Linux-Networking Digest #464, Volume #12 Fri, 3 Sep 99 16:13:43 EDT
Contents:
Re: Firewall rules for neophyte... ("Tobias Knowles")
Re: NFS and GNU Linker producing corrupted executables (RHL 2.2.5-15/2.2.11 and AIX
4.2.1) (THIEBOLT François)
Compaq 5660 (or 56XX) built in ethernet ([EMAIL PROTECTED])
NIS -> 'make' is not working (Eduardo =?iso-8859-1?Q?Su=E1rez?=)
Re: More help setting up Samba ("Justin Colson")
Re: Linux under Novell (Shawn McPherson)
hosts allow and deny (Aaron Slepecky)
Re: MRTG Gives funny graphs, and incorrect statistics.. (Ben Short)
Re: Masqurading and only one NIC (ghelbig)
gateway and eth0 must be in the same class c? ("ezzi")
Re: ethernetcard not found (Chris Salin)
Re: LAN card driver source compile problem. (LhD Administrator)
Firewalling/IPCHAINS question. (Vlar Schreidlocke)
GUI network connection monitoring/logging program (Vlar Schreidlocke)
----------------------------------------------------------------------------
From: "Tobias Knowles" <[EMAIL PROTECTED]>
Subject: Re: Firewall rules for neophyte...
Date: Fri, 3 Sep 1999 10:39:01 -0700
This is what you want. It is not secure by any means.
Substitue IP with local network and mask.
ipchains -M -S 7200 10 160
ipchains -P forward DENY
ipchains -A forward -s 192.168.0.0/24 -j MASQ
echo "1" > /proc/sys/net/ipv4/ip_forward
It's up to you whether to assign per nic or even per internal machine.
Tobias Knowles
[EMAIL PROTECTED] wrote in message <7qm7nv$mse$[EMAIL PROTECTED]>...
>Have a quick question,
>if anyone could help me....
>
>I just purchased a new machine to be setup
>as a firewall. It has been set up with Slakware
>4.0 w/kernel 2.2.6, all the firewall and masq stuff
>has been compiled in. It has two nics, one going to
>a cable modem and the other to a hub for three other
>machines to connect.
>
>My question is..
>JUST FOR STARTERS so I can get the other machines out
>how would I set my rules on the firewall to let EVERYTHING
>in and EVERYTHING out? Do have to do one set of rules
>or a set of rules for each nic (eth0 & eth1), I read the
>IPCHAINS HOWTO and the IP MASQ HOWTO but am still unclear
>on how to do this
>
>/sbin/ipchains -A input -s 0/0 -d 0/0 -p ??? -j ACCEPT
>/sbin/ipchains -A output -s 0/0 -d 0/0 -p ??? -j ACCEPT
>/sbin/ipchains -A forward -s 0/0 -d 0/0 -p ??? -j ACCEPT
>
>and thats it?
>
>or would I do one for each device like this:
>
>/sbin/ipchains -A -i eth0 input -s 0/0 -d 0/0 -p ??? -j ACCEPT
>/sbin/ipchains -A -i eth0 output -s 0/0 -d 0/0 -p ??? -j ACCEPT
>/sbin/ipchains -A -i eth0 forward -s 0/0 -d 0/0 -p ??? -j ACCEPT
>/sbin/ipchains -A -i eth1 input -s 0/0 -d 0/0 -p ??? -j ACCEPT
>/sbin/ipchains -A -i eth1 output -s 0/0 -d 0/0 -p ??? -j ACCEPT
>/sbin/ipchains -A -1 eth1 forward -s 0/0 -d 0/0 -p ??? -j ACCEPT
>
>Do I not put in a "-p xxx" if I want to accept any protocol?
>and when and where do I utilize the -j MASQ option to masq my
>inside ip's?
>
>I do plan on stepping up my rules, but I cant do anything behind the
>firewall until I can at least get out.and work from there.
