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• Port forwarding DD-WRT

  - by Pawel

  Hi, I'am runing locally service on port 81 (192.168.1.101) I would like to access server from outside MY.WAN.IP.ADDR:81. Everything is working fine on my local network, However can't access it from outside. Below iptables rules on the router. I am using dd-wrt and asus rt-n16 (everything is setup through standard port range forwarding in dd-wrt ) It might be something obvious, but I don't have any experience with routing. Any help will be really appreciated. Thanks. #iptables -t nat -vnL Chain PREROUTING (policy ACCEPT 1285 packets, 148K bytes) pkts bytes target prot opt in out source destination 3 252 DNAT icmp -- * * 0.0.0.0/0 MY.WAN.IP.ADDR to:192.168.1.1 5 300 DNAT tcp -- * * 0.0.0.0/0 MY.WAN.IP.ADDR tcp dpt:81 to:192.168.1.101 0 0 DNAT udp -- * * 0.0.0.0/0 MY.WAN.IP.ADDR udp dpt:81 to:192.168.1.101 298 39375 TRIGGER 0 -- * * 0.0.0.0/0 MY.WAN.IP.ADDR TRIGGER type:dnat match:0 relate:0 Chain POSTROUTING (policy ACCEPT 7 packets, 433 bytes) pkts bytes target prot opt in out source destination 747 91318 SNAT 0 -- * vlan2 0.0.0.0/0 0.0.0.0/0 to:MY.WAN.IP.ADDR 0 0 RETURN 0 -- * br0 0.0.0.0/0 0.0.0.0/0 PKTTYPE = broadcast Chain OUTPUT (policy ACCEPT 86 packets, 5673 bytes) pkts bytes target prot opt in out source destination # iptables -L Chain INPUT (policy ACCEPT) target prot opt source destination DROP tcp -- anywhere anywhere tcp dpt:webcache DROP tcp -- anywhere anywhere tcp dpt:www DROP tcp -- anywhere anywhere tcp dpt:https DROP tcp -- anywhere anywhere tcp dpt:69 DROP tcp -- anywhere anywhere tcp dpt:ssh DROP tcp -- anywhere anywhere tcp dpt:ssh DROP tcp -- anywhere anywhere tcp dpt:telnet DROP tcp -- anywhere anywhere tcp dpt:telnet Chain FORWARD (policy ACCEPT) target prot opt source destination ACCEPT 0 -- anywhere anywhere TCPMSS tcp -- anywhere anywhere tcp flags:SYN,RST/SYN TCPMSS clamp to PMTU lan2wan 0 -- anywhere anywhere ACCEPT 0 -- anywhere anywhere state RELATED,ESTABLISHED logaccept tcp -- anywhere pawel-ubuntu tcp dpt:81 logaccept udp -- anywhere pawel-ubuntu udp dpt:81 TRIGGER 0 -- anywhere anywhere TRIGGER type:in match:0 relate:0 trigger_out 0 -- anywhere anywhere logaccept 0 -- anywhere anywhere state NEW Chain OUTPUT (policy ACCEPT) target prot opt source destination Chain advgrp_1 (0 references) target prot opt source destination Chain advgrp_10 (0 references) target prot opt source destination Chain advgrp_2 (0 references) target prot opt source destination Chain advgrp_3 (0 references) target prot opt source destination Chain advgrp_4 (0 references) target prot opt source destination Chain advgrp_5 (0 references) target prot opt source destination Chain advgrp_6 (0 references) target prot opt source destination Chain advgrp_7 (0 references) target prot opt source destination Chain advgrp_8 (0 references) target prot opt source destination Chain advgrp_9 (0 references) target prot opt source destination Chain grp_1 (0 references) target prot opt source destination Chain grp_10 (0 references) target prot opt source destination Chain grp_2 (0 references) target prot opt source destination Chain grp_3 (0 references) target prot opt source destination Chain grp_4 (0 references) target prot opt source destination Chain grp_5 (0 references) target prot opt source destination Chain grp_6 (0 references) target prot opt source destination Chain grp_7 (0 references) target prot opt source destination Chain grp_8 (0 references) target prot opt source destination Chain grp_9 (0 references) target prot opt source destination Chain lan2wan (1 references) target prot opt source destination Chain logaccept (3 references) target prot opt source destination ACCEPT 0 -- anywhere anywhere Chain logdrop (0 references) target prot opt source destination DROP 0 -- anywhere anywhere Chain logreject (0 references) target prot opt source destination REJECT tcp -- anywhere anywhere tcp reject-with tcp-reset Chain trigger_out (1 references) target prot opt source destination #iptables -vnL FORWARD Chain FORWARD (policy ACCEPT 130 packets, 5327 bytes) pkts bytes target prot opt in out source destination 15 900 ACCEPT 0 -- br0 br0 0.0.0.0/0 0.0.0.0/0 390 20708 TCPMSS tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp flags:0x06/0x02 TCPMSS clamp to PMTU 182K 130M lan2wan 0 -- * * 0.0.0.0/0 0.0.0.0/0 179K 129M ACCEPT 0 -- * * 0.0.0.0/0 0.0.0.0/0 state RELATED,ESTABLISHED 0 0 logaccept tcp -- * * 0.0.0.0/0 192.168.1.101 tcp dpt:81 0 0 logaccept udp -- * * 0.0.0.0/0 192.168.1.101 udp dpt:81 0 0 TRIGGER 0 -- vlan2 br0 0.0.0.0/0 0.0.0.0/0 TRIGGER type:in match:0 relate:0 2612 768K trigger_out 0 -- br0 * 0.0.0.0/0 0.0.0.0/0 2482 762K logaccept 0 -- br0 * 0.0.0.0/0 0.0.0.0/0 state NEW

