer or Remote Procedural Call (RPC) over File Transfer Protocol (FTP), TCP/IP, Remote Method Invocation (RMI) or other protocols. In other words, Web Services are a very specific set of technologies. SOA is a concept and can be implemented in many different ways. Some very rudimentary, such as transfering flat files between applications. • SOA will not solve all of your problems. It will make your business more agile, increase business visibility, reduce integration costs and provide better reuse. However, if you don’t need help in these area or expect SOA to cure all of your IT problems, you are looking in the wrong place. • The concepts behind SOA are not new, but SOA is also not mature. SOA as it stands today has really only been around for 5 years. The concepts of standards based protocol handlers, predefined communication schemas and remote method invocation have been around for decades. So, what is SOA? SOA is an architectural blueprint, a way of developing applications, and a set of best practices. SOA is not an ‘out of the box’ solution you buy, install and then have up and running in a matter of months. SOA is a journey to a better way of doing business and the technology architecture to support this better way of doing business. SOA is also a broader set of technologies including more then just web services. Techologies like an Enterpirse Service Bus (ESB), Business Processs Execution Language (BPEL), message queues and Business Activity Monitoring (BAM) all are part of a SOA architecture. So, what is SOA? SOA is an architectural blueprint, a way of developing applications, and a set of best practices. SOA is not an ‘out of the box’ solution you buy, install and then have up and running in a matter of months. SOA is a journey to a better way of doing business and the technology architecture to support this better way of doing business. SOA is also a broader set of technologies including more then just web services. Techologies like an Enterpirse Service Bus (ESB), Business Processs Execution Language (BPEL), message queues and Business Activity Monitoring (BAM) all are part of a SOA architecture. Read more here: Oracle Modernization Solutions

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• determine if udp socket can be accessed via external client

  - by JohnMerlino

  I don't have access to company firewall server. but supposedly the port 1720 is open on my one ubuntu server. So I want to test it with netcat: sudo nc -ul 1720 The port is listening on the machine ITSELF: sudo netstat -tulpn | grep nc udp 0 0 0.0.0.0:1720 0.0.0.0:* 29477/nc The port is open and in use on the machine ITSELF: lsof -i -n -P | grep 1720 gateway 980 myuser 8u IPv4 187284576 0t0 UDP *:1720 Checked the firewall on current server: sudo ufw allow 1720/udp Skipping adding existing rule Skipping adding existing rule (v6) sudo ufw status verbose | grep 1720 1720/udp ALLOW IN Anywhere 1720/udp ALLOW IN Anywhere (v6) But I try echoing data to it from another computer (I replaced the x's with the real integers): echo "Some data to send" | nc xx.xxx.xx.xxx 1720 But it didn't write anything. So then I try with telnet from the other computer as well: telnet xx.xxx.xx.xxx 1720 Trying xx.xxx.xx.xxx... telnet: connect to address xx.xxx.xx.xxx: Operation timed out telnet: Unable to connect to remote host Although I don't think telnet works with udp sockets. I ran nmap from another computer within the same local network and this is what I got: sudo nmap -v -A -sU -p 1720 xx.xxx.xx.xx Starting Nmap 5.21 ( http://nmap.org ) at 2013-10-31 15:41 EDT NSE: Loaded 36 scripts for scanning. Initiating Ping Scan at 15:41 Scanning xx.xxx.xx.xx [4 ports] Completed Ping Scan at 15:41, 0.10s elapsed (1 total hosts) Initiating Parallel DNS resolution of 1 host. at 15:41 Completed Parallel DNS resolution of 1 host. at 15:41, 0.00s elapsed Initiating UDP Scan at 15:41 Scanning xtremek.com (xx.xxx.xx.xx) [1 port] Completed UDP Scan at 15:41, 0.07s elapsed (1 total ports) Initiating Service scan at 15:41 Initiating OS detection (try #1) against xtremek.com (xx.xxx.xx.xx) Retrying OS detection (try #2) against xtremek.com (xx.xxx.xx.xx) Initiating Traceroute at 15:41 Completed Traceroute at 15:41, 0.01s elapsed NSE: Script scanning xx.xxx.xx.xx. NSE: Script Scanning completed. Nmap scan report for xtremek.com (xx.xxx.xx.xx) Host is up (0.00013s latency). PORT STATE SERVICE VERSION 1720/udp closed unknown Too many fingerprints match this host to give specific OS details Network Distance: 1 hop TRACEROUTE (using port 1720/udp) HOP RTT ADDRESS 1 0.13 ms xtremek.com (xx.xxx.xx.xx) Read data files from: /usr/share/nmap OS and Service detection performed. Please report any incorrect results at http://nmap.org/submit/ . Nmap done: 1 IP address (1 host up) scanned in 2.04 seconds Raw packets sent: 27 (2128B) | Rcvd: 24 (2248B). The only thing I can think of is a firewall or vpn issue. Is there anything else I can check for before requesting that they look at the firewall server again?

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• sony vaio WLAN problem using 12.04

  - by Fredrik

  I'm unable to get my WLAN to work for my Sony Vaio model VPCF23C5E No problem connecting from windows, smartphones etc. $ sudo lshw -C network; lsb_release -a; uname -a; sudo rfkill list; dmesg | grep -i firm *-network description: Wireless interface product: AR9485 Wireless Network Adapter vendor: Atheros Communications Inc. physical id: 0 bus info: pci@0000:02:00.0 logical name: wlan0 version: 01 serial: 64:27:37:92:99:0f width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list rom ethernet physical wireless configuration: broadcast=yes driver=ath9k driverversion=3.2.0-29-generic firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11bgn resources: irq:16 memory:f7000000-f707ffff memory:f7080000-f708ffff *-network description: Ethernet interface product: RTL8111/8168B PCI Express Gigabit Ethernet controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:05:00.0 logical name: eth0 version: 06 serial: f0:bf:97:dd:b2:bd size: 1Gbit/s capacity: 1Gbit/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl_nic/rtl8168e-1.fw ip=192.168.1.4 latency=0 link=yes multicast=yes port=MII speed=1Gbit/s resources: irq:50 ioport:9000(size=256) memory:e2104000-e2104fff memory:e2100000-e2103fff LSB Version: core-2.0-amd64:core-2.0-noarch:core-3.0-amd64:core-3.0-noarch:core-3.1-amd64:core-3.1-noarch:core-3.2-amd64:core-3.2-noarch:core-4.0-amd64:core-4.0-noarch Distributor ID: Ubuntu Description: Ubuntu 12.04.1 LTS Release: 12.04 Codename: precise Linux siriedit 3.2.0-29-generic #46-Ubuntu SMP Fri Jul 27 17:03:23 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux 1: phy0: Wireless LAN Soft blocked: no Hard blocked: no 2: hci0: Bluetooth Soft blocked: no Hard blocked: no [ 1.287449] [Firmware Bug]: ACPI: BIOS _OSI(Linux) query ignored [ 18.273582] [Firmware Bug]: ACPI(NGFX) defines _DOD but not _DOS Seen some proposed solution e.g. Wireless network cannot be enabled for Sony VAIO E series but answers there don't solve my problem... I'm out of ideas :-( What else can I check? update $ ifconfig -a eth0 Link encap:Ethernet HWaddr f0:bf:97:dd:b2:bd inet addr:192.168.1.4 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::f2bf:97ff:fedd:b2bd/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:5072 errors:0 dropped:0 overruns:0 frame:0 TX packets:4444 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:4568435 (4.5 MB) TX bytes:610624 (610.6 KB) Interrupt:50 Base address:0xc000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:1498 errors:0 dropped:0 overruns:0 frame:0 TX packets:1498 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:114156 (114.1 KB) TX bytes:114156 (114.1 KB) wlan0 Link encap:Ethernet HWaddr 64:27:37:92:99:0f inet addr:192.168.1.5 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::6627:37ff:fe92:990f/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1277 errors:0 dropped:0 overruns:0 frame:0 TX packets:472 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:483155 (483.1 KB) TX bytes:61031 (61.0 KB)

