* Strange entries in /var/log/messages
@ 2004-03-01 12:26 Ray Leach
2004-03-01 12:29 ` Alexis
2004-03-01 12:31 ` Antony Stone
0 siblings, 2 replies; 5+ messages in thread
From: Ray Leach @ 2004-03-01 12:26 UTC (permalink / raw)
To: Netfilter Mailing List
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Hi All
Can anyone explain why a machine on 10.0.0.10/24 would try and
communicate with another machine 10.0.0.4/24 via a router?
Mar 1 14:19:37 firefly kernel: DROP FORWARD INTERNAL: IN=eth2 OUT=eth2
SRC=10.0.0.10 DST=10.0.0.4 LEN=48 TOS=0x00 PREC=0x00 TTL=127 ID=17562 DF
PROTO=TCP SPT=4601 DPT=159 WINDOW=64240 RES=0x00 SYN URGP=0
Mar 1 14:19:37 firefly kernel: DROP FORWARD INTERNAL: IN=eth2 OUT=eth2
SRC=10.0.0.10 DST=10.0.0.4 LEN=48 TOS=0x00 PREC=0x00 TTL=127 ID=17563 DF
PROTO=TCP SPT=4602 DPT=158 WINDOW=64240 RES=0x00 SYN URGP=0
Mar 1 14:19:40 firefly kernel: DROP FORWARD INTERNAL: IN=eth2 OUT=eth2
SRC=10.0.0.10 DST=10.0.0.4 LEN=48 TOS=0x00 PREC=0x00 TTL=127 ID=17593 DF
PROTO=TCP SPT=4601 DPT=159 WINDOW=64240 RES=0x00 SYN URGP=0
What is this? Port 158 and 159 apparently belong to
BackupExec/NetBackup. 10.0.0.10 is our backup server, but why does it
try and talk to 10.0.0.4 via the default router?
--
--
Raymond Leach <raymondl@knowledgefactory.co.za>
Network Support Specialist
http://www.knowledgefactory.co.za
"lynx -source http://www.rchq.co.za/raymondl.asc | gpg --import"
Key fingerprint = 7209 A695 9EE0 E971 A9AD 00EE 8757 EE47 F06F FB28
--
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[-- Type: application/pgp-signature, Size: 189 bytes --]
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Strange entries in /var/log/messages
2004-03-01 12:26 Strange entries in /var/log/messages Ray Leach
@ 2004-03-01 12:29 ` Alexis
2004-03-01 12:34 ` Alexis
2004-03-01 12:31 ` Antony Stone
1 sibling, 1 reply; 5+ messages in thread
From: Alexis @ 2004-03-01 12:29 UTC (permalink / raw)
To: Ray Leach; +Cc: Netfilter Mailing List
because a more specific static route?
On Mon, 2004-03-01 at 09:26, Ray Leach wrote:
> Hi All
>
> Can anyone explain why a machine on 10.0.0.10/24 would try and
> communicate with another machine 10.0.0.4/24 via a router?
> Mar 1 14:19:37 firefly kernel: DROP FORWARD INTERNAL: IN=eth2 OUT=eth2
> SRC=10.0.0.10 DST=10.0.0.4 LEN=48 TOS=0x00 PREC=0x00 TTL=127 ID=17562 DF
> PROTO=TCP SPT=4601 DPT=159 WINDOW=64240 RES=0x00 SYN URGP=0
> Mar 1 14:19:37 firefly kernel: DROP FORWARD INTERNAL: IN=eth2 OUT=eth2
> SRC=10.0.0.10 DST=10.0.0.4 LEN=48 TOS=0x00 PREC=0x00 TTL=127 ID=17563 DF
> PROTO=TCP SPT=4602 DPT=158 WINDOW=64240 RES=0x00 SYN URGP=0
> Mar 1 14:19:40 firefly kernel: DROP FORWARD INTERNAL: IN=eth2 OUT=eth2
> SRC=10.0.0.10 DST=10.0.0.4 LEN=48 TOS=0x00 PREC=0x00 TTL=127 ID=17593 DF
> PROTO=TCP SPT=4601 DPT=159 WINDOW=64240 RES=0x00 SYN URGP=0
>
> What is this? Port 158 and 159 apparently belong to
> BackupExec/NetBackup. 10.0.0.10 is our backup server, but why does it
> try and talk to 10.0.0.4 via the default router?
--
Tus problemas no se pueden resolver en el mismo
nivel mental que tenías cuando los creaste.
Albert Einstein
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Strange entries in /var/log/messages
2004-03-01 12:26 Strange entries in /var/log/messages Ray Leach
2004-03-01 12:29 ` Alexis
@ 2004-03-01 12:31 ` Antony Stone
2004-03-01 12:50 ` Ray Leach
1 sibling, 1 reply; 5+ messages in thread
From: Antony Stone @ 2004-03-01 12:31 UTC (permalink / raw)
To: Netfilter Mailing List
On Monday 01 March 2004 12:26 pm, Ray Leach wrote:
> Hi All
>
> Can anyone explain why a machine on 10.0.0.10/24 would try and
> communicate with another machine 10.0.0.4/24 via a router?
