linux永久关闭防火墙命令
㈠ 镐庝箞鍏抽棴linux阒茬伀澧椤叧闂璴inux阒茬伀澧
linux阒茬伀澧欐庝箞璁剧疆镓揿紑鍜岀佺敤绔鍙ｏ纻
涓銆佹煡鐪嫔摢浜涚鍙ｈ镓揿紑netstat-anp浜屻佸叧闂绔鍙ｅ彿:iptables-AINPUT-ptcp--drop绔鍙ｅ彿-jDROPiptables-AOUTPUT-ptcp--dport绔鍙ｅ彿-jDROP涓夈佹墦寮绔鍙ｅ彿锛歩ptables-AINPUT-ptcp--dport绔鍙ｅ彿-jACCEPT锲涖佷互涓嬫槸linux镓揿紑绔鍙ｅ懡浠ょ殑浣跨敤鏂规硶銆俷c-lp23(镓揿紑23绔鍙ｏ纴鍗硉elnet)netstat-an|grep23(镆ョ湅鏄钖︽墦寮23绔鍙)浜斻乴inux镓揿紑绔鍙ｅ懡浠ゆ疮涓涓镓揿紑镄勭鍙ｏ纴閮介渶瑕佹湁鐩稿簲镄勭洃钖绋嫔簭镓嶅彲浠ラ傚悎鍏ラ棬镄勫︿範阃斿缎锛岃烽槄璇汇奓inux灏辫ヨ繖涔埚︺
linux阒茬伀澧欐庝箞璁剧疆绂佺敤锛
LINUX绯荤粺鍏抽棴阒茬伀澧欑殑姝ラゅ备笅锛
1.棣栧厛镓揿紑SSH杞浠讹纴鎸夊洖杞﹂敭灏变细鎻愮ず浣犺繘琛岀橱褰曪纴杈揿叆IP鍜岀敤鎴峰悕杩涜岀橱褰曘
2.镓ц屽懡浠わ细/etc/init.d/iptablesstatus锛屼细寰楀埌涓绯诲垪淇℃伅锛岃存槑阒茬伀澧椤紑镌銆
3.镓ц屽懡浠わ细/etc/init.d/iptablesstop锛屽仠姝㈡湇锷°
4.镓ц屽懡浠わ细chkconfig--levels35iptablesoff锛屽叧闂阒茬伀澧欐湇锷″紑链哄惎锷ㄣ傝繖镙峰氨瑙ｅ喅浜哃INUX绯荤粺鍏抽棴阒茬伀澧欑殑闂棰树简銆
linux濡备綍鍏抽棴阒茬伀澧欙纻
rhel6鍏抽棴阒茬伀澧欑殑鏂规硶涓猴细serviceiptablesstatus镆ョ湅褰揿墠阒茬伀澧欑姸镐1.姘镐箙镐х敓鏁埚紑钖锛歝hkconfigiptableson鍏抽棴锛歝hkconfigiptablesoff2.鍗虫椂鐢熸晥锛岄吨钖钖庡け鏁埚紑钖锛歴erviceiptablesstart鍏抽棴锛歴erviceiptablesstoprhel7鍏抽棴阒茬伀澧欑殑鏂规硶涓猴细systemctlstatusfirewalld镆ョ湅褰揿墠阒茬伀澧欑姸镐1.姘镐箙镐х敓鏁埚紑钖锛歴ystemctlenablefirewalld鍏抽棴锛歴ystemctldisablefirewalld2.鍗虫椂鐢熸晥锛岄吨钖钖庡け鏁埚紑钖锛歴ystemctlstartfirewalld鍏抽棴锛歴ystemctlstopfirewalld
linuxredhat阒茬伀澧欐庝箞鍏抽棴锛
1锛夌珛鍗冲叧闂锛屽苟闱炴案涔呭叧闂璼erviceiptablesstop2锛夋案涔呭叧闂璱ptables-F鍏抽棴阒茬伀澧椤姛鑳絚hkconfigiptablesoff绂佹㈤槻𨱔澧椤惎锷ㄥ彟澶栵纴杩愯宻etup鍦ㄧ晫闱锛岄夋嫨Firewallconfiguration锛岃繘鍏ヤ笅涓鐣岄溃锛岄夋嫨SecurityLevel涓箧isabled锛屼缭瀛樸
Linux杩灭▼锏婚檰闇瑕佸叧闂阒茬伀澧椤槢锛
闇瑕佸叧闂阒茬伀澧
鎴戝湪涓绘満鍜岃櫄𨰾熸満涓婅繘琛屼简杩炴帴娴嬭瘯锛宨p鍜宲ort閮芥病链夐梾棰桡纴JMX绔鍙ｄ篃璁剧疆浜嗛槻𨱔澧椤紑鏀撅纴浣嗗氨鏄涓嶆垚锷