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• JCP.next.3: time to get to work

  - by Patrick Curran

  As I've previously reported in this blog, we planned three JSRs to improve the JCP’s processes and to meet our members’ expectations for change. The first - JCP.next.1, or more formally JSR 348: Towards a new version of the Java Community Process - was completed in October 2011. This focused on a small number of simple but important changes to make our process more transparent and to enable broader participation. We're already seeing the benefits of these changes as new and existing JSRs adopt the new requirements. However, because we wanted to complete this JSR quickly we deliberately postponed a number of more complex items, including everything that would require modifying the JSPA (the legal agreement that members sign when they join the organization) to a follow-on JSR. The second JSR (JSR 355: JCP Executive Committee Merge) is in progress now and will complete later this year. This JSR is even simpler than the first, and is focused solely on merging the two Executive Committees into one for greater efficiency and to encourage synergies between the Java ME and Java SE platforms. Continuing the momentum to move Java and the JCP forward we have just filed the third JSR (JCP.next.3) as JSR 358: A major revision of the Java Community Process. This JSR will modify the JSPA as well as the Process Document, and will tackle a large number of complex issues, many of them postponed from JSR 348. For these reasons we expect to spend a considerable amount of time working on it - at least a year, and probably more. The current version of the JSPA was created back in 2002, although some minor changes were introduced in 2005. Since then the organization and the environment in which we operate have changed significantly, and it is now time to revise our processes to ensure that they meet our current needs. We have a long list of topics to be considered, including the role of independent implementations (those not derived from the Reference Implementation), licensing and open source, ensuring that our new transparency requirements are implemented correctly, compatibility policy and TCKs, the role of individual members, patent policy, and IP flow. The Expert Group for JSR 358, as with all process-change JSRs, consists of all members of the Executive Committees. Even though the JSR has just been filed we started discussions on the various topics several months ago (see the EC's meeting minutes for details) and our EC members - including the new members who joined within the last year or two - are actively engaged. Now it's your opportunity to get involved. As required by version 2.8 of our Process (introduced with JSR 348) we will conduct all our business in the open. We have a public java.net project where you can follow and participate in our work. All of our deliberations will be copied to a public Observer mailing list, we'll track our issues on a public Issue Tracker, and all our documents (meeting agendas and minutes, task lists, working drafts) will be published in our Document Archive. We're just getting started, but we do want your input. Please visit us on java.net where you can learn how to participate. Let's get to work...

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• Correct permissions for /var/www and wordpress

  - by dpbklyn

  Hello and thank you in advance! I am relatively new to ubuntu, so please excuse the newbie-ness of this question... I have set up a LAMP server (ubuntu server 11.10) and I have access via SSH and to the "it works" page from a web browser from inside my network (via ip address) and from outside using dyndns. I have a couple of projects in development with some outside developers and I want to use this server as a development server for testing and for client approvals. We have some Wordpress projects that sit in subdirectories in /var/www/wordpress1 /var/www/wordpress2, etc. I cannot access these sub directories from a browser in order to set up WP--or (I assume) to see the content on a browser. I get a 403 Forbidden error on my browser. I assume that this is a permissions problem. Can you please tell me the proper settings for the permissions to: 1) Allow the developers and me to read/write. 2) to allow WP set up and do its thing 3) Allow visitors to access the site(s) via the web. I should also mention that the subfolder are actually simlinks to folder on another internal hdd--I don't think this will make a difference, but I thought I should disclose. Since I am a newbie to ubuntu, step-by-step directions are greatly appreciated! Thank you for taking the time! dp total 12 drwxr-xr-x 2 root root 4096 2012-07-12 10:55 . drwxr-xr-x 13 root root 4096 2012-07-11 20:02 .. lrwxrwxrwx 1 root root 43 2012-07-11 20:45 admin_media -> /root/django_src/django/contrib/admin/media -rw-r--r-- 1 root root 177 2012-07-11 17:50 index.html lrwxrwxrwx 1 root root 14 2012-07-11 20:42 media -> /hdd/web/media lrwxrwxrwx 1 root root 18 2012-07-12 10:55 wordpress -> /hdd/web/wordpress Here is the result of using chown -R www-data:www-data /var/www total 12 drwxr-xr-x 2 www-data www-data 4096 2012-07-12 10:55 . drwxr-xr-x 13 root root 4096 2012-07-11 20:02 .. lrwxrwxrwx 1 www-data www-data 43 2012-07-11 20:45 admin_media -> /root/django_src/django/contrib/admin/media -rw-r--r-- 1 www-data www-data 177 2012-07-11 17:50 index.html lrwxrwxrwx 1 www-data www-data 14 2012-07-11 20:42 media -> /hdd/web/media lrwxrwxrwx 1 www-data www-data 18 2012-07-12 10:55 wordpress -> /hdd/web/wordpress I am still unable to access via browser...

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• Usage of Pirated software at a company

  - by hakesh

  Hi, I am redirected from stack over flow since the topic is ethics rather than about programming. Thank you for letting me know that. and please give me advices. So, I started to work at a company as an engineer a couple of months ago. It's a small company and what they basically do is answering service on phones. Now they are switching from normal phones to IP phones so that computers take more important place in the work. However, all the computers used by workers are equipped with pirated software ,even their operating systems are. Moreover, they don't even buy one license to make copies for other computers. In other words, they do not spend any money for the software in office. I am not saying copying a licensed one is legit, but the situation is too much. There is one guy who did installing those pirated soft. He does not feel any sense of guilt and even justified when I asked about it. and he is not even a specialist. He just searched on the internet to install pirated software. Our boss does not have any knowledge of computers, so he took cheaper way. How do you guys think about this? Since I am still new to the company, I am not doing maintenance or managing on those cracked computers. But I have to use those software daily. And later on I will be doing support, help desk kind of staff. I really don't want to take responsibility for operating pirated software. and from an aspect of developer and engineer, pirated software are not able to get legal support and it may work unexpectedly. So, I am thinking about changing job. Am I thinking too much? should I wait until I have more credit from the boss and try to change his policy? So far, the boss does not take any words from me. Any opinions are welcome. Thank you

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• How to run WordPress and Java web app running on Tomcat on the same server?

