* 2.4.2 TCP window shrinking
@ 2001-03-02 17:26 Jim Woodward
2001-03-02 21:59 ` David S. Miller
0 siblings, 1 reply; 6+ messages in thread
From: Jim Woodward @ 2001-03-02 17:26 UTC (permalink / raw)
To: Linux Kernel
Hi All,
This has probably been covered but I saw this message in my logs and
wondered what it meant?
TCP: peer xxx.xxx.1.11:41154/80 shrinks window 2442047470:1072:2442050944.
Bad, what else can I say?
Is it potentially bad? - Ive only ever seen it twice with 2.4.x
Regards, Jim.
-
name : Jim Woodward
www : http://www.jim.southcom.com.au
email : jim@jim.southcom.com.au
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: 2.4.2 TCP window shrinking
2001-03-02 17:26 2.4.2 TCP window shrinking Jim Woodward
@ 2001-03-02 21:59 ` David S. Miller
2001-03-03 1:27 ` Phil Brutsche
` (2 more replies)
0 siblings, 3 replies; 6+ messages in thread
From: David S. Miller @ 2001-03-02 21:59 UTC (permalink / raw)
To: Jim Woodward; +Cc: Linux Kernel
Jim Woodward writes:
> This has probably been covered but I saw this message in my logs and
> wondered what it meant?
>
> TCP: peer xxx.xxx.1.11:41154/80 shrinks window 2442047470:1072:2442050944.
> Bad, what else can I say?
>
> Is it potentially bad? - Ive only ever seen it twice with 2.4.x
We need desperately to know exactly what OS the xxx.xxx.1.14 machine
is running. Because you've commented out the first two octets, I
cannot check this myself using nmap.
Later,
David S. Miller
davem@redhat.com
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: 2.4.2 TCP window shrinking
2001-03-02 21:59 ` David S. Miller
@ 2001-03-03 1:27 ` Phil Brutsche
2001-03-03 2:05 ` Jesse Wyant
2001-03-03 2:44 ` David
2001-03-03 10:09 ` green
2 siblings, 1 reply; 6+ messages in thread
From: Phil Brutsche @ 2001-03-03 1:27 UTC (permalink / raw)
To: David S. Miller; +Cc: Linux Kernel
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
A long time ago, in a galaxy far, far way, someone said...
>
> Jim Woodward writes:
> > This has probably been covered but I saw this message in my logs and
> > wondered what it meant?
> >
> > TCP: peer xxx.xxx.1.11:41154/80 shrinks window 2442047470:1072:2442050944.
> > Bad, what else can I say?
> >
> > Is it potentially bad? - Ive only ever seen it twice with 2.4.x
>
> We need desperately to know exactly what OS the xxx.xxx.1.14 machine
> is running. Because you've commented out the first two octets, I
> cannot check this myself using nmap.
I'm seeing similar messages on a web server running 2.4.2.
Some of hosts I've seen it with are:
205.188.208.172
209.240.220.172
209.240.220.173
209.240.220.174
209.240.220.176
209.240.220.177
216.239.46.17
216.239.46.27
216.239.46.34
216.239.46.168
130.239.126.113
206.190.23.112
193.130.225.253
- --
- ----------------------------------------------------------------------
Phil Brutsche pbrutsch@tux.creighton.edu
GPG fingerprint: 9BF9 D84C 37D0 4FA7 1F2D 7E5E FD94 D264 50DE 1CFC
GPG key id: 50DE1CFC
GPG public key: http://tux.creighton.edu/~pbrutsch/gpg-public-key.asc
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.0.4 (GNU/Linux)
Comment: For info see http://www.gnupg.org
iD8DBQE6oEie/ZTSZFDeHPwRAg4UAKChgEkHgE84Q1OWsB5faZczFrFLjACdGkul
sViRgWXfFAlKa3W9V8+RAYs=
=wkJl
-----END PGP SIGNATURE-----
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: 2.4.2 TCP window shrinking
2001-03-03 1:27 ` Phil Brutsche
@ 2001-03-03 2:05 ` Jesse Wyant
0 siblings, 0 replies; 6+ messages in thread
From: Jesse Wyant @ 2001-03-03 2:05 UTC (permalink / raw)
To: linux-kernel
Similar situation here: vanilla 2.4.2, with web serving/ftp/hotline/napster/etc.,
and I get this:
TCP: peer 148.75.118.138:1360/6699 shrinks window 3200785160:0:3200795086. Bad, what else can I say?