>I also know that the answers to these questions are out there
>and I tried reading the apprepriate HOWTO's but couldnt find anything
>specific, especially on masquerading...
>
>Any help is greatly appreciated
>Thanks in advance
>
>
>Sent via Deja.com http://www.deja.com/
>Share what you know. Learn what you don't.
------------------------------
From: THIEBOLT François <[EMAIL PROTECTED]>
Crossposted-To:
comp.os.linux.setup,comp.os.linux.development,comp.os.linux.development.kernel,comp.unix.aix
Subject: Re: NFS and GNU Linker producing corrupted executables (RHL 2.2.5-15/2.2.11
and AIX 4.2.1)
Date: Fri, 03 Sep 1999 16:45:12 +0200
Reply-To: [EMAIL PROTECTED]
Martin Knoblauch wrote:
> > a) All of the .o files compiled to either the local
> > or NFS file systems compare as Identical.
> >
> > b) Executables that are written on the NFS file system
> > do NOT work. They generate an error:
> > Memory Fault (core dump).
> >
>
> first thing to check would be that the lock demon is running (and working
> to specs :-( I have seen this on other system combinations and lockd was
> usually involved.
Ran into exactly same troubles...can you explain how did you solve it ?
Thanks.
François.
=============================================================
THIEBOLT Francois \ You think your computer run too slow ?
UPS Toulouse III \ - Check nobody's asked for tea !
[EMAIL PROTECTED] \ "The Hitchikers Guide to the Galaxy" D.Adams
=============================================================
------------------------------
From: [EMAIL PROTECTED]
Subject: Compaq 5660 (or 56XX) built in ethernet
Date: Fri, 03 Sep 1999 17:10:12 GMT
Reply-To: [EMAIL PROTECTED]
I just installed Mandrake 6.0 on a Compaq 5660 that uses a built in
ethernet with the tulip driver. Linux sees the ethernet device ok (it
can see the MAC address, etc) but DHCP does not work nor does setting
the address via static means. If I run tcpdump, it does not see any
traffic on the network. I know the device is functioning properly
because
it works fine under NT and Windows 98SE.
Anyone get Linux working on this platform?
Thanks.
<march>
Sent via Deja.com http://www.deja.com/
Share what you know. Learn what you don't.
------------------------------
Date: Fri, 03 Sep 1999 16:43:46 +0100
From: Eduardo =?iso-8859-1?Q?Su=E1rez?= <[EMAIL PROTECTED]>
Subject: NIS -> 'make' is not working
Hi
I've got a linux NIS server and i have
new users. I have tried to update my
yellow pages using 'make' but i have
found the next message:
[root@piolin /root]# cd /var/yp/
[root@piolin yp]# make
gmake[1]: Entering directory
`/var/yp/grtv'
gmake[1]: *** No rule to make target
`/etc/shadow', needed by
`passwd.byname'. Stop.
gmake[1]: Leaving directory
`/var/yp/grtv'
make: *** [target] Error 2
[root@piolin yp]#
What can i do to update the yellow
pages? I have no shadow passwords and i
don't know what's wrong.
Thanks.
------------------------------
From: "Justin Colson" <[EMAIL PROTECTED]>
Subject: Re: More help setting up Samba
Date: Fri, 3 Sep 1999 18:29:20 +0100
I had an invalid host name that was causing the NMB errors but when I start
SMB SWAT still says that it is not running and the Win98 box cannot browse
the network. Here are my smb.log and nmb.log files
Cowles, Steve <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]...
> Without seeing the log files for nmb, there is not much any of us can
offer
> as to why nmbd is not starting. Samba logs are in /var/log/samba,
> specifically log.nmb and log.smb if your using RedHat's rpm. These files
> should give you some insight on why nmbd is not starting.
>
> Steve Cowles
> SWCowles at gte dot net
>
> Justin Colson <[EMAIL PROTECTED]> wrote in message
> news:7qlkeu$mpj$[EMAIL PROTECTED]...
