2015年8月12日水曜日

dhcpd server にする、 grub

internet
|
wifi router
|
wlp0s29f7u1
arch
enp9s0:192.168.11.1
|
dhcp
debian

という構成です。
 

ifconfig enp9s0 192.168.11.1
でまず enp9s0
にアドレスをあてます。









それから dhcpd サーバーを構成します。
 /etc/dnsmasq.conf
server=/11.168.192.in-addr.arpa/8.8.8.8
interface=enp9s0
dhcp-range=192.168.11.50,192.168.11.150,12h




1行めで ネームサーバーを指定してます。






内のを外に出すために morizotを利用します

morizot.bat
SYSCTL="/sbin/sysctl -w"
IPT="/usr/sbin/iptables"
IPTS="/usr/sbin/iptables-save"
IPTR="/usr/sbin/iptables-restore"
INET_IFACE="wlp0s29f7u1"
LOCAL_IFACE="enp9s0"
LOCAL_IP="192.168.11.1"
LOCAL_NET="192.168.11.0/24"
LOCAL_BCAST="192.168.11.255"
LO_IFACE="lo"
LO_IP="127.0.0.1"
if [ "$1" = "save" ]
then
    echo -n "Saving firewall to /etc/sysconfig/iptables ... "
    $IPTS > /etc/sysconfig/iptables
    echo "done"
    exit 0
elif [ "$1" = "restore" ]
then
    echo -n "Restoring firewall from /etc/sysconfig/iptables ... "
    $IPTR < /etc/sysconfig/iptables
    echo "done"
    exit 0
fi
echo "Loading kernel modules ..."
/sbin/modprobe ip_tables
/sbin/modprobe ip_conntrack
/sbin/modprobe ip_nat_ftp
/sbin/modprobe ip_conntrack_ftp
/sbin/modprobe ip_conntrack_irc
if [ "$SYSCTL" = "" ]
then
    echo "1" > /proc/sys/net/ipv4/ip_forward
else
    $SYSCTL net.ipv4.ip_forward="1"
fi
if [ "$SYSCTL" = "" ]
then
    echo "1" > /proc/sys/net/ipv4/tcp_syncookies
else
    $SYSCTL net.ipv4.tcp_syncookies="1"
fi
if [ "$SYSCTL" = "" ]
then
    echo "1" > /proc/sys/net/ipv4/conf/all/rp_filter
else
    $SYSCTL net.ipv4.conf.all.rp_filter="1"
fi
if [ "$SYSCTL" = "" ]
then
    echo "1" > /proc/sys/net/ipv4/icmp_echo_ignore_broadcasts
else
    $SYSCTL net.ipv4.icmp_echo_ignore_broadcasts="1"
fi
if [ "$SYSCTL" = "" ]
then
    echo "0" > /proc/sys/net/ipv4/conf/all/accept_source_route
else
    $SYSCTL net.ipv4.conf.all.accept_source_route="0"
fi
if [ "$SYSCTL" = "" ]
then
    echo "1" > /proc/sys/net/ipv4/conf/all/secure_redirects
else
    $SYSCTL net.ipv4.conf.all.secure_redirects="1"
fi
if [ "$SYSCTL" = "" ]
then
    echo "1" > /proc/sys/net/ipv4/conf/all/log_martians
else
    $SYSCTL net.ipv4.conf.all.log_martians="1"
fi
echo "Flushing Tables ..."
$IPT -P INPUT ACCEPT
$IPT -P FORWARD ACCEPT
$IPT -P OUTPUT ACCEPT
$IPT -t nat -P PREROUTING ACCEPT
$IPT -t nat -P POSTROUTING ACCEPT
$IPT -t nat -P OUTPUT ACCEPT
$IPT -t mangle -P PREROUTING ACCEPT
$IPT -t mangle -P OUTPUT ACCEPT
$IPT -F
$IPT -t nat -F
$IPT -t mangle -F
$IPT -X
$IPT -t nat -X
$IPT -t mangle -X
if [ "$1" = "stop" ]
