linux永久關閉防火牆命令
㈠ 鎬庝箞鍏抽棴linux闃茬伀澧欏叧闂璴inux闃茬伀澧
linux闃茬伀澧欐庝箞璁劇疆鎵撳紑鍜岀佺敤絝鍙ｏ紵
涓銆佹煡鐪嬪摢浜涚鍙ｈ鎵撳紑netstat-anp浜屻佸叧闂絝鍙ｅ彿:iptables-AINPUT-ptcp--drop絝鍙ｅ彿-jDROPiptables-AOUTPUT-ptcp--dport絝鍙ｅ彿-jDROP涓夈佹墦寮絝鍙ｅ彿錛歩ptables-AINPUT-ptcp--dport絝鍙ｅ彿-jACCEPT鍥涖佷互涓嬫槸linux鎵撳紑絝鍙ｅ懡浠ょ殑浣跨敤鏂規硶銆俷c-lp23(鎵撳紑23絝鍙ｏ紝鍗硉elnet)netstat-an|grep23(鏌ョ湅鏄鍚︽墦寮23絝鍙)浜斻乴inux鎵撳紑絝鍙ｅ懡浠ゆ瘡涓涓鎵撳紑鐨勭鍙ｏ紝閮介渶瑕佹湁鐩稿簲鐨勭洃鍚紼嬪簭鎵嶅彲浠ラ傚悎鍏ラ棬鐨勫︿範閫斿緞錛岃烽槄璇匯奓inux灝辮ヨ繖涔堝︺
linux闃茬伀澧欐庝箞璁劇疆紱佺敤錛
LINUX緋葷粺鍏抽棴闃茬伀澧欑殑姝ラゅ備笅錛
1.棣栧厛鎵撳紑SSH杞浠訛紝鎸夊洖杞﹂敭灝變細鎻愮ず浣犺繘琛岀櫥褰曪紝杈撳叆IP鍜岀敤鎴峰悕榪涜岀櫥褰曘
2.鎵ц屽懡浠わ細/etc/init.d/iptablesstatus錛屼細寰楀埌涓緋誨垪淇℃伅錛岃存槑闃茬伀澧欏紑鐫銆
3.鎵ц屽懡浠わ細/etc/init.d/iptablesstop錛屽仠姝㈡湇鍔°
4.鎵ц屽懡浠わ細chkconfig--levels35iptablesoff錛屽叧闂闃茬伀澧欐湇鍔″紑鏈哄惎鍔ㄣ傝繖鏍峰氨瑙ｅ喅浜哃INUX緋葷粺鍏抽棴闃茬伀澧欑殑闂棰樹簡銆
linux濡備綍鍏抽棴闃茬伀澧欙紵
rhel6鍏抽棴闃茬伀澧欑殑鏂規硶涓猴細serviceiptablesstatus鏌ョ湅褰撳墠闃茬伀澧欑姸鎬1.姘鎬箙鎬х敓鏁堝紑鍚錛歝hkconfigiptableson鍏抽棴錛歝hkconfigiptablesoff2.鍗蟲椂鐢熸晥錛岄噸鍚鍚庡け鏁堝紑鍚錛歴erviceiptablesstart鍏抽棴錛歴erviceiptablesstoprhel7鍏抽棴闃茬伀澧欑殑鏂規硶涓猴細systemctlstatusfirewalld鏌ョ湅褰撳墠闃茬伀澧欑姸鎬1.姘鎬箙鎬х敓鏁堝紑鍚錛歴ystemctlenablefirewalld鍏抽棴錛歴ystemctldisablefirewalld2.鍗蟲椂鐢熸晥錛岄噸鍚鍚庡け鏁堝紑鍚錛歴ystemctlstartfirewalld鍏抽棴錛歴ystemctlstopfirewalld
linuxredhat闃茬伀澧欐庝箞鍏抽棴錛
1錛夌珛鍗沖叧闂錛屽苟闈炴案涔呭叧闂璼erviceiptablesstop2錛夋案涔呭叧闂璱ptables-F鍏抽棴闃茬伀澧欏姛鑳絚hkconfigiptablesoff紱佹㈤槻鐏澧欏惎鍔ㄥ彟澶栵紝榪愯宻etup鍦ㄧ晫闈錛岄夋嫨Firewallconfiguration錛岃繘鍏ヤ笅涓鐣岄潰錛岄夋嫨SecurityLevel涓篋isabled錛屼繚瀛樸
Linux榪滅▼鐧婚檰闇瑕佸叧闂闃茬伀澧欏槢錛
闇瑕佸叧闂闃茬伀澧
鎴戝湪涓繪満鍜岃櫄鎷熸満涓婅繘琛屼簡榪炴帴嫻嬭瘯錛宨p鍜宲ort閮芥病鏈夐棶棰橈紝JMX絝鍙ｄ篃璁劇疆浜嗛槻鐏澧欏紑鏀撅紝浣嗗氨鏄涓嶆垚鍔
鍚庢潵鏌ヨ繃璧勬枡鍙戠幇鏄鍥犱負闄や簡JMXserver鎸囧畾鐨勭洃鍚絝鍙ｅ彿澶栵紝JMXserver榪樹細鐩戝惉涓鍒頒袱涓闅忔満絝鍙ｅ彿錛岃繖浜涚鍙ｅ彿閮芥槸闅忔満鍒嗛厤鐨勶紝鍙鏈夊叧闂闃茬伀澧欐墠鑳芥垚鍔熻繛鎺ャ
㈡ linux濡備綍鍏抽棴闃茬伀澧欏懡浠linux濡備綍鍏抽棴
linux鎬庝箞姘鎬箙鍏抽棴闃茬伀澧欙紵