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• Sendmail relay authentication

  - by Pawel Veselov

  I'm trying to set up my sendmail to authenticate against a relay (comcast). I'm not seeing any attempts to authenticate at all. I'm trying to just debug how authentication works, and can't connect all the pieces... I have, in my .mc file: define(`RELAY_MAILER_ARGS', `TCP $h 587')dnl define(`SMART_HOST', `relay:smtp.comcast.net.')dnl define(`confAUTH_MECHANISMS', `PLAIN')dnl FEATURE(`authinfo',`hash /etc/mail/client-info')dnl And in my /etc/mail/client-info: AuthInfo:*.comcast.net "U:root" "I:comcast_user" "P:comcast_password" Now, I know everything is fine with the u/p, as I could authenticate directly through SMTP, using telnet. There are two things I don't understand. When AuthInfo records are searched for, they are matched by the target hostname. How? Does it it use the map key (something I would expect), or uses the so-called "Domain" ("R:" parameter that I don't set in my auth-info line) What is "U:", really? Sendmail README (http://www.sendmail.org/m4/smtp_auth.html) says it's "user(authoraztion id)", and "I:" is "authentication ID". That suggests that my username should be in "U:", actually, but http://www.sendmail.org/~ca/email/auth.html says that "I:" is your remote user name. The session looks like this: [root@manticore]/etc/mail# sendmail -qf -v Warning: Option: AuthMechanisms requires SASL support (-DSASL) Running /var/spool/mqueue/p97CgcWq023273 (sequence 1 of 399) [email protected]... Connecting to smtp.comcast.net. port 587 via relay... 220 omta19.westchester.pa.mail.comcast.net comcast ESMTP server ready >>> EHLO my.host.name 250-omta19.westchester.pa.mail.comcast.net hello [my.ip.add.res], pleased to meet you 250-HELP 250-AUTH LOGIN PLAIN 250-SIZE 15728640 250-ENHANCEDSTATUSCODES 250-8BITMIME 250-STARTTLS 250 OK >>> STARTTLS 220 2.0.0 Ready to start TLS >>> EHLO my.host.name 250-omta19.westchester.pa.mail.comcast.net hello [my.ip.add.res], pleased to meet you 250-HELP 250-AUTH LOGIN PLAIN 250-SIZE 15728640 250-ENHANCEDSTATUSCODES 250-8BITMIME 250 OK >>> MAIL From:<> SIZE=2183 550 5.1.0 Authentication required MAILER-DAEMON... aliased to postmaster postmaster... aliased to root root... aliased to [email protected] postmaster... aliased to root root... aliased to [email protected] >>> RSET 250 2.0.0 OK [root@manticore]/etc/mail# sendmail -d0.1 Version 8.14.3 Compiled with: DNSMAP LOG MAP_REGEX MATCHGECOS MILTER MIME7TO8 MIME8TO7 NAMED_BIND NETINET NETINET6 NETUNIX NEWDB NIS PIPELINING SCANF SOCKETMAP STARTTLS TCPWRAPPERS USERDB XDEBUG Thanks, Pawel.

