On 4 May, Bruce wrote:
> Go ahead and block.
>
> Port 111 is the Sun Remore Procedure call an unless you are wanting to
> offer such services to other Sun systems, then block it out.
>
> Use REJECT rather than DENY - it tells the Sun system to forget it.
> You will get log entries if you use the -l option but they make interesting
> reading.
>
> Unrelated but for security purposes, block 113 and 137.
> Look at /etc/services. (grep 113 /etc/services)
113 is currently blocked, but generates its share of logs. It seems to
happen when sendmail connects (makes a reverse connection to 113). Why
is that? To verify the sender? And how do I stop it?
> If you DON'T want people to telnet in, block 23 - but you probably
> know that already.
>
> Regards,
> Bruce.
>
>
>>what is the port 111 on redhat? what would be the consequences of blocking
>>it in the firewall?
>>
>>
>>
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--
Kind regards,
Berend
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Berend De Schouwer, +27-11-712-1435, UCS
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