Brent Clark schrieb: > Hi list > > I soo close to pulling my hair out on this > > I have a webserver with the following ruleset (default policy of drop) > > $IPT -t filter -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT > $IPT -t filter -A INPUT -m state --state INVALID -j LOG --log-prefix > "INVALID input: " --log-tcp-options --log-ip-options > $IPT -t filter -A INPUT -m state --state INVALID -j DROP > $IPT -t filter -A INPUT -d 217.199.186.255 -j DROP > $IPT -t filter -A INPUT -p tcp --dport 80 -m state --state NEW -j ACCEPT > $IPT -t filter -A INPUT -p tcp --dport 20 -m state --state NEW -j ACCEPT > $IPT -t filter -A INPUT -p tcp --dport 21 -m state --state NEW -j ACCEPT > $IPT -t filter -A INPUT -p tcp --dport 25 -m state --state NEW -j ACCEPT > #$IPT -t filter -A INPUT -p tcp --dport 22 -m state --state NEW -j ACCEPT > $IPT -N SSH_Brute_Force > $IPT -A INPUT -p tcp --dport 22 -m state --state NEW -m recent --name > SSH --set --rsource -j SSH_Brute_Force > $IPT -A SSH_Brute_Force -s 196.36.10.114 -j ACCEPT > $IPT -A SSH_Brute_Force -m recent ! --rcheck --seconds 60 --hitcount 3 > --name SSH --rsource -j ACCEPT > $IPT -A SSH_Brute_Force -j LOG --log-prefix "SSH Brute Force Attempt: " > $IPT -A SSH_Brute_Force -p tcp -j DROP > > $IPT -t filter -A INPUT -p tcp --dport 10000 -m state --state NEW -j ACCEPT > $IPT -t filter -A INPUT -p tcp --dport 113 -j REJECT --reject-with > icmp-host-unreachable > $IPT -t filter -A INPUT -p tcp -m multiport --dport 135,137,139 -j DROP > $IPT -t filter -A INPUT -p icmp --icmp-type source-quench -j ACCEPT > $IPT -t filter -A INPUT -p icmp --icmp-type parameter-problem -j ACCEPT > $IPT -t filter -A INPUT -p icmp --icmp-type destination-unreachable -j > ACCEPT > $IPT -t filter -A INPUT -p icmp --icmp-type time-exceeded -j ACCEPT > $IPT -t filter -A INPUT -p icmp --icmp-type echo-request -j ACCEPT > #$IPT -t filter -A INPUT -p icmp --icmp-type ! echo-request -j LOG > $IPT -t filter -A INPUT -j LOG --log-prefix "[INPUT DROP]: " > --log-tcp-options --log-ip-options > $IPT -t filter -A INPUT -j DROP > > and for the likes on my I cant work out why I cant ping the machine > even localhost, does not return anything Is this really the complete rule set ? No rules in OUTPUT and FORWARD, but policy set to DROP ? Anyway. There is no rule for lo. Add $IPT -<I | A> INPUT -i lo -j ACCEPT $IPT -<I | A> OUTPUT -o lo -j ACCEPT and for echo reply add $IPT -A OUTPUT -p icmp --icmp-type echo-reply -j ACCEPT This should work. Have a nice time, Joerg
