bonjour,
j’ai vu ceci dans /etc/dtc
root@alpha30:/etc/dtc# pg general-firewall
general-in () {
#Allow localhost.
${IPTABLES} -A ${GENERAL_IN_CHAIN} -i lo -j ACCEPT
## Allow established connection
${IPTABLES} -A ${GENERAL_IN_CHAIN} -m state --state ESTABLISHED,RELATED -j ACCEPT
## Drop scans XMAS and NULL
${IPTABLES} -A ${GENERAL_IN_CHAIN} -p tcp --tcp-flags FIN,URG,PSH FIN,URG,PSH -j DROP
${IPTABLES} -A ${GENERAL_IN_CHAIN} -p tcp --tcp-flags ALL ALL -j DROP
${IPTABLES} -A ${GENERAL_IN_CHAIN} -p tcp --tcp-flags ALL NONE -j DROP
${IPTABLES} -A ${GENERAL_IN_CHAIN} -p tcp --tcp-flags SYN,RST SYN,RST -j DROP
## Silent drop broadcast
${IPTABLES} -A ${GENERAL_IN_CHAIN} -m pkttype --pkt-type broadcast -j DROP
# Allow pings
${IPTABLES} -A ${GENERAL_IN_CHAIN} -p icmp -j ACCEPT
# Allow incoming to servers
# DNS
${IPTABLES} -A ${GENERAL_IN_CHAIN} -p udp -i ${INTERFACE} --dport 53 -j ACCEPT
${IPTABLES} -A ${GENERAL_IN_CHAIN} -p tcp -i ${INTERFACE} --dport 53 -j ACCEPT
# SSH
${IPTABLES} -A ${GENERAL_IN_CHAIN} -p tcp -i ${INTERFACE} --dport 22 -j ACCEPT
# HTTP
${IPTABLES} -A ${GENERAL_IN_CHAIN} -p tcp -i ${INTERFACE} --dport 80 -j ACCEPT
${IPTABLES} -A ${GENERAL_IN_CHAIN} -p tcp -i ${INTERFACE} --dport 443 -j ACCEPT
# SMTP
${IPTABLES} -A ${GENERAL_IN_CHAIN} -p tcp -i ${INTERFACE} --dport 25 -j ACCEPT
${IPTABLES} -A ${GENERAL_IN_CHAIN} -p tcp -i ${INTERFACE} --dport 465 -j ACCEPT
${IPTABLES} -A ${GENERAL_IN_CHAIN} -p tcp -i ${INTERFACE} --dport 587 -j ACCEPT
# FTP
${IPTABLES} -A ${GENERAL_IN_CHAIN} -p tcp -i ${INTERFACE} --dport 21 -j ACCEPT
${IPTABLES} -A ${GENERAL_IN_CHAIN} -p tcp -i ${INTERFACE} --dport 20 -j ACCEPT
#${IPTABLES} -A ${GENERAL_IN_CHAIN} -p tcp --dport 21 -m state --state NEW,ESTABLISHED -j ACCEPT
# POP
${IPTABLES} -A ${GENERAL_IN_CHAIN} -p tcp -i ${INTERFACE} --dport 110 -j ACCEPT
${IPTABLES} -A ${GENERAL_IN_CHAIN} -p tcp -i ${INTERFACE} --dport 995 -j ACCEPT
# IMAP
${IPTABLES} -A ${GENERAL_IN_CHAIN} -p tcp -i ${INTERFACE} --dport 143 -j ACCEPT
${IPTABLES} -A ${GENERAL_IN_CHAIN} -p tcp -i ${INTERFACE} --dport 993 -j ACCEPT
# SIEVE
# ${IPTABLES} -A ${GENERAL_IN_CHAIN} -p tcp -i ${INTERFACE} --dport 2000 -j ACCEPT
## Log incoming traffic
${IPTABLES} -A ${GENERAL_IN_CHAIN} -m limit --limit 5/min -j LOG --log-prefix '** Incoming **' --log-level 7
## Drop incomming traffic
${IPTABLES} -P INPUT DROP
}
general-out () {
#Allow localhost.
${IPTABLES} -A ${GENERAL_OUT_CHAIN} -i lo -j ACCEPT
## Allow all except invalid state
${IPTABLES} -A ${GENERAL_OUT_CHAIN} -m state ! --state INVALID -j ACCEPT
# Drop outgoing traffic
${IPTABLES} -P OUTPUT DROP
}
general-for () {
## Log outgoing traffic
${IPTABLES} -A ${GENERAL_FOR_CHAIN} -m limit --limit 5/min -j LOG --log-prefix '** Forward **' --log-level 7
## Drop forward traffic
${IPTABLES} -P FORWARD DROP
}
la dernière directive est de bon aloi
pour moi ce produit est INCOMPLET et à COMPLETER
produit daté de 1/09/2012 dans debian expérimental
on est revenu à la 2.2
pour info c’est du caca boudin pour l’arreter
A+
JB1 