Open ports on FC2
John Dangler
jdangler at atlantic.net
Sat Jul 24 19:47:25 UTC 2004
-----Original Message-----
From: fedora-list-bounces at redhat.com [mailto:fedora-list-bounces at redhat.com]
On Behalf Of Chris Hewitt
Sent: Saturday, July 24, 2004 3:06 PM
To: For users of Fedora Core releases
Subject: Re: Open ports on FC2
On Sat, 2004-07-24 at 19:30, John Dangler wrote:
> I went to the ShieldsUP!!! site and ran the file sharing and common ports
> tests. According to the results, I allowed ping to reply to their server
> via ICMP echo, and I have port 21 (ftp) and 23 (telnet) open. How do I:
>
> (1) block/ignore ICMP echo requests
> (2) Tell inquirers that ports 21 and 23 exist but are closed to
connections
John,
>Unless you need ftp and telnet, I suggest you shut them down:
I don't
>service vsftpd stop
vsftpd isn't running (nor is any other ftp service)
>Telnet is part of the xinetd super-server. Edit /etc/xinetd.d/telnet and
>change the line:
>disable = no
>to
>disable = yes
I don't have a 'telnet' file in /etc/xinetd.d
>You can check open ports by doing:
>nmap localhost
nmap localhost reveals:
22/tcp open SSH
25/tcp open smtp
111/tcp open rpcbind
631/tcp open ipp
3306/tcp open mysql
32770/tcp open sometimes-rpc3
32771/tcp open sometimes-rpc5
Nmap run completed -- 1 IP address (1 host up) scanned in 1.433 seconds
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