then
    echo "Firewall completely flushed!  Now running with no firewall."
    exit 0
fi
$IPT -P INPUT DROP
$IPT -P OUTPUT DROP
$IPT -P FORWARD DROP
echo "Create and populate custom rule chains ..."
$IPT -N bad_packets
$IPT -N bad_tcp_packets
$IPT -N icmp_packets
$IPT -N udp_inbound
$IPT -N udp_outbound
$IPT -N tcp_inbound
$IPT -N tcp_outbound
$IPT -A bad_packets -p ALL -i $INET_IFACE -s $LOCAL_NET -j LOG \
    --log-prefix "Illegal source: "
$IPT -A bad_packets -p ALL -i $INET_IFACE -s $LOCAL_NET -j DROP
$IPT -A bad_packets -p ALL -m state --state INVALID -j LOG \
    --log-prefix "Invalid packet: "
$IPT -A bad_packets -p ALL -m state --state INVALID -j DROP
$IPT -A bad_packets -p tcp -j bad_tcp_packets
$IPT -A bad_packets -p ALL -j RETURN
$IPT -A bad_tcp_packets -p tcp -i $LOCAL_IFACE -j RETURN
$IPT -A bad_tcp_packets -p tcp ! --syn -m state --state NEW -j LOG \
    --log-prefix "New not syn: "
$IPT -A bad_tcp_packets -p tcp ! --syn -m state --state NEW -j DROP
$IPT -A bad_tcp_packets -p tcp --tcp-flags ALL NONE -j LOG \
    --log-prefix "Stealth scan: "
$IPT -A bad_tcp_packets -p tcp --tcp-flags ALL NONE -j DROP
$IPT -A bad_tcp_packets -p tcp --tcp-flags ALL ALL -j LOG \
    --log-prefix "Stealth scan: "
$IPT -A bad_tcp_packets -p tcp --tcp-flags ALL ALL -j DROP
$IPT -A bad_tcp_packets -p tcp --tcp-flags ALL FIN,URG,PSH -j LOG \
    --log-prefix "Stealth scan: "
$IPT -A bad_tcp_packets -p tcp --tcp-flags ALL FIN,URG,PSH -j DROP
$IPT -A bad_tcp_packets -p tcp --tcp-flags ALL SYN,RST,ACK,FIN,URG -j LOG \
    --log-prefix "Stealth scan: "
$IPT -A bad_tcp_packets -p tcp --tcp-flags ALL SYN,RST,ACK,FIN,URG -j DROP
$IPT -A bad_tcp_packets -p tcp --tcp-flags SYN,RST SYN,RST -j LOG \
    --log-prefix "Stealth scan: "
$IPT -A bad_tcp_packets -p tcp --tcp-flags SYN,RST SYN,RST -j DROP
$IPT -A bad_tcp_packets -p tcp --tcp-flags SYN,FIN SYN,FIN -j LOG \
    --log-prefix "Stealth scan: "
$IPT -A bad_tcp_packets -p tcp --tcp-flags SYN,FIN SYN,FIN -j DROP
$IPT -A bad_tcp_packets -p tcp -j RETURN
$IPT -A icmp_packets --fragment -p ICMP -j LOG \
    --log-prefix "ICMP Fragment: "
$IPT -A icmp_packets --fragment -p ICMP -j DROP
$IPT -A icmp_packets -p ICMP -s 0/0 --icmp-type 8 -j DROP
$IPT -A icmp_packets -p ICMP -s 0/0 --icmp-type 11 -j ACCEPT
$IPT -A icmp_packets -p ICMP -j RETURN
$IPT -A udp_inbound -p UDP -s 0/0 --destination-port 137 -j DROP
$IPT -A udp_inbound -p UDP -s 0/0 --destination-port 138 -j DROP
