{"id":18481,"date":"2014-09-30T06:09:05","date_gmt":"2014-09-29T22:09:05","guid":{"rendered":"https:\/\/2blog.ilc.edu.tw\/25793\/2014\/09\/30\/banana-pi-%e6%b8%ac%e8%a9%a6-bananian-%e7%af%87-iptables-%e9%98%b2%e7%81%ab%e7%89%86\/"},"modified":"2014-09-30T06:09:05","modified_gmt":"2014-09-29T22:09:05","slug":"banana-pi-%e6%b8%ac%e8%a9%a6-bananian-%e7%af%87-iptables-%e9%98%b2%e7%81%ab%e7%89%86","status":"publish","type":"post","link":"https:\/\/2blog.ilc.edu.tw\/25793\/2014\/09\/30\/banana-pi-%e6%b8%ac%e8%a9%a6-bananian-%e7%af%87-iptables-%e9%98%b2%e7%81%ab%e7%89%86\/","title":{"rendered":"Banana Pi \u6e2c\u8a66 – Bananian \u7bc7 iptables \u9632\u706b\u7246"},"content":{"rendered":"

\u70ba\u4e86\u7cfb\u7d71\u7684\u5b89\u5168\uff0c\u6240\u4ee5\u52a0\u4e0a\u4e86 iptables\u00a0\u9632\u706b\u7246\u898f\u5247\uff0c\u4e3b\u8981\u662f\u53c3\u8003 ols3\u00a0\u7684\u9632\u706b\u7246\u898f\u5247\u3002<\/p>\n

# vim \/etc\/firewall.server<\/span>[@more@]#! \/bin\/bash<\/span>
#<\/span>
# $IPTABLES \u7bc4\u672c<\/span>
# written by OLS3 (ols3@lxer.idv.tw)<\/span>
#<\/span>
# \u8acb\u81ea\u884c\u53c3\u8003\u4fee\u6539\uff0c\u628a\u8a3b\u89e3\u62ff\u6389\u5373\u53ef\u555f\u7528\u8a72\u9805\u8a2d\u5b9a<\/span>
#<\/span><\/p>\n

###—————————————————–###<\/span>
# \u8a2d\u5b9a $IPTABLES \u7684\u8def\u5f91<\/span>
###—————————————————–###<\/span>
echo “Set path of iptables”<\/span>
echo<\/span><\/p>\n

IPTABLES=”\/sbin\/iptables”<\/span><\/p>\n

#\u8f09\u5165\u76f8\u95dc\u6a21\u7d44<\/span>
\/sbin\/modprobe ip_conntrack<\/span>
\/sbin\/modprobe ip_conntrack_ftp<\/span>
\/sbin\/modprobe iptable_nat<\/span>
\/sbin\/modprobe ip_nat_ftp<\/span><\/p>\n

###—————————————————–###<\/span>
# \u5916\u90e8\u7db2\u6bb5 IP \u53ca\u4ecb\u9762<\/span>
###—————————————————–###<\/span>
echo “Set external ……”<\/span>
echo<\/span><\/p>\n

#FW_IP=”192.168.1.1″<\/span>
#FW_IP_RANGE=”192.168.1.0\/24″<\/span>
FW_IFACE=”ppp0″<\/span><\/p>\n