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• How to make pulseaudio work again?

  - by Pawel M.

  I was having problems with sound (mono only output), so following advice from another askubuntu question I made some edits in /etc/pulse/default.pa After rebooting I had no sound at all. So I deleted /etc/pulse/default.pa entirely and tried another reboot. I did not backup the file (stupid, I know). How to come back to working config? edit: I tried: sudo apt-get remove pulseaudio (reboot) sudo apt-get install pulseaudio (reboot) It's still not working. The file /etc/pulse/default.pa is missing. Here's what pulseaudio and pacmd commands show: $ pulseaudio E: [pulseaudio] main.c: Daemon startup without any loaded modules, refusing to work. $ pacmd No PulseAudio daemon running, or not running as session daemon.

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• How can I remove new kernel versions after downgrading?

  - by Pawel

  i have some problem. First i upgraded ubuntu to 12.04 and all of packages. But after that i have a lot of problems so i decided to downgrade to 11.10. After i did that i have two kernels 3.2.x and 3.0.x. I found a lot of solutions how to remove older kernels but i have no idea how to remove newer kernel ? I dont see 3.2 kernel when im using a 3.0 kernel. But i see it in grub. When i type uname -r in terminal i see only 3.0.x kernel which im using at the moment.. Any solutions to delete 3.2 kernel ?

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• VMware sharing folders between Win7 (host) and Ubuntu (guest)

  - by Pawel Goscicki

  What is the best way to share a folder between Win7 64bit (host) and Ubuntu 10.10 (guest) in VMware player? I can setup the sharing just fine (using vmware-tools), but all shared files are root:root owned with 777 permission set. Which, well, sucks. What can I do to have shared files with preserved ownership and permissions? I'm guessing I would need some kind of a file container, that would get mounted in Ubuntu as a block device (if so, it would need to be dynamic, i.e. expand with size of contained files). But maybe there is a better solution?

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• Xubuntu 12.04 notifications buttons don't work

  - by Pawel Karpinski

  "When I tried to reconnect my bluetooth mouse I realized all notification windows do not allow me to press any buttons. Nothing happens. I can close them out but clicking options like "allow" "deny" does nothing." After some googling I found that I'm not the only one with this problem, but I can't find any fix. Any help? :) edit: link with discussion on Ubuntu Forums, where some dude guy has the same problem: http://ubuntuforums.org/showthread.php?p=11917621

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• Dealing with FUD? [on hold]

  - by Pawel G.

  How to interact with colleague who will happily talk about a thing, but from the way he talk about it, it becomes clear, that he does not fully understand some underlying concepts - but at the same time is not that kind of personality, that would ask for clarification or explanation (maybe because it is sign of weakness). There is difficulty involved in such a situation, since such people will demand to be consulted in a decision process, but instead of brainstorming solutions one will need to neutralize the diffusion of the concepts first, and when this is done time is already up and solution cannot be brainstormed any more. Maybe FUD is not the correct acronym, maybe DIS, Diffusion, Indifference, Surety.

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• How do I fix "Library not loaded: libssl.1.0.0.dylib" with PostgreSQL?

  - by Simpleton

  After deleting Macports, I've had some strange behaviour. When I try to run PostgreSQL via CLI, I get: pawel:~ pawel$ psql dyld: Library not loaded: /opt/local/lib/libssl.1.0.0.dylib Referenced from: /usr/local/bin/psql Reason: image not found Trace/BPT trap This is strange because I've installed Postgresql through Homebrew and running brew list confirms that it's there. How would I get psql to work again? Additionally, trying to install the pg gem fails due to an file not found: /opt/local/lib/libssl.1.0.0.dylib error. I need to make Postgres not look in the /opt/local/ directory for this file.