  - by Chantz

  I have to run a WordPress site served via Apache2 & Java-based webapp using Tomcat on the same server. When users come to example.com or example.com/public-pages they need to served from WordPress but when they come to example.com/private-pages they need to be served from the Tomcat. I have asked this question on serverfault where they suggested using different port, different IP & sub-domain. I want to go for different port solution since it will mean I need to buy only one SSL certificate. I tried doing the reverse proxy method by having the following in my default-ssl.conf <VirtualHost _default_:443> ServerAdmin webmaster@localhost ServerName localhost:443 DocumentRoot /var/www <Directory /var/www> #For Wordpress Options FollowSymLinks AllowOverride All </Directory> <Proxy *> Order deny,allow Allow from all </Proxy> ProxyRequests Off ProxyPass /private-pages ajp://localhost:8009/ ProxyPassReverse /private-pages ajp://localhost:8009/ SSLEngine on SSLProxyEngine On SSLCertificateFile /etc/apache2/ssl/apache.crt SSLCertificateKeyFile /etc/apache2/ssl/apache.key </VirtualHost> As you have noticed I am using mod_proxy_ajp in Apache2 for this. And that my Tomcat is listening to port 8009 and then serving content. So now when I go to example.com/private-pages I am seeing the content from my Tomcat. But 2 issues are happening. All my static resources are getting 404-ed, so none of my images, CSS, js are getting loaded. I see that the browser is requesting for the resources using URL example.com/css/* This will clearly not work because it translates to example.com:80/css/* instead of example.com:8009/css/* & there are no such resources in the WordPress directory. If I go to example.com/private-pages/abcd I am somehow kicked to the WordPress site (which obviously displays a 404 page). I can understand why #1 is happening but have no clue why the #2 is happening. Regardless, if there is another clean solution for resolving this, I would appreciate y'alls help.

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• ???????Java EE??????WebLogic Server 12c??????3???????Oracle WebLogic Server 12c Forum?????|WebLogic Channel|??????

  - by ???02

  ???????2012?2?7??Java EE??????????·???????Oracle WebLogic Server 12c?????????????????????1?25????????????Oracle WebLogic Server 12c Forum - ????????Java??????????? -????Java EE 6?Java SE 7???????Java???????WebLogic Server 12c?????????????????·?????????????????????3??????????????????????(???)?Java EE 6?Java SE 7??????200????????????WebLogic Server 12c　???????????Oracle Corporation?WebLogic Server???????Fusion Middleware?????????·??????????????·???????????·????????????????????·???????????/????????Oracle Fusion Middleware??????WebLogic Server??????????????????????　?Fusion Middleware?????WebLogic Server?Coherence?Tuxedo??????????·??????????????????????????????????????????????Traffic Director?Virtual Assembly Builder???????Cloud Application Foundation??????????Cloud Application Foundation??Fusion Middleware?Fusion Application??????·???????????·????????????????????(?????)　?????????????1???????????WebLogic Server 12c??Java EE 6?Java SE 7???????Java?????????????????????????????????????200??????????????????　???????????????????????Java EE 6??????????????????????????????????????????????????????????????????????????5??????　????????·??????????????????Java EE 6?Java SE 7?????????????????????????????????????Oracle Real Application Clusters(RAC)?????????????????????????????????????????????????????????????　????????????????SPECjEnterprise2010????????????????????????????????????????????·????(Engineered Systems)?????????Oracle Exalogic Elastic Cloud????????????????????????　???????????????????????????????Oracle Enterprise Manager Cloud Control 12c???????????????????????·??????????????????????????????????????????????????????????　????WebLogic Server????????GlassFish?????????????????JBoss?WebSphere?????????/???????????·?????WebLogic Server 12c????????????????????????????·????????????　???????IDC?????????????WebLogic Server????????????????????????????????????????????????????????·???????????????????WebLogic Server 12c??????????????????·??????????????????????WebLogic Server 12c???????????????????????????(?????)¦????????????! ??????????????????WebLogic Server 12c??????WebLogic Server 12c??????3?????　???????????????????????Fusion Middleware???????????????????????????????WebLogic Server 12c??????3???????????????????????WebLogic Server 12c???????????????WebLogic Server 12c???????1――???Java?????????????　????WebLogic Server 12c???????????Java EE 6?Java SE 7????????????????????????????????Java EE??????????????????????????????????????Java EE????????????????????????????Java EE?????????????1??????????????????????????????????????????????????(???????·?????????????????)?????????????????????????????????????????　?Java EE 6????Java EE?????????1???????????Java?????????????????????????????????????????????????????????·??????(OSS)???????????????????????????????????????Java EE 6?Java SE 7??????Java???????????????????????????????????????????????????(???) ???????????????????????Fusion Middleware???????????????????????????????WebLogic Server 12c??????3???????????????????????WebLogic Server 12c???????????????WebLogic Server 12c???????1?????Java????????????? ????WebLogic Server 12c???????????Java EE 6?Java SE 7????????????????????????????????Java EE??????????????????????????????????????Java EE????????????????????????????Java EE?????????????1??????????????????????????????????????????????????(???????·?????????????????)????????????????????????????????????????? ?Java EE 6????Java EE?????????1???????????Java?????????????????????????????????????????????????????????·??????(OSS)???????????????????????????????????????Java EE 6?Java SE 7??????Java???????????????????????????????????????????????????(???)--WebLogic Server 12c???????2:??????????????????(??????????????????)　???WebLogic Server 12c?????2????????????????????????????????????1????????????????OSS??????????????????????????OSS????????????????????????????????????????????????????????????????????????????????????????????OSS?????????????????????????????????????????????????????????????? "???"????????????????　???WebLogic Server 12c?????Java EE 6???JavaServer Faces 2.1?Java Servlet 3.0?EJB 3.1?Java Persistence API 2.0????????????Java EE??????????????????????????????????????????????OSS?????????????????????????????????????????????????????????????????????????Java EE??????????????????????????????·???·?????????????/??????????????????????????????????????????????????????????????????¦?????WebLogic & Java EE???????????　?????????????Java EE?????????????WebLogic Server 12c???????3:?????·???????????????　3?????????????·?????????????????????????????????Oracle RAC????????????Active GridLink for RAC???????WebLogic Server????????1?????????　Active GridLink for RAC ??WebLogic Server???????????WebLogic Suite???????1????WebLogic Server 12c???Web?????·???????????????????????????????HTTP?????????????Oracle RAC?1?????????????????????????·?????????????????????????????????????Oracle RAC??????????????????????Web?????·????????????????????3??1??????????????　???Active GridLink for RAC??????????????????????????????????????????????TCP/IP??????????????????????????·??????????????????????????????????????????????????Oracle RAC????????????????????????????????????????????????????????????·????????????????????????????????????????????????¦????WebLogic?RAC????????????――Active GridLink for RAC????RAC???????????????????????????????????????4????　????????·??????(GC)?????????????????????????????JRockit Real Time?????????????????????????????????????????????????JRockit Flight Recorder????2??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????·??????·????????????????????WebLogic Server?????????????12c??????????????　?Oracle Database????????GC????????????????????????????????????????????·????????????????????WebLogic Server????????????????12c?????????????????????????????????????????????????????????????????????????·?????????????????????????????????????????????????WebLogic Server 12c???????????(???)¦??????????????????????????WebLogic Server????????·??????????――?????·??????·???????????WebLogic??????????????????????????TCO?――????????????????WebLogic???????　???????????????????Cloud Application Foundation???????????WebLogic Server 12c???????????????????????????????????????????????????????????????????????????????????????·??????·????????????????????????????????????????????????????????WebLogic Server 12c??????????????????????????¦WebLogic Server 12c??????·???Oracle Fusion Middleware 11g ??????·??????Oracle OpenWorld Tokyo 2012??????ENGINEERED FOR INNOVATION ??????????????????????????????????????????????????????????????????????????????????WebLogic Server???????????????????????![???????????:4324]??:2012?4?4?(?)~6?(?)??:???? ????? ??????????????49????????????:????Oracle OpenWorld Tokyo 2012???? ~??????~(PDF)Oracle OpenWorld Tokyo 2012????????2?(?????)???