# loopback interface<\/span>
LO_IFACE=”lo”<\/span>
LO_IP=”127.0.0.1″<\/span><\/p>\n

## \u8a2d\u5b9a\u6838\u5fc3\u7684\u5b89\u5168\u76f8\u95dc\u53c3\u6578<\/span>
echo 1 > \/proc\/sys\/net\/ipv4\/icmp_echo_ignore_broadcasts<\/span>
echo 1 > \/proc\/sys\/net\/ipv4\/icmp_ignore_bogus_error_responses<\/span>
echo 0 > \/proc\/sys\/net\/ipv4\/conf\/all\/accept_source_route<\/span>
echo 0 > \/proc\/sys\/net\/ipv4\/conf\/all\/accept_redirects<\/span>
echo 0 > \/proc\/sys\/net\/ipv4\/conf\/all\/send_redirects<\/span>
echo 1 > \/proc\/sys\/net\/ipv4\/conf\/all\/rp_filter<\/span>
echo 1 > \/proc\/sys\/net\/ipv4\/tcp_syncookies<\/span>
echo 3 > \/proc\/sys\/net\/ipv4\/tcp_retries1<\/span>
echo 30 > \/proc\/sys\/net\/ipv4\/tcp_fin_timeout<\/span>
echo 1400 > \/proc\/sys\/net\/ipv4\/tcp_keepalive_time<\/span>
echo 0 > \/proc\/sys\/net\/ipv4\/tcp_window_scaling<\/span>
echo 0 > \/proc\/sys\/net\/ipv4\/tcp_sack<\/span>
echo 0 > \/proc\/sys\/net\/ipv4\/tcp_timestamps<\/span><\/p>\n

###—————————————————–###<\/span>
# \u6e05\u9664\u5148\u524d\u7684\u8a2d\u5b9a<\/span>
###—————————————————–###<\/span>
echo “Flush fiter table ……”<\/span>
echo<\/span><\/p>\n

# Flush filter<\/span>
$IPTABLES -F<\/span>
$IPTABLES -X<\/span><\/p>\n

echo “Flush mangle table ……”<\/span>
echo<\/span>
# Flush mangle<\/span>
$IPTABLES -F -t mangle<\/span>
$IPTABLES -t mangle -X<\/span><\/p>\n

echo “Flush nat table ……”<\/span>
echo<\/span>
# Flush nat<\/span>
$IPTABLES -F -t nat<\/span>
$IPTABLES -t nat -X<\/span><\/p>\n

###—————————————————–###<\/span>
# \u8a2d\u5b9a filter table \u7684\u9810\u8a2d\u653f\u7b56<\/span>
###—————————————————–###<\/span>
$IPTABLES -P INPUT DROP<\/span>
$IPTABLES -P OUTPUT ACCEPT<\/span>
$IPTABLES -P FORWARD DROP<\/span><\/p>\n

# \u5141\u8a31\u6d41\u7d93 lookback \u4ecb\u9762\u7684\u5c01\u5305\u9032\u51fa<\/span>
$IPTABLES -A INPUT -i lo -j ACCEPT<\/span>
$IPTABLES -A OUTPUT -o lo -j ACCEPT<\/span><\/p>\n

# \u963b\u53ef\u7591\u5c01\u5305<\/span>
$IPTABLES -A INPUT -i $FW_IFACE -m state –state INVALID -j DROP<\/span>
$IPTABLES -A INPUT -i $FW_IFACE -p tcp ! –syn -m state –state NEW -j DROP<\/span>
$IPTABLES -A INPUT -i $FW_IFACE -p tcp –tcp-flags ALL NONE -j DROP<\/span>
$IPTABLES -A INPUT -i $FW_IFACE -p tcp –tcp-flags SYN,FIN SYN,FIN -j DROP<\/span>
$IPTABLES -A INPUT -i $FW_IFACE -p tcp –tcp-flags SYN,RST SYN,RST -j DROP<\/span>
$IPTABLES -A INPUT -i $FW_IFACE -p tcp –tcp-flags FIN,RST FIN,RST -j DROP<\/span>
$IPTABLES -A INPUT -i $FW_IFACE -p tcp –tcp-flags ACK,FIN FIN -j DROP<\/span>
$IPTABLES -A INPUT -i $FW_IFACE -p tcp –tcp-flags ACK,URG URG -j DROP<\/span>
$IPTABLES -A INPUT -i $FW_IFACE -p tcp –tcp-flags ACK,PSH PSH -j DROP<\/span>
$IPTABLES -A INPUT -i $FW_IFACE -p tcp –tcp-flags ALL FIN,URG,PSH -j DROP<\/span>
$IPTABLES -A INPUT -i $FW_IFACE -p tcp –tcp-flags ALL SYN,RST,ACK,FIN,URG -j DROP<\/span>
$IPTABLES -A INPUT -i $FW_IFACE -p tcp –tcp-flags ALL ALL -j DROP<\/span>
$IPTABLES -A INPUT -i $FW_IFACE -p tcp –tcp-flags ALL FIN -j DROP<\/span><\/p>\n

