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Re: [ALUG] Looking up IP address via DNS
by Mark Rogers 19 Apr '13

19 Apr '13

On 18 April 2013 10:16, Mark Rogers <mark(a)more-solutions.co.uk> wrote: > I need a way to do a DNS lookup of an IP address that returns the IP > address. I have managed to solve this in two ways, in case anyone is interested. First: $ dig @8.8.8.8 192.168.1.1 +short $ dig @192.168.100.5 192.168.1.1 +short 192.168.1.1 It turns out that Google's DNS doesn't give an answer when queried for an IP address, but my own office DNS (dnsmasq) does. So controlling the DNS server gives me a solution. Secondly though: I found a way to bypass the braindead behaviour in the unit, and although it's messy it works, so none of the rest of this matters any more! -- Mark Rogers // More Solutions Ltd (Peterborough Office) // 0844 251 1450 Registered in England (0456 0902) @ 13 Clarke Rd, Milton Keynes, MK1 1LG

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Looking up IP address via DNS
by Mark Rogers 18 Apr '13

18 Apr '13

I'm working with a brain dead system, so bear with me... I need a way to do a DNS lookup of an IP address that returns the IP address. I can control the DNS server, and/or possibly apply a suffix to the IP address. The reason is that I have an industrial unit that will accept a hostname (for FTP purposes) but if I enter an IP address it fails, and this appears to be because its DNS lookup of that address is failing. The unit should have Internet access and I can set the DNS server to whatever I like, so one option would may to run my own DNS server that when queried for "192.168.1.1" returns the IP address "192.168.1.1". That pre-supposes that the unit isn't already detecting that "192.168.1.1" is an IP address, not doing a DNS lookup, but then failing for some other reason (where it does not fail if I use a name which looks up to that IP). A "better" solution is probably to apply a suffix, so instead of entering "192.168.1.1" I enter "192.168.1.1.example.com" [1] where the DNS for "example.com" will return the IP address. That way I know that the unit will be forced to go through a DNS lookup and is more likely to just work. I'd just need some guidance on setting up BIND or some other DNS to achieve this. Any ideas? The "best" option would be to get the manufacturer to fix their product but it turns out that the best options aren't always available :-( [1] Just for clarity: the user enters the IP address and I have no control over what address they'll enter. In my code I then detect that it's an IP address rather than a hostname (probably just checking whether the last character is numeric would suffice), and appending ".example.com" before passing to the FTP handling code. -- Mark Rogers // More Solutions Ltd (Peterborough Office) // 0844 251 1450 Registered in England (0456 0902) 21 Drakes Mews, Milton Keynes, MK8 0ER

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Qt5 again...
by Peter Alcibiades 17 Apr '13

17 Apr '13

I have found one of the files, what I don't know how to do is put it into the path.... Al

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QT5 compile errors
by Peter Alcibiades 17 Apr '13

17 Apr '13

This is the error I am getting:- Could not find a package configuration file provided by "Qt5Core" with any of the following names: Qt5CoreConfig.cmake qt5core-config.cmake Add the installation prefix of "Qt5Core" to CMAKE_PREFIX_PATH or set "Qt5Core_DIR" to a directory containing one of the above files. If "Qt5Core" provides a separate development package or SDK, be sure it has been installed. I am trying to compile and install Sigil from source. Anyone know specifically how to do what its asking for? Like what to put in what file? Al

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[ALUG Announce] 3rd Monday Monthly Ipswich Social Meeting : The Mulberry Tree
by samwise 14 Apr '13

14 Apr '13

ALUG Announce Please send announcements to Announce(a)lists.alug.org.uk Unsub, change settings via http://lists.alug.org.uk/mailman/listinfo/announce ----- The monthly "Third Monday" ALUG Ipswich Social Meeting is back tomorrow, 15th April, at 20:00: The Mulberry Tree 5 Woodbridge Road IPSWICH IP4 2EA Tel: 01473 225776 Map/Directions URI: http://maps.google.co.uk/?q=IP4+2EA WWW: https://www.facebook.com/MULBERRYHOSPITALITY The Mulberry Tree, previously known as The Milestone Beer House, is a grade 2 listed building in the centre of Ipswich. It is located at the intersection between Woodbridge Road and the A1156, across the road from the old Odeon cinema and not far from the Regent Theatre. It re-opened on Thursday March 29th 2012 after a major refurbishment, under its original name of The Mulberry House and has already begun to regain a good reputation for its selection of beers and ales. It has a sizeable car park to the rear of the building. All are welcome, novices and experienced users. Feel free to ask for further information on the Main ALUG mailing list. I should be arriving at 20:00 - hope to see some of you there! Cheers, Peter. ----- Send discussion replies to main(a)lists.alug.org.uk (Reply-To set) Unsub, change settings via http://lists.alug.org.uk/mailman/listinfo/announce

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USB 2.0 to ethernet adaptors
by mick 11 Apr '13