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• How to model a relationship that NHibernate (or Hibernate) doesn’t easily support

  - by MylesRip

  I have a situation in which the ideal relationship, I believe, would involve Value Object Inheritance. This is unfortunately not supported in NHibernate so any solution I come up with will be less than perfect. Let’s say that: “Item” entities have a “Location” that can be in one of multiple different formats. These formats are completely different with no overlapping fields. We will deal with each Location in the format that is provided in the data with no attempt to convert from one format to another. Each Item has exactly one Location. “SpecialItem” is a subtype of Item, however, that is unique in that it has exactly two Locations. “Group” entities aggregate Items. “LocationGroup” is as subtype of Group. LocationGroup also has a single Location that can be in any of the formats as described above. Although I’m interested in Items by Group, I’m also interested in being able to find all items with the same Location, regardless of which group they are in. I apologize for the number of stipulations listed above, but I’m afraid that simplifying it any further wouldn’t really reflect the difficulties of the situation. Here is how the above could be diagrammed: Mapping Dilemma Diagram: (http://www.freeimagehosting.net/uploads/592ad48b1a.jpg) (I tried placing the diagram inline, but Stack Overflow won't allow that until I have accumulated more points. I understand the reasoning behind it, but it is a bit inconvenient for now.) Hmmm... Apparently I can't have multiple links either. :-( Analyzing the above, I make the following observations: I treat Locations polymorphically, referring to the supertype rather than the subtype. Logically, Locations should be “Value Objects” rather than entities since it is meaningless to differentiate between two Location objects that have all the same values. Thus equality between Locations should be based on field comparisons, not identifiers. Also, value objects should be immutable and shared references should not be allowed. Using NHibernate (or Hibernate) one would typically map value objects using the “component” keyword which would cause the fields of the class to be mapped directly into the database table that represents the containing class. Put another way, there would not be a separate “Locations” table in the database (and Locations would therefore have no identifiers). NHibernate (or Hibernate) do not currently support inheritance for value objects. My choices as I see them are: Ignore the fact that Locations should be value objects and map them as entities. This would take care of the inheritance mapping issues since NHibernate supports entity inheritance. The downside is that I then have to deal with aliasing issues. (Meaning that if multiple objects share a reference to the same Location, then changing values for one object’s Location would cause the location to change for other objects that share the reference the same Location record.) I want to avoid this if possible. Another downside is that entities are typically compared by their IDs. This would mean that two Location objects would be considered not equal even if the values of all their fields are the same. This would be invalid and unacceptable from the business perspective. Flatten Locations into a single class so that there are no longer inheritance relationships for Locations. This would allow Locations to be treated as value objects which could easily be handled by using “component” mapping in NHibernate. The downside in this case would be that the domain model becomes weaker, more fragile and less maintainable. Do some “creative” mapping in the hbm files in order to force Location fields to be mapped into the containing entities’ tables without using the “component” keyword. This approach is described by Colin Jack here. My situation is more complicated than the one he describes due to the fact that SpecialItem has a second Location and the fact that a different entity, LocatedGroup, also has Locations. I could probably get it to work, but the mappings would be non-intuitive and therefore hard to understand and maintain by other developers in the future. Also, I suspect that these tricky mappings would likely not be possible using Fluent NHibernate so I would use the advantages of using that tool, at least in that situation. Surely others out there have run into similar situations. I’m hoping someone who has “been there, done that” can share some wisdom. :-) So here’s the question… Which approach should be preferred in this situation? Why?

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• PXE boot linux. PXE-E51: No DHCP or proxyDHCP offers were received

  - by athspk

  I am trying to have an ubuntu box (192.168.10.9) acting as a PXE server, but i have trouble getting DHCP to work. The PXE server is connected to a SOHO router (192.168.10.1) acting as a switch. I have disabled the DHCP server on the router. $ dhcpd --version isc-dhcpd-4.2.4 The contents of /etc/dhcp/dhcpd.conf ddns-update-style none; option domain-name-servers 192.168.10.1; default-lease-time 3600; max-lease-time 7200; authoritative; log-facility local7; allow booting; allow bootp; subnet 192.168.10.0 netmask 255.255.255.0 { range dynamic-bootp 192.168.10.101 192.168.10.200; option routers 192.168.10.1; option broadcast-address 192.168.10.255; next-server 192.168.10.9; filename "/tftpboot/pxelinux.0"; } The contents of /etc/default/isc-dhcp-server INTERFACES="eth0" When the client boots, it tries to get an IP address from the server but fails with the following Error message: PXE-E51: No DHCP or proxyDHCP offers were received. On Server side, i was tailing /var/log/syslog while the client tries to boot: Dec 4 12:57:10 athspk-Dell dhcpd: DHCPDISCOVER from 00:1f:d0:8e:6b:db via eth0 Dec 4 12:57:11 athspk-Dell dhcpd: DHCPOFFER on 192.168.10.101 to 00:1f:d0:8e:6b:db via eth0 Dec 4 12:57:12 athspk-Dell dhcpd: DHCPDISCOVER from 00:1f:d0:8e:6b:db via eth0 Dec 4 12:57:12 athspk-Dell dhcpd: DHCPOFFER on 192.168.10.101 to 00:1f:d0:8e:6b:db via eth0 Dec 4 12:57:17 athspk-Dell dhcpd: DHCPDISCOVER from 00:1f:d0:8e:6b:db via eth0 Dec 4 12:57:17 athspk-Dell dhcpd: DHCPOFFER on 192.168.10.101 to 00:1f:d0:8e:6b:db via eth0 Dec 4 12:57:25 athspk-Dell dhcpd: DHCPDISCOVER from 00:1f:d0:8e:6b:db via eth0 Dec 4 12:57:25 athspk-Dell dhcpd: DHCPOFFER on 192.168.10.101 to 00:1f:d0:8e:6b:db via eth0 Please advise. Thanks in advance

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• FTP through HAProxy

  - by Menda

  I have a machine, which is the Host and has HAProxy installed in it and working. Then I have a Guest KVM virtual machine running inside the Host with an IP 192.168.122.152. I installed an FTP server in the Guest machine with VSFTPD. From the Host, if I try the command $ ftp -p 192.168.122.152, works perfectly and I can connect to the Guest FTP. I need to remark that this FTP is configured as passive, but both passive and active connections are working from the Host. This is an extract of part of /etc/vsftpd.conf in the Guest: # Passive mode connect_from_port_20=NO tcp_wrappers=YES listen_address=192.168.122.152 pasv_enable=YES pasv_promiscuous=NO port_enable=YES port_promiscuous=NO pasv_max_port=10000 pasv_min_port=10250 Now it's time to make it accessible from outside, so I configure /etc/haproxy/haproxy.cfg like this: listen FTP_Default *:21 server ftp01 192.168.122.152 check port 21 inter 10s rise 1 fall 2 listen FTP_Range *:10000-10250 server ftp01 192.168.122.152 check port 21 inter 10s rise 1 fall 2 But if I try to connect from other machine in internet $ ftp -p $PUBLICIP, it only responds: Connected to <PUBLICIP>, but it doesn't ask for the login and password. Something in the HAProxy config must be wrong, because it's the only point where it fails. By the way, I tried to adapt my configuration to this one in this blog. Thanks.