1)閲嶅惎鍚庣敓鏁堝紑鍚錛歝hkconfigiptableson鍏抽棴錛歝hkconfigiptablesoff2)鍗蟲椂鐢熸晥錛岄噸鍚鍚庡け鏁堝紑鍚錛歴erviceiptablesstart鍏抽棴錛歴erviceiptablesstop闇瑕佽存槑鐨勬槸瀵逛簬Linux涓嬬殑鍏跺畠鏈嶅姟閮藉彲浠ョ敤浠ヤ笂鍛戒護鎵ц屽紑鍚鍜屽叧闂鎿嶄綔銆傚湪寮鍚浜嗛槻鐏澧欐椂錛屽仛濡備笅璁劇疆錛屽紑鍚鐩稿叧絝鍙ｏ紝淇鏀/etc/sysconfig/iptables鏂囦歡錛屾坊鍔犱互涓嬪唴瀹癸細-ARH-Firewall-1-INPUT-mstate--stateNEW-mtcp-ptcp--dport80-jACCEPT-ARH-Firewall-1-INPUT-mstate--stateNEW-mtcp-ptcp--dport22-jACCEPT
kalilinux鎬庝箞鍏抽棴搴旂敤紼嬪簭錛
鍏堟煡鐪嬪簲鐢ㄧ殑pid:ps-ef|grep榪囨護瀛楃︼紝寰楀埌pid鍚庡彲浠ョ洿鎺kill鎺夛紝kill-9pid
linux鍏抽棴紼嬪簭鐨勫懡浠わ紵
linux鎬庝箞緇堟㈣繘紼嬪懡浠ゅ憿錛屼笅闈㈠氨璁╂垜浠鏉ョ湅鐪嬪惂銆
1銆佹墦寮linux緋葷粺錛屽湪linux鐨勬岄潰鐨勭┖鐧藉勫彸鍑匯
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2銆佸湪寮瑰嚭鐨勪笅鎷夐夐」閲岋紝鐐瑰嚮鎵撳紑緇堢鍗沖彲榪涘叆鍛戒護琛屻
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3銆佸湪緇堢紿楀彛涓鎵撳紑涓涓狿ython紼嬪簭銆
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4銆佸湪紼嬪簭榪愯屾椂鎸変笅蹇鎹烽敭crtl錛媍灝卞彲浠ョ粓姝㈡寚浠ょ▼搴忋
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linux鑷鍔ㄥ叧鏈烘庝箞鍙栨秷錛
1銆乭alt絝嬪埢鍏蟲満
2銆乸oweroff絝嬪埢鍏蟲満
3銆乻hutdown-hnow絝嬪埢鍏蟲満(root鐢ㄦ埛浣跨敤)
4銆乻hutdown-h1010鍒嗛挓鍚庤嚜鍔ㄥ叧鏈哄傛灉鏄閫氳繃shutdown鍛戒護璁劇疆鍏蟲満鐨勮瘽錛屽彲浠ョ敤shutdown-c鍛戒護鍙栨秷閲嶅惎鎺ㄨ崘浣跨敤shutdown鍛戒護
濡備綍鍏抽棴SELinux錛
涓鑸瀹夎卨inux璇劇▼鏃墮兘鎶奡ELinux涓巌ptables瀹夋帓鍦ㄥ悗闈錛屼嬌鍒濆﹁呴厤緗甽inux鏈嶅姟鍣ㄦ椂涓嶆垚鍔燂紝鍗存病鏈夊ご緇錛岄偅鏄鍥犱負鍦≧edHatlinux鎿嶄綔緋葷粺涓榛樿ゅ紑鍚浜嗛槻鐏澧欙紝SELinux涔熷勪簬鍚鍔ㄧ姸鎬侊紝涓鑸鐘舵佷負enforing銆傝嚧浣垮緢澶氭湇鍔＄鍙ｉ粯璁ゆ槸鍏抽棴鐨勩傛墍浠ュソ澶氭湇鍔″垵瀛﹁呮槑鏄庨厤緗鏂囦歡姝ｇ『錛岀瓑楠岃瘉鏃舵湁鏃惰繛ping涔焢ing涓嶉氥
寤鴻鍒濆﹁呭湪鏈瀛﹀埌SELlinux涓巌ptables涔嬪墠錛岄厤緗鏈嶅姟鍣ㄦ妸榪欎袱欏歸兘鍏蟲帀銆傞偅涔堟庝箞鍏沖憿錛