> > I've got a bit further setting up Samba, I've got SWAT running and my
> > smb.conf file is almost identical to the one in the howto(But with my
> > workgroup and IP addresses). When I type
> > # /etc/rc.d/init.d/smb stop
> > # /etc/rc.d/init.d/smb start
> > The stop command reports both SMB and NMBD failed and the start command
> > reports SMD OK but NMBD failed, what could be causing this?
> >
> >
>
>
begin 666 LOG.SMB
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`
end
begin 666 LOG.NMB
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`
end
------------------------------
From: Shawn McPherson <[EMAIL PROTECTED]>
Subject: Re: Linux under Novell
Date: Fri, 03 Sep 1999 16:18:39 GMT
Is your Novell network running IP, IPX, or both? Do you have to
integrate the Linux web server with the Novell File & print services or
just set it up to allow web access only? Are you using NDS? Do you need
to integrate with NDS on the Novell network?
Claudio Martinez wrote:
> Hi there, i need some advises,
> I´ll have to plug, and start ,
> a WebServer running linux...
> BuT.., it´s gonna be under a
> Novell Network, is that possible !?
> do i have to buy a client licence 4
> linux !?
> What can i do !?
>
> TnkZ!
>
> --
> ====Cláudio Martinez =================
> CCUEC - UNICAMP - GDTEC
> Gerência de Desenvolvimento Técnologico
> tel. (019) 788-2287
> ======================================
------------------------------
From: Aaron Slepecky <[EMAIL PROTECTED]>
Subject: hosts allow and deny
Date: Fri, 03 Sep 1999 16:31:06 GMT
I ahve been trying to allow pop3 ans smtp from my isp to our corp network
for a while. I have tried everything from editing the firewall to crying,
nothing has worked until now. I edited my hosts.deny to deny no one and
hosts.allow to allow all. Now I can pop fine. this is incredibly
unsafe! But the only way I can get it to work.
Is anyone honest enough to tell me how to config these files to be a
little safer, such as just allowing pop3? I have tried just allowing
specific processes (pop3, ftp etc.) but nothing works except for allowing
all.
Cheers,
Aaron
================== Posted via CNET Linux Help ==================
http://www.searchlinux.com
------------------------------
From: [EMAIL PROTECTED] (Ben Short)
Crossposted-To: aus.computers.linux,comp.os.linux.misc
Subject: Re: MRTG Gives funny graphs, and incorrect statistics..
Date: Sat, 4 Sep 1999 02:26:01 +1000
In article <OCRz3.10844$[EMAIL PROTECTED]>,
[EMAIL PROTECTED] says...
> Ben Short wrote in message ...
> >Hi,
> >
> >After installing mrtg 2.8.8 (Multi Router Traffic Grapher) and cmu-snmp
> >3.6 for linux, the results I am getting on my website seems somewhat
> >strange.
> >
> >My modem is connected to the net at the v.90 standard, and to test the
> >graphing abilities of mrtg, and proceeded to upload a file at about
> >3.2kb/s to an ftp server.
> >
> >However, the statistics that are being generated by the mrtg and snmp
> >server leave me baffled:
> >
> >Max In: 807.0 B/s (11.4%) Average In: 576.0 B/s (8.1%) Current In:
> >633.0 B/s (8.9%)
> >Max Out: 818.0 B/s (11.5%) Average Out: 604.0 B/s (8.5%) Current
> >Out: 660.0 B/s (9.3%)
>
>
> Wouldn't that mean the SPEED out and in ??? which I would presume to be
> pretty close to being equal...sounds about right.
Yes, but if my link speed is 3.5kb/s uploading, this file, and there is
no data being received by the moddem during this same period, does it
strike you as odd that:
a) 3.5kb/s = 800bytes/s? that just doesnt make sense to me
b) it is _Generating_ traffic where it doesnt exist?
