Linux-Networking Digest #121, Volume #10 Fri, 5 Feb 99 23:13:55 EST
Contents:
Re: Diskless system - bootp card (Duncan Simpson)
Re: Help: FTP hang Solaris 2.6->Redhat 5.2 ("Arthur P. Smith")
limiting Web site access in Linux ([EMAIL PROTECTED])
Re: Connecting Linux to USWest.net (Richard Steiner)
Yes folks, another newbie ppp problem (Eric Zwicky)
Novice question about TCP/IP ("Tim Mayben")
DNS Multiple DomainName One IP ([EMAIL PROTECTED])
Cox@Home (John Duncan)
Re: Mascerading & Ip Adresses (M. Buchenrieder)
Re: PPP help please (Clifford Kite)
Re: Winmodem (Lew Pitcher)
Re: Big Networking Situation giving me headaches... ("Andrew C. Ohnstad")
StarOffice and smtp (sendmail) problem (David Efflandt)
Re: SYN Flooding (Duncan Simpson)
Re: Need help with home network ("nate")
Re: OOB problem (Warren Young)
Re: Linux and Windows (Richard Steiner)
----------------------------------------------------------------------------
From: [EMAIL PROTECTED] (Duncan Simpson)
Subject: Re: Diskless system - bootp card
Date: 5 Feb 1999 18:29:10 GMT
In <6T6u2.422$[EMAIL PROTECTED]> "Michael" <[EMAIL PROTECTED]> writes:
>I am trying to build a diskless workstation using Linux. I can't use local
>HD/FD so I need to know if there is a card that will take the place of a HD
>and its boot sector that will allow me to put in all the required bootp
>software in FLASH Rom/ or even the whole OS.
>I have heard that some network cards have a socket for a ROM that is used
>for this sort of thing, but I understood that card was for Novell only. If
>that is not correct, can anyone tell me whether there is a source for a
>Linux compatible chip or source for this? I do not know much about the NIC
>hardware, so if I am saying something stupid I apologize.
Check the card compatibilty with a running Linux kernel. Loading an OS
with bootp and tftp is not operating system specific because no OS is
loaded while the code on the ROM is doing it. Their are Linux servers
for both easily avialabale. The linux source tree has source code for
a boot rom in the some some subdirectory of /usr/src/linux/net AFAIK.
There many be brain damage in some boot roms that stops them booting
linux though. The kernel tries to handle this and developers will
usually fix the problem in the presence of decent
documentation. Assuming nobody will supply this the problem is
sometimes fixed anyway.
Duncan (-:
--
Duncan (-:
------------------------------
From: "Arthur P. Smith" <[EMAIL PROTECTED]>
Crossposted-To:
comp.os.linux.misc,comp.sys.sun.admin,comp.sys.sun.misc,comp.protocols.tcp-ip
Subject: Re: Help: FTP hang Solaris 2.6->Redhat 5.2
Date: Fri, 05 Feb 1999 09:59:58 -0500
Arthur P. Smith wrote:
> I'm experiencing a problem with FTP regularly hanging going from a
> series of Solaris 2.6
> boxes (and even one 2.5, but not a machine running Solaris 7, at least
> so far) to a server
> running Linux RedHat 5.2, with the wu-ftpd (2.4.2 beta 18).
>
> The ftp session always starts ok, but if I run an mget to get a bunch of
> files, I can get
> maybe 1- 2 dozen (the number varies a lot) and then it hangs getting one
> of the files.
> The hang is at least 2 minutes long (generally the files take only
> seconds to transfer) and it does
> not recover while I wait. If I hit Ctrl-C it looks like the entire file
> did transfer, but it was waiting
> for something to finish or close?