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• Hyper-V Virtual Ethernet Adapter not working probperly - Code 31 on Host

  - by Chris S

  I have a Windows 8.1 machine with Hyper-V installed. From a "clean" Hyper-V configuration I open Virtual Switch Manager, create an External switch with "Allow management operating system to share this network adapter", click OK. Everything seems to work properly but the host loses network connectivity. Opening Device Manager, the "Hyper-V Virtual Ethernet Adapter" is shown under the Network Adapter section with a yellow triangle, and the following message: This device is not working properly because Windows cannot load the drivers required for this device. (Code 31) An object ID was not found in the file. I tried "Uninstalling" the device, seems to work, but the device doesn't actually remove. I tried removing and re-adding the Hyper-V feature completely, no difference. Tried scf /scannow, no problems. System and Application logs show no errors. The Hyper-V-VMMS Networking log shows the following: Log Name: Microsoft-Windows-Hyper-V-VMMS-Networking Source: Microsoft-Windows-Hyper-V-VMMS Date: 10/24/2013 10:53:07 AM Event ID: 26088 Description: Failed to apply static IP settings to internal Ethernet adapter {A813DE9A-BE70-4FAE-AD31-BE4D54505A4B} ('885435B8-BE65-4EE9-826D-AB56035237ED'): Unspecified error (0x80004005). If I try to remove the Virtual Switch in Hyper-V Virtual Switch Manager I get this in that same log: Log Name: Microsoft-Windows-Hyper-V-VMMS-Networking Source: Microsoft-Windows-Hyper-V-VMMS Date: 10/24/2013 11:19:47 AM Event ID: 26142 Description: Failed while removing virtual Ethernet switch. Trying to remove the Virtual Switch leads to an error: Error applying Virtual Switch Properties changes Failed while removing virtual Ethernet switch. VM Networking does work.

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• Unable to install SQL 2008 on Windows 7

  - by Axel

  SQL 2008 install hangs on Windows 7 The story: Trying to install SQL2008 on Windows 7 hangs on SqlEngineDBStartconfigAction_install_configrc_Cpu32. What I Tried: Uninstall hangs on validation Manual uninstall using msiinv.exe and msiexec /x works Added SQL service accounts to local admins no help Turn of UAC no help Last lines in setup log: 2010-04-01 16:18:05 SQLEngine: : Checking Engine checkpoint 'GetSqlServerProcessHandle' 2010-04-01 16:18:05 SQLEngine: --SqlServerServiceSCM: Waiting for nt event 'Global\sqlserverRecComplete' to be created 2010-04-01 16:18:07 SQLEngine: --SqlServerServiceSCM: Waiting for nt event 'Global\sqlserverRecComplete' or sql process handle to be signaled 2010-04-01 16:18:07 SQLEngine: : Checking Engine checkpoint 'WaitSqlServerStartEvents' 2010-04-01 16:18:53 Slp: Sco: Attempting to initialize script 2010-04-01 16:18:53 Slp: Sco: Attempting to initialize default connection string 2010-04-01 16:18:53 Slp: Sco: Attempting to set script connection protocol to NotSpecified 2010-04-01 16:18:53 Slp: Sco: Attempting to set script connection protocol to NamedPipes 2010-04-01 16:18:53 SQLEngine: --SqlDatabaseServiceConfig: Connection String: Data Source=\\.\pipe\SQLLocal\MSSQLSERVER;Initial Catalog=master;Integrated Security=True;Pooling=False;Network Library=dbnmpntw;Application Name=SqlSetup 2010-04-01 16:18:53 SQLEngine: : Checking Engine checkpoint 'ServiceConfigConnect' 2010-04-01 16:18:53 SQLEngine: --SqlDatabaseServiceConfig: Connecting to SQL.... 2010-04-01 16:18:53 Slp: Sco: Attempting to connect script 2010-04-01 16:18:53 Slp: Connection string: Data Source=\\.\pipe\SQLLocal\MSSQLSERVER;Initial Catalog=master;Integrated Security=True;Pooling=False;Network Library=dbnmpntw;Application Name=SqlSetup And now comes the fun part: When I open conf mgr I can see the service running, I enabled named pipes and TCP/IP, restarted the service I'm able to connect to the server using an OLE DB connection but not with the Native Client. And what I find suspicious is the following error in my app log: .NET Runtime Optimization Service (clr_optimization_v2.0.50727_32) - Failed to compile: C:\Program Files\Microsoft SQL Server\100\Tools\Binn\VSShell\Common7\Tools\VDT\DataProjects.dll . Error code = 0x8007000b In MS connect this is reported as a bug but MS is unable to reproduce the problem altough when you search the fora I'm not the only one with this problem. So any help is appreciated.

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• IIS6: Web Site presenting the wrong SSL certificate

  - by pcampbell

  Consider an IIS6 installation with multiple Web Sites. Each is intended to be a different subdomain with its own cert (not a wildcard cert). Each has their host-header specified properly. foo.example.com - port 443. Require SSL w/128 bit. Working properly! It presents its SSL cert properly to the browser. Configured for a specific IP address. bar.example.com - port 443. Require SSL w/128 bit. Configured for all unassigned addresses. When inspecting the IIS property page, it fully shows the cert for bar.example.com on the View Certificate button. This is a NEW web site that is having cert problems. It's presenting the cert for foo.example.com. Ouch! Question: can you have more than one subdomains both running on separate websites with SSL certs on the same port (443)? How would you configure 2 web sites on the same range of 'all unassigned' for the same port (443) ? Update: ignoring the cert error, when browsing to https://bar, the content served is from https://foo site. When NOT using SSL, browsing to http://bar serves the correct content from bar. Just one address is assigned to this DMZ server.

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• Access to message queuing system is denied MSMQ?

  - by user1401694

  My problem is a little confusing. I have 2 servers (Windows Server 2008 R2) with MSMQ installed and I want to use Server B to consume a MessageQueue on Server A. When I try to Receive it always throws a message error: "Access to message queuing system is denied.". IP between them. Server A: 172.31.23.130 Server B: 172.31.23.195 FormatName:Direct=TCP:172.31.23.195\private$\queuesource (It's working for Sends) I can ping each server from the other; The firewall is disabled; The "queuesource" has Full Control to "Everyone", "Anonymous Logon", "Network", "Network Services"; Journal is disabled; Authentication is ok; The queue is Transactional. My code in .Net C# is basically like this: MessageQueue _sourceQueue = new MessageQueue(); _sourceQueue.Path = "FormatName:Direct=TCP:172.31.23.195\private$\queuesource"; _sourceQueue.Receive(); // << here throw an exception. Actually I'm using the Private Queue only to avoid Active Directory's problems. For example, if the server DNS fail all network fail. I don't know what do anymore.

