Article View: comp.os.linux.networking
Article #548Re: Sendmail Delivery Options
From: Peter McDermott
Date: Tue, 10 Aug 1999 00:00
Date: Tue, 10 Aug 1999 00:00
36 lines
2539 bytes
2539 bytes
In demon.ip.support.unix Paul Black <paul@canix.co.uk> wrote: > Peter McDermott <peter@petermc.demon.co.uk> wrote: >> Is it essential to firewall my dns? It's not a service >> I would have thought likely to be accessed by outside >> domains? > The firewall isn't to protect DNS, it's to prevent access by your > internal machine/network. The reason I do it is to speed things up > when I'm not connected to the Internet. If DNS is running all the > time, some applications pause while a DNS lookup times out. By > using the following two commands: Actually, I'd reached the conclusion today that it's this time out that seems to be causing many of my problems. Another example that I'm finding, is in trying to use wwwoffle as a web-cache. If I request a page directly, it gets fetched without any ado. If I try to use wwwoffle, I get a message telling me that it couldnt find an authoritative server for the host (or something similar.) Time to look a bit more closely at my dns setup, I think. Actually, it's probably time I just dumped this nasty Suse distro, and switched to something a little nicer. > /sbin/ipchains -D input -j REJECT -p udp -d gammon domain > /sbin/ipchains -I input -j REJECT -p udp -d gammon domain You put this in ip-up and then remove it in ip-down? Or does it stay in place the whole time? Does anyone have an example of a full firewall set-up for a home network connected to Demon that I could take a look at?
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arc1-ca.pugleaf.net!unknown!not-for-mailReferences:
<933521112.11557.0.nnrp-10.c2dea8e2@news.demon.co.uk> <m3n1wb7740.meow@hopf.demon.co.uk> <7oeo3j$67e$1@petermc.demon.co.uk> <37AE1557.3D8C3E2F@canix.co.uk> <7on5v1$1d7$1@petermc.demon.co.uk> <37B008CB.755AC0B7@canix.co.uk>Show Full Headers
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 10669a,d9f3a472d832d14c X-Google-Attributes: gid10669a,public X-Google-Thread: fac57,d9f3a472d832d14c X-Google-Attributes: gidfac57,public X-Google-Thread: 108f6a,d9f3a472d832d14c X-Google-Attributes: gid108f6a,public From: Peter McDermott <peter@petermc.demon.co.uk> Subject: Re: Sendmail Delivery Options Date: 1999/08/10 Message-ID: <7opde4$jm$1@petermc.demon.co.uk> X-Deja-AN: 511075537 X-NNTP-Posting-Host: petermc.demon.co.uk:158.152.22.244 References: <933521112.11557.0.nnrp-10.c2dea8e2@news.demon.co.uk> <m3n1wb7740.meow@hopf.demon.co.uk> <7oeo3j$67e$1@petermc.demon.co.uk> <37AE1557.3D8C3E2F@canix.co.uk> <7on5v1$1d7$1@petermc.demon.co.uk> <37B008CB.755AC0B7@canix.co.uk> X-Trace: news.demon.co.uk 934298407 nnrp-04:2173 NO-IDENT petermc.demon.co.uk:158.152.22.244 Organization: Nefarious Enterprises User-Agent: tin/pre-1.4-980618 (UNIX) (Linux/2.2.7 (i686)) Newsgroups: comp.os.linux.networking,demon.ip.support.unix,demon.tech.unix X-Complaints-To: abuse@demon.net