Well, it turned out to be a Sun TCP problem. "netstat" on either end showed
the connection ESTABLISHED on the Sun end, but in FIN_WAIT_1 on the Linux
end, meaning that the Linux box had sent a FIN, but the Sun box was not
acknowledging it. Scanning with tcpdump confirmed that the Linux box was
repeatedly sending the FIN in a packet that also had the last bit of data -
and the Sun box was acknowledging the data but not the FIN. Turning to
trusty old Sunsolve we found Sunsolve Bug ID 4083814:
> Sun fails to ack the FIN from the other system. It is a little subtle,
because
> other system sends data in the packet with the FIN and we ack all the
> data, but not the FIN. Since we do not ack the FIN, he resends it,
> but instead of sending just the FIN, it resends the entire last packet.
> We continue to ignore the FIN. In addition, it is apparent from the
> behavior of the ftpd app, the data that has been received is never
delivered to
> the ftpd.
until finally of course it times out some other way. The patch for Solaris
2.6 is number 105529 (for Sparc), dated Sep 15 1998.
I would think this would leave other protocols hanging, besides FTP,
wouldn't it? And there are a lot of Sun Solaris 2.6 and earlier boxes out
there! It does seem to be fixed in Solaris 7. Anyway, I'm surprised there
wasn't more of an awareness of this type of problem out there...
Arthur ([EMAIL PROTECTED])
------------------------------
From: [EMAIL PROTECTED]
Subject: limiting Web site access in Linux
Date: Fri, 05 Feb 1999 18:06:36 GMT
Hi -
I am in the process of setting up my first Linux machine (running RedHat
5.1). It will be used for Internet access by our employees to 2 specific Web
sites (not in-house). My question is: is there any way that I can limit
which Web sites may be visited? The fear by Administration is that folks will
rummage about in all sorts of sordid Web sites on Company time, and they
would like for me to eliminate that as much as possible.
Thanks in advance for any help you can give!
Best Regards,
Karen Clendenin
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------------------------------
From: [EMAIL PROTECTED] (Richard Steiner)
Crossposted-To: mn.online-service
Subject: Re: Connecting Linux to USWest.net
Reply-To: [EMAIL PROTECTED]
Date: Fri, 05 Feb 1999 20:34:24 -0600
Here in comp.os.linux.networking, Steve Ulrich <[EMAIL PROTECTED]>
spake unto us, saying:
>ewe need help
I saw that!
--
-Rich Steiner >>>---> [EMAIL PROTECTED] >>>---> Bloomington, MN
OS/2 + Linux (Slackware+RedHat+SuSE) + FreeBSD + Solaris +
WinNT4 + Win95 + PC/GEOS + Executor = PC Hobbyist Heaven!
Baaaah!
------------------------------
From: [EMAIL PROTECTED] (Eric Zwicky)
Subject: Yes folks, another newbie ppp problem
Date: Fri, 05 Feb 1999 17:06:31 GMT
(cross-posted to linux.redhat.ppp)
Hello gurus,
I can connect to my ISP (earthlink) and pick up an IP from the dhcp
server, but I can't "surf" nor ping the nameservers, or any other IP
address I know by heart. The error message from ICMP says "network is
unreachable".
"ifconfig" says:
lo: Link encap: Local Loopback
inet addr:127.0.0.1 Bcast:127.255.255.255 MasK;255.0.0.0
UP BROADCAST LOOPBACK RUNNING MTU:3584 Metric:1
RX packets:103 errors:0 dropped:0 overruns:0
TX packets:103 errors:0 dropped:0 overruns:0
eth0 link encap:Ethernet HWaddr: 00:A0:D2:F0:2D:f8
inet addr:192.168.0.3 Bcast:192.168.0.255 Mask:255.255.255.0
RX packets:292 errors:0 dropped:0 overruns:0
TX packets:292 errors:0 dropped:0 overruns:0
Interrupt:5 Base address:0xb800
ppp0 Link encap: Point-to-Point Protocol
inet addr:38.30.108.149 P-t-P:38.01.1.1 Mask:255.0.0.0
UP POINTOPOINT RUNNING MTU:1500 Metric:1
RX packets:6 errors:0 dropped:0 overruns:0
TX packets:6 errors:0 dropped:0 overruns:0
"route" says:
Kernel Ip routing table
Destination Gateway Genmask Flags Metric Ref
Use Iface
38.1.1.1 * 255.255.255.255 UH 0
0 0 ppp0
192.168.0.0 * 255.255.255.0 U 0
0 3 eth0
127.0.0.0 * 255.0.0.0 U 0 0
2 lo
"tail -f /var/log/messages" says:
Feb 5 14:19:42 eric pppd[626]: Serial connection established.