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• How to monitor HTTP(S) traffic / URLs in Android?

  - by Pawel Krakowiak

  I'm interested in whether there is a way to monitor HTTP(S) traffic on an Android phone? What I would like to do is to be able to retrieve all URLs that have been accessed on the phone's browser. I thought that there would be a browser intent for that, but have not seen anything - given I'm green, maybe I just did not know where to look? I followed the question and answer here, but it works only for hyperlinks which were clicked by the user, however I need to catch all URLs - including the ones typed in by the user. Basically I need to know about every single URL that was opened in the web browser. Can I register some kind of a handler with the browser? Is something like that feasible at all?

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• How to assert that a class has an inherited attribute, but excluding the parent class at the same ti

  - by Pawel Krakowiak

  I have two attributes - MigrationAttribute and TestDataMigrationAttribute : MigrationAttribute. How can I assert that a class has applied TestDataMigrationAttribute but not MigrationAttribute (which is the parent attribute class)?

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• How to globalize ASP.NET MVC views (decimal separators in particular)?

  - by Pawel Krakowiak

  I'm working with the NerdDinner sample application and arrived at the section which deals with the Virtual Earth map. The application stores some values for the longitude and latitude. Unfortunately on my system floating point numbers are stored with a comma as the decimal separator, not a dot like in the US. So if I have a latitude of 47.64 it's retrieved and displayed as 47,64. Because that value is passed in a function call to the Virtual Earth API it fails at that point (e.g. JavaScript API expects 47.64, -122.13, but gets 47,64, -122,13). I need to make sure that the application always uses dots. In a WebForms app I would have a common class which overrides the System.Web.UI.Page.InitializeCulture() method and I would be inheriting my pages from that class. I am not sure about how to do the same with MVC. Do I need a customized ViewPage or something? Is there an easy way to solve this? Examples?

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• How to select chosen columns from two different entities into one DTO using NHibernate?

  - by Pawel Krakowiak

  I have two classes (just recreating the problem): public class User { public virtual int Id { get; set; } public virtual string FirstName { get; set; } public virtual string LastName { get; set; } public virtual IList<OrgUnitMembership> OrgUnitMemberships { get; set; } } public class OrgUnitMembership { public virtual int UserId { get; set; } public virtual int OrgUnitId { get; set; } public virtual DateTime JoinDate { get; set; } public virtual DateTime LeaveDate { get; set; } } There's a Fluent NHibernate map for both, of course: public class UserMapping : ClassMap<User> { public UserMapping() { Table("Users"); Id(e => e.Id).GeneratedBy.Identity(); Map(e => e.FirstName); Map(e => e.LastName); HasMany(x => x.OrgUnitMemberships) .KeyColumn(TypeReflector<OrgUnitMembership> .GetPropertyName(p => p.UserId))).ReadOnly().Inverse(); } } public class OrgUnitMembershipMapping : ClassMap<OrgUnitMembership> { public OrgUnitMembershipMapping() { Table("OrgUnitMembership"); CompositeId() .KeyProperty(x=>x.UserId) .KeyProperty(x=>x.OrgUnitId); Map(x => x.JoinDate); Map(x => x.LeaveDate); References(oum => oum.OrgUnit) .Column(TypeReflector<OrgUnitMembership> .GetPropertyName(oum => oum.OrgUnitId)).ReadOnly(); References(oum => oum.User) .Column(TypeReflector<OrgUnitMembership> .GetPropertyName(oum => oum.UserId)).ReadOnly(); } } What I want to do is to retrieve some users based on criteria, but I would like to combine all columns from the Users table with some columns from the OrgUnitMemberships table, analogous to a SQL query: select u.*, m.JoinDate, m.LeaveDate from Users u inner join OrgUnitMemberships m on u.Id = m.UserId where m.OrgUnitId = :ouid I am totally lost, I tried many different options. Using a plain SQL query almost works, but because there are some nullable enums in the User class AliasToBean fails to transform, otherwise wrapping a SQL query would work like this: return Session .CreateSQLQuery(sql) .SetParameter("ouid", orgUnitId) .SetResultTransformer(Transformers.AliasToBean<UserDTO>()) .List<UserDTO>() I tried the code below as a test (a few different variants), but I'm not sure what I'm doing. It works partially, I get instances of UserDTO back, the properties coming from OrgUnitMembership (dates) are filled, but all properties from User are null: User user = null; OrgUnitMembership membership = null; UserDTO dto = null; var users = Session.QueryOver(() => user) .SelectList(list => list .Select(() => user.Id) .Select(() => user.FirstName) .Select(() => user.LastName)) .JoinAlias(u => u.OrgUnitMemberships, () => membership) //.JoinQueryOver<OrgUnitMembership>(u => u.OrgUnitMemberships) .SelectList(list => list .Select(() => membership.JoinDate).WithAlias(() => dto.JoinDate) .Select(() => membership.LeaveDate).WithAlias(() => dto.LeaveDate)) .TransformUsing(Transformers.AliasToBean<UserDTO>()) .List<UserDTO>();

