galtsev at kicp.uchicago.edu
Sat Nov 26 20:39:16 UTC 2016
On Sat, November 26, 2016 1:59 pm, Ernie Luzar wrote:
> Bernt Hansson wrote:
>> On 2016-11-26 19:19, Ernie Luzar wrote:
>>> Running 11.0 release, ipfilter firewall with rules to block inbound
>>> port 21, 25, 110. Nmap shows those ports are open even though the
>>> firewall is blocking them. Is this expected?
>> You are testing them from the "outside"
> Issued this command from the command line of the host.
> IE; not from some host on the public net.
> nmap -v xxx.xxx.xxx.xxx x = host public IP address
As Bernt Hansson has mentioned, this command should have been executed on
different host. You are testing rile for _inbound_ traffic, that is why
different host, not the machine itself.
I hope this helps.
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Sr System Administrator
Department of Astronomy and Astrophysics
Kavli Institute for Cosmological Physics
University of Chicago
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