Feb 5 14:19:43 eric pppd[626]: Using interface ppp0
Feb 5 14:19:43 eric pppd[626]: Connect: ppp0 <--> /dev/modem
Feb 5 14:19:47 eric pppd[626]: local IP address 38.30.108.149
Feb 5 14:19:47 eric pppd[626]: remote IP address 38.1.1.1
Feb 5 14:20:01 eric kernel: lp1 at 0x0378, (polling)
Feb 5 14:39:12 eric kernel: lp1 at 0x0378, (polling)
Feb 5 14:40:57 eric pppd[626]: Terminating on signal 15.
Feb 5 14:40:57 eric pppd[626]: Connection terminated.
Feb 5 14:40:57 eric pppd[626]: Exit.
(that was me terminating the connection using netcfg tp deactivate the
interface.)
Does anyone have any ideas, or do you need more info from me, like
more of the /var/log/messages? I didn't want to clutter up this
message with all my scripts, but I can send them if it will help to
shed light on my problem.
Thanks in advance,
Eric
Eric Zwicky
Operations Manager
Comcast Online
Chesterfield, VA
------------------------------
From: "Tim Mayben" <[EMAIL PROTECTED]>
Subject: Novice question about TCP/IP
Date: Fri, 05 Feb 1999 18:40:25 GMT
Hi, all.
I've installed Red Hat 2.0 on a PC on a NT LAN. The PC is getting its TCP/IP
address from DHCP and it can get out to the internet--then my connection
dies. I've managed to ftp to Netscape and get a copy of Navigator and
install it (I'm a total Linux novice, self-taught, so this was cause for
celebration) and it will browse to one or maybe two sites before I get
errors that refer to my hostname (I don't know what it should be, so I left
it "localhost").
It's weird, because once the connection dies, when I ping an address, the
name still resolves, but it can't get to it. It's like it can still find my
DNS server, but it can't get out past the default gateway (and I do have the
default gateway entered in the network dialog box). Please tell me what to
set up in networking, or where to find a tutorial.
Also, do the networking settings I set up in the graphical shell carry over
once I quit the shell and work from the command line?
Regards,
Tim
--
Anti-Spam countermeasures in use; please remove the last 3 characters if
replying via email.
------------------------------
From: [EMAIL PROTECTED]
Subject: DNS Multiple DomainName One IP
Date: Fri, 05 Feb 1999 17:13:22 GMT
Hi, I'm running my own DNS, and have a couple domain names registered to me.
I have all three pointing to the same IP address, and all three are working,
kind of. While they all work, named is reporting sysquery errors to my
/var/log/messages file. It gives a sysquery fail for domain2.com and
domain3.com every fifteen minutes, but not for the primary domain.
I think my named.boot file is setup wrong. I have the primary set to
domain1.com, as well as the rev file. (something like this)
primary domain1.com domain1.hosts
primary 000.00.00.in-addr.arpa rev.hosts
secondary domain2.com domain2.hosts
secondary domain3.com domain3.hosts
For the other two I have secondary pointing to domain2.com and a secondary
pointing to domain3.com, each with their own seperate host files.I have read
DNS/BIND from o'reilly, but couldn't trace my problem.
While this setup is working, I don't feel comfortable with named constantly
reporting errors, and am even less comfortable with it being logged every
fifteen minutes (kinda gett'n big).
