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Re: Openvpn and Network mapping

by Levasseur, Kenneth

Do you need to route the entire network, or just access the NAS and other hosts? I think you could do something with SSH reverse tunneling, given you have a VPS. On the NAS: ssh -R <desired_port>:localhost:22 user@<vps_address> Then, once you've ssh'd into the VPS from anywhere else: ________________________________ From: Krichevsky, Nicholas Jacob via WLUG <wlug(a)lists.wlug.org> Sent: Sunday, February 3, 2019 1:42:35 AM To: Worcester Linux Users' Group General Discussion Cc: Krichevsky, Nicholas Jacob Subject: [WLUG] Openvpn and Network mapping So I've found myself in an unfortunate situation where I cannot port forward on my router. My solution to this was to setup an openvpn tunnel on my VPS that would allow me to access my LAN via a NAS that I keep online in my apartment. (In other words, my laptop would connect to my VPS, which would route to my apartment via my NAS, and thus expose the LAN). The big problem is that the network uses 192.168.1.0/24, and given that I cannot edit any router settings, I cannot change this. If I were to simply expose this subnet via openvpn, I wouldn't be able to access any other 192.168.1.0/24 address if I were connect to the VPN. My plan was to try and use some iptables magic to map 10.24.0.0/24 to 192.168.1.0. Luckily, this works, thanks to the NETMAP extension (iptables -A PREROUTING -t nat -d 10.24.0.0/24 -j NETMAP --to 192.168.1.0/24, for the curious). However, the only way I can make this work is if I add the NAS as a gateway on all of the machines I want to connect to on my LAN, which is a bit sad (ip route add 192.168.255.0/24 via 192.168.1.69) . Is there some way I can make this a bit more seamless? This isn't my least favorite solution, as I don't need to run the openvpn client on every host, but it isn't much better...

Feb. 3, 2019

Openvpn and Network mapping

by Krichevsky, Nicholas Jacob

So I've found myself in an unfortunate situation where I cannot port forward on my router. My solution to this was to setup an openvpn tunnel on my VPS that would allow me to access my LAN via a NAS that I keep online in my apartment. (In other words, my laptop would connect to my VPS, which would route to my apartment via my NAS, and thus expose the LAN). The big problem is that the network uses 192.168.1.0/24, and given that I cannot edit any router settings, I cannot change this. If I were to simply expose this subnet via openvpn, I wouldn't be able to access any other 192.168.1.0/24 address if I were connect to the VPN. My plan was to try and use some iptables magic to map 10.24.0.0/24 to 192.168.1.0. Luckily, this works, thanks to the NETMAP extension (iptables -A PREROUTING -t nat -d 10.24.0.0/24 -j NETMAP --to 192.168.1.0/24, for the curious). However, the only way I can make this work is if I add the NAS as a gateway on all of the machines I want to connect to on my LAN, which is a bit sad (ip route add 192.168.255.0/24 via 192.168.1.69) . Is there some way I can make this a bit more seamless? This isn't my least favorite solution, as I don't need to run the openvpn client on every host, but it isn't much better...

