Re: [Hampshire] ubuntu server 10.04 annoyance(s)
On 09/05/2011 03:32, Isaac Close wrote: 1) user password has a maximum of 8 characters, i've tried to change this with passwd but it wont let me. (IMHO this is absolutely ridiculous and should NEVER EVER be allowed on a production server). I've got 10.4.1 on my MPC-L, and it happily takes long passwords (I've just set a 30-character one, as a normal user). Simon -- Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk --
Re: [Hampshire] ref new topic
On 9 May 2011 04:10, Stuart Biggs smbi...@yahoo.co.uk wrote: Hi I am running ubuntu 11.10 and having great difficulty with my printer, I can get ubuntu to see and recognise it but actually getting it to print is a different topic all together. 11.10? Wow, can I have a ride in your tardis please? Failing that can you please tell me next week's euromillions winning numbers? The printer make is a canon model is PIXMA MG5250 it is connected via a standard USB cable. When I attempt to print I get no error messages suggesting any kind of failure at all. So I would appreciate any kind of help/input that any one can come up with regarding this. It's not listed in the linux foundation's supported printer list, which is always a good place to look before buying a printer: http://www.linuxfoundation.org/collaborate/workgroups/openprinting However, there appears to be a proprietary Canon driver .deb package for Ubuntu 10.04 here, which may work for you: http://support-asia.canon-asia.com/contents/ASIA/EN/0100301702.html You do have to scroll down a l o n g way to get to the download link. or there is a tarball here: http://software.canon-europe.com/products/0010889.asp http://support-asia.canon-asia.com/contents/ASIA/EN/0100301702.htmlIf none of those work, try posting : Output of dmesg after you plug it in? Output of lsusb when plugged in? Good luck. Thanks in advance. Stuart Biggs -- Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk -- -- Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk --
Re: [Hampshire] ref new topic
opps yeah ubuntu 11.04 - well its a nice release anyway - quick compared to windows 7 on higher spec systems!! From: Jack Knight j...@pobox.com To: Hampshire LUG Discussion List hampshire@mailman.lug.org.uk Sent: Mon, 9 May, 2011 8:08:46 Subject: Re: [Hampshire] ref new topic On 9 May 2011 04:10, Stuart Biggs smbi...@yahoo.co.uk wrote: Hi I am running ubuntu 11.10 and having great difficulty with my printer, I can get ubuntu to see and recognise it but actually getting it to print is a different topic all together. 11.10? Wow, can I have a ride in your tardis please? Failing that can you please tell me next week's euromillions winning numbers? The printer make is a canon model is PIXMA MG5250 it is connected via a standard USB cable. When I attempt to print I get no error messages suggesting any kind of failure at all. So I would appreciate any kind of help/input that any one can come up with regarding this. It's not listed in the linux foundation's supported printer list, which is always a good place to look before buying a printer: http://www.linuxfoundation.org/collaborate/workgroups/openprinting However, there appears to be a proprietary Canon driver .deb package for Ubuntu 10.04 here, which may work for you: http://support-asia.canon-asia.com/contents/ASIA/EN/0100301702.html You do have to scroll down a l o n g way to get to the download link. or there is a tarball here: http://software.canon-europe.com/products/0010889.asp If none of those work, try posting : Output of dmesg after you plug it in? Output of lsusb when plugged in? Good luck. Thanks in advance. Stuart Biggs -- Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk -- -- Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk --
[Hampshire] When is it necessary to reboot
Running Debian sid means the I get fairly frequent kernel updates, mostly 'point' upgrades. I'm reluctant to reboot un-necessarily but do reboot when it is a major change (like when it went from 2.6.37 to 2.6.38) but should I also reboot on the more minor upgrades? Incidentally I was surprised a few days back to have a message pop up telling me I needed to reboot to complete a software update. No idea what that was about and I ignored it ;-) -- John Lewis using Debian sid -- Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk --
Re: [Hampshire] When is it necessary to reboot
