RE: semi-remote net
-Original Message- From: Rich Puhek [mailto:[EMAIL PROTECTED] Sent: Wednesday, July 09, 2003 2:38 PM To: Leonardo Boselli Cc: debian-isp@lists.debian.org Subject: Re: semi-remote net Leonardo Boselli wrote: I posted some weeks ago a question on satellite network ... i have not yet tested but i will do in next days, Now I have more information on the services required: not only a satellitenetwork, but the expansion plans for our department calla also for a lab in an old building. This building, althought still in the campus is about 600 m far from the next nearest network-wired building. In this bulding will be put three workstations. In this case the problem is not to have them in the same network that of the other ones, being on a different subnet is not a problem, but rather the fact that in that building there are no teleccommunication connections. Getting an optical cable in not an option since within three years that building could be abandoned. I thought about two options: one is a laser connection (but the area is subject to fog) and the other using two wi-fi 2.4 GHz NIC, coupled to two dish antennas . Anyone here has experiences and suggestions on this setup ? -- A couple of things I'd consider: 2) Are there existing copper cables to the building for providing phone service? If so, you may be able to do a home-grown DSL solution on the copper. Actually, that's a real good suggestion that's quite easy to implement. My home and office are located 3 blocks apart, and I lease a 'dry pair' from the phone company and run a private DSL circuit over it. I get 2.33 mb/s over the link, and the cost of the modems were $150 US each. I saved enough on DSL charges by not having to subscribe at both locations to more than pay for the modems. --dwh --- Dale W Hodge - [EMAIL PROTECTED] Vice Chairman Secretary - [EMAIL PROTECTED] Air Capital Linux User's Group (ACLUG) ---
RE: semi-remote net
-Original Message- From: Rich Puhek [mailto:[EMAIL PROTECTED] Sent: Wednesday, July 09, 2003 2:38 PM To: Leonardo Boselli Cc: [EMAIL PROTECTED] Subject: Re: semi-remote net Leonardo Boselli wrote: I posted some weeks ago a question on satellite network ... i have not yet tested but i will do in next days, Now I have more information on the services required: not only a satellitenetwork, but the expansion plans for our department calla also for a lab in an old building. This building, althought still in the campus is about 600 m far from the next nearest network-wired building. In this bulding will be put three workstations. In this case the problem is not to have them in the same network that of the other ones, being on a different subnet is not a problem, but rather the fact that in that building there are no teleccommunication connections. Getting an optical cable in not an option since within three years that building could be abandoned. I thought about two options: one is a laser connection (but the area is subject to fog) and the other using two wi-fi 2.4 GHz NIC, coupled to two dish antennas . Anyone here has experiences and suggestions on this setup ? -- A couple of things I'd consider: 2) Are there existing copper cables to the building for providing phone service? If so, you may be able to do a home-grown DSL solution on the copper. Actually, that's a real good suggestion that's quite easy to implement. My home and office are located 3 blocks apart, and I lease a 'dry pair' from the phone company and run a private DSL circuit over it. I get 2.33 mb/s over the link, and the cost of the modems were $150 US each. I saved enough on DSL charges by not having to subscribe at both locations to more than pay for the modems. --dwh --- Dale W Hodge - [EMAIL PROTECTED] Vice Chairman Secretary - [EMAIL PROTECTED] Air Capital Linux User's Group (ACLUG) --- -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
RE: Network monitor
I'll agree with others that nagios is a very useful tool. It provides a lot more tools for reporting than some of the other programs I tried. And since you can set up parent-child relationships between destinations, it wont give you a bunch of warnings for children unreachable if the parent goes down. While it is only in unstable, it easily backports to stable. I have .deb's available via anonymous ftp for anyone who want to try it on stable. Just drop me a note and I'll point you to the proper place. --dwh --- Dale W Hodge - [EMAIL PROTECTED] Vice Chairman Secretary - [EMAIL PROTECTED] Air Capital Linux User's Group (ACLUG) www.aclug.org --- -Original Message- From: Christian Lyra [mailto:[EMAIL PROTECTED] HI, I use to use nagios too. Great tool. but the url is wrong, the correct is www.nagios.org. On Thu, 1 May 2003, Crawford Rainwater wrote: Nagios (Netsaint is the prior version of it, in stable) will do it. I presume the servers are local, so lagging should not be an issue (can be for multiple sites with Nagios if not config'ed properly). Alerts can be emailed out as well as visual on the screen. Web based via Apache as well, love it personally. www.nagios.com to check out the screen shots and such. HTH.
RE: SpamAssassin Causing Server Startup Failure
-Original Message- From: Gene Grimm [mailto:[EMAIL PROTECTED]] During the past couple of days I have noticed log entries showing that spamassassin's daemon refused connections from spamc on our two mail servers. Today, our local mail server was so bogged down I was forced to reset it. When 'initd' got to spamassassin, the server just hung and would not continue the boot process. I waited for almost five minutes but it didn't time out or continue. I was forced to mount the drive in another system without local mail services (only nullmailer) and disable the /etc/rcX.d/S19spamassassin links for spamd. Just as a precaution, I disabled spamassassin on the remote server as well. I have not yet tried to simply turn off spamd in /etc/defaults/spamassassin but have one non-critical server I can try this in. Unfortunately, I don't quite know how to force a Debian server to stay in runlevel 1 during the boot process. If anyone knows why this was happening and/or how to fix it, I would be most appreciative. Hum... A similar thing happened to me today. The load got so high it brought my system to it's knees. I ended up forcing a reboot to fix it. I reset the config with -L (perform local tests only) -m10 (limit children to max of 10) -S (Stop check as soon as spam threshold is reached to improve performance). So far the load has dropped to near normal levels. I'm thinking the root problem is a network connectivity problem. I know it normally does some lookups and tries to connect to several spam databases. I've been having some network issues, so I suspect that's the problem here. Hope this helps some. --dwh --- Dale W Hodge - [EMAIL PROTECTED] Vice Chairman Secretary - [EMAIL PROTECTED] Air Capital Linux User's Group (ACLUG) --- -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
