nptd and firewall

[Aleksandar Milivojevic]

Robert Nichols wrote:
> John DeDourek wrote:
> 
>> UNFORTUNATELY, I don't remember which version of firewall
>> (ipchains or iptables) is installed by default for fc ONE
>> (which was specified in the original query) and I have no
>> way of knowing whether this was changed by the author of the
>> question.
> 
> 
> FC-1 defaulted to iptables, so there should be no change needed
> to run ntpd as a non-serving client.  Red Hat 7.x used ipchains,
> so running ntpd required opening up port 123/udp.  Even with a
> default ipchains configuration, you could still run ntpdate (not
> ntpd) if you used its "-u" option to use an unprivileged port.

RH 7.x used iptables (at least since 7.1).  There was backward 
compatible interface for ipchains.  Under the hood (in the kernel), it 
was Netfilter, just as in FC3 (well, older version of it, of course).

-- 
Aleksandar Milivojevic <amilivojevic at pbl.ca>    Pollard Banknote Limited
Systems Administrator                           1499 Buffalo Place
Tel: (204) 474-2323 ext 276                     Winnipeg, MB  R3T 1L7