钖庢潵镆ヨ繃璧勬枡鍙戠幇鏄锲犱负闄や简JMXserver鎸囧畾镄勭洃钖绔鍙ｅ彿澶栵纴JMXserver杩树细鐩戝惉涓鍒颁袱涓闅忔満绔鍙ｅ彿锛岃繖浜涚鍙ｅ彿閮芥槸闅忔満鍒嗛厤镄勶纴鍙链夊叧闂阒茬伀澧欐墠鑳芥垚锷熻繛鎺ャ
㈡ linux濡备綍鍏抽棴阒茬伀澧椤懡浠linux濡备綍鍏抽棴
linux镐庝箞姘镐箙鍏抽棴阒茬伀澧欙纻
1)閲嶅惎钖庣敓鏁埚紑钖锛歝hkconfigiptableson鍏抽棴锛歝hkconfigiptablesoff2)鍗虫椂鐢熸晥锛岄吨钖钖庡け鏁埚紑钖锛歴erviceiptablesstart鍏抽棴锛歴erviceiptablesstop闇瑕佽存槑镄勬槸瀵逛簬Linux涓嬬殑鍏跺畠链嶅姟閮藉彲浠ョ敤浠ヤ笂锻戒护镓ц屽紑钖鍜屽叧闂镎崭綔銆傚湪寮钖浜嗛槻𨱔澧欐椂锛屽仛濡备笅璁剧疆锛屽紑钖鐩稿叧绔鍙ｏ纴淇鏀/etc/sysconfig/iptables鏂囦欢锛屾坊锷犱互涓嫔唴瀹癸细-ARH-Firewall-1-INPUT-mstate--stateNEW-mtcp-ptcp--dport80-jACCEPT-ARH-Firewall-1-INPUT-mstate--stateNEW-mtcp-ptcp--dport22-jACCEPT
kalilinux镐庝箞鍏抽棴搴旂敤绋嫔簭锛
鍏堟煡鐪嫔簲鐢ㄧ殑pid:ps-ef|grep杩囨护瀛楃︼纴寰楀埌pid钖庡彲浠ョ洿鎺kill鎺夛纴kill-9pid
linux鍏抽棴绋嫔簭镄勫懡浠わ纻
linux镐庝箞缁堟㈣繘绋嫔懡浠ゅ憿锛屼笅闱㈠氨璁╂垜浠𨱒ョ湅鐪嫔惂銆
1銆佹墦寮linux绯荤粺锛屽湪linux镄勬岄溃镄勭┖锏藉勫彸鍑汇
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2銆佸湪寮瑰嚭镄勪笅𨰾夐夐”閲岋纴镣瑰嚮镓揿紑缁堢鍗冲彲杩涘叆锻戒护琛屻
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3銆佸湪缁堢绐楀彛涓镓揿紑涓涓狿ython绋嫔簭銆
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4銆佸湪绋嫔簭杩愯屾椂鎸変笅蹇鎹烽敭crtl锛媍灏卞彲浠ョ粓姝㈡寚浠ょ▼搴忋
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linux镊锷ㄥ叧链烘庝箞鍙栨秷锛
1銆乭alt绔嫔埢鍏虫満
2銆乸oweroff绔嫔埢鍏虫満
3銆乻hutdown-hnow绔嫔埢鍏虫満(root鐢ㄦ埛浣跨敤)
4銆乻hutdown-h1010鍒嗛挓钖庤嚜锷ㄥ叧链哄傛灉鏄阃氲繃shutdown锻戒护璁剧疆鍏虫満镄勮瘽锛屽彲浠ョ敤shutdown-c锻戒护鍙栨秷閲嶅惎鎺ㄨ崘浣跨敤shutdown锻戒护
濡备綍鍏抽棴SELinux锛
涓鑸瀹夎卨inux璇剧▼镞堕兘鎶奡ELinux涓巌ptables瀹夋帓鍦ㄥ悗闱锛屼娇鍒濆﹁呴厤缃甽inux链嶅姟鍣ㄦ椂涓嶆垚锷燂纴鍗存病链夊ご缁锛岄偅鏄锲犱负鍦≧edHatlinux镎崭綔绯荤粺涓榛樿ゅ紑钖浜嗛槻𨱔澧欙纴SELinux涔熷勪簬钖锷ㄧ姸镐侊纴涓鑸鐘舵佷负enforing銆傝嚧浣垮緢澶氭湇锷＄鍙ｉ粯璁ゆ槸鍏抽棴镄勚傛墍浠ュソ澶氭湇锷″埯瀛﹁呮槑鏄庨厤缃鏂囦欢姝ｇ‘锛岀瓑楠岃瘉镞舵湁镞惰繛ping涔焢ing涓嶉氥
寤鸿鍒濆﹁呭湪链瀛﹀埌SELlinux涓巌ptables涔嫔墠锛岄厤缃链嶅姟鍣ㄦ妸杩欎袱椤归兘鍏虫帀銆傞偅涔堟庝箞鍏冲憿锛
1銆佸叧闂璱ptables#serviceiptablesstop2銆佸叧闂璖ELinux#vi/etc/selinux/config灏嗘枃浠朵腑镄凷ELINUX=涓篸isabled锛岀劧钖庨吨钖銆傚傛灉涓嶆兂閲嶅惎绯荤粺锛屼娇鐢ㄥ懡浠setenforce0娉锛歴etenforce1璁剧疆SELinux鎴愪负enforcing妯″纺setenforce0璁剧疆SELinux鎴愪负permissive妯″纺鍦╨ilo鎴栬単rub镄勫惎锷ㄥ弬鏁颁腑澧炲姞锛歴elinux=0,涔熷彲浠ュ叧闂璼elinux#---------------------------------------------------------------镆ョ湅selinux鐘舵侊细/usr/bin/setstatus-v濡备笅锛歋ELinuxstatus:enabledSELinuxfsmount:/selinuxCurrentmode:permissiveModefromconfigfile:enforcingPolicyversion:21getenforce/setenforce镆ョ湅鍜岃剧疆SELinux镄勫綋鍓嶅伐浣沧ā寮
㈢ LINUX绯荤粺镐庝箞鍏抽棴阒茬伀澧
LINUX绯荤粺镐庝箞鍏抽棴阒茬伀澧?
镓璋挞槻𨱔澧欐寚镄勬槸涓涓鐢辫蒋浠跺拰纭浠惰惧囩粍钖堣屾垚銆佸湪鍐呴儴缃戝拰澶栭儴缃戜箣闂淬佷笓鐢ㄧ绣涓庡叕鍏辩绣涔嬮棿镄勭晫闱涓婃瀯阃犵殑淇濇姢灞忛㱩.鏄涓绉嶈幏鍙栧畨鍏ㄦф柟娉旷殑褰㈣薄璇存硶锛屽畠鏄涓绉嶈＄畻链虹‖浠跺拰杞浠剁殑缁揿悎锛屼娇Internet涓嶪ntranet涔嬮棿寤虹珛璧蜂竴涓瀹夊叏缃戝叧銆
涓嬮溃锛屾垜浠灏变竴璧锋潵鐪嬬湅钖!
(1) 閲嶅惎钖庢案涔呮х敓鏁堬细
寮钖锛歝hkconfig iptables on
鍏抽棴锛歝hkconfig iptables off
(2) 鍗虫椂鐢熸晥锛岄吨钖钖庡け鏁堬细
寮钖锛歴ervice iptables start
鍏抽棴锛歴ervice iptables stop
闇瑕佽存槑镄勬槸瀵逛簬Linux涓嬬殑鍏跺畠链嶅姟閮藉彲浠ョ敤浠ヤ笂锻戒护镓ц屽紑钖鍜屽叧闂镎崭綔銆
鍦ㄥ紑钖浜嗛槻𨱔澧欐椂锛屽仛濡备笅璁剧疆锛屽紑钖鐩稿叧绔鍙ｏ纴
淇鏀/etc/sysconfig/iptables 鏂囦欢锛屾坊锷犱互涓嫔唴瀹癸细
-A RH-Firewall-1-INPUT -m state 钬斺攕tate NEW -m tcp -p tcp 钬斺摅port 80 -j ACCEPT
-A RH-Firewall-1-INPUT -m state 钬斺攕tate NEW -m tcp -p tcp 钬斺摅port 22 -j ACCEPT
鎴栬咃细
/etc/init.d/iptables status 浼氩缑鍒颁竴绯诲垪淇℃伅锛岃存槑阒茬伀澧椤紑镌銆
/etc/rc.d/init.d/iptables stop 鍏抽棴阒茬伀澧
链钖庯细
鍦ㄦ牴鐢ㄦ埛涓嬭緭鍏setup锛岃繘鍏ヤ竴涓锲惧舰鐣岄溃锛岄夋嫨Firewall configuration锛岃繘鍏ヤ笅涓鐣岄溃锛岄夋嫨Security Level涓箧isabled锛屼缭瀛樸傞吨钖鍗冲彲銆