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• Non-Latin characters in URLs - is it better to encode them or replace with their Latin "counterparts

  - by Pawel Krakowiak

  We're implementing a blog for a site which supports six different languages and five of them have non-Latin characters in their alphabets. We are not sure whether we should have them encoded (that is what we're doing at the moment) Létání s potravinami: Co je dovoleno? becomes l%c3%a9t%c3%a1n%c3%ad-s-potravinami-co-je-dovoleno and the browser displays it as létání-s-potravinami-co-je-dovoleno. or if we should replace them with their Latin "counterparts" (similar looking letters) Létání s potravinami: Co je dovoleno? becomes letani-s-potravinami-co-je-dovoleno. I can't find a definitive answer as to what's better from SEO perspective? Search engine optimization is very important for us. Which approach would you suggest?

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• watch with bash colors preserved

  - by Pawel Goscicki

  From man watch: Non-printing characters are stripped from program output. Use "cat -v" as part of the command pipeline if you want to see them. So how do I use cat -v if I want to see the colored output from: watch ls -al --color

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• bash watch command with colors preserved

  - by Pawel Goscicki

  From man watch: Non-printing characters are stripped from program output. Use "cat -v" as part of the command pipeline if you want to see them. So how do I use cat -v if I want to see the colored output from: watch ls -al --color

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• How do I make ESXi 5.0 to shutdown virtual machines when the physical power button is pushed?

  - by Pawel Sawicki

  I have a home NAS/DLNA server built out of an HP Micro Server with the HP branded VMware ESXi 5.0.0 build-623860 (free license) installed. Being a home media center I'd like it to be "manageable" by all my household members. This requires that it needs to be powered on an off (including all the VMs inside) by anybody with the physical access to the server by simply pressing the power button on the chassis. The "startup" part is easy to obtain - all I had to do was to configure the startup/shutdown policy: Once the server powers up, all VMs start as well and that's exactly what I need. Well.. it did work up until 5.0.0U1, but that's a different story: http://blogs.vmware.com/vsphere/2012/03/free-esxi-hypervisor-auto-start-breaks-with-50-update-1.html Unfortunately, pressing the power button doesn't gracefully shutdown the guest machines - they are terminated instead. If I run the "shut down" command from the vSphere Client interface guests are powered off. I'd like to get the same end result when the physical power button is switched. I've poked around a bit on the ESXi server. There's a "/sbin/shutdown.sh" script that seemed to do exactly what I need... but after trying it does exactly what the power off button. The "/etc/inittab" contains an entry for the "shutdown" level but I suppose it's not hooked to the power button. I can't find any acpi related configuration, neither do I know what exactly is executed when the power button is pressed. Does anybody have a clue how can I make the VMs shutdown automatically when the physical power switch is pressed to turn of the computer?