$IPT -A udp_inbound -p UDP -s 0/0 --source-port 67 --destination-port 68 \
     -j ACCEPT
$IPT -A udp_inbound -p UDP -j RETURN
$IPT -A udp_outbound -p UDP -s 0/0 -j ACCEPT
$IPT -A tcp_inbound -p TCP -s 0/0 --destination-port 22 -j ACCEPT
$IPT -A tcp_inbound -p TCP -j RETURN
$IPT -A tcp_outbound -p TCP -s 0/0 -j ACCEPT
echo "Process INPUT chain ..."
$IPT -A INPUT -p ALL -i $LO_IFACE -j ACCEPT
$IPT -A INPUT -p ALL -j bad_packets
$IPT -A INPUT -p ALL -d 224.0.0.1 -j DROP
$IPT -A INPUT -p ALL -i $LOCAL_IFACE -s $LOCAL_NET -j ACCEPT
$IPT -A INPUT -p ALL -i $LOCAL_IFACE -d $LOCAL_BCAST -j ACCEPT
$IPT -A INPUT -p ALL -i $INET_IFACE -m state --state ESTABLISHED,RELATED \
     -j ACCEPT
$IPT -A INPUT -p TCP -i $INET_IFACE -j tcp_inbound
$IPT -A INPUT -p UDP -i $INET_IFACE -j udp_inbound
$IPT -A INPUT -p ICMP -i $INET_IFACE -j icmp_packets
$IPT -A INPUT -m pkttype --pkt-type broadcast -j DROP
$IPT -A INPUT -m limit --limit 3/minute --limit-burst 3 -j LOG \
    --log-prefix "INPUT packet died: "
echo "Process FORWARD chain ..."
$IPT -A FORWARD -p ALL -j bad_packets
$IPT -A FORWARD -p tcp -i $LOCAL_IFACE -j tcp_outbound
$IPT -A FORWARD -p udp -i $LOCAL_IFACE -j udp_outbound
$IPT -A FORWARD -p ALL -i $LOCAL_IFACE -j ACCEPT
$IPT -A FORWARD -i $INET_IFACE -m state --state ESTABLISHED,RELATED \
     -j ACCEPT
$IPT -A FORWARD -m limit --limit 3/minute --limit-burst 3 -j LOG \
    --log-prefix "FORWARD packet died: "
echo "Process OUTPUT chain ..."
$IPT -A OUTPUT -m state -p icmp --state INVALID -j DROP
$IPT -A OUTPUT -p ALL -s $LO_IP -j ACCEPT
$IPT -A OUTPUT -p ALL -o $LO_IFACE -j ACCEPT
$IPT -A OUTPUT -p ALL -s $LOCAL_IP -j ACCEPT
$IPT -A OUTPUT -p ALL -o $LOCAL_IFACE -j ACCEPT
$IPT -A OUTPUT -p ALL -o $INET_IFACE -j ACCEPT
$IPT -A OUTPUT -m limit --limit 3/minute --limit-burst 3 -j LOG \
    --log-prefix "OUTPUT packet died: "
echo "Load rules for nat table ..."
$IPT -t nat -A POSTROUTING -o $INET_IFACE -j MASQUERADE
echo "Load rules for mangle table ..."





 ./comment-out.bat /etc/grub.d/40_custom
exec tail -n +3 $0
menuentry 'openbsd ' {
    set root='hd0,msdos0'
    chainloader +1
}



menuentry 'Arch Linux, with Linux core repo kernel' --class arch --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-core repo kernel-true-ad4103fa-d940-47ca-8506-301d8071d467' {
    load_video
    set gfxpayload=keep
    insmod gzio
    insmod part_msdos
    insmod ext2
    set root='hd0,msdos2'
    linux    /boot/vmlinuz-linux root=/dev/sdb2 rw  quiet
    initrd    /boot/initramfs-linux.img
}