Thanks
Dan
If you could a reply here and to email that would be great :), thanks again.
[EMAIL PROTECTED] (remove NOSPAM.)
Dan-
============= Posted via Deja News, The Discussion Network ============
http://www.dejanews.com/ Search, Read, Discuss, or Start Your Own
------------------------------
From: John Duncan <[EMAIL PROTECTED]>
Subject: Cox@Home
Date: Fri, 05 Feb 1999 18:43:55 GMT
I'm having difficulty configuring Caldera 1.3 to connect to the net
using my cable modem. I've had different messages (some about the DNS
server and others saying it couldn't find www.yahoo.com). I've read
several articles about the DHCP and how you need to have that and then
I've read several articles saying there's no need for it.
Some details on my end are:
@Home is my ISP and I'm able to get info on my computer name
"cx45917-a", my static IP address, subnet mask, gateway/router, DNS/Name
Server 1 and 2, and Domain.
The domain is escnd1.sdca.home.com
I'm assuming that my FQDN is cx45917-a.escnd1.sdca.home.com
Does that sound right. Also, linux asks for a broadcast and network
when configuring the network properties. I don't have that info, but I
book I read said that I could use the defaults. My eth0 is being read
because I see it in bootup and when I use ifconfig I can see both l0 and
eth0, with my IP address shown under eth0.
Under win98 in the network properties (TCP/IP) I have disable WINS
resolution which makes the "Use DHCP" button greyed out. I don't know
if any of this makes sense but if someone could help, it would be
greatly appreciated. Let me know if you need more info.
------------------------------
From: [EMAIL PROTECTED] (M. Buchenrieder)
Subject: Re: Mascerading & Ip Adresses
Date: Fri, 5 Feb 1999 23:20:47 GMT
Patrick <[EMAIL PROTECTED]> writes:
[...]
>I got a Firewall/squid/mascerading linux suse 5.1 box (internal
>192168.2.1, external 195.34.153.103) to connect my privat network to a
>cable modem.
>Everything worked fine for connecting 192.168.2.2 and 192.168.2.3 they
>have inet connection and can also icq etc...
>But when assigning an IP adress higher than 192.168.2.3 to any of the
>hosts (i noticed when assigning a new computer), then onyl the lan is
>visible, but the inet is unreachable from all IP >3.
>As it was my firts installation, I guess i must have goofed some mask ..
>but I could not find the right one.
Your assumption is correct.
>Any help appriciated - see schema & rc.config for details - (please also
>replay using pawart@[EMAIL PROTECTED])
Certainly not.
> Patrick
>exterior
>195.34.153.103
> LINUX SUSE 5.1 (MASQ/FW/SQUID)
>192.168.2.2
>interior
>192.168.2.x
>rc.config:
>FW_START="yes"
>FW_LOCALNETS="195.34.152.0/30 192.168.2.0/30"
[...]
The external network should not be in FW_LOCALNETS in the first
place, btw.
You're defining a subnet with exactly 4 IP addresses, where only 2
may be used as host addresses. A /30 subnet means a subnet mask
of 255.255.255.252 , and with this addressing, you may only use
192.168.2.1 and 192.168.2.2 . 192.168.2.0 is the network address
and 192.168.2.3 is the broadcast address. While using the broadcast
address as a host address might work, it is certainly not recommended
to do so.
So use a different subnet mask, like /28 , which would give you a
range of 16 IP addresses per subnet (14 addresses useable).
Please read RFC1878 for details .
Michael
--
Michael Buchenrieder * [EMAIL PROTECTED] * http://www.muc.de/~mibu
Lumber Cartel Unit #456 (TINLC) & Official Netscum
Note: If you want me to send you email, don't mungle your address.
------------------------------
From: [EMAIL PROTECTED] (Clifford Kite)
Subject: Re: PPP help please
Date: 5 Feb 1999 20:30:10 -0600
Mark H. ([EMAIL PROTECTED]) wrote:
: I've been over the post in the group and couldn't find an answer so
: here it goes...