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• Outlook 2007 unable to connect to exchange server

  - by mattwarren

  I came into the office a week ago and outlook has refused to connect ever since, it just says "Disconnected" in the bottom right-hand corner. I've tried restarting it, rebooting Windows etc. I'm the only one if our office who is having this problem, so it's not a general problem with the server. Things I've tried Pinging the server via IP address and host name, both work fine Connecting via OWA, this works using the same machine name Connecting to Exchange via HTTP ("Outlook Anywhere") doesn't work None of the suggestions in this question helped, http://serverfault.com/questions/21755/can-ping-exchange-server-cant-connect-outlook-to-it Disabling Windows firewall on my laptop also has no effect. There are no items in the event viewer that indicate that anything it up. Also no permissions have changed on the server since when it worked. Update: I've just tried logging onto a completely different PC, using my domain controller user-name/password. When I setup outlook on there it also fails, so the problem isn't specific to 1 pc/outlook it's something about my particular user name, but not when using OWA? What else can I do to diagnose this, any suggestions?

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• Windows 7 intermittently drops wired internet/lan connection.

  - by CraigTP

  In a nutshell, my Windows 7 Ultimate PC intermittently drops it's internet connection. Why? Background: My PC is wired to my ADSL modem/router which is directly connected to the phone line. I also have wireless connectivity turned on within the router for a laptop to connect wirelessly. Every few hours or so, when using my PC, I find I cannot access the internet and pages will not load. Eventually, Windows7 will update the network icon in the task-tray to show the exclamation mark symbol on the network icon. Opening up the Network And Sharing Centre will show the red cross between the "Multiple Networks" and "The Internet". Here's a picture of the "Network And Sharing Centre" (grabbed when everything was working!) As you can see, I'm running Sun's VirtualBox on this machine and that creates a Network connection for itself. This doesn't seem to affect the intermittent dropping (i.e. the intermittent drops occur whether the VirtualBox connection is in use or not). When the connection does drop, I cannot access any internet pages, nor can I access the router's web admin page at http://192.168.1.1/, so I'm assuming I've lost all local LAN access too. It's definitely not the router (or the internet connection itself) as my laptop, using the wireless connection (and running Vista Home Premium) continues to be able to access the internet (and the router's web admin pages) just fine. Every time this happens, I can immediately restore all internet and LAN access by opening Network Adapter page, disabling the "Local Area Connection" and then re-enabling it. Give it a few seconds and everything is fine again. I assume this is because, beneath the GUI, it's effectively doing an "ipconfig /release" then "ipconfig /renew". Why does this happen in the first place, though? I've googled for this and seen quite a few other people (even on MSDN/Technet forums) experiencing the same or almost the same problem, but with no clear resolution. Suggestions of turning off IPv6 on the LAN adapter, and ensuring there's no power management "sleeping" the network adapter have been tried but do not cure the problem. There does not seem to be any particular sequence of events that cause it to happen either. I've had it go twice in 20 minutes when just randomly browsing the web with no other traffic, and I've also had it go once then not go again for 2-3 hours with the same sort of usage. Can anyone tell me why this is happening and how to make it stop? EDIT: Additional information based upon the answer provided so far: Firstly, I forgot the mention that this is Windows 7 64 bit if that makes any difference at all. I mentioned that I don't think the VirtualBox network adpater is causing this problem in any way, and I also have VirtualBox installed on two other machines, one running Vista Home Premium and the other running XP. Neither of these machine experience the same network connectivity issues as the Windows 7 machine. The IP assignment for the Windows 7 machine is the same both before and after the "drop". I have a DHCP server on the router issuing IP Addresses, however my Windows 7 machine uses a static address. Here's the output from "ipconfig": Ethernet adapter Local Area Connection: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes IPv4 Address. . . . . . . . . . . : 192.168.1.2(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : 192.168.1.1 DNS Servers . . . . . . . . . . . : 192.168.1.1 NetBIOS over Tcpip. . . . . . . . : Enabled Within the system's event logs, the only event that relates to the connection dropping is a "DNS Client Event" and this is generated after the connection has dropped and is an event detailing that DNS information can't be found for whatever website I may be trying to access, just as the connection drops: Log Name: System Source: Microsoft-Windows-DNS-Client Event ID: 1014 Task Category: None Level: Warning Keywords: User: NETWORK SERVICE Description: Name resolution for the name weather.service.msn.com timed out after none of the configured DNS servers responded. The network adapter chipset is Realtek PCIe GBE Family Controller and I have confirmed that this is the correct chipset for the motherboard (Asus M4A77TD PRO), and in fact, Windows Update installed an updated driver for this on 12/Jan/2009. The details of the update say that it's a Realtek software update from December 2009. Incidentally, I was still having the same intermittent problems prior to this update. It seems to have made no difference at all. EDIT 2 (1 Feb 2010): In my quest to solve this problem, I have discovered some more interesting information. On another forum, someone suggested that I should try running Windows in "Safe Mode With Networking" and see if the problem continues to occur. This was a fantastic suggestion and I don't know why I didn't think of it sooner myself. So, I proceeded to run in Safe Mode with Networking for a number of hours, and amazingly, the "drops" didn't occur once. It was a positive discovery, however, due to the intermittent nature of the original problem, I wasn't completely convinced that the problem was cured. One thing I did note is that the fan on my GFX card was running alot louder than normal. This is due to the fact that I have an ASUS ENGTS250 graphics card (http://www.asus.com/product.aspx?P_ID=B6imcoax3MRY42f3) which had a known problem with a noisy fan until a BIOS update fixed the issue. (See the "Manufacturer Response" here: http://www.newegg.com/Product/Product.aspx?Item=N82E16814121334 for details). Well, running in safe mode had the fan running (incorrectly) at full speed (as it did before the BIOS update), but with an (apparently) stable network connection. Obviously some driver was not loaded for the GFX card when in Safe Mode so this got me thinking about the GFX card (since the very noisy fan was quite obvious when running in Safe Mode). I rebooted into normal mode, and found that Nvidia had a very up-to-date new driver for my GFX card (only about 1 week old), so I downloaded the appropriate driver and installed it. After installation and a reboot, I was able to use my PC for an entire day with NO NETWORK DROPS!!! This was on Saturday. However, on the Sunday, I also had my PC for pretty much the entire day and experienced 2 network drops. No other changes have been made to my PC in this time. So, the story seems to be that updating my graphics card drivers seems to have improved (if not completely fixed) the issue, however, I'm still searching for a proper fix for this problem. Hopefully, this information may help anyone who may have additional ideas as to why this problem is occuring in the first place. (And why does new GFX card drivers have anything to do with the network?) I appreciate everyone's feedback so far. However, I'll have to ask once more if anyone has any further ideas of how to fix this particular problem? Thanks in advance.