11 Apr '13

Hi all Does anyone have any experience of using USB 2.0 to ethernet adaptors? Ignoring the apparently magical ability to get more than 280 Mbits/s of adaptors advertised as "USB 2.0 to gigabit ethernet", what is the realistic maximum throughput anyone has experienced with such devices, and on what architectures? I am considering options for building a very small, low powered in-line F/W and some of the devices I am looking at only have one ethernet port (but often two or more USB ports). Any and all advice (up to and including "don't be silly, do it properly") happily accepted. Cheers Mick --------------------------------------------------------------------- blog: baldric.net gpg fingerprint: FC23 3338 F664 5E66 876B 72C0 0A1F E60B 5BAD D312 ---------------------------------------------------------------------

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What does group 199528447 mean
by Chris Walker 11 Apr '13

11 Apr '13

Having dutifully followed advice and backed up my NAS drive using rsync, I have formatted the NAS and now want to write the contents of the rynced drive back to the NAS. But it gives me lots of 'Permission Denied' errors. I thought I'd re-created the NAS as it was but that's done through a web browser so I might well have screwed it up but it seems to be working, albeit that I can't now write to it. So once and for all, I'd like to fix the problem so that in the future, I can read and write files to the NAS without experiencing permission errors. I tried to find the cause of this error on google but it only returns one result and that's no help at all. I then looked at the groups configuration GUI on the machine but there are no groups numbered above 500 so how come this one is saying 199528447? If it helps, the user number is the same. So where do I start with trying to fault find this?

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Running commands at boot
by Chris Walker 11 Apr '13

11 Apr '13

I run some software called RPCEmu (http://www.marutan.net/rpcemu/) and I want to run networking on it. I've setup networking on the emulator and also on my linux box. But I have to run the commands each time. These are the commands, run as root :- iptables -I FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT iptables -t nat -A POSTROUTING --source 172.31.0.0/16 -o eth0 -j MASQUERADE sysctl -w net.ipv4.ip_forward=1 sysctl -w net.ipv4.ip_dynaddr=1 How do I run them each time I switch on the machine so that they're run as root? Any help appreciated.

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[ALUG Announce] ALUG Norwich Pub Meet Thursday 11th April
by Viperfang 08 Apr '13

08 Apr '13

ALUG Announce Please send announcements to Announce(a)lists.alug.org.uk Unsub, change settings via http://lists.alug.org.uk/mailman/listinfo/announce ----- Hello Norwich Aluggers, Our monthly ALUG Norwich social meeting will be held this Thursday, 11th April at The Coach and Horses (82 Thorpe Road, Norwich, NR1 1BA). The meeting officially starts at 8pm, although some people may arrive earlier. More information on those people can be found on the list and the IRC channel. If you are unsure if you will recognise us then make yourself and your intent to attend known by either posting on list or visiting us on IRC so we can look out for you rather than hiding in the corner. Optionally you could ask at the bar if they know where the geeky computer weirdos are and they'll point you in the right direction (seriously!). Another possibility is look for heaps of electronics on a table that may possibly look like movie props that would used for detonating explosives. Feel free to bring electronics/laptops/gadgets to the meet, you will by no means be alone. Ben Bewick aka Viperfang NB: This mail is automated, please refer to the usual sources for more information. ALUG Contact Details: Website : http://www.alug.org.uk/ IRC : #alug on irc.alug.org.uk List : http://lists.alug.org.uk/mailman/listinfo Twitter : http://twitter.com/anglianlug Identica: TBA Facebook: http://www.facebook.com/group.php?gid=2381613902 ----- Send discussion replies to main(a)lists.alug.org.uk (Reply-To set) Unsub, change settings via http://lists.alug.org.uk/mailman/listinfo/announce

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Dropbox alternatives, was Re: Diagnosing high X CPU usage
by Mark Rogers 07 Apr '13

07 Apr '13

On 2 April 2013 16:31, MJ Ray <mjr(a)phonecoop.coop> wrote: > > Owncloud, either with your own storage (it can use lots) but I don't > remember if anyone does loss-leader offers like the free 2GB for it > yet. Following a link from OwnCloud's website, I find that OwnDrive.com do a free 1GB account. However, I have looked at OwnCloud (briefly) a long time ago so I thought I'd have another look at it, using my own server to host it. I decided to go with the install from the OpenSuse Build Farm repositories (onto Ubuntu 12.04), since that takes care of updates. However: $ sudo apt-get install owncloud [...] The following extra packages will be installed: autoconf automake autotools-dev binutils cpp cpp-4.6 gcc gcc-4.6 libc-dev-bin libc6-dev libltdl-dev libmpc2 libmpfr4 libquadmath0 libssl-dev libssl-doc libtool linux-libc-dev m4 manpages-dev php-pear php-xml-parser php5-dev php5-sqlite shtool zlib1g-dev That's a lot of dependencies that I wouldn't expect? -- Mark Rogers // More Solutions Ltd (Peterborough Office) // 0844 251 1450 Registered in England (0456 0902) @ 13 Clarke Rd, Milton Keynes, MK1 1LG

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