RES: [FUGSPBR] NAT, IPFW e cia
Marcello Silva Coutinho
marcelloc em trf1.gov.br
Seg Set 9 15:26:23 BRT 2002
> Podem me dizer se o NATD/IPFW se da bem com aqueles protocolos mais
> "chatinhos" que requerem IP CRONTRACK ? estilo, DCC-SEND, em IRC, Envio
> de arquivos por Licq, realaudio streaming, e coisas do tipo?
no 'man natd', voce encontra:
-punch_fw basenumber:count
This option directs natd to ``punch holes'' in an
ipfirewall(4) based firewall for FTP/IRC DCC connections.
This is done dynamically by installing temporary firewall
rules which allow a particular connection (and only that
con
nection) to go through the firewall. The rules are removed
once the corresponding connection terminates.
A maximum of count rules starting from the rule number
basenumber will be used for punching firewall holes. The
range will be cleared for all rules on startup.
-same_ports | -m
Try to keep the same port number when altering outgoing
pack
ets. With this option, protocols such as RPC will have a
better chance of working. If it is not possible to
maintain
the port number, it will be silently changed as per normal.
att,
Marcello Silva Coutinho
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