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• Configuring VirtualBox host only networking: OSX host, Ubuntu guest

  - by Greg K

  I have a Ubuntu guest configured with two interfaces, eth0 is using NAT and works fine, I can access the net. The second interface eth1 is set to host only networking and VirtualBox has created a vboxnet0 virtual adapter on the host. I've configured vboxnet0 in VirtualBox adapter settings with the following: ip 192.168.21.20 subnet 255.255.255.0 Once the VM guest is running, ifconfig on OSX has vboxnet0 setup as: vboxnet0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500 ether 0a:00:27:00:00:00 inet 192.168.21.20 netmask 0xffffff00 broadcast 192.168.21.255 In the guest, eth0 is set to use DHCP, I've statically assigned eth1 to 192.168.21.20 (is this a mistake?): auto eth1 iface eth1 inet static address 192.168.21.20 netmask 255.255.255.0 network 192.168.21.0 broadcast 192.168.21.255 gateway 192.168.21.1 There is no device on 192.168.21.1 - what should I set my gateway to? In the guest the routes look like so: Destination Gateway Genmask Flags Metric Ref Use Iface 192.168.21.0 * 255.255.255.0 U 0 0 0 eth1 10.0.2.0 * 255.255.255.0 U 0 0 0 eth0 default 10.0.2.2 0.0.0.0 UG 100 0 0 eth0 default 192.168.21.1 0.0.0.0 UG 100 0 0 eth1 Route table on OSX: $ netstat -nr Routing tables Internet: Destination Gateway Flags Refs Use Netif Expire default 10.77.36.1 UGSc 28 0 en1 10.77.36/22 link#5 UCS 5 0 en1 10.77.39.38 127.0.0.1 UHS 1 2236 lo0 10.77.39.255 link#5 UHLWbI 1 66 en1 127 127.0.0.1 UCS 0 0 lo0 127.0.0.1 127.0.0.1 UH 1 8642 lo0 169.254 link#5 UCS 0 0 en1 192.168.21 link#7 UC 2 0 vboxnet 192.168.21.20 a:0:27:0:0:0 UHLWI 0 4 lo0 192.168.21.255 link#7 UHLWbI 2 64 vboxnet I can't SSH from the host to the guest (I used to be able to when the VM was configured with a bridged connection): $ ssh 192.168.21.20 ssh: connect to host 192.168.21.20 port 22: Connection refused What have I done wrong here? TIA

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• vCenter appliance won't use mail relay server

  - by Safado

  tl;dr: - sendmail is configured to use a relay server but still insists on using 127.0.01 as the relay, which results in mail not being sent. We have the open source vCenter appliance (v 5.0) managing our ESXi cluster. When connected to it via vSphere Client, you can configure the SMTP relay server to use by going to Administration > vCenter Server Settings > MAIL. There you can set the SMTP Server value. I looked through their documentation and also confirmed on the phone with support that all you have to do to configure mail is to put in the relay IP or fqdn in that box and hit OK. Well, I had done that and mail still wasn't sending. So I SSH into the server (which is SuSE) and look at /var/log/mail and it looks like it's trying to relay the email through 127.0.0.1 and it's rejecting it. So looking through the config files, I see there's /etc/sendmail.cf and /etc/mail/submit.cf. You can configure items in /etc/sysconfig/sendmail and run SuSEconfig --module sendmail to generate those to .cf files based on what's in /etc/sysconfig/sendmail. So playing around, I see that when you set the SMTP Server value in the vCenter gui, all that it does is change the "DS" line in /etc/mail/submit.cf to have DS[myrelayserver.com]. Looking on the internet, it would appear that the DS line is really the only thing you need to change in order to use a relay server. I got on the phone with VMWare support and spent 2 hours trying to modify ANY setting that had anything to do with relays and we couldn't get it to NOT use 127.0.0.1 as the relay. Just to note, any time we made any sort of configuration change, we restarted the sendmail service. Does anyone know whats going on? Have any ideas on how I can fix this?

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• Configuring default gateway returned by dhcp server

  - by comp1mp

  Hello, I have a machine which connects via ethernet to a private LAN, and wireless to a network which provides internet connectivity. The private LAN uses a wireless router to perform DHCP. The problem is that the wireless and NIC adapters have different default gateways. The default gateway for the private LAN has a lower adapter metric, and is thus chosen by the routing algorithm. I am thus unable to browse the internet when connected to both adapters. The following link has a solution for manually setting the adapter metric to a high number. http://superuser.com/questions/77822/how-to-tell-windows-7-to-ignore-a-default-gateway I was hoping to find a different solution. Does any one know of a router that allows you to configure its DHCP server to return an empty default gateway? I cannot find such an option for my linksys wrt300n. Configuring a static ip address with no default gateway does work, however I would like to use DHCP if possible. Does anyone know of a different way to specify a default gateway for a windows 7 machine with multiple network adapters without mucking with the adapter metric? Thanks, Matthew

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• James - mail server configuration help needed

  - by Chaitanya

  Hi, I am trying to setup James mail server on a linux machine. The linux machine has public static ip address assigned. I installed James and added in the config.xml added the servername as mydomain.com. In the DNS for mydomain.com, I have created a A-record, say mx.mydomain.com, which corresponds to the ipaddress of the above mail server machine. Then added mx.mydomain.com as MX record for mydomain.com. In James, I have created a new user test. Then from gmail, I sent a mail to [email protected]. The mail is not received back and it didn't even bounce back. The linux machine is behind a firewall with only 22, 80, 8080 ports open for external network. My question here is, Do I require do open any other ports on the firewall so that the mail I send from gmail arrives to James? If it's not the port problem, any views on solving this issue? I don't want to send mails from this server. It's only for receiving the mails.

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• Can't Access TFS 2010 Beta 2 from Visual Studio 2010 Beta 2 when domain joined

  - by Brian Sullivan

  I'm experimenting with an installation of TFS 2010 Beta 2 on a virtual machine under VirtualBox running Windows Server 2008. When I've got the server in a workgroup, I can connect to it from Visual Studio just fine, as long as I provide credentials for a local user on the server machine when prompted by the "Connect to Team Foundation Server" dialog. The desktop I'm running Visual Studio on is joined to a domain. However, when I join the server to the domain, I can no longer connect to it from Visual Studio. I get a pretty generic error message: "TF31002 - Unable to connect to team foundation server". It gives me several different possible problems, including an incorrect address or an incorrect username and password. I've already added the domain Windows identity with which I'm logged on the the desktop to the TFS Admins group on the server, so I don't think it's a username/password problem. I've also tried putting the literal IP address of the server in the dialog address box instead of the machine name, but still no dice. I made sure that network discovery was enabled on the server, too, and can navigate to "\\webserver2008" in Windows Explorer without any problems. Shouldn't be a firewall problem, since the TFS install creates the appropriate exceptions in Windows Firewall. It's all a bit confusing, since it seems to work when the server is in a workgroup. Note: I'm a dev, not an admin, so there are many subtleties of server administration with which I'm not familiar. Please make no assumptions about what I may or may not have tried; what may be obvious to you may have never occurred to me. Thanks in advance!