TCP: peer 148.75.118.138:1359/6699 shrinks window 3054879436:0:3054885108. Bad, what else can I say?
TCP: peer 148.75.118.138:1360/6699 shrinks window 3201450202:0:3201458710. Bad, what else can I say?
TCP: peer 148.75.118.138:1361/6699 shrinks window 3317649733:0:3317653987. Bad, what else can I say?
TCP: peer 148.75.118.138:1359/6699 shrinks window 3054934738:0:3054940410. Bad, what else can I say?
TCP: peer 148.75.118.138:1357/6699 shrinks window 2520518983:0:2520527491. Bad, what else can I say?
TCP: peer 148.75.118.138:1359/6699 shrinks window 3054990040:0:3054995712. Bad, what else can I say?
TCP: peer 148.75.118.138:1359/6699 shrinks window 3055011310:0:3055014146. Bad, what else can I say?
TCP: peer 148.75.118.138:1360/6699 shrinks window 3201522520:0:3201528192. Bad, what else can I say?
TCP: peer 148.75.118.138:1357/6699 shrinks window 2520598391:0:2520599809. Bad, what else can I say?
TCP: peer 148.75.118.138:1359/6699 shrinks window 3055146020:0:3055148856. Bad, what else can I say?
TCP: peer 148.75.118.138:1361/6699 shrinks window 3317713543:0:3317723469. Bad, what else can I say?
TCP: peer 148.75.118.138:1360/6699 shrinks window 3201592002:0:3201599092. Bad, what else can I say?
TCP: peer 148.75.118.138:1360/6699 shrinks window 3201593420:0:3201599092. Bad, what else can I say?
TCP: peer 148.75.118.138:1357/6699 shrinks window 2520676381:0:2520680635. Bad, what else can I say?
TCP: peer 148.75.118.138:1360/6699 shrinks window 3201607600:0:3201614690. Bad, what else can I say?
Running nmap (v2.53) on that IP doesn't resolve to a known OS, so that doesn't help. Version 2.54BETA7
gives this output:
Starting nmap V. 2.54BETA7 ( www.insecure.org/nmap/ )
Warning: OS detection will be MUCH less reliable because we did not find at least 1 open and 1 closed TCP port
All 1534 scanned ports on vsat-148-75-118-138.ssa7.mcl.starband.net (148.75.118.138) are: filtered
Remote OS guesses: Apple LaserWriter 16/600 PS, HP 6P, or HP 5 Printer, Apple LaserWriter 8500 (PostScript version 3010.103), MultiTech MultiVOIP Version 2.01A Firmware, Mulit-Tech standalone firewall box, version 3, MultiTech CommPlete (modem server) RAScard, Xerox 8830 Plotter, Xerox DocuPrint C55, Xerox DocuPrint N40
Nmap run completed -- 1 IP address (1 host up) scanned in 163 seconds
So that doesn't appear to help too much either.
>
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> A long time ago, in a galaxy far, far way, someone said...
>
> >
> > Jim Woodward writes:
> > > This has probably been covered but I saw this message in my logs and
> > > wondered what it meant?
> > >
> > > TCP: peer xxx.xxx.1.11:41154/80 shrinks window 2442047470:1072:2442050944.
> > > Bad, what else can I say?
> > >
> > > Is it potentially bad? - Ive only ever seen it twice with 2.4.x
> >
> > We need desperately to know exactly what OS the xxx.xxx.1.14 machine
> > is running. Because you've commented out the first two octets, I
> > cannot check this myself using nmap.
>
> I'm seeing similar messages on a web server running 2.4.2.