# \u5141\u8a31\u5df2\u5efa\u7acb\u9023\u7dda\u548c\u56de\u61c9\u7684\u5c01\u5305\u901a\u904e<\/span>
$IPTABLES -A INPUT -i eth0 -m state –state ESTABLISHED,RELATED -j ACCEPT<\/span>
$IPTABLES -A OUTPUT -o eth0 -m state –state ESTABLISHED,RELATED -j ACCEPT<\/span>
$IPTABLES -A INPUT -i $FW_IFACE -m state –state ESTABLISHED,RELATED -j ACCEPT<\/span>
$IPTABLES -A OUTPUT -o $FW_IFACE -m state –state ESTABLISHED,RELATED -j ACCEPT<\/span><\/p>\n

# \u958b\u653e\u672c\u6a5f\u7684 ssh port 22 \u670d\u52d9<\/span>
$IPTABLES -A INPUT -i eth0 -p tcp –dport 22 -j ACCEPT<\/span>
$IPTABLES -A INPUT -i $FW_IFACE -p tcp –dport 22 -j ACCEPT<\/span><\/p>\n

# \u958b\u653e\u672c\u6a5f\u7684 http port 80 \u670d\u52d9<\/span>
$IPTABLES -A INPUT -i eth0 -p tcp –dport 80 -j ACCEPT<\/span>
$IPTABLES -A INPUT -i $FW_IFACE -p tcp –dport 80 -j ACCEPT<\/span><\/p>\n

# \u958b\u653e\u672c\u6a5f\u7684 https port 443 \u670d\u52d9<\/span>
$IPTABLES -A INPUT -i eth0 -p tcp –dport 443 -j ACCEPT<\/span>
$IPTABLES -A INPUT -i $FW_IFACE -p tcp –dport 443 -j ACCEPT<\/span><\/p>\n

$IPTABLES -A INPUT -p icmp -s 0\/0 –icmp-type 8 -j ACCEPT<\/span>
$IPTABLES -A INPUT -p icmp -s 0\/0 –icmp-type 0 -j ACCEPT<\/span><\/p>\n

\u66f4\u6539\u6a94\u6848\u6b0a\u9650
# chmod 700 \/etc\/firewall.server<\/span><\/p>\n

\u8a2d\u5b9a\u958b\u6a5f\u6642\u57f7\u884c
\u5728 \/etc\/rc.local<\/span>\u00a0\u6700\u5f8c\u4e00\u884c exit 0<\/span>\u00a0\u4e4b\u524d\u52a0\u5165 sh \/etc\/firewall.server<\/span>
# sed -i ‘\/^exit 0\/ish \/etc\/firewall.server’ \/etc\/rc.local<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

\u70ba\u4e86\u7cfb\u7d71\u7684\u5b89\u5168\uff0c\u6240\u4ee5\u52a0\u4e0a\u4e86 iptables\u00a0\u9632\u706b\u7246\u898f\u5247\uff0c\u4e3b\u8981\u662f\u53c3\u8003 ols3\u00a0\u7684\u9632\u706b\u7246\u898f\u5247\u3002 # vim \/ … <\/p>\n

\u95b1\u8b80\u5168\u6587\u3008Banana Pi \u6e2c\u8a66 – Bananian \u7bc7 iptables \u9632\u706b\u7246\u3009<\/span><\/a><\/p>\n","protected":false},"author":55,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[162,138],"tags":[],"class_list":["post-18481","post","type-post","status-publish","format-standard","hentry","category-c-83744","category-c-78483"],"meta_key":{"_pingme":["1"],"_encloseme":["1"],"lt_post_id":["518578"]},"_links":{"self":[{"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/posts\/18481"}],"collection":[{"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/users\/55"}],"replies":[{"embeddable":true,"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/comments?post=18481"}],"version-history":[{"count":0,"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/posts\/18481\/revisions"}],"wp:attachment":[{"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/media?parent=18481"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/categories?post=18481"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/tags?post=18481"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}