On 9 May 2011 09:12, john lewis johnle...@hantslug.org.uk wrote: Running Debian sid means the I get fairly frequent kernel updates, mostly 'point' upgrades. I'm reluctant to reboot un-necessarily but do reboot when it is a major change (like when it went from 2.6.37 to 2.6.38) but should I also reboot on the more minor upgrades? Install ksplice and uptrack - then in theory you *never* have to reboot. http://www.ksplice.com/ Incidentally I was surprised a few days back to have a message pop up telling me I needed to reboot to complete a software update. No idea what that was about and I ignored it ;-) -- John Lewis using Debian sid -- Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk -- -- Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk --
Re: [Hampshire] ref new topic
Canon Pixma hardware and drivers are notoriously buggy and uncooperative under Linux in my experience of three of them and gets worse the cheaper the model. That said advice here is good, be persistent (although I eventually had to plug my last one into a Windows VM!). Rgds RC Robin Catling Full Circle Podcast On 9 May 2011 08:41, Stuart Biggs smbi...@yahoo.co.uk wrote: opps yeah ubuntu 11.04 - well its a nice release anyway - quick compared to windows 7 on higher spec systems!! -- *From:* Jack Knight j...@pobox.com *To:* Hampshire LUG Discussion List hampshire@mailman.lug.org.uk *Sent:* Mon, 9 May, 2011 8:08:46 *Subject:* Re: [Hampshire] ref new topic On 9 May 2011 04:10, Stuart Biggs smbi...@yahoo.co.uk wrote: Hi I am running ubuntu 11.10 and having great difficulty with my printer, I can get ubuntu to see and recognise it but actually getting it to print is a different topic all together. 11.10? Wow, can I have a ride in your tardis please? Failing that can you please tell me next week's euromillions winning numbers? The printer make is a canon model is PIXMA MG5250 it is connected via a standard USB cable. When I attempt to print I get no error messages suggesting any kind of failure at all. So I would appreciate any kind of help/input that any one can come up with regarding this. It's not listed in the linux foundation's supported printer list, which is always a good place to look before buying a printer: http://www.linuxfoundation.org/collaborate/workgroups/openprinting However, there appears to be a proprietary Canon driver .deb package for Ubuntu 10.04 here, which may work for you: http://support-asia.canon-asia.com/contents/ASIA/EN/0100301702.html You do have to scroll down a l o n g way to get to the download link. or there is a tarball here: http://software.canon-europe.com/products/0010889.asp http://support-asia.canon-asia.com/contents/ASIA/EN/0100301702.htmlIf none of those work, try posting : Output of dmesg after you plug it in? Output of lsusb when plugged in? Good luck. Thanks in advance. Stuart Biggs -- Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk -- -- Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk -- -- -- Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk --
Re: [Hampshire] ref new topic
HI Jack Just to let you know I downloaded the device driver and installed and I did a quick test print - it appears to be working fine so thanks for the help. Stuart Biggs From: Jack Knight j...@pobox.com To: Hampshire LUG Discussion List hampshire@mailman.lug.org.uk Sent: Monday, 9 May 2011, 8:08 Subject: Re: [Hampshire] ref new topic On 9 May 2011 04:10, Stuart Biggs smbi...@yahoo.co.uk wrote: Hi I am running ubuntu 11.10 and having great difficulty with my printer, I can get ubuntu to see and recognise it but actually getting it to print is a different topic all together. 11.10? Wow, can I have a ride in your tardis please? Failing that can you please tell me next week's euromillions winning numbers? The printer make is a canon model is PIXMA MG5250 it is connected via a standard USB cable. When I attempt to print I get no error messages suggesting any kind of failure at all. So I would appreciate any kind of help/input that any one can come up with regarding this. It's not listed in the linux foundation's supported printer list, which is always a good place to look before buying a printer: http://www.linuxfoundation.org/collaborate/workgroups/openprinting However, there appears to be a proprietary Canon driver .deb package for Ubuntu 10.04 here, which may work for you: http://support-asia.canon-asia.com/contents/ASIA/EN/0100301702.html You do have to scroll down a l o n g way to get to the download link. or there is a tarball here: http://software.canon-europe.com/products/0010889.asp If none of those work, try posting : Output of dmesg after you plug it in? Output of lsusb when plugged in? Good luck. Thanks in advance. Stuart Biggs -- Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk -- -- Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk --
[Hampshire] www.servercircle.com
