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From: Gary Aitken <freebsd@dreamchaser.org>
Subject: ARP issue, samba standalone connection problem
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Trying to set up samba for the first time (4.7), local file sharing only.

I have the server set up and can connect / log-on locally using smbclient.

However, I can't connect from a win7 system;
with log level set to 2 nothing shows up in /var/log/samba4/log.smbd

Snooping packets, all I see is:
(122 is fbsd samba machine; 123 is win7)

ARP, Request who-has 192.168.151.122 tell 192.168.151.123, length 46
IP 192.168.151.123.50031 > 192.168.151.122.80: Flags [S], seq 2200471361, win 8192, options [mss 1460,nop,wscale 2,nop,nop,sackOK], length 0
IP 192.168.151.122.80 > 192.168.151.123.50031: Flags [R.], seq 0, ack 2200471362, win 0, length 0
IP 192.168.151.123.50031 > 192.168.151.122.80: Flags [S], seq 2200471361, win 8192, options [mss 1460,nop,wscale 2,nop,nop,sackOK], length 0
IP 192.168.151.122.80 > 192.168.151.123.50031: Flags [R.], seq 0, ack 1, win 0, length 0
IP 192.168.151.123.50031 > 192.168.151.122.80: Flags [S], seq 2200471361, win 8192, options [mss 1460,nop,nop,sackOK], length 0
IP 192.168.151.122.80 > 192.168.151.123.50031: Flags [R.], seq 0, ack 1, win 0, length 0
ARP, Request who-has 192.168.151.112 tell 192.168.151.123, length 46

Questions:

Why isn't the fbsd machine replying to the ARP requests?
Any idea why the win7 machine is hitting port 80?
Why is port 80 on the fbsd system replying
    instead of simply dropping the packet?
   (there's no httpd running)
  
pings work both ways.

Thanks for any insights,

Gary