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What hostname is a client using?


 
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# 1  
Old 10-10-2007
What hostname is a client using?

Is there a way to find out what name a client is using to connect to a server? For example: client is telnet'ing or ftp'ing to Server B.domain.com, using name C.domain.com. (B and C resolve to the same IP). Can we, on the server B find out that the client used C.domain.com to connect? I have tried tcpdump, but it prints out destination host B.domain.com, not C.domain.com which is because the IP on the server resolves to B.domain.com(hosts file).
# 2  
Old 10-10-2007
Not really, because as you say, both names resolve to the same IP address.

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