Hello Hampshire Linux folk, I'd just like to publicise a project a couple of us EdLuggers have been working on, which may be of interest to you Linux server hackers out there; - Server Circle - ask and answer server questions www.servercircle.com Server Circle - Ask experts technical questions about anything Server related and earn reputation points or even financial rewards when you answer questions about Server problems. - Server Circle - ask and answer server questions There's a lot of Linux server QA activity on the site already. So, we hope this is of interest, do come visit, sign up, ask and answer questions, and get invovled! Follow us on Twitter @ServerCircle :-) Regards, P -- Peter George -- Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk --
Re: [Hampshire] Linux meeting : 14 May 2011 : Nokia Southwood
Hi Bob Tony Wood HV06PKX Jean Wood, 01252 549884 Tony Wood (from Linux Netbook) On 09/05/11 13:10, robert.beat...@nokia.com wrote: Hi LUGers, Those wishing to come along this Saturday (@ Nokia Southwood - See Surrey LUG for details), please send me your name, car reg and next-of-kin details by Thursday lunchtime please and please mark the email Linux meeting. If you just turn up on the day without registering, you *may* be turned away by our security. :) Bob. -- Bob Beattie Senior Technical Support Engineer Camera Development Systems, MP RD, Nokia Southwood, UK Tel : +44 (0)1252 866452 www.nokia.com -- -- Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk -- -- Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk --
Re: [Hampshire] Networking for Dummies
** Rob Malpass li...@getiton.myzen.co.uk [2011-05-07 09:50]: Moving house shortly which means, for the first time, I have to have my father in law on my network. Now while he's no hacker, he is fond of fiddling and has managed to crash his (Windows) machine so badly over the years that nothing short of a full reinstall has fixed it. His fiddling ranges from downloading patches for stuff he's never thought of using, to coverdisks with offers of games if you include enough adware that checks for updates every time it starts up. I'm sure you get the picture! So he's now going to be part of my LAN. Previously, we have had the luxury of two broadband connections: one cable, one ADSL and I had thought of putting him on a separate router and let that be that. At the new place though, while there are two lines, it seems pointless to pay for another ADSL connection just to keep him isolated. What I want is to keep him isolated so he can't even see any network devices, printers - just let him share the connection. I'm thinking: 1) He runs Kapersky so presumably I could tweak this to allow him only access to IP addresses with outbound traffic outside my LAN's range. 2) Setup some sort of rule on the router - not sure how to do this. 3) IPCop is probably the most detailed solution -but again not sure. Is there an obvious solution out there. I don't want to buy netnanny or something like that for him - far too obvious and condescending but I am really worried. I don't want to software firewall the rest of the family's machines so tightly that they become restricted. ** end quote [Rob Malpass] I'm a little late to this thread, I've been fixing shelves and re-arranging my office all weekend after some shelving decided to start pulling away from the wall with all the computer books and software on them! That's beside the point though. On the basis that your ADSL connection is likely to have several ethernet ports built in I would suggest the simplest thing to do would be to connect the machine into the ADSL router directly and use a fairly standard cable router to connect the rest of the machines behind that. If you connect the 'internet' side to the ADSL router you effectively put anything connected directly to the ADSL router into a sort of DMZ (sort of since it is still firewalled as normal, so not really a proper DMZ) with a separate IP address range that is firewalled off from the rest of the network by the cable router. Cable routers are pretty reasonably priced, or if you are lucky you may pick one up off Freecycle / Freegle (I nabbed a D-Link wireless N unit a while back which has improved my coverage!). Of course if you're not happy using an off the shelf firewall router you're probably not just relying on the ADSL router and have a PC configured you can add an extra NIC to and adjust the routing rules - as already suggested I think. -- Paul Tansom | Aptanet Ltd. | http://www.aptanet.com/ | 023 9238 0001 == Registered in England | Company No: 4905028 | Registered Office: Crawford House, Hambledon Road, Denmead, Waterlooville, Hants, PO7 6NU -- Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk --
Re: [Hampshire] Networking for Dummies
