Re: 2.4.2 TCP window shrinking

David (david@blue-labs.org)
Fri, 02 Mar 2001 18:44:12 -0800


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

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