: I can get ppp to login but it complains about configuration.
: using redhat 5.2, kernel 2.2.1
: any and all help appreciated.
<snip, nothing unusual>
: Feb 5 17:36:27 localhost chat[1102]: send (ppp^M)
: Feb 5 17:36:27 localhost chat[1102]: expect (~~)
: Feb 5 17:36:27 localhost chat[1102]: ppp^M
: Feb 5 17:36:27 localhost chat[1102]: Entering PPP mode.^M
: Feb 5 17:36:27 localhost chat[1102]: Async interface address is
: unnumbered (Loopback0)^M
You *might* get a quick fix by trying the pppd option ":192.168.0.1" .
That's a colon followed immediately by the IP.
The truth is that's a guess based on the preceding message and you
very well may have to dig further for the problem. See below.
: Feb 5 17:36:27 localhost chat[1102]: Your IP address is
: 204.116.91.84. MTU is 1500 bytes^M
: Feb 5 17:36:27 localhost chat[1102]: ^M
: Feb 5 17:36:32 localhost chat[1102]: ~~
: Feb 5 17:36:32 localhost chat[1102]: -- got it
: Feb 5 17:36:32 localhost chat[1102]: send (^M)
: Feb 5 17:36:32 localhost pppd[1097]: Serial connection established.
: Feb 5 17:36:33 localhost pppd[1097]: Using interface ppp0
: Feb 5 17:36:33 localhost pppd[1097]: Connect: ppp0 <--> /dev/modem
: Feb 5 17:37:14 localhost pppd[1097]: IPCP: timeout sending
: Config-Requests
: Feb 5 17:37:14 localhost pppd[1097]: Connection terminated.
: Feb 5 17:37:15 localhost pppd[1097]: Exit.
You need to look at the ppp negotiation messages, adding the pppd option
"debug" should it not already be an option. The messages should be in
/var/log/debug. If they are not, look in other files in /var/log.
Still no negotiation messages, add the line
*.=debug /var/log/debug
to /etc/syslog.conf and do " kill -HUP `pidof syslogd` " to make syslogd
reread syslog.conf.
man syslog.conf, man syslogd.
--
Clifford Kite <[EMAIL PROTECTED]> Not a guru. (tm)
/* Speak softly and carry a +6 two-handed sword. */
------------------------------
From: [EMAIL PROTECTED] (Lew Pitcher)
Subject: Re: Winmodem
Date: Sat, 06 Feb 1999 03:30:19 GMT
Reply-To: [EMAIL PROTECTED]
On 6 Feb 1999 01:02:15 GMT, [EMAIL PROTECTED] wrote:
>Lew Pitcher <[EMAIL PROTECTED]> wrote:
>> Long answer: The manufacturers of Winmodems have not released the specs for
>> the software necessary to make these into full function modems. Without
>> those specs, Linux developers are having a very hard time building drivers
>> that act like the windows DLLs supplied with winmodems. Thus, no support
>> for winmodems is currently available for Linux.
>
>I've questioned the validity of off-loading the DSP functions to the
>processor anyway. This is a hack that I think should be left in the
>realm of Windows where off-loading embedded processes to the main CPU is
>remeninst of Microsoft's standard practice of throwing memory at problem
>rather than actually fixing bugs.
I agree.
However, we *do* have analogous packages already developed and installed;
what is Ghostview/Ghostscript if not an implementation of a component that
*should* have been (and usually is) implemented in hardware? The reasoning
for keeping DSP processing on a chip (and off of the system) is the same
reasoning for keeping rendering processing on a chip (and off of the
system).
I'm not knocking Ghostscript or Ghostview, and I'm not advocating DSP in
software (a 'la WinModems), but if someone want's WinModem support bad
enough, they might just write the driver and the rest of us might just use
it. We're certainly pragmatic enough to use the rendering-in-software that
Ghostscript gives us, rather than go out and buy a proper (and expensive)
Postscript-enabled printer.