Feb. 3, 2019

Re: struggling w/ reliable printers on CUPS in small office

by Bradley Noyes

> On Jan 24, 2019, at 21:42, Kevin W Stratton via WLUG <wlug(a)lists.wlug.org> wrote: > > I have had this problem with a couple of older distributions of linux. The problem now does not occur with the same network printer that I have had for a long time. I have a single user setup, so I do not know if is relevant information. Perhaps one machine on the network has a buggy version of CUPS? > This is entirely possible. Since you mentioned it, this particular box is running ubuntu 14.04, which is quite old at this point. It didn’t even occur to me to check this until you mentioned it > Doing a quick google search I found: > > https://bbs.archlinux.org/viewtopic.php?id=202022 <https://bbs.archlinux.org/viewtopic.php?id=202022> > pypi suggests considering changing the ErrorPolicy for a similar problem. I have never done this, so good luck. > It turns out this option isn’t even available in the version of CUPS i’m running. Looks like i’ll be trying to upgrade my ubuntu box this weekend and crossing my fingers that it solves the CUPS problems and doesn’t break anything else. Thanks! - brad > On 1/24/19 6:17 PM, Aljerin Butler,Jr. via WLUG wrote: >> Try my website here <http://customdesktopsolutions.mywebcommunity.org/index.php/linux-open-sourc…> (especially HPLIP) at the compatibility links. >> (http://customdesktopsolutions.mywebcommunity.org/index.php/linux-open-sourc… <http://customdesktopsolutions.mywebcommunity.org/index.php/linux-open-sourc…>) >> >> Al Butler >> >> On Wednesday, January 23, 2019, 11:12:51 PM EST, Krichevsky, Nicholas Jacob via WLUG<wlug(a)lists.wlug.org> <mailto:wlug@lists.wlug.org> wrote: >> >> >> I have an HP Officejet 8600 that only gets "paused" if I unplug it, in my testing. YMMV >> >> Get Outlook for Android <https://aka.ms/ghei36> >> From: Bradley Noyes via WLUG <wlug(a)lists.wlug.org> <mailto:wlug@lists.wlug.org> >> Sent: Wednesday, January 23, 2019 11:07:29 AM >> To: Worcester Linux Users' Group General Discussion >> Cc: Bradley Noyes >> Subject: [WLUG] struggling w/ reliable printers on CUPS in small office >> >> WLug-gers, >> >> tl;dr: Can someone recommend a printer (or printer brand) that is reliable for printing via CUPS? >> >> I’m struggling w/ printers in a small office and i've struggled to get any kind of guidance on-line. The volume of pages printed at the office is probably around 100 pages a day and there are 4 printers — all HPs and all consumer grade — each printer has its purpose, e.g. there's an 11x17 printer, one color laser, one BW laster, one color inkjet. The office is all iMACs, which connect to a Linux CUPS server. The iMacs were networking directly w/ the printers, but i added the CUPS server to try to mitigate the poor reliability with only marginal results. Routinely printers become “paused” in CUPS so i need to go in and ‘unpause’ them, also some printers just fall of the network entirely. Inevitably the only printer that works most of the time is the ink-jet which is a lot more expensive to re-fill. >> >> I’m looking for a reliable solution. If anyone has a recomendation that’d be great! >> >> Thanks, >> — Brad >> _______________________________________________ >> WLUG mailing list -- wlug(a)lists.wlug.org <mailto:wlug@lists.wlug.org> >> To unsubscribe send an email to wlug-leave(a)lists.wlug.org <mailto:wlug-leave@lists.wlug.org> >> _______________________________________________ >> WLUG mailing list -- wlug(a)lists.wlug.org <mailto:wlug@lists.wlug.org> >> To unsubscribe send an email to wlug-leave(a)lists.wlug.org <mailto:wlug-leave@lists.wlug.org> >> >> >> _______________________________________________ >> WLUG mailing list -- wlug(a)lists.wlug.org <mailto:wlug@lists.wlug.org> >> To unsubscribe send an email to wlug-leave(a)lists.wlug.org <mailto:wlug-leave@lists.wlug.org> > _______________________________________________ > WLUG mailing list -- wlug(a)lists.wlug.org > To unsubscribe send an email to wlug-leave(a)lists.wlug.org

Jan. 25, 2019

Re: struggling w/ reliable printers on CUPS in small office

by John Stoffel

Bradley> tl;dr: Can someone recommend a printer (or printer brand) Bradley> that is reliable for printing via CUPS? In general, CUPS is pretty darn reliable. But can you post some logs from when the printer goes offline? Bradley> I’m struggling w/ printers in a small office and i've Bradley> struggled to get any kind of guidance on-line. The volume of Bradley> pages printed at the office is probably around 100 pages a Bradley> day and there are 4 printers — all HPs and all consumer grade Bradley> — each printer has its purpose, e.g. there's an 11x17 Bradley> printer, one color laser, one BW laster, one color Bradley> inkjet. The office is all iMACs, which connect to a Linux Bradley> CUPS server. The iMacs were networking directly w/ the Bradley> printers, but i added the CUPS server to try to mitigate the Bradley> poor reliability with only marginal results. So this is a key issue to me, if printing from the iMACs (which version of MacOS?) was un-reliable, then it points to a problem somewhere else. As others have said, maybe the power is bad? But have you checked your network as well? Do you have a switch or two which are dropping packets randomly? Yes, TCP should handle stuff like this, but maybe it's a wierd corruption issue somewhere? Bradley> Routinely printers become “paused” in CUPS so i need to go in Bradley> and ‘unpause’ them, also some printers just fall of the Bradley> network entirely. Inevitably the only printer that works most Bradley> of the time is the ink-jet which is a lot more expensive to Bradley> re-fill. Can you move your most used laser to the same network port/cable as the inkjet and see if that improves reliability? Bradley> I’m looking for a reliable solution. If anyone has a Bradley> recomendation that’d be great! I've got a Brother MFC-8860DN laser printer which has lasted me over 10+ years at home and been quite reliable. The only problem is that it's PostScript implementation is now getting long in the tooth. Best damn $400 printer I've ever gotten. John

Jan. 25, 2019

Re: struggling w/ reliable printers on CUPS in small office

by Kevin W Stratton

Unless the UPS is very beefy, I wold not do this with laser printers. When My laser printer is on the battery side of my UPS, it resets the UPS when I start a print. I think it has something to due with a current inrush for a heater that has to run before printing. Of course newer printers may be better about this. On 1/25/19 12:58 AM, E Johnson via WLUG wrote: > One thing that occurred to me: > > I had a problem like this rather frequently in the last apartment. > It had electricity issues: the ancient refrig was on same circuit as > half of the apartment --including the elex outlets I had to use for > the computers & printer, etc. The lights used to dim slightly whenever > the refrig compressor came on. I used to hear the printer resetting > itself several times/week. The printer and CUPS often disagreed -- > quit working together. This is a decent HP Deskjet, on the compatible > list. But printers seem to be sensitive beasts. > > Restart CUPS usually fixed the problem, altho occasionally I would > have to completely disconnect the printer, power, data cable & all, > then wait a few min before hooking it all back up, then restart CUPS. > > Now here at the new place since last May, there are no fluctuating > elex issues, and no CUPS - printer issues either. > > May I suggest, if you don't have already: plug all the printers into a > decent UPS (rather than zip strip or whatever), which should keep the > elex supply steady for your printers. > > I have a spare UPS here that I am not using. I bought it several years > ago for just this reason, but it works only with grounded outlets > which we did not have at the old place (they were "fake" grounded). I > would gladly contribute this UPS if you would like to see if it helps. > I am in Worcester. > > Liz J > >> >> On Wednesday, January 23, 2019, 11:12:51 PM EST, Krichevsky, >> Nicholas Jacob via WLUG <wlug(a)lists.wlug.org> >> <mailto:wlug@lists.wlug.org> wrote: >> >> >> I have an HP Officejet 8600 that only gets "paused" if I unplug >> it, in my testing. YMMV >> >> ------------------------------------------------------------------------ >> *From:* Bradley Noyes via WLUG <wlug(a)lists.wlug.org> >> <mailto:wlug@lists.wlug.org> >> *Sent:* Wednesday, January 23, 2019 11:07:29 AM >> *To:* Worcester Linux Users' Group General Discussion >> *Cc:* Bradley Noyes >> *Subject:* [WLUG] struggling w/ reliable printers on CUPS in >> small office >> WLug-gers, >> >> tl;dr: Can someone recommend a printer (or printer brand) that is >> reliable for printing via CUPS? >> >> I’m struggling w/ printers in a small office and i've struggled >> to get any kind of guidance on-line. The volume of pages printed >> at the office is probably around 100 pages a day and there are 4 >> printers — all HPs and all consumer grade — each printer has its >> purpose, e.g. there's an 11x17 printer, one color laser, one BW >> laster, one color inkjet. The office is all iMACs, which connect >> to a Linux CUPS server. The iMacs were networking directly w/ the >> printers, but i added the CUPS server to try to mitigate the poor >> reliability with only marginal results. Routinely printers become >> “paused” in CUPS so i need to go in and ‘unpause’ them, also some >> printers just fall of the network entirely. Inevitably the only >> printer that works most of the time is the ink-jet which is a lot >> more expensive to re-fill. >> >> I’m looking for a reliable solution. If anyone has a >> recomendation that’d be great! >> >> Thanks, >> — Brad > > > _______________________________________________ > WLUG mailing list -- wlug(a)lists.wlug.org > To unsubscribe send an email to wlug-leave(a)lists.wlug.org

Jan. 25, 2019

Re: struggling w/ reliable printers on CUPS in small office

by E Johnson

One thing that occurred to me: I had a problem like this rather frequently in the last apartment. It had electricity issues: the ancient refrig was on same circuit as half of the apartment --including the elex outlets I had to use for the computers & printer, etc. The lights used to dim slightly whenever the refrig compressor came on. I used to hear the printer resetting itself several times/week. The printer and CUPS often disagreed -- quit working together. This is a decent HP Deskjet, on the compatible list. But printers seem to be sensitive beasts. Restart CUPS usually fixed the problem, altho occasionally I would have to completely disconnect the printer, power, data cable & all, then wait a few min before hooking it all back up, then restart CUPS. Now here at the new place since last May, there are no fluctuating elex issues, and no CUPS - printer issues either. May I suggest, if you don't have already: plug all the printers into a decent UPS (rather than zip strip or whatever), which should keep the elex supply steady for your printers. I have a spare UPS here that I am not using. I bought it several years ago for just this reason, but it works only with grounded outlets which we did not have at the old place (they were "fake" grounded). I would gladly contribute this UPS if you would like to see if it helps. I am in Worcester. Liz J > > On Wednesday, January 23, 2019, 11:12:51 PM EST, Krichevsky, Nicholas > Jacob via WLUG <wlug(a)lists.wlug.org> <wlug(a)lists.wlug.org> wrote: > > > I have an HP Officejet 8600 that only gets "paused" if I unplug it, in my > testing. YMMV > > ------------------------------ > *From:* Bradley Noyes via WLUG <wlug(a)lists.wlug.org> <wlug(a)lists.wlug.org> > *Sent:* Wednesday, January 23, 2019 11:07:29 AM > *To:* Worcester Linux Users' Group General Discussion > *Cc:* Bradley Noyes > *Subject:* [WLUG] struggling w/ reliable printers on CUPS in small office > > WLug-gers, > > tl;dr: Can someone recommend a printer (or printer brand) that is reliable > for printing via CUPS? > > I’m struggling w/ printers in a small office and i've struggled to get any > kind of guidance on-line. The volume of pages printed at the office is > probably around 100 pages a day and there are 4 printers — all HPs and all > consumer grade — each printer has its purpose, e.g. there's an 11x17 > printer, one color laser, one BW laster, one color inkjet. The office is > all iMACs, which connect to a Linux CUPS server. The iMacs were networking > directly w/ the printers, but i added the CUPS server to try to mitigate > the poor reliability with only marginal results. Routinely printers become > “paused” in CUPS so i need to go in and ‘unpause’ them, also some printers > just fall of the network entirely. Inevitably the only printer that works > most of the time is the ink-jet which is a lot more expensive to re-fill. > > I’m looking for a reliable solution. If anyone has a recomendation that’d > be great! > > Thanks, > — Brad > >

Jan. 25, 2019

Re: struggling w/ reliable printers on CUPS in small office

by Kevin W Stratton

I have had this problem with a couple of older distributions of linux. The problem now does not occur with the same network printer that I have had for a long time. I have a single user setup, so I do not know if is relevant information. Perhaps one machine on the network has a buggy version of CUPS? Doing a quick google search I found: https://bbs.archlinux.org/viewtopic.php?id=202022 pypi suggests considering changing the ErrorPolicy for a similar problem. I have never done this, so good luck. On 1/24/19 6:17 PM, Aljerin Butler,Jr. via WLUG wrote: > Try my website here > <http://customdesktopsolutions.mywebcommunity.org/index.php/linux-open-sourc…> > (especially HPLIP) at the compatibility links. > (http://customdesktopsolutions.mywebcommunity.org/index.php/linux-open-sourc…) > > Al Butler > > On Wednesday, January 23, 2019, 11:12:51 PM EST, Krichevsky, Nicholas > Jacob via WLUG <wlug(a)lists.wlug.org> wrote: > > > I have an HP Officejet 8600 that only gets "paused" if I unplug it, in > my testing. YMMV > > Get Outlook for Android <https://aka.ms/ghei36> > > ------------------------------------------------------------------------ > *From:* Bradley Noyes via WLUG <wlug(a)lists.wlug.org> > *Sent:* Wednesday, January 23, 2019 11:07:29 AM > *To:* Worcester Linux Users' Group General Discussion > *Cc:* Bradley Noyes > *Subject:* [WLUG] struggling w/ reliable printers on CUPS in small office > WLug-gers, > > tl;dr: Can someone recommend a printer (or printer brand) that is > reliable for printing via CUPS? > > I’m struggling w/ printers in a small office and i've struggled to get > any kind of guidance on-line. The volume of pages printed at the > office is probably around 100 pages a day and there are 4 printers — > all HPs and all consumer grade — each printer has its purpose, e.g. > there's an 11x17 printer, one color laser, one BW laster, one color > inkjet. The office is all iMACs, which connect to a Linux CUPS server. > The iMacs were networking directly w/ the printers, but i added the > CUPS server to try to mitigate the poor reliability with only marginal > results. Routinely printers become “paused” in CUPS so i need to go in > and ‘unpause’ them, also some printers just fall of the network > entirely. Inevitably the only printer that works most of the time is > the ink-jet which is a lot more expensive to re-fill. > > I’m looking for a reliable solution. If anyone has a recomendation > that’d be great! > > Thanks, > — Brad > _______________________________________________ > WLUG mailing list -- wlug(a)lists.wlug.org > To unsubscribe send an email to wlug-leave(a)lists.wlug.org > _______________________________________________ > WLUG mailing list -- wlug(a)lists.wlug.org <mailto:wlug@lists.wlug.org> > To unsubscribe send an email to wlug-leave(a)lists.wlug.org > <mailto:wlug-leave@lists.wlug.org> > > _______________________________________________ > WLUG mailing list -- wlug(a)lists.wlug.org > To unsubscribe send an email to wlug-leave(a)lists.wlug.org

Jan. 25, 2019

Re: struggling w/ reliable printers on CUPS in small office

by Aljerin Butler,Jr.

Try my website here (especially HPLIP) at the compatibility links.(http://customdesktopsolutions.mywebcommunity.org/index.php/linux-ope… Al Butler On Wednesday, January 23, 2019, 11:12:51 PM EST, Krichevsky, Nicholas Jacob via WLUG <wlug(a)lists.wlug.org> wrote: I have an HP Officejet 8600 that only gets "paused" if I unplug it, in my testing. YMMV Get Outlook for Android From: Bradley Noyes via WLUG <wlug(a)lists.wlug.org> Sent: Wednesday, January 23, 2019 11:07:29 AM To: Worcester Linux Users' Group General Discussion Cc: Bradley Noyes Subject: [WLUG] struggling w/ reliable printers on CUPS in small office WLug-gers, tl;dr: Can someone recommend a printer (or printer brand) that is reliable for printing via CUPS? I’m struggling w/ printers in a small office and i've struggled to get any kind of guidance on-line. The volume of pages printed at the office is probably around 100 pages a day and there are 4 printers — all HPs and all consumer grade — each printer has its purpose, e.g. there's an 11x17 printer, one color laser, one BW laster, one color inkjet. The office is all iMACs, which connect to a Linux CUPS server. The iMacs were networking directly w/ the printers, but i added the CUPS server to try to mitigate the poor reliability with only marginal results. Routinely printers become “paused” in CUPS so i need to go in and ‘unpause’ them, also some printers just fall of the network entirely. Inevitably the only printer that works most of the time is the ink-jet which is a lot more expensive to re-fill. I’m looking for a reliable solution. If anyone has a recomendation that’d be great! Thanks, — Brad _______________________________________________ WLUG mailing list -- wlug(a)lists.wlug.org To unsubscribe send an email to wlug-leave(a)lists.wlug.org _______________________________________________ WLUG mailing list -- wlug(a)lists.wlug.org To unsubscribe send an email to wlug-leave(a)lists.wlug.org

Jan. 24, 2019

Re: struggling w/ reliable printers on CUPS in small office

by Krichevsky, Nicholas Jacob

I have an HP Officejet 8600 that only gets "paused" if I unplug it, in my testing. YMMV Get Outlook for Android<https://aka.ms/ghei36> ________________________________ From: Bradley Noyes via WLUG <wlug(a)lists.wlug.org> Sent: Wednesday, January 23, 2019 11:07:29 AM To: Worcester Linux Users' Group General Discussion Cc: Bradley Noyes Subject: [WLUG] struggling w/ reliable printers on CUPS in small office WLug-gers, tl;dr: Can someone recommend a printer (or printer brand) that is reliable for printing via CUPS? I’m struggling w/ printers in a small office and i've struggled to get any kind of guidance on-line. The volume of pages printed at the office is probably around 100 pages a day and there are 4 printers — all HPs and all consumer grade — each printer has its purpose, e.g. there's an 11x17 printer, one color laser, one BW laster, one color inkjet. The office is all iMACs, which connect to a Linux CUPS server. The iMacs were networking directly w/ the printers, but i added the CUPS server to try to mitigate the poor reliability with only marginal results. Routinely printers become “paused” in CUPS so i need to go in and ‘unpause’ them, also some printers just fall of the network entirely. Inevitably the only printer that works most of the time is the ink-jet which is a lot more expensive to re-fill. I’m looking for a reliable solution. If anyone has a recomendation that’d be great! Thanks, — Brad _______________________________________________ WLUG mailing list -- wlug(a)lists.wlug.org To unsubscribe send an email to wlug-leave(a)lists.wlug.org

Jan. 24, 2019

struggling w/ reliable printers on CUPS in small office

by Bradley Noyes

WLug-gers, tl;dr: Can someone recommend a printer (or printer brand) that is reliable for printing via CUPS? I’m struggling w/ printers in a small office and i've struggled to get any kind of guidance on-line. The volume of pages printed at the office is probably around 100 pages a day and there are 4 printers — all HPs and all consumer grade — each printer has its purpose, e.g. there's an 11x17 printer, one color laser, one BW laster, one color inkjet. The office is all iMACs, which connect to a Linux CUPS server. The iMacs were networking directly w/ the printers, but i added the CUPS server to try to mitigate the poor reliability with only marginal results. Routinely printers become “paused” in CUPS so i need to go in and ‘unpause’ them, also some printers just fall of the network entirely. Inevitably the only printer that works most of the time is the ink-jet which is a lot more expensive to re-fill. I’m looking for a reliable solution. If anyone has a recomendation that’d be great! Thanks, — Brad

Jan. 23, 2019