Re: [lopsa-tech] tcp/ip overhead

2012-02-28 Thread Dan Foster
Hot Diggety! Doug Hughes was rumored to have written: > > Unless the firewall is actively blocking ICMP, I wouldn't worry too > much about MTU. The Path MTU discovery should take care of all of > that. Well, the catch is, *any* point between sender and recipient host that blocks the certain ICMP

Re: [lopsa-tech] A strange file related to ssh

2012-01-26 Thread Dan Foster
Hot Diggety! Tom Perrine was rumored to have written: > On Tue, Jan 24, 2012 at 12:08 PM, Dan Schlitt wrote: > > > > Thanks for all the suggestions. Reinstalling didn't seem to change > > anything, To take care of the file I just pointed it to /devnull. > > Did you do a full system re-install, or

Re: [lopsa-tech] Password management

2011-11-07 Thread Dan Foster
Hot Diggety! Edward Ned Harvey was rumored to have written: > Whenever you want to become root, you run: sudo su - Pardon the digression; just wanted to point out that sudo has (for the last few years) supported sudo -i, which has almost completely negated the need for sudo su - here. To date,

Re: [lopsa-tech] IPv6 router for home?

2011-11-02 Thread Dan Foster
For those who goes this route with currently shipping devices and firmware revs, please reply back to the list with whatever device you end up going with. And also any good/bad experiences and the 'coulda be better...' parts, after you've had a little time to play with it. Very handy information.

Re: [lopsa-tech] scalability dos and don'ts for startups

2011-10-31 Thread Dan Foster
Taking this one step further: Scalability dos and don'ts for established companies: 1. Thou shalt not simply think of bigger and beefier servers just to run something faster. The bigger they are, the harder they fall. Factorize! Break out apps! Make them

Re: [lopsa-tech] VPN remote concentrators

2011-10-22 Thread Dan Foster
Hot Diggety! Doug Hughes was rumored to have written: > What are people using these days for VPN concentrators? seems like > Cisco 3000 series is still out there in force, and very inexpensively > available on the aftermarket. Even the 3060 (which was probably state > of the art for 2004). vpnc and

Re: [lopsa-tech] Internet cop

2011-10-13 Thread Dan Foster
Hot Diggety! Jeremy Charles was rumored to have written: >I’ve been directed to figure out how to decrease the amount of >Internet capacity that is being used by employees to do things that >are not work-related. The examples I’ve been given are Netflix and >other streaming media.

Re: [lopsa-tech] amount of swap

2011-04-20 Thread Dan Foster
Hot Diggety! Michael C Tiernan was rumored to have written: > - Original Message - > > From: "Adam Tauno Williams" > > > Most recommendations I see [...] > > The thing I keep seeing is stuff that discusses about how much the > system "*needs*". There's lots of sides about how you can liv

Re: [lopsa-tech] Odd question regarding Zabbix/Nagios and bandwidth tracking

2011-04-20 Thread Dan Foster
Thank you *very* much to Ted, Tracy, Doug, Adam, and Paul Very interesting food for thought; I'm further evaluating everybody's suggestions. I am absolutely confident that the two former university buddies will be delighted (as I am!). Thanks again! -Dan

Re: [lopsa-tech] amount of swap

2011-04-20 Thread Dan Foster
Swap is the computing equivalent of a bank's overdraft feature. :-) In other words, overdrafting is no problem as long as you can quickly pay it back. If you can't and have gotten too deep into it (with actually needing swap), well, then, life just suddenly became extremely exciting. :-) Non-seq

[lopsa-tech] Odd question regarding Zabbix/Nagios and bandwidth tracking

2011-04-18 Thread Dan Foster
Friends from university days asked me an intriguing question the other day. How would you configure either Nagios or Zabbix to monitor how much data has flowed through a particular Ethernet interface for, say, the past 31 days? I guess the idea is to set an alarm if they start to approach 85% (or

Re: [lopsa-tech] Linux bonding and arp request

2011-04-18 Thread Dan Foster
Hot Diggety! Yves Dorfsman was rumored to have written: > > Anybody with a lot of experience with Linux bonding setup in arp > request mode? Sadly, I have to disclaim up front that no, I do not. But I do have a few comments. :) > -What is a reasonable value for arp_interval? You obviously want

Re: [lopsa-tech] Good AS400 Training Materials/CBTS

2011-04-18 Thread Dan Foster
One good all-around book I'd highly recommend is Ernie Malaga (et al.)'s 'AS/400 Primer' book. I had to dig it out of storage (bought it for my own refresher) to discover the title and author, so it took a while. It's a superb introduction to the AS/400 platform and also covers some basics of CL p

Re: [lopsa-tech] IPv6 and Firewall traversal

2011-03-30 Thread Dan Foster
Hot Diggety! Dan Foster was rumored to have written: > > I'm still undecided, though with reasonable change control and cross > verification procedures, I think I'd probably find it to be an > acceptable risk for use of IPv6 NAT given needs. *sigh* I _meant_ to say: IP

Re: [lopsa-tech] IPv6 and Firewall traversal

2011-03-30 Thread Dan Foster
Hot Diggety! Derek J. Balling was rumored to have written: > > > answering the question: WOULD it have ever forwarded if you had > > routable IPs behind it? Did RFC1918 ever really save you? And if > > not, why hold onto it? > > If I never had a specific rule "forward a connection inward to > $PR

Re: [lopsa-tech] Good AS400 Training Materials/CBTS

2011-03-27 Thread Dan Foster
Hot Diggety! Keith Weitz was rumored to have written: > > I've been told to throw on another hat at work and need to learn some > AS400 administration for a hosted client. Does anyone know if any > good CBT's out there for an AS400 rookie or a good beginner's book? Hi Keith -- Haven't b

Re: [lopsa-tech] Fiber or copper between Switches

2010-11-29 Thread Dan Foster
Hot Diggety! Luke S Crawford was rumored to have written: > > Now, for the reasons other people on the list have stated, I do prefer > fiber for long runs, or through electrically uncertain areas, but my > personal experience? copper usually wins in terms of reliability, for > the two above reaso

Re: [lopsa-tech] awkward mac question

2010-11-28 Thread Dan Foster
Hot Diggety! Tom Perrine was rumored to have written: > > The Migration Assistant is on the "install disk" that came with your > new Macbook. It will run on older versions of MacOS and on Intel or PPC. > > Just insert the new disk in the old laptop and find the Migration > Assistant, I think it is

Re: [lopsa-tech] awkward mac question

2010-11-28 Thread Dan Foster
Hot Diggety! Andrew Hume was rumored to have written: >i have a 10.4.x macbook with stuff on it. Two key questions: 1) Is it at the latest 10.4 rev? (10.4.11, IIRC?) If not, update it. 1a) If it's PPC, the 10.4.x-to-10.4.11 combo updater is at: http://support.apple.com/downloads/Mac_OS_X_10

Re: [lopsa-tech] What is the IPv6 equivalent to an octet?

2010-10-28 Thread Dan Foster
Hot Diggety! Jeremy Charles was rumored to have written: > >In IPv4: > >216.165.132.0 > >...the digits between a pair of dots are called an octet. Yessir. >In IPv6: > >2620:0072:::::: > >...what do we call the digits between a pair of colons?