I have seen a friens graph from his router, and it clearly goes up to
3600 bytes/s, something that mine is not.
>
> Tony Platt
>
>
>
--
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Ben Short http://www.shortboy.dhs.org
Shortboy Productions mailto:[EMAIL PROTECTED]
*Remove n0spam to email me*
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
------------------------------
From: ghelbig <[EMAIL PROTECTED]>
Subject: Re: Masqurading and only one NIC
Date: Fri, 03 Sep 1999 08:54:00 -0700
Yeah, but.
If his local subnet is 192.168.xx.xx, and there's a router
between you and him, you'll never see it.
And if you're close enough for there not to be a router,
you could just look over his shoulder as he typed. :)
G.
* Sent from RemarQ http://www.remarq.com The Internet's Discussion Network *
The fastest and easiest way to search and participate in Usenet - Free!
------------------------------
From: "ezzi" <[EMAIL PROTECTED]>
Subject: gateway and eth0 must be in the same class c?
Date: Thu, 2 Sep 1999 19:48:56 -0400
hello:
2.0.36 kernal, how can i have eth0's ip address on a different class C than
the gateway for those class's?,five class C's for one gateway. when i tried
to add the gateway ip address to the route table, route said the ip address
was unreachable. is there away around it?
thankx for help
------------------------------
From: Chris Salin <[EMAIL PROTECTED]>
Subject: Re: ethernetcard not found
Date: Fri, 03 Sep 1999 11:54:51 -0500
Look for "pcitools" and the man page.
Check the Hardware HOWTO for your card. If it is not supported in the
kernel, you need to ask your card's manufacturer for a driver. Or, if
you're willing, write your own driver ;-)
I bought an XPressNet 10/100BT PCI card that came with a driver. But I
had to modify it and recompile to work with the 2.2 kernel.
Chris Salin
De Vries wrote:
> Hello
>
> LinuX can't find my ethernet card, it's a plug and play card:
> 10/100Base-TX Fast ethernet card for PCI. Does someone know how to
> install the
> card??
>
> dvs
------------------------------
From: LhD Administrator <[EMAIL PROTECTED]>
Subject: Re: LAN card driver source compile problem.
Date: Fri, 03 Sep 1999 19:31:06 GMT
Jeff Bhavnanie wrote:
> errors. When I do 'insmod sis900.o' i get whole bunch of "unresolved
symbol"
> statements. I'm a total newbie at compiling stuff. So, could someone
What are the errors?
Could it be that you have an SMP module vs. non-SMP kernel, version
mismatch, etc.?
LhD Administrator
LhD: Linux Hardware Database
http://lhd.datapower.com
================== Posted via CNET Linux Help ==================
http://www.searchlinux.com
------------------------------
From: [EMAIL PROTECTED] (Vlar Schreidlocke)
Subject: Firewalling/IPCHAINS question.
Date: Fri, 03 Sep 1999 18:59:23 GMT
What would be the ipchains instructions to put in an rc.firewall file
for a computer that is not masquerading and getting online via a
dialup ppp connection?
I just installed RH6.0 on an older notebook that couldn't handle Win98
anymore and now it works perfectly with Red Hat 6.0 except that
minutes after installing and logging on I think I had someone portscan
me and gain access through telnet or ftp or some other open service
before I had a chance to get unneeded services shut of and a firewall
up. I would like to be able to connect to everything, but not have
anyone get on the notebook from the outside.
------------------------------
From: [EMAIL PROTECTED] (Vlar Schreidlocke)
Subject: GUI network connection monitoring/logging program
Date: Fri, 03 Sep 1999 19:43:43 GMT
Is there a graphical network connection monitoring/logging program for
Linux (RH6.0)? I want to be able to see who's on, what their ip and
port is and maybe be able to terminate the connection after logging as
much info about them as possible. This would be for hacker protection.
On my Win98 box I have Nukenabber and Xnetstat. I'm looking for
something that will do these same functions under Linux.
------------------------------
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