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• NetApp FAS 2040 LDAP Win2k8R2

  - by it_stuck

  I am trying to get my FAS2040 to action user lookups using LDAP, below is the filer configuration options: filer> options ldap ldap.ADdomain dc1.colour.domain.local ldap.base OU=Users,OU=something1,OU=something2,OU=darkside,DC=colour,DC=domain,DC=local ldap.base.group ldap.base.netgroup ldap.base.passwd ldap.enable on ldap.minimum_bind_level anonymous ldap.name domain-admin-account ldap.nssmap.attribute.gecos gecos ldap.nssmap.attribute.gidNumber gidNumber ldap.nssmap.attribute.groupname cn ldap.nssmap.attribute.homeDirectory homeDirectory ldap.nssmap.attribute.loginShell loginShell ldap.nssmap.attribute.memberNisNetgroup memberNisNetgroup ldap.nssmap.attribute.memberUid memberUid ldap.nssmap.attribute.netgroupname cn ldap.nssmap.attribute.nisNetgroupTriple nisNetgroupTriple ldap.nssmap.attribute.uid uid ldap.nssmap.attribute.uidNumber uidNumber ldap.nssmap.attribute.userPassword userPassword ldap.nssmap.objectClass.nisNetgroup nisNetgroup ldap.nssmap.objectClass.posixAccount posixAccount ldap.nssmap.objectClass.posixGroup posixGroup ldap.passwd ****** ldap.port 389 ldap.servers ldap.servers.preferred ldap.ssl.enable off ldap.timeout 20 ldap.usermap.attribute.unixaccount unixaccount ldap.usermap.attribute.windowsaccount sAMAccountName ldap.usermap.base ldap.usermap.enable on output of nsswitch.conf: hosts: files dns passwd: ldap files netgroup: ldap files group: ldap files shadow: files nis Error Message(s): [filer: auth.ldap.trace.LDAPConnection.statusMsg:info]: AUTH: TraceLDAPServer- Starting AD LDAP server address discovery for dc1.colour.domain.LOCAL. [filer: auth.ldap.trace.LDAPConnection.statusMsg:info]: AUTH: TraceLDAPServer- Found no AD LDAP server addresses using DNS site query (site). [filer: auth.ldap.trace.LDAPConnection.statusMsg:info]: AUTH: TraceLDAPServer- Found no AD LDAP server addresses using generic DNS query. Could not get passwd entry for name = <random user> the filer can ping the FQDN of dc1 the filer can ping the IP of dc1 the filer cannot ping "dc1" I'm not sure where I'm going wrong, so any pointers would be great.

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• routing table permissions under Windows 7 and openvpn

  - by pilcrow

  My ovpn client, 32-bit OpenVPN 2.1.1 on 64-bit Windows 7 Pro, cannot accept routes pushed to it by my remote endpoint ovpn server. This happens even if I invoke OpenVPN as a member of Administrators, and whether or not I've specified script-security 2 (as suggested by [this question][2]). Mon Mar 29 12:57:19 2010 Notified TAP-Win32 driver to set a DHCP IP/netmask of 192.168.254.3/255.255.255.0 on interface {8BE2E9CF-F4C9-4A5E-98FD-E12DF1B6C3A4} [DHCP-serv: 192.168.254.3, lease-time: 86400] Mon Mar 29 12:57:19 2010 NOTE: FlushIpNetTable failed on interface [14] {GUID} (status=5) : Access is denied. Mon Mar 29 12:57:24 2010 TEST ROUTES: 8/8 succeeded len=8 ret=1 a=0 u/d=up Mon Mar 29 12:57:24 2010 C:\WINDOWS\system32\route.exe ADD 172.20.1.0 MASK 255.255.255.0 192.168.254.1 Mon Mar 29 12:57:24 2010 ROUTE: route addition failed using CreateIpForwardEntry: Access is denied. [status=5 if_index=14] Mon Mar 29 12:57:24 2010 Route addition via IPAPI failed [adaptive] Mon Mar 29 12:57:24 2010 Route addition fallback to route.exe Mon Mar 29 12:57:24 2010 ERROR: Windows route add command failed [adaptive]: returned error code 1 ... and so on for each specific route the server pushes out. It doesn't seem right to me that the administrative user, the one configured at Windows 7 install time, should need further privileges. What am I missing?

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• imapsync - Authentication failed

  - by Touff

  I've deployed many Google Apps accounts and have used imapsync a number of times to migrate accounts to Google Apps. This time however, no matter what I try imapsync refuses to work claiming my credentials are incorrect - I've checked them time and time again and they are 100% correct. On Ubuntu 12, built from source, my command is: imapsync --host1 myserver.com --user1 [email protected] --password1 mypassword1 -ssl1 --host2 imap.gmail.com --user2 [email protected] --password2 mypassword2 -ssl2 -authmech2 PLAIN Full output from the command: get options: [1] PID is 21316 $RCSfile: imapsync,v $ $Revision: 1.592 $ $Date: With perl 5.14.2 Mail::IMAPClient 3.35 Command line used: /usr/bin/imapsync --debug --host1 myserver.com --user1 [email protected] --password1 mypassword1 -ssl1 --host2 imap.gmail.com --user2 [email protected] --password2 mypassword2 -ssl2 -authmech2 PLAIN Temp directory is /tmp PID file is /tmp/imapsync.pid Modules version list: Mail::IMAPClient 3.35 IO::Socket 1.32 IO::Socket::IP ? IO::Socket::INET 1.31 IO::Socket::SSL 1.53 Net::SSLeay 1.42 Digest::MD5 2.51 Digest::HMAC_MD5 1.01 Digest::HMAC_SHA1 1.03 Term::ReadKey 2.30 Authen::NTLM 1.09 File::Spec 3.33 Time::HiRes 1.972101 URI::Escape 3.31 Data::Uniqid 0.12 IMAPClient 3.35 Info: turned ON syncinternaldates, will set the internal dates (arrival dates) on host2 same as host1. Info: will try to use LOGIN authentication on host1 Info: will try to use PLAIN authentication on host2 Info: imap connexions timeout is 120 seconds Host1: IMAP server [SERVER1] port [993] user [USER1] Host2: IMAP server [imap.gmail.com] port [993] user [USER2] Host1: * OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE AUTH=PLAIN AUTH=LOGIN] Dovecot ready. Host1: SERVER1 says it has CAPABILITY for AUTHENTICATE LOGIN Host1: success login on [SERVER1] with user [USER1] auth [LOGIN] Host2: * OK Gimap ready for requests from MY-VPS Host2: imap.gmail.com says it has CAPABILITY for AUTHENTICATE PLAIN Failure: error login on [imap.gmail.com] with user [USER2] auth [PLAIN]: 2 NO [AUTHENTICATIONFAILED] Invalid credentials (Failure) I have tried -authmech2 LOGIN as well which returns: Host2: imap.gmail.com says it has NO CAPABILITY for AUTHENTICATE LOGIN Failure: error login on [imap.gmail.com] with user [[email protected]] auth [LOGIN]: 2 NO [AUTHENTICATIONFAILED] Invalid credentials (Failure) If anyone can shed some light on this I would greatly appreciate it.

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