Lew Pitcher
Joat-in-training
------------------------------
From: "Andrew C. Ohnstad" <[EMAIL PROTECTED]>
Subject: Re: Big Networking Situation giving me headaches...
Date: Fri, 5 Feb 1999 22:30:14 -0500
Andrew C. Ohnstad wrote in message ...
>I've got a total of 6 computers to set up...
>
>2 Linux boxes, 4 Win 95/98 boxes. Not such a big deal. But, there's
>also the T-1 to consider...
...
>How the heck do I set all this up? Here is my best guess...
Talking with one of the networking guys at work we came up with this:
2 NIC cards in the Linux boxes.
1 NIC in each of the Win boxes.
Take the T-1 From the wall, plug that into a hub, then plug one NIC from
each Linux Box into that hub and assign those the static IP's...
Hook all 6 remaining NIC's, one from each computer, to another hub.
Set up IPMasq using the Linux boxen.
All should be good, no?
=-=Andrew
------------------------------
From: David Efflandt <[EMAIL PROTECTED]>
Subject: StarOffice and smtp (sendmail) problem
Date: Sat, 06 Feb 1999 02:57:05 GMT
Reply-To: [EMAIL PROTECTED]
Has anyone gotten StarOffice to work properly through a local SMTP=20
server (sendmail)? SO's help file has no info on its mail functions=20
(except maybe in German version).
Background: RedHat 5.2, StarOffice 5.0, PPP connection with static IP=20
and hostname. I have a valid internet hostname, but it's listed in=20
/etc/hosts as 0.0.0.0 so it works offline for apache. When online,=20
ip-up.local plugs ISP domain and nameservers into resolv.conf. At=20
that point, all DNS works including internet IP of my hostname=20
returned from nslookup (apache works then as well).
Pine sends mail immediately from a user matching my ISP username with=20
user-domain=3Dxnet.com in .pinerc (ie: From: [EMAIL PROTECTED]). It=20
also works both ways for any user with default hostname (ie:=20
[EMAIL PROTECTED]).
If user efflandt has StarOffice configured to use From:=20
[EMAIL PROTECTED], and points it to localhost for SMTP, it just sits=20
in SO's outbox due to a name resolution problem. If I point it to my=20
hostname, sendmail accepts it without error, but defers it forever in=20
mqueue because it cannot resolve xnet.com or the To: address. Even=20
with SO mail hung in the queue, pine mail passes through the queue=20
From: [EMAIL PROTECTED] without any problem.
If I restart sendmail while online (or sendmail -q10m), mqueue is=20
flushed and continues to operate with SO pointed to my hostname (but=20
not localhost).
Does anyone have a clue how to configure StarOffice to work as=20
promptly as pine, without sendmail -q or restarting sendmail? Posts=20
about this to startdivision and sendmail newsgroups have gotten no=20
replies. For now, I have my outbox pointed to my ISP's SMTP, and that=20
works.
--=20
David Efflandt eMail: [EMAIL PROTECTED]
http://www.xnet.com/~efflandt/
------------------------------
From: [EMAIL PROTECTED] (Duncan Simpson)
Subject: Re: SYN Flooding
Date: 5 Feb 1999 18:56:32 GMT
In <[EMAIL PROTECTED]> Tobin Fricke <[EMAIL PROTECTED]> writes:
>How does one protect a Linux machine from being SYN Flooded, or, in
>general, from other common denial of service attacks?
Turn on syncookies. I have actually seen this work...the attack totally
failed on a vicitmised server after syncookies were installed.
Duncna (-:
--
Duncan (-:
------------------------------
From: "nate" <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux.questions
Subject: Re: Need help with home network
Date: Sat, 06 Feb 1999 03:35:04 GMT
Thanks for the responses, here's more:
I've seen the ARP packets go out from only the one machine that the sniffer
is loaded on, I see nothing from the other machine.