>
> Some of hosts I've seen it with are:
>
> 205.188.208.172
> 209.240.220.172
> 209.240.220.173
> 209.240.220.174
> 209.240.220.176
> 209.240.220.177
> 216.239.46.17
> 216.239.46.27
> 216.239.46.34
> 216.239.46.168
> 130.239.126.113
> 206.190.23.112
> 193.130.225.253
>
> - --
> - ----------------------------------------------------------------------
> Phil Brutsche pbrutsch@tux.creighton.edu
>
> GPG fingerprint: 9BF9 D84C 37D0 4FA7 1F2D 7E5E FD94 D264 50DE 1CFC
> GPG key id: 50DE1CFC
> GPG public key: http://tux.creighton.edu/~pbrutsch/gpg-public-key.asc
>
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v1.0.4 (GNU/Linux)
> Comment: For info see http://www.gnupg.org
>
> iD8DBQE6oEie/ZTSZFDeHPwRAg4UAKChgEkHgE84Q1OWsB5faZczFrFLjACdGkul
> sViRgWXfFAlKa3W9V8+RAYs=
> =wkJl
> -----END PGP SIGNATURE-----
>
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/
>
Jesse Wyant - jrwyant@frx774.dhs.org
------------------------------------------------------------
I never met a man I didn't want to fight.
-- Lyle Alzado, professional football lineman
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: 2.4.2 TCP window shrinking
2001-03-02 21:59 ` David S. Miller
2001-03-03 1:27 ` Phil Brutsche
@ 2001-03-03 2:44 ` David
2001-03-03 10:09 ` green
2 siblings, 0 replies; 6+ messages in thread
From: David @ 2001-03-03 2:44 UTC (permalink / raw)
To: David S. Miller; +Cc: Jim Woodward, Linux Kernel
David S. Miller wrote:
> We need desperately to know exactly what OS the xxx.xxx.1.14 machine
> is running. Because you've commented out the first two octets, I
> cannot check this myself using nmap.
I see them all the time on my sites. I have active mirrors so they
abound. Here are a few, I've also attached nmap's guesses.
TCP: peer 148.75.156.238:1025/7000 shrinks window
3317772066:0:3317772330. Bad, what else can I say?
TCP: peer 195.226.233.21:1774/6660 shrinks window
2502834461:2920:2502837525. Bad, what else can I say?
TCP: peer 195.39.136.145:1702/7000 shrinks window
2750401402:2920:2750405782. Bad, what else can I say?
TCP: peer 213.189.87.228:1190/6660 shrinks window
2933193691:1072:2933194827. Bad, what else can I say?
#1, unknown
#2, running proxy squid/2.3.stable4, can't tell what OS is on it.
#3, unknown
#4, unknown
#2 and #4 both have the following in http headers:
Via: 1.1 netcache (NetCache 4.1R6)
-d
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: 2.4.2 TCP window shrinking
2001-03-02 21:59 ` David S. Miller
2001-03-03 1:27 ` Phil Brutsche
2001-03-03 2:44 ` David
@ 2001-03-03 10:09 ` green
2 siblings, 0 replies; 6+ messages in thread
From: green @ 2001-03-03 10:09 UTC (permalink / raw)
To: davem, linux-kernel
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain; charset=US-ASCII, Size: 7564 bytes --]
Hello!
In article <15008.6084.410042.53699@pizda.ninka.net> you wrote:
> > TCP: peer xxx.xxx.1.11:41154/80 shrinks window 2442047470:1072:2442050944.
> > Bad, what else can I say?
> We need desperately to know exactly what OS the xxx.xxx.1.14 machine
> is running. Because you've commented out the first two octets, I
> cannot check this myself using nmap.
Hope that helps:
TCP: peer 192.115.216.67:4965/80 shrinks window 1189646194:1024:1189647309. Bad, what else can I say?
TCP: peer 192.115.216.66:48184/80 shrinks window 1233448155:1024:1233449294. Bad, what else can I say?
TCP: peer 192.115.216.67:4388/80 shrinks window 2353869396:1024:2353870499. Bad, what else can I say?
TCP: peer 212.100.133.70:2228/80 shrinks window 3072654250:512:3072655786. Bad, what else can I say?
TCP: peer 212.100.133.70:2228/80 shrinks window 3072657834:512:3072659370. Bad, what else can I say?
TCP: peer 212.100.133.70:2228/80 shrinks window 3072658346:0:3072659370. Bad, what else can I say?
TCP: peer 212.100.133.70:2228/80 shrinks window 3072658346:512:3072659370. Bad, what else can I say?
