main February 2002

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53 participants
134 discussions

Re: [Alug] port forwarding
by MJ Ray 11 Feb '02

11 Feb '02

D: > Some servers are a reseller style system, so your not in control of all the > users. This is the ONLY way to do it and it will stop the network being used > for spam It is not the only way, even if you write it in capitals. You provide documentation on how to send email (ie the relay's details) and if they do anything else, a polite REJECT from the firewall should help them along. That is (IMO) the best way to do it. Redirect is a poor substitute for instructions. Redirect will work in many (most?) cases, but it will confuse the clients in others. Don't mistake it for a perfect solution. I'm sure some of us have tunnelled around such draconian blocks when we needed to. Please don't think that that alone will stop the network being used for spam. If customers can send email from web scripts, one of them will put a buggy script up and a spammer will use it as a relay. Unless you do something a bit cleverer on the server to monitor it, you'll not be able to block it. You should also block port 25 incoming apart from your mail server, else you'll be used as a two-step relay and the official mail server will be dropped into the blackholes too. -- MJR

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Re: [Alug] port forwarding
by MJ Ray 11 Feb '02

11 Feb '02

D: > I want to FORCE users/servers on the network to redirect outgoing data sent > on port 25 to another server (Internal mail server) That's a bit overbearing of you. If you really must, block port 25 at the firewall apart from to your relay mail server. This forces the clients to acknowledge that there is One True Email Relay for them. You can do "clever" stuff with catching port 25 and using an iptables redirect, as freeserve appear to, but why confuse any clients? Just chop their bits off if they attempt to do something that they should not. -- MJR

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march meeting
by Syd Hancock 10 Feb '02

10 Feb '02

Sorry everyone, I had volunteered to hold the march meeting at my place but due to varioius difficult circumstances I willhave to cancel. Best wishes Syd

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Re: [Alug] New member
by Jenny_Hopkins＠toby-churchill.com 10 Feb '02

10 Feb '02

Eric Sellin wrote: >My first question: do you guys ever meet in Ipswich? Hi Eric, welcome. Find a venue, set a date, and we'll be there! Jenny.

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Secure Firewalling, Runlevel 0 (?!)
by James 09 Feb '02

09 Feb '02

Here is an interesting article of running firewalls with the machine "halted" (runlevel 0) for extra security <*tilt*> is a first reaction. But it _is_ an intriguing concept... Article here: http://www.samag.com/print/documentID=20294 Slashdot thread here: http://slashdot.org/articles/02/02/08/1624217.shtml?tid=172 Anyone have any personal experiences of such trickery to relate? --James

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Re: [Alug] Re: clug Secure Firewalling, Runlevel 0 (?!)
by MJ Ray 09 Feb '02

09 Feb '02

Jon: > Get the terminology right. Runlevel 0 is known as single user mode > and it is not in anyway halted. [...] 0 is halt. 1 is single-user. At least in LSB-ready systems. Much cooler is to run the firewall without an IP address, but then you need console access too. -- MJR

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Music Sequencers in Linux
by Ricardo Campos 09 Feb '02

09 Feb '02

I hope someone can help me with this. I'm now on the last bits of utterly replacing Windows, and am beginning to make music again on my box. Specifically, though, I need to do this: I have some music on tape that I did years ago. It's recorded in stereo, and in fact, there are lots of stereo effects that I wish to keep. I can record it using Grecord into WAV format (my box can handle it), but I would like to mix in some other samples too. Therefore I need a sequencer that can handle LARGE wav files AND retain the stereo information, and play other samples on top (vocals)... THEN it needs to mixdown the result into wav again... Soundtracker is out, as it doesn't retain the stereo settings. I may be buying a MIDI keyboard sometime soon, so I'm looking at Jazz++. Any thoughts? Ricardo _______________________________________________ "There are several codes, and I know several of them." -Mr. Precise. http://www.rscampos.net Check my online diary out: http://www.rscampos.net/blog.html -- Get your free email from www.linuxmail.org Powered by Outblaze

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Re: [Alug] pipes?
by david casal 09 Feb '02

09 Feb '02

On Thu, 7 Feb 2002, Brett Parker - Tech Support wrote: > erm - why not: > command1 | command2 | command3 The data stream needs to be continuous. One is a simulation package (swarm.org), the other a visual programming music thing (pure-data.org). I need consistent data out of PD, into swarm, out of swarm and back to PD. > or am I not getting the point here? No, just a *nix-peasant asking vague questions... Cheers, DC david casal --0+ --- d.casal(a)uea.ac.uk --9+ --- www.ariada.uea.ac.uk/~dcasal --)+

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Re: [Alug] Isdn adaptors
by Ricardo Campos 09 Feb '02

09 Feb '02

>I had an external one > which meant it was fairly easy to setup as it just looks like a normal > modem. However, do remember that serial ports only allow 115kbps rather than the 128kbps that you expect on 2 ISDN lines. That's one thing to consider in choosing between external or pci. (I used to work for BT Speedway! blech! and indeed they *are* rebadged fritz cards) ;) Ricardo _______________________________________________ "There are several codes, and I know several of them." -Mr. Precise. http://www.rscampos.net Check my online diary out: http://www.rscampos.net/blog.html -- Get your free email from www.linuxmail.org Powered by Outblaze

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Re: [Alug] New member
by Edenyard 09 Feb '02

09 Feb '02

Welcome to the group, Eric! On Fri, 08 Feb 2002 14:18:50 +0000, MJ Ray wrote: > We've been to Woodbridge and Martlesham in the past. We might be able to > use Martlesham again in the future, when David's back from uni, but a venue > actually in Ipswich would be easier to get to. If you have the power to > arrange such a thing, let us know! > I'd just like to register my vote for meetings in/near Martlesham - since that's where I am!! Gerald.

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