Yes, both machines make the lights on the hub light up, and I don't have
either of the cables stuck into the daisy-chain port.
<!-- begin bipolar stats,
RH5.2 on a P90 with an ISA SMC EtherEZ NIC -->
[root@bipolar /root]# ifconfig
lo Link encap:Local Loopback
inet addr:127.0.0.1 Bcast:127.255.255.255 Mask:255.0.0.0
UP BROADCAST LOOPBACK RUNNING MTU:3584 Metric:1
RX packets:16 errors:0 dropped:0 overruns:0
TX packets:16 errors:0 dropped:0 overruns:0
eth0 Link encap:Ethernet HWaddr 00:00:C0:09:94:C7
inet addr:192.168.1.2 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0
TX packets:0 errors:0 dropped:0 overruns:0
Interrupt:11 Base address:0x250 Memory:c0000-c2000
[root@bipolar /root]# route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
Iface
192.168.1.0 * 255.255.255.0 U 0 0 1 eth0
127.0.0.0 * 255.0.0.0 U 0 0 1 lo
[root@bipolar /root]# ping 192.168.1.254
PING 192.168.1.254 (192.168.1.254): 56 data bytes
--- 192.168.1.254 ping statistics ---
6 packets transmitted, 0 packets received, 100% packet loss
[root@bipolar /root]# ping localhost
PING localhost (127.0.0.1): 56 data bytes
64 bytes from 127.0.0.1: icmp_seq=0 ttl=64 time=0.5 ms
64 bytes from 127.0.0.1: icmp_seq=1 ttl=64 time=0.3 ms
64 bytes from 127.0.0.1: icmp_seq=2 ttl=64 time=0.3 ms
64 bytes from 127.0.0.1: icmp_seq=3 ttl=64 time=0.3 ms
--- localhost ping statistics ---
4 packets transmitted, 4 packets received, 0% packet loss
round-trip min/avg/max = 0.3/0.3/0.5 ms
[root@bipolar /root]# ping bipolar
PING bipolar.bellsouth.net (192.168.1.2): 56 data bytes
64 bytes from 192.168.1.2: icmp_seq=0 ttl=64 time=0.5 ms
64 bytes from 192.168.1.2: icmp_seq=1 ttl=64 time=0.3 ms
64 bytes from 192.168.1.2: icmp_seq=2 ttl=64 time=0.3 ms
64 bytes from 192.168.1.2: icmp_seq=3 ttl=64 time=0.3 ms
--- bipolar.bellsouth.net ping statistics ---
4 packets transmitted, 4 packets received, 0% packet loss
round-trip min/avg/max = 0.3/0.3/0.5 ms
<!-- begin skitzo stats,
RH5.1 on i486 with a ISA SMC EtherEZ NIC -->
[root@skitzo /mnt/floppy]# route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
Iface
192.168.1.0 * 255.255.255.0 U 0 0 1 eth0
127.0.0.0 * 255.0.0.0 U 0 0 2 lo
[root@skitzo /mnt/floppy]# ping localhost
PING localhost (127.0.0.1): 56 data bytes
64 bytes from 127.0.0.1: icmp_seq=0 ttl=64 time=1.1 ms
64 bytes from 127.0.0.1: icmp_seq=1 ttl=64 time=0.6 ms
64 bytes from 127.0.0.1: icmp_seq=2 ttl=64 time=0.6 ms
--- localhost ping statistics ---
3 packets transmitted, 3 packets received, 0% packet loss
round-trip min/avg/max = 0.6/0.7/1.1 ms
[root@skitzo /mnt/floppy]# ping 192.168.1.2
PING 192.168.1.2 (192.168.1.2): 56 data bytes
--- 192.168.1.2 ping statistics ---
4 packets transmitted, 0 packets received, 100% packet loss
It all looks good to me, anyone see any problems?
email me at [EMAIL PROTECTED]
thanks,
nate
nate wrote in message ...