TCP: peer 212.100.133.70:2243/80 shrinks window 3126499925:512:3126501461. Bad, what else can I say?
TCP: peer 212.100.133.70:2243/80 shrinks window 3126500437:0:3126501461. Bad, what else can I say?
TCP: peer 212.100.133.70:2243/80 shrinks window 3126500437:512:3126501461. Bad, what else can I say?
TCP: peer 212.100.133.70:2243/80 shrinks window 3126503509:512:3126504533. Bad, what else can I say?
TCP: peer 212.100.133.70:2243/80 shrinks window 3126505045:512:3126505591. Bad, what else can I say?
TCP: peer 212.100.133.70:2243/80 shrinks window 3126505557:0:3126505591. Bad, what else can I say?
TCP: peer 168.97.99.66:1759/80 shrinks window 3811940743:1460:3811943663. Bad, what else can I say?
TCP: peer 192.115.216.67:1117/80 shrinks window 821320812:1024:821321847. Bad, what else can I say?
TCP: peer 194.85.201.96:1231/80 shrinks window 1491890080:3072:1491893832. Bad, what else can I say?
TCP: peer 194.85.201.96:1231/80 shrinks window 1491894368:3072:1491898120. Bad, what else can I say?
TCP: peer 194.85.202.100:3072/80 shrinks window 1517168757:1536:1517171677. Bad, what else can I say?
TCP: peer 147.226.5.4:18052/80 shrinks window 3091312994:2864:3091316312. Bad, what else can I say?
TCP: peer 208.152.106.86:1496/80 shrinks window 1047754391:1072:1047755999. Bad, what else can I say?
TCP: peer 193.235.226.2:57881/80 shrinks window 3860496316:2920:3860503895. Bad, what else can I say?
TCP: peer 199.103.141.186:4260/80 shrinks window 1544210503:4380:1544216343. Bad, what else can I say?
TCP: peer 194.85.204.37:62553/80 shrinks window 1582101904:0:1582101905. Bad, what else can I say?
TCP: peer 168.97.99.66:4077/80 shrinks window 2705297980:1460:2705300900. Bad, what else can I say?
TCP: peer 194.85.201.4:1483/80 shrinks window 3797292442:0:3797293210. Bad, what else can I say?
TCP: peer 194.85.201.4:1483/80 shrinks window 3797293978:0:3797294746. Bad, what else can I say?
TCP: peer 194.85.201.4:1483/80 shrinks window 3797295514:0:3797296282. Bad, what else can I say?
TCP: peer 194.85.201.4:1483/80 shrinks window 3797297050:0:3797297818. Bad, what else can I say?
TCP: peer 194.85.201.4:1483/80 shrinks window 3797298586:0:3797299354. Bad, what else can I say?
TCP: peer 168.97.99.66:2466/80 shrinks window 879491421:1460:879494341. Bad, what else can I say?
TCP: peer 140.140.59.101:2839/80 shrinks window 2408864318:1460:2408867238. Bad, what else can I say?
TCP: peer 209.47.130.2:2166/80 shrinks window 2408449733:1072:2408450854. Bad, what else can I say?
TCP: peer 194.85.201.4:1988/80 shrinks window 2620331555:0:2620332323. Bad, what else can I say?
TCP: peer 194.85.201.4:1988/80 shrinks window 2620333091:0:2620333859. Bad, what else can I say?
TCP: peer 194.85.201.4:1988/80 shrinks window 2620334627:0:2620335395. Bad, what else can I say?
TCP: peer 213.189.85.106:1875/80 shrinks window 3265282896:2920:3265290197. Bad, what else can I say?
TCP: peer 204.100.181.6:3081/80 shrinks window 3215499301:2920:3215503041. Bad, what else can I say?
TCP: peer 140.228.46.0:1218/80 shrinks window 3743350500:1072:3743351700. Bad, what else can I say?
TCP: peer 212.248.7.86:2382/80 shrinks window 3235025401:512:3235026937. Bad, what else can I say?
TCP: peer 195.129.34.34:51780/80 shrinks window 1301988509:2920:1301992794. Bad, what else can I say?
TCP: peer 195.75.131.34:34715/80 shrinks window 4249402792:1024:4249404950. Bad, what else can I say?