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• SMTP for multiple domains on virtual interfaces

  - by Pawel Goscicki

  The setup is like this (Ubuntu 9.10): eth0: 1.1.1.1 name.isp.com eth0:0 2.2.2.2 example2.com eth0:1 3.3.3.3 example3.com example2.com and example3.com are web apps which need to send emails to their users. 2.2.2.2 points to example2.com and vice-versa (A/PTR). MX - Google. Google handles all incoming mail. 3.3.3.3 points to example3.com and vice-versa (A/PTR). MX - Google. Google handles all incoming mail. Requirements: Local delivery must be disabled (must deliver to MX specified server), so that the following works (note that there is no local user bob on the machine, but there is an existing bob email user): echo "Test" | mail -s "Test 6" [email protected] I need to be able to specify from which IP/domain name the email is delivered when sending an email. I fought with sendmail. With not much luck. Here's some debug info: sendmail -d0.12 -bt < /dev/null Canonical name: name.isp.com UUCP nodename: host a.k.a.: example2.com a.k.a.: example3.com ... Sendmail always uses canonical name (taken from eth0). I've found no way for it to select one of the UUCP codenames. It uses it for sending email: echo -e "To: [email protected]\nSubject: Test\nTest\n" | sendmail -bm -t -v [email protected]... Connecting to [127.0.0.1] via relay... 220 name.isp.com ESMTP Sendmail 8.14.3/8.14.3/Debian-9ubuntu1; Wed, 31 Mar 2010 16:33:55 +0200; (No UCE/UBE) logging access from: localhost(OK)-localhost [127.0.0.1] >>> EHLO name.isp.com I'm ok with other SMTP solutions. I've looked briefly at nbsmtp, msmtp and nullmailer but I'm not sure thay can deal with disabling local delivery and selecting different domains when sending emails. I also know about spoofing sender field by using mail -a "From: <[email protected]>" but it seems to be a half-solution (mails are still sent from isp.com domain instead of proper example2.com, so PTR records are unused and there's more risk of being flagged as spam/spammer).

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• Windows Server - share files without access for administrator

  - by Pawel

  We have a MS Windows Server 2008 R8 based server that is administrated by our IT department. We would like to achieve two things simultaneously: A folder on the server, containing several thousand files (new files added frequently) that is accessible to some ActiveDirectory users (e.g. board of directors) but is not accessible by IT department employees IT department employees still maintain rights to administrate the server, including installing new software and services We already checked some solutions: Using NTFS access rights. Unfortunately IT (members of "Administrators" group) can set themselves as new owners of the files and change the permissions so that they gain access to the files. Enabling EFS. Unfortunately even if you do not allow IT to access files, they still can disable EFS completely because they have administrative rights. Moreover as far as I know you have to manually add permissions for all users but the owner for each new file - very inconvenient. Creating a new role for the IT department that has all the privileges apart from taking ownership of files. Unfortunately if you're not a member of the Administrators group, you cannot install new software, no matter what privileges you add to the role. TrueCrypt - nice free encryption software, but with poor sharing capabilities. You can either mount an encryption container on the server (and then IT has access to its contents) or you mount them locally but only one user can mount it for writing. AxCrypt - free encryption software that enables file-by-file encryption on the server. There are some disadvantages though - you have to manually encrypt each new file added. The files have their extensions changes. You can only set one password for all files (so all users have to know this one password). Any other ideas? Our budget is limited so enterprise-class software from Symantec or PGP would probably be not an option.

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• Windows Server - share files without access for administrator

  - by Pawel

  We have a MS Windows Server 2008 R8 based server that is administrated by our IT department. We would like to achieve two things simultaneously: A folder on the server, containing several thousand files (new files added frequently) that is accessible to some ActiveDirectory users (e.g. board of directors) but is not accessible by IT department employees IT department employees still maintain rights to administrate the server, including installing new software and services We already checked some solutions: Using NTFS access rights. Unfortunately IT (members of "Administrators" group) can set themselves as new owners of the files and change the permissions so that they gain access to the files. Enabling EFS. Unfortunately even if you do not allow IT to access files, they still can disable EFS completely because they have administrative rights. Moreover as far as I know you have to manually add permissions for all users but the owner for each new file - very inconvenient. Creating a new role for the IT department that has all the privileges apart from taking ownership of files. Unfortunately if you're not a member of the Administrators group, you cannot install new software, no matter what privileges you add to the role. TrueCrypt - nice free encryption software, but with poor sharing capabilities. You can either mount an encryption container on the server (and then IT has access to its contents) or you mount them locally but only one user can mount it for writing. AxCrypt - free encryption software that enables file-by-file encryption on the server. There are some disadvantages though - you have to manually encrypt each new file added. The files have their extensions changes. You can only set one password for all files (so all users have to know this one password). Any other ideas? Our budget is limited so enterprise-class software from Symantec or PGP would probably be not an option.