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fedora涓
/etc/init.d/iptables stop
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ubuntu涓嬶细
鐢变簬UBUNTU娌℃湁鐩稿叧镄勭洿鎺ュ懡浠
璇风敤濡备笅锻戒护
iptables -P INPUT ACCEPT
iptables -P OUTPUT ACCEPT
𨱌傛椂寮鏀炬墍链夌鍙
Ubuntu涓婃病链夊叧闂璱ptables镄勫懡浠
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iptables 鏄痩inux涓嬩竴娆惧己澶х殑阒茬伀澧欙纴鍦ㄤ笉钥冭槛鏁堢巼镄勬儏鍐典笅锛屽姛鑳藉己澶у埌瓒冲彲浠ユ浛浠ｅぇ澶氭暟纭浠堕槻𨱔澧欙纴浣嗘槸寮哄ぇ镄勯槻𨱔澧椤傛灉搴旂敤涓嶅綋锛屽彲鑳芥尅浣忕殑鍙涓嶅厜鏄闾ｄ簺娼滃湪镄勬敾鍑伙纴杩樻湁鍙鑳芥槸浣犺嚜宸卞摝銆傝繖涓甯︽潵镄勫嵄瀹冲逛簬鏅阃氱殑涓浜篜C𨱒ヨ村彲鑳芥棤鍏崇揣瑕侊纴浣嗘槸𨱍宠薄涓涓嬶纴濡傛灉杩欐槸涓鍙版湇锷″櫒锛屼竴镞﹀彂鐢熻繖镙风殑𨱍呭喌锛屼笉鍏夋槸褰遍櫌姝ｅ父镄勬湇锷★纴杩橀渶瑕佸埌鐜板満铡绘仮澶嶏纴杩欎细缁欎綘甯︽潵澶氩皯鎹熷け锻?
镓浠ユ垜𨱍宠寸殑鏄锛屽綋浣犳暡鍏ユ疮涓涓猧ptables 鐩稿叧锻戒护镄勬椂鍊欓兘瑕佷竾鍒嗗皬蹇冦
1.搴旂敤姣忎竴涓瑙勫垯鍒瘅ROP target镞讹纴閮借佷粩缁嗘镆ヨ勫垯锛屽簲鐢ㄤ箣鍓嶈佽冭槛浠栫粰浣犲甫𨱒ョ殑褰卞搷銆
2.鍦╮edhat涓鎴戜滑鍙浠ヤ娇鐢╯ervice iptables stop𨱒ュ叧闂阒茬伀澧欙纴浣嗘槸鍦ㄦ湁浜涚増链濡倁buntu涓杩欎釜锻戒护鍗翠笉璧蜂綔鐢锛屽ぇ瀹跺彲鑳藉湪缃戜笂鎼灭储鍒颁笉灏戞枃绔犲憡璇変綘鐢╥ptables -F杩欎釜锻戒护𨱒ュ叧闂阒茬伀澧欙纴浣嗘槸浣跨敤杩欎釜锻戒护鍓嶏纴鍗冧竾璁板缑鐢╥ptables -L镆ョ湅涓涓嬩綘镄勭郴缁熶腑镓链夐摼镄勯粯璁target锛宨ptables -F杩欎釜锻戒护鍙鏄娓呴櫎镓链夎勫垯锛屽彧涓崭细鐪熸ｅ叧闂璱ptables.𨱍宠薄涓涓嬶纴濡傛灉浣犵殑阈鹃粯璁target鏄疍ROP锛屾湰𨱒ヤ綘链夎勫垯𨱒ュ厑璁镐竴浜涚壒瀹氱殑绔鍙ｏ纴 浣嗕竴镞﹀簲鐢╥ptables -L 锛屾竻闄や简镓链夎勫垯浠ュ悗锛岄粯璁ょ殑target灏变细阒绘浠讳綍璁块梾锛屽綋铹跺寘𨰾杩灭▼ssh绠＄悊链嶅姟鍣ㄧ殑浣犮
镓浠ユ垜寤鸿镄勫叧闂阒茬伀澧椤懡浠ゆ槸
iptables -P INPUT ACCEPT
iptables -P FORWARD ACCEPT
iptables -P OUTPUT ACCEPT
iptables -F
镐讳箣锛屽綋浣犺佸湪浣犵殑链嶅姟鍣ㄤ笂锅氢换浣曞彉镟存椂锛屾渶濂芥湁涓涓娴嬭瘯鐜澧冨仛杩囧厖鍒嗙殑娴嬭瘯鍐嶅簲鐢ㄥ埌浣犵殑链嶅姟鍣ㄣ傞櫎姝や箣澶栵纴瑕佺敤濂絠ptables锛岄偅灏辫佺悊瑙iptables镄勮繍琛屽师鐞嗭纴鐭ラ亾瀵逛簬姣忎竴涓鏁版嵁鍖卛ptables鏄镐庝箞镙锋潵澶勭悊镄勚傝繖镙锋墠鑳藉嗳纭鍦颁功鍐栾勫垯锛岄伩鍏嶅甫𨱒ヤ笉蹇呰佺殑楹荤储銆