> Mar 1 14:19:37 firefly kernel: DROP FORWARD INTERNAL: IN=eth2 OUT=eth2
> SRC=10.0.0.10 DST=10.0.0.4 LEN=48 TOS=0x00 PREC=0x00 TTL=127 ID=17562 DF
> PROTO=TCP SPT=4601 DPT=159 WINDOW=64240 RES=0x00 SYN URGP=0
Bad routing table / netmask on 10.0.0.10?
Bad ARP cache entry?
10.0.0.4 sending silly ICMP redirects?
Strange network cabling arrangement :) ?
Regards,
Antony.
--
The truth is rarely pure, and never simple.
- Oscar Wilde
Please reply to the list;
please don't CC me.
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Strange entries in /var/log/messages
2004-03-01 12:29 ` Alexis
@ 2004-03-01 12:34 ` Alexis
0 siblings, 0 replies; 5+ messages in thread
From: Alexis @ 2004-03-01 12:34 UTC (permalink / raw)
To: Netfilter Mailing List
static or dynamic (learned from a routing protocol) but more specific.
On Mon, 2004-03-01 at 09:29, Alexis wrote:
> because a more specific static route?
>
>
>
> On Mon, 2004-03-01 at 09:26, Ray Leach wrote:
> > Hi All
> >
> > Can anyone explain why a machine on 10.0.0.10/24 would try and
> > communicate with another machine 10.0.0.4/24 via a router?
> > Mar 1 14:19:37 firefly kernel: DROP FORWARD INTERNAL: IN=eth2 OUT=eth2
> > SRC=10.0.0.10 DST=10.0.0.4 LEN=48 TOS=0x00 PREC=0x00 TTL=127 ID=17562 DF
> > PROTO=TCP SPT=4601 DPT=159 WINDOW=64240 RES=0x00 SYN URGP=0
> > Mar 1 14:19:37 firefly kernel: DROP FORWARD INTERNAL: IN=eth2 OUT=eth2
> > SRC=10.0.0.10 DST=10.0.0.4 LEN=48 TOS=0x00 PREC=0x00 TTL=127 ID=17563 DF
> > PROTO=TCP SPT=4602 DPT=158 WINDOW=64240 RES=0x00 SYN URGP=0
> > Mar 1 14:19:40 firefly kernel: DROP FORWARD INTERNAL: IN=eth2 OUT=eth2
> > SRC=10.0.0.10 DST=10.0.0.4 LEN=48 TOS=0x00 PREC=0x00 TTL=127 ID=17593 DF
> > PROTO=TCP SPT=4601 DPT=159 WINDOW=64240 RES=0x00 SYN URGP=0
> >
> > What is this? Port 158 and 159 apparently belong to
> > BackupExec/NetBackup. 10.0.0.10 is our backup server, but why does it
> > try and talk to 10.0.0.4 via the default router?
--
Tus problemas no se pueden resolver en el mismo
nivel mental que tenías cuando los creaste.
Albert Einstein
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Strange entries in /var/log/messages
2004-03-01 12:31 ` Antony Stone
@ 2004-03-01 12:50 ` Ray Leach
0 siblings, 0 replies; 5+ messages in thread
From: Ray Leach @ 2004-03-01 12:50 UTC (permalink / raw)
To: Netfilter Mailing List
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On Mon, 2004-03-01 at 14:31, Antony Stone wrote:
> On Monday 01 March 2004 12:26 pm, Ray Leach wrote:
>
> > Hi All
> >
> > Can anyone explain why a machine on 10.0.0.10/24 would try and
> > communicate with another machine 10.0.0.4/24 via a router?
> > Mar 1 14:19:37 firefly kernel: DROP FORWARD INTERNAL: IN=eth2 OUT=eth2
> > SRC=10.0.0.10 DST=10.0.0.4 LEN=48 TOS=0x00 PREC=0x00 TTL=127 ID=17562 DF
> > PROTO=TCP SPT=4601 DPT=159 WINDOW=64240 RES=0x00 SYN URGP=0
>
> Bad routing table / netmask on 10.0.0.10?
> Bad ARP cache entry?
> 10.0.0.4 sending silly ICMP redirects?
> Strange network cabling arrangement :) ?
>
Thanks for the pointers, checked all the above ...
Strange thing is that it (10.0.0.10) is communicating with 10.0.0.15
correctly (i.e. not via the router, but directly).
> Regards,
>
> Antony.
--
--
Raymond Leach <raymondl@knowledgefactory.co.za>
Network Support Specialist
http://www.knowledgefactory.co.za
"lynx -source http://www.rchq.co.za/raymondl.asc | gpg --import"
Key fingerprint = 7209 A695 9EE0 E971 A9AD 00EE 8757 EE47 F06F FB28
--
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[-- Type: application/pgp-signature, Size: 189 bytes --]
^ permalink raw reply [flat|nested] 5+ messages in thread
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2004-03-01 12:26 Strange entries in /var/log/messages Ray Leach
2004-03-01 12:29 ` Alexis
2004-03-01 12:34 ` Alexis
2004-03-01 12:31 ` Antony Stone
2004-03-01 12:50 ` Ray Leach
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