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• How to bind up arrow in ~/.inputrc (readline) for vim insert mode?

  - by Pawel Goscicki

  When in Readline apps with vim mode enabled in ~/.inputrc (set editing-mode vi) is there a way to bind the up arrow key? To previous history, for example. It seems I have to press ESC key first, only then it works. Here's my attempt at making it work (~/.inputrc): $if mode=vi # INSERT MODE set keymap vi-insert "\e[A": history-search-backward # up-arrow "\e[B": history-search-forward # down-arrow Also note, that when I press Ctrl+v and then <Up>, it prints ^[[A.

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• Own hosting, own domain on Virtualbox Ubuntu server - dynamic IP

  - by Pawel

  Hi, I have bought my TLD domain, say domain.com. What I'd like to do is to host the website available under this address on my own computer. I'm assigned a dynamic IP, and I'm also behind a router in my local network. I'd run sites on my ubuntu server on a virtualbox machine which is available in my local network. Preferably, I'd like to have my own domain on some server, with which I could experiment as much as I need (so it's only for educational purposes), but I can't afford to buy such a service. Is it feasible? Can you provide steps I'd need to take to configure it (could be just general explanation). I'd need some guidance, please.

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• Get IFrame parent url or referrer using javascript or php

  - by Pawel

  I am creating a widget that would load in a IFrame and users will be able to place the widget on their own website. How would I get the URL of the website that is using the IFrame in javascript and/or PHP? The IFrame loads a php file. I have tried "parent.top.location.href" and "parent.document.referrer" in the IFrame page but that is undefined. I have also tried to echo "$_Server[referrer]" in the IFrame page and that did return the IFrame parent URL, but how easy is it for someone to manipulate the referrer variable? I dont want to get misleading information.

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• Git branching / rebasing good practices

  - by Pawel Krupinski

  I have a following scenario: 3 branches: - Master - MyBranch branched off Master for the purpose of developing a new feature of the system - MyBranchLocal branched off MyBranch as my local copy of the branch MyBranch is being rebased against and pushed to by other developers (who are working on the same feature as I am). As the owner of the MyBranch branch I want to keep it in sync with Master by rebasing. I also need to merge the changes I make to MyBranchLocal with MyBranch. What is a good way to do that? Couple of possible scenarios I tried so far: I. 1. Commit change to MyBranchLocal 2. Rebase MyBranch against Master 3. Rebase MyBranchLocal against MyBranch 4. Merge MyBranch with MyBranchLocal II. 1. Commit change to MyBranchLocal 2. Merge MyBranch with MyBranchLocal 3. Rebase MyBranch against Master 4. Rebase MyBranchLocal against MyBranch III. 1. Commit change to MyBranchLocal 2. Rebase MyBranch against Master 3. Merge MyBranch with MyBranchLocal 4. Rebase MyBranchLocal against MyBranch I already know that scenario III seems to be messing the commit history up a lot, potentially duplicating commits. What is your experience? What scenarios do you recommend?

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• QueueConnectionFactory for MQSeries

  - by Pawel

  Does anyone know if there is an implementation of javax.jms.QueueConnectionFactory for MQSeries and where to get it? I Googled it and searched IBM website but couldn't find anything. I don't want to retrieve the connection or factory from Websphere MQ via jndi, I need my own connection factory.

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• TCPDF grey background for few cells?

  - by Pawel Mysior

  I'm using TCPDF in CakePHP and trying to make some background (grey) for few cells. Well here the idea: so the grey thing would somehow have to be define outside of the cells containg text. Any ideas? Paul

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