Re: Strange response from network

[Ben Timby <asp () webexc com>]

Shashank Rai wrote:

> My questions:
> a) any idea what kind of filtering system can this be

My guess is that hop 7 is home of a firewall of some sort. I don't have 
any recollection of one that would act this way, perhaps it's internal 
rule processing causes it to RST connections when it expires ttl. I 
don't know, perhaps another list member would know what device or 
firewall software would behave in such a manner.

> b) is it possible to determine the IP of the 7th HOP.

Regarding the port number, my guess is that port 2443 is the 2nd SSL 
server 2 + 443 (443 = SSL). Nmap simply uses the common ports database 
to guess what service generally resides at the open port it found. For 
instance, if I ran my FTP server on port 22, nmap would detect it as an 
SSH server. I think there is a switch to have it grab the banner for 
you, but I have not used this feature.

Hope that helps.

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