|
|
| Line 22: |
Line 22: |
| | </pre> | | </pre> |
| | | | |
| − | ติดตั้ง vuurmuur iptables gui สำหรับวิธีการติดตั้ง >> [http://www.vuurmuur.org/trac/wiki/InstallationDebian Debian&Ubuntu].
| + | Enable kernel 4.9 bridge filter |
| − | | + | <pre> |
| − | ตัวอย่างการกำหนด Rule เพิ่มเติมครับ.
| + | modprobe br_netfilter |
| − | <pre> iptables -F FORWARD | + | depmod -a |
| − | iptables -P FORWARD DROP
| + | echo 1 > /proc/sys/net/ipv4/ip_forward |
| − | iptables -A FORWARD -s 0.0.0.0/0.0.0.0 -d 0.0.0.0/0.0.0.0 -m state --state INVALID -j DROP
| |
| − | iptables -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
| |
| − |
| |
| − | # Some funny rules but not in a classic Iptables sorry ...
| |
| − | # Limit ICMP
| |
| − | # iptables -A FORWARD -p icmp -m limit --limit 4/s -j ACCEPT
| |
| − | # Match string, a good simple method to block some VIRUS very quickly
| |
| − | # iptables -I FORWARD -j DROP -p tcp -s 0.0.0.0/0 -m string --string "cmd.exe"
| |
| − |
| |
| − | # Block all MySQL connection just to be sure
| |
| − | iptables -A FORWARD -p tcp -s 0/0 -d 62.3.3.0/24 --dport 3306 -j DROP
| |
| − |
| |
| − | # Linux Mail Server Rules
| |
| − |
| |
| − | # Allow FTP-DATA (20), FTP (21), SSH (22)
| |
| − | iptables -A FORWARD -p tcp -s 0.0.0.0/0 -d 62.3.3.27/32 --dport 20:22 -j ACCEPT
| |
| − |
| |
| − | # Allow the Mail Server to connect to the outside
| |
| − | # Note: This is *not* needed for the previous connections
| |
| − | # (remember: stateful filtering) and could be removed.
| |
| − | iptables -A FORWARD -p tcp -s 62.3.3.27/32 -d 0/0 -j ACCEPT
| |
| − |
| |
| − | # WWW Server Rules
| |
| − |
| |
| − | # Allow HTTP ( 80 ) connections with the WWW server
| |
| − | iptables -A FORWARD -p tcp -s 0.0.0.0/0 -d 62.3.3.28/32 --dport 80 -j ACCEPT
| |
| − |
| |
| − | # Allow HTTPS ( 443 ) connections with the WWW server
| |
| − | iptables -A FORWARD -p tcp -s 0.0.0.0/0 -d 62.3.3.28/32 --dport 443 -j ACCEPT
| |
| − |
| |
| − | # Allow the WWW server to go out
| |
| − | # Note: This is *not* needed for the previous connections
| |
| − | # (remember: stateful filtering) and could be removed.
| |
| − | iptables -A FORWARD -p tcp -s 62.3.3.28/32 -d 0/0 -j ACCEPT
| |
| − | | |
| − | | |
| | </pre> | | </pre> |
Revision as of 23:55, 15 March 2019
Bridge Firewall Linux
ผมใช้วิธีนี้ติดตั้งบน Debian etch.
# apt-get install bridge-utils
นำConfig ทั้งหมดไส่ใน /etc/rc.local
nano /etc/rc.local
# Bridge Interface
ifconfig eth0 down
ifconfig eth1 down
brctl addbr br0
brctl addif br0 eth0
brctl addif br0 eth1
brctl stp br0 on
ifconfig eth0 0.0.0.0 up
ifconfig eth1 0.0.0.0 up
ifconfig br0 192.168.1.107 netmask 255.255.255.0 up
route add default gw 192.168.1.1
Enable kernel 4.9 bridge filter
modprobe br_netfilter
depmod -a
echo 1 > /proc/sys/net/ipv4/ip_forward