TCP: peer 195.75.131.34:34715/80 shrinks window 4249403304:1024:4249404950. Bad, what else can I say?
TCP: peer 195.75.131.34:34715/80 shrinks window 4249403816:1024:4249404950. Bad, what else can I say?
TCP: peer 193.235.226.2:19253/80 shrinks window 180598643:2920:180603811. Bad, what else can I say?
TCP: peer 194.85.202.123:1713/80 shrinks window 2313955067:0:2313955161. Bad, what else can I say?
TCP: peer 193.235.226.2:50139/80 shrinks window 2386493452:2920:2386498376. Bad, what else can I say?
TCP: peer 193.235.226.2:54973/80 shrinks window 2445719253:2920:2445722177. Bad, what else can I say?
TCP: peer 193.235.226.2:21774/80 shrinks window 2667266701:2920:2667274191. Bad, what else can I say?
TCP: peer 194.85.201.67:4945/80 shrinks window 4057913997:0:4057914765. Bad, what else can I say?
TCP: peer 194.85.201.67:4945/80 shrinks window 4057915533:0:4057916301. Bad, what else can I say?
TCP: peer 194.85.201.67:4945/80 shrinks window 4057919373:0:4057920141. Bad, what else can I say?
TCP: peer 194.85.201.67:4945/80 shrinks window 4057920909:0:4057921677. Bad, what else can I say?
TCP: peer 194.85.201.67:4945/80 shrinks window 4057922445:0:4057923213. Bad, what else can I say?
TCP: peer 194.85.201.67:1050/80 shrinks window 4242245882:0:4242246650. Bad, what else can I say?
TCP: peer 194.85.201.67:1050/80 shrinks window 4242248186:0:4242248954. Bad, what else can I say?
TCP: peer 194.85.201.67:1050/80 shrinks window 4242252794:0:4242253562. Bad, what else can I say?
TCP: peer 194.85.201.67:1050/80 shrinks window 4242254330:0:4242255098. Bad, what else can I say?
TCP: peer 194.85.201.67:1050/80 shrinks window 4242257402:0:4242258063. Bad, what else can I say?
TCP: peer 194.85.201.4:1411/80 shrinks window 2629285337:0:2629286105. Bad, what else can I say?
TCP: peer 194.85.201.4:1411/80 shrinks window 2629286873:0:2629287641. Bad, what else can I say?
TCP: peer 194.85.201.4:1411/80 shrinks window 2629292249:0:2629293017. Bad, what else can I say?
TCP: peer 194.85.201.4:1519/80 shrinks window 3119239302:0:3119240070. Bad, what else can I say?
TCP: peer 171.31.0.10:7866/80 shrinks window 3204908317:1460:3204911007. Bad, what else can I say?
TCP: peer 194.85.201.4:1555/80 shrinks window 3267511310:0:3267512078. Bad, what else can I say?
TCP: peer 194.85.201.4:1555/80 shrinks window 3267512846:0:3267513614. Bad, what else can I say?
TCP: peer 194.85.201.4:1555/80 shrinks window 3267514382:0:3267515088. Bad, what else can I say?
TCP: peer 163.162.71.174:43725/80 shrinks window 3590587728:2920:3590592038. Bad, what else can I say?
TCP: peer 213.181.149.4:17078/80 shrinks window 3631534953:6210:3631541193. Bad, what else can I say?
TCP: peer 168.97.99.66:8696/80 shrinks window 3752919838:à007:3752922758. Bad, what else can I say?
TCP: peer 194.85.201.67:3312/80 shrinks window 3849647421:0:3849648189. Bad, what else can I say?
TCP: peer 194.85.201.67:3312/80 shrinks window 3849648957:0:3849649725. Bad, what else can I say?
TCP: peer 194.85.201.67:3312/80 shrinks window 3849650493:0:3849651261. Bad, what else can I say?
Bye,
Oleg
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2001-03-03 10:10 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2001-03-02 17:26 2.4.2 TCP window shrinking Jim Woodward
2001-03-02 21:59 ` David S. Miller
2001-03-03 1:27 ` Phil Brutsche
2001-03-03 2:05 ` Jesse Wyant
2001-03-03 2:44 ` David
2001-03-03 10:09 ` green
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