If you connect the 'internet' side to the ADSL router you effectively put anything connected directly to the ADSL router into a sort of DMZ (sort of since it is still firewalled as normal, so not really a proper DMZ) with a separate IP address range that is firewalled off from the rest of the network by the cable router. Errr - I'm not so sure about that. What is behind the cable router has the usual NAT blackhole, but what is hanging off the ADSL router is entirely unprotected from what is behind the cable router. So if the untrusted box is the one behind the cable router, all the trusted boxes are still subject to attack from the problem box. And that box has essentially unfettered Internet access, so it has no protection from PEBKAC either. You could, of course, have it the other way round - but that means reconfiguring everything currently on the network, means that those boxes will have to deal with double-NAT (which may or may not be a problem), and still offers no firewall filtering for the hostile box. So I don't think I agree with you... Vic. -- Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk --
[Hampshire] NIS Client Curiosities
Ladies and gentlemen, I have a strange problem... I have a machine which acts as a login node for a downstream network. This machine repeats the NIS server capabilities of the master (upstream) server. It should also provide correct NIS usernames, groups and passwords. Here's the problem: Users can log onto this box with the correct password, but once logged on they cannot use the groups defined in nis. That is to say, groups username returns users when it is meant to return a whole list. The downstream machines are fine, as are some other machines at the same level in the topology (the other machine with this problem is showing the exact same symptoms). The machine affected is running SLES11. Editing users via Yast shows the full group lists. In /etc/nsswitch I have tried group: compat and group: nis files which has made no difference. I have the appropriate lines added to /etc/passwd and /etc/group. If anyone has any ideas I'd love to hear them. Thanks, Tim B. -- OpenPilot - Open-source Marine Chart Plotter openDynamics - Open-source Vessel Motions Calculation Lead Developer http://openpilot.sourceforge.net http://opendynamics.engineering.selfip.org -- Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk --
Re: [Hampshire] NIS Client Curiosities
Hello Tim, This sounds like a PAM issue. Have a look at how things are stacked, since it is very order-sensitive. -- Regards, Jan Henkins Tim Brocklehurst t...@engineering.selfip.org wrote: Ladies and gentlemen, I have a strange problem... I have a machine which acts as a login node for a downstream network. This machine repeats the NIS server capabilities of the master (upstream) server. It should also provide correct NIS usernames, groups and passwords. Here's the problem: Users can log onto this box with the correct password, but once logged on they cannot use the groups defined in nis. That is to say, groups username returns users when it is meant to return a whole list. The downstream machines are fine, as are some other machines at the same level in the topology (the other machine with this problem is showing the exact same symptoms). The machine affected is running SLES11. Editing users via Yast shows the full group lists. In /etc/nsswitch I have tried group: compat and group: nis files which has made no difference. I have the appropriate lines added to /etc/passwd and /etc/group. If anyone has any ideas I'd love to hear them. Thanks, Tim B. -- OpenPilot - Open-source Marine Chart Plotter openDynamics - Open-source Vessel Motions Calculation Lead Developer http://openpilot.sourceforge.net http://opendynamics.engineering.selfip.org -- Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk_ -- Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk --
Re: [Hampshire] Networking for Dummies
Eclipse used to do multiple IP addresses, I don't know if your ISP does. If so, you could do this with 3 devices: ADSL router and 2x ethernet routers, then you set up 2x standard NAT one on each IP address. That'll safely separate the networks. Benjie. On 9 May 2011 16:43, Vic l...@beer.org.uk wrote: If you connect the 'internet' side to the ADSL router you effectively put anything connected directly to the ADSL router into a sort of DMZ (sort of since it is still firewalled as normal, so not really a proper DMZ) with a separate IP address range that is firewalled off from the rest of the network by the cable router. Errr - I'm not so sure about that. What is behind the cable router has the usual NAT blackhole, but what is hanging off the ADSL router is entirely unprotected from what is behind the cable router. So if the untrusted box is the one behind the cable router, all the trusted boxes are still subject to attack from the problem box. And that box has essentially unfettered Internet access, so it has no protection from PEBKAC either. You could, of course, have it the other way round - but that means reconfiguring everything currently on the network, means that those boxes will have to deal with double-NAT (which may or may not be a problem), and still offers no firewall filtering for the hostile box. So I don't think I agree with you... Vic. -- Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk -- -- Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk --
Re: [Hampshire] Timestamps on photos
Thank you both for your responses. I'll have to have another look around in digikam, as I didn't see functionality that would do this last time I looked. Either that or I'll go for the scripting approach. Perhaps time to dabble in Python or Perl. Leo On 06/05/11 12:07, Joe Wrigley wrote: On 13 April 2011 21:39, Andy Smitha...@strugglers.net wrote: Hi Leo, On Wed, Apr 13, 2011 at 09:21:29PM +0100, Leo wrote: Having got back from holiday I've noticed that the time on my cameras was not set to the correct timezone, or set the same on each camera. Does anyone know of a way of either setting a timezone in a jpeg file (i.e. in the exif), or bulk changing the time in the pictures by a given number of hours? f-spot and digikam both provide a means of doing this. -- Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk -- -- Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk --
Re: [Hampshire] Kmail
Hmmm, OK. I've never managed to get this to work, hence why I was asking about the subscriptions. Leo On 04/05/11 07:33, David Webb (NOC) wrote: Does anyone use Kmail? If so can you explain to me what Servside subscription and Local subscription are on an IMAP account? Despite much googling I still haven't found a decent explanation. I know that it's possible to cache email from an IMAP account locally, for reading when disconnected and I presume one of the subscriptions represents that. I just don't know which, and what the other is for. I use kmail for an IMAP account. Neither of these options are ticked and I still have copies of all my IMAP mail stored on the local machine. The only bug I have found that after moving messages from an IMAP folder to a normal local mail folder, I have to reconnect to the IMAP machine before closing kmail - otherwise I get sent a new set of the moved messages. Regards, David Webb. -- Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk -- -- Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk --
Re: [Hampshire] Kmail
OK. I wasn't aware there were server subscriptions, but that certainly makes sense. I wonder what sort of subscription Thunderbird uses for IMAP then, as I haven't seen the option for server or local in it. Yeah, I should test it really. Although I'm still amazed at how little documentation I could find on this. Leo On 02/05/11 22:32, Samuel Penn wrote: Leoli...@fractal.me.uk wrote: Does anyone use Kmail? If so can you explain to me what Servside subscription and Local subscription are on an IMAP account? Despite much googling I still haven't found a decent explanation. I know that it's possible to cache email from an IMAP account locally, for reading when disconnected and I presume one of the subscriptions represents that. I just don't know which, and what the other is for. I think the difference is that 'server subscriptions' are managed by the server, whilst 'local subscriptions' are managed by the client. i.e., if you add a server subscription, then that subscription will take effect for all clients that you use to connect to that server. However, information about local subscriptions is only held on the client. I think, but that's me guessing based on what I've found. It's not so much to do with caching, but with what folders you see and get notified about when new mail arrives. If you had thousands of folders, then you'd probably only want to see a few - you wouldn't want to get notified any time something new appeared in any folder on the server. I think. You could try this out if you had multiple mail clients, and seeing if changing server subscriptions affects all clients but local subscriptions only affects KMail. -- Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk --
Re: [Hampshire] Timestamps on photos
Leo li...@fractal.me.uk wrote: Thank you both for your responses. I'll have to have another look around in digikam, as I didn't see functionality that would do this last time I looked. Either that or I'll go for the scripting approach. Perhaps time to dabble in Python or Perl. http://www.sentex.net/~mwandel/jhead/ One of the features it mentions is: Fix date / time offsets in large batches of images -- Be seeing you, Sam. -- Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk --
Re: [Hampshire] Timestamps on photos
And it's in the ubuntu repositories - how did I manage to miss that!? I'll give that a go then thank you before I resort to scripting. Leo On 09/05/11 19:53, Samuel Penn wrote: Leoli...@fractal.me.uk wrote: Thank you both for your responses. I'll have to have another look around in digikam, as I didn't see functionality that would do this last time I looked. Either that or I'll go for the scripting approach. Perhaps time to dabble in Python or Perl. http://www.sentex.net/~mwandel/jhead/ One of the features it mentions is: Fix date / time offsets in large batches of images -- Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk --
Re: [Hampshire] Networking for Dummies
** Vic l...@beer.org.uk [2011-05-09 16:44]: If you connect the 'internet' side to the ADSL router you effectively put anything connected directly to the ADSL router into a sort of DMZ (sort of since it is still firewalled as normal, so not really a proper DMZ) with a separate IP address range that is firewalled off from the rest of the network by the cable router. Errr - I'm not so sure about that. Well it may not be the most technically elegant solution, but it would work quite happily. What is behind the cable router has the usual NAT blackhole, but what is hanging off the ADSL router is entirely unprotected from what is behind the cable router. So if the untrusted box is the one behind the cable router, all the trusted boxes are still subject to attack from the problem box. And that box has essentially unfettered Internet access, so it has no protection from PEBKAC either. You could, of course, have it the other way round - but that means reconfiguring everything currently on the network, means that those boxes will have to deal with double-NAT (which may or may not be a problem), and still offers no firewall filtering for the hostile box. The untrusted box is behind the ADSL router only, so has exactly the same protection as it currently has [1]. You then treat this internal network as if it was the internet and put another cable router in between the rest of the clients and the ADSL router. It is double-NAT, but I've run with that for a few years in the past when I didn't fully trust the ADSL router I had (and it lacked some features I needed too) and used a Smoothwall / IPCop box behind it. I have also worked with customers who have had double-NAT'd networks because their ISP provides a private network to their ADSL line and then uses it's own firewalls and proxies to give them access to the internet proper. Cable routers have exactly the same firewall / routing features as their ADSL siblings, so there is the same protection for this new network from the untrusted box as there would be from any machine on the internet. The main issues would be if the untrusted box needed access to one of the other machines for a network share or printer (which I am assuming not), or if the problem it had consumed masses of bandwidth (in which case you'd want to get it sorted quickly anyway!). As for the hassle of reconfiguring on the current network, I was assuming that the network re-jig would require that anyway. For a small network it isn't that much hassle to re-address machines, particularly if you are using DHCP (and local DNS if needed), but if you use the existing private addresses and give the new address structure to the untrusted box then there's little or nothing to change. iirc they were on separate ADSL lines before, so could easily be using different private addresses anyway. So I don't think I agree with you... Well there are technically better solutions, but it will work. Actually one solution that would work very nicely is a particular model of USR ADSL modem I worked with once. That had two separate ethernet interfaces that could run two totally separate networks off the same ADSL line, with as much or as little interaction as youn configured. You could also create this setup using a custom PC with twin NICs and a PCI ADSL card. ** end quote [Vic] [1] I'm making the assumption here that the standard setup is simply to have clients directly behind the ADSL router as used by the majority of default ISP configurations these days. -- Paul Tansom | Aptanet Ltd. | http://www.aptanet.com/ | 023 9238 0001 == Registered in England | Company No: 4905028 | Registered Office: Crawford House, Hambledon Road, Denmead, Waterlooville, Hants, PO7 6NU -- Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk --
