Tags: mosh

08/04/13

  12:25:00 pm, by The Dreamer   , 633 words  
Categories: Software, Computer, Networking

Apparently my dd-wrt does loopback now

A couple months ago I asked if mosh could be made to work if the mosh-server IP changes when roaming between networks.

Years ago, I used to have routers that did 'loopback', but haven't had ones capable of it for sometime...or so I thought. Though I hadn't really had a major need for it. Except perhaps for mosh.

mosh, MObile SHell, is an ssh replacement that supports roaming and intermittent connectivity. Since I do my IRC using irssi in screen, running all the time on a server at home. This makes staying connected to IRC on my laptop much nicer. I can close my laptop, and later open it and it'll still be connected to my screen session.

The problem was when I came home, I'd be unable to recover the connection correctly and the client goes into an unrecoverable state, so that even if I later use my laptop on an outside network the mosh session won't resume.

But, today I opened my laptop (and I just realized that I didn't do what I had intended to do) and I just minimized the window out the of the way...even though it probably wouldn't recover on Monday at work. But, the dock icon showed that something wanted my attention....probably mosh-client giving up? No. Well, my nick had come up a couple of times yesterday, but it shouldn't have known that....but not really thinking, I switch to the channel. And, it does. I switch around and its working. Wait...it shouldn't be though! :!:

So what changed? I do a tcpdump and see that it is connecting to my WAN IP and getting responses from my WAN IP....'loopback' never worked for me though....

:idea: Perhaps its 'loopback' of port forwards that has never worked....

I had moved irssi from box to dbox a while back. The router has two port forwards set related to this to box, a single port TCP forward and port range UDP forward.

But, because my other router is running stock firmware, it has a limited number of port forwards...so as I was migrating services to cbox (and using nginx to reverse proxy web services on other systems on my home network, where those that use a webserver are using apache, including local services...such as cacti on cbox and nagios on dbox), I decided that I would just make cbox the DMZ host...start running host based firewalls at home, especially on this host (it also uses an IP alias...kind of like how we do hosts behind the BigIP at work &#59;D )

So that means no port forward(s) for my dd-wrt router for WAN to dbox....so I guess the NAT allows 'loopback'ng in this case.

Wonder if the same applies to my other router.

The only problem this causes is that I had plans to replace routers. I actually have a new router to replace the current stock router....though I haven't got anything that really needs to speed upgrade to 802.11ac yet in the room where I using wireless bridging. I also had plans to replace my dd-wrt router, which had started getting unreliable which they seem to do after a while....though it seems to have helped after I deleted old traffic data....

Full story »

07/14/13

  05:58:00 pm, by The Dreamer   , 2452 words  
Categories: Software, Ubuntu, FreeBSD, CFEngine

Moving irssi

So, recently there was a 'long' 4th of July weekend....on account that I opted to take Friday (the 5th) off as well.

I kind of thought I would tackle a bunch of different projects this weekend, though I've pretty much shelved the idea of re-IP'ng my home network. Perhaps something to do when I get my configuration management better fleshed out.

What I decided was that it looks like its just one last thing on one of the two Ubuntu servers that I'm retiring. So, I figured I'd quickly move that and then go onto the next thing. In the end, I didn't get it completed until Monday night.

For background, some years back...after my return to IRC, I had initially gone with Chatzilla (being that Firefox was my standard browser), which later moved to xulrunner and Chatzilla so it was independent of my browser. Though it was kind of annoying having it running at work and at home, and somewhat confusing for co-workers that ran text based IRC clients in screen somewhere and ssh'd in, etc. Most people that did this, were doing irssi.

So, I initially built it from source and was running on my old RedHat 7.3 server, and that was usable. Later when I setup an Ubuntu box to replace that server (the hardware had previously been SuSE....acting as an internal router for ivs status tracking....) It evolved, in that I would start screen detached from rc.local....which was important since the system would see patches on a regular basis, requiring reboots....which is kind of a reason for switching to FreeBSD.

Over time, I would make little tweaks here and there, to this irssi setup. Like twirssi, doing ssl, and later bitlbee to integrate Facebook chat (came across some stuff that I should add now...)

And, incorporating other tweaks I come across online when there's some problem that becomes sufficient bothersome that I want to address. The one problem I haven't haven't been able to solve is keeping server/system messages confined to the one window. Namely keeping system CRAP going to the system window, and allow channel CRAP to show up in the channel windows....but instead I'll get system CRAP in whatever channel window is active. Which is annoying because its usually the work channel. Where it be just signal and no noise.

Anyways...

I had started to move things more than a month ago, in that I built irssi and bitlbee (including the cfengine3 promise for it...not really much config wise for cfengine to manage for irssi...though I envisioned promising that its running all the time, though irssi has generally been stable everywhere else that I've run it.

But, the I got distracted by other cfengine3 work. Even though things started to get pressing when twirssi stopped working, due to API 1.0 going away...so I had to update Net::Twitter and twirssi. Updating twirssi wasn't that hard to do, but Net::Twitter was a problem, so I opted to remove it and its dependencies and then installing it and its dependencies using CPAN.

I also made note to install net/p5-Net-Twitter from ports on dbox.

twirssi seems to be having other issues, which I had intended to investigate...perhaps after I move... But, that was like a month ago....

Full story »

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Now instead of subjecting some poor random forum to a long rambling thought, I will try to consolidate those things into this blog where they can be more easily ignored profess to be collected thoughts from my mind.

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