>I have two PC's at home that I'm trying to network.
>One is named bipolar, and it is a triple boot NT4/RH5.2/FreeBSD 3.0
pentium.
>The other is named skitzo and it is a 486 running Red Hat 5.1 Both PC's
>have a SMC EtherEZ NIC with UTP cable running to a SMC active hub.
>I can boot both into Linux, both recognize the cards using Donald Becker's
>SMC Ultra NIC driver, and both get the cards assigned their proper
addresses
>and routing tables.
>The routes to the local network, the private address space 192.168.1.0 are
>setup. The IP address for skitzo is 192.168.1.254 and the IP address for
>bipolar is 192.168.1.2
>Neither card has any conflicts with IRQ's or I/O addresses (I looked into
>the /proc filesystem). Each PC can ping it's own network devices, but
>cannot ping the other machine.
>Here's the kicker, when I sit at the console of either machine and ping the
>other (by it's IP address, not it's name), I can see the lights on the hub
>light up, the light for the cable from the PC I'm sitting at! My packets
>are getting through, I know it because when I ping flood with ping -f the
>light goes really fast, and regular pings are slower blinks.
>Neither machine answers the other, though. I have a sniffer and I can see
>that one machine is sending out ARP requests, not the ICMP echo packets I
>would want. This tells me that that machine can't resolve the IP address
>into a MAC address, and it keeps trying to figure it out.
>Here (finally) is the big question: Do I need to do anything to make Linux
>answer the ARP requests? I don't see any reason why the packets would go
to
>the hub and not to the other NIC. The TCP/IP stack should take care of
>answering the ARP requests, right?
>What is my problem? The routes are 192.168.1.0 for each other's IP address,
>the mask on both is 255.255.255.0, and the broadcast is 192.168.1.255 for
>both. I have gone over everything and can't find anything wrong. Any
>ideas?
>Please email me at [EMAIL PROTECTED], or [EMAIL PROTECTED]
>Thanks,
>nate
>
>
------------------------------
From: Warren Young <[EMAIL PROTECTED]>
Subject: Re: OOB problem
Date: Fri, 05 Feb 1999 13:50:01 -0700
[EMAIL PROTECTED] wrote:
> I have two applications communicating with one another, one running on >Linux
> (Slakware, kernel v. 2.0.34) and one on Solaris. I have used OOB messages to
I can't help you to get your program working, but I _can_ tell you that
there are at least two common -- but mutually-exclusive -- ways to
implement OOB. So, while communicating over the LAN, you're only
talking about two boxes that (apparently) implement OOB the same way,
but over a PPP link and the Internet, there are usually dozens of boxes
in the way that may each interpret your OOB data differently.
A much better idea is to simply use a second connection for OOB
signalling.
Good luck,
--
= Warren -- http://www.cyberport.com/~tangent/
= ICBM Address: 36.8274040 N, 108.0204086 W, alt. 1714m
= If you lie to the computer, it will get you.
------------------------------
From: [EMAIL PROTECTED] (Richard Steiner)
Subject: Re: Linux and Windows
Reply-To: [EMAIL PROTECTED]
Date: Fri, 05 Feb 1999 20:35:23 -0600
Here in comp.os.linux.networking, Calvin Chak <[EMAIL PROTECTED]>
spake unto us, saying:
>What are the advantages of using Linux to get on the Internet
>rather than using Win95/98 ?
For me, the advantages were:
(1) I didn't have to pay for it again (I had a copy already I could
legally install).
(2) Linux works better as a firewall than Windows does. :-)
--
-Rich Steiner >>>---> [EMAIL PROTECTED] >>>---> Bloomington, MN
OS/2 + Linux (Slackware+RedHat+SuSE) + FreeBSD + Solaris +
WinNT4 + Win95 + PC/GEOS + Executor = PC Hobbyist Heaven!
An unbreakable toy is useful for breaking other toys.
------------------------------
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