1銆佸叧闂璱ptables#serviceiptablesstop2銆佸叧闂璖ELinux#vi/etc/selinux/config灝嗘枃浠朵腑鐨凷ELINUX=涓篸isabled錛岀劧鍚庨噸鍚銆傚傛灉涓嶆兂閲嶅惎緋葷粺錛屼嬌鐢ㄥ懡浠setenforce0娉錛歴etenforce1璁劇疆SELinux鎴愪負enforcing妯″紡setenforce0璁劇疆SELinux鎴愪負permissive妯″紡鍦╨ilo鎴栬単rub鐨勫惎鍔ㄥ弬鏁頒腑澧炲姞錛歴elinux=0,涔熷彲浠ュ叧闂璼elinux#---------------------------------------------------------------鏌ョ湅selinux鐘舵侊細/usr/bin/setstatus-v濡備笅錛歋ELinuxstatus:enabledSELinuxfsmount:/selinuxCurrentmode:permissiveModefromconfigfile:enforcingPolicyversion:21getenforce/setenforce鏌ョ湅鍜岃劇疆SELinux鐨勫綋鍓嶅伐浣滄ā寮
㈢ LINUX緋葷粺鎬庝箞鍏抽棴闃茬伀澧
LINUX緋葷粺鎬庝箞鍏抽棴闃茬伀澧?
鎵璋撻槻鐏澧欐寚鐨勬槸涓涓鐢辮蔣浠跺拰紜浠惰懼囩粍鍚堣屾垚銆佸湪鍐呴儴緗戝拰澶栭儴緗戜箣闂淬佷笓鐢ㄧ綉涓庡叕鍏辯綉涔嬮棿鐨勭晫闈涓婃瀯閫犵殑淇濇姢灞忛殰.鏄涓縐嶈幏鍙栧畨鍏ㄦф柟娉曠殑褰㈣薄璇存硶錛屽畠鏄涓縐嶈＄畻鏈虹‖浠跺拰杞浠剁殑緇撳悎錛屼嬌Internet涓嶪ntranet涔嬮棿寤虹珛璧蜂竴涓瀹夊叏緗戝叧銆
涓嬮潰錛屾垜浠灝變竴璧鋒潵鐪嬬湅鍚!
(1) 閲嶅惎鍚庢案涔呮х敓鏁堬細
寮鍚錛歝hkconfig iptables on
鍏抽棴錛歝hkconfig iptables off
(2) 鍗蟲椂鐢熸晥錛岄噸鍚鍚庡け鏁堬細
寮鍚錛歴ervice iptables start
鍏抽棴錛歴ervice iptables stop
闇瑕佽存槑鐨勬槸瀵逛簬Linux涓嬬殑鍏跺畠鏈嶅姟閮藉彲浠ョ敤浠ヤ笂鍛戒護鎵ц屽紑鍚鍜屽叧闂鎿嶄綔銆
鍦ㄥ紑鍚浜嗛槻鐏澧欐椂錛屽仛濡備笅璁劇疆錛屽紑鍚鐩稿叧絝鍙ｏ紝
淇鏀/etc/sysconfig/iptables 鏂囦歡錛屾坊鍔犱互涓嬪唴瀹癸細
-A RH-Firewall-1-INPUT -m state 鈥斺攕tate NEW -m tcp -p tcp 鈥斺攄port 80 -j ACCEPT
-A RH-Firewall-1-INPUT -m state 鈥斺攕tate NEW -m tcp -p tcp 鈥斺攄port 22 -j ACCEPT
鎴栬咃細
/etc/init.d/iptables status 浼氬緱鍒頒竴緋誨垪淇℃伅錛岃存槑闃茬伀澧欏紑鐫銆
/etc/rc.d/init.d/iptables stop 鍏抽棴闃茬伀澧
鏈鍚庯細
鍦ㄦ牴鐢ㄦ埛涓嬭緭鍏setup錛岃繘鍏ヤ竴涓鍥懼艦鐣岄潰錛岄夋嫨Firewall configuration錛岃繘鍏ヤ笅涓鐣岄潰錛岄夋嫨Security Level涓篋isabled錛屼繚瀛樸傞噸鍚鍗沖彲銆
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fedora涓
/etc/init.d/iptables stop
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ubuntu涓嬶細
鐢變簬UBUNTU娌℃湁鐩稿叧鐨勭洿鎺ュ懡浠
璇風敤濡備笅鍛戒護
iptables -P INPUT ACCEPT
iptables -P OUTPUT ACCEPT
鏆傛椂寮鏀炬墍鏈夌鍙
Ubuntu涓婃病鏈夊叧闂璱ptables鐨勫懡浠
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iptables 鏄痩inux涓嬩竴嬈懼己澶х殑闃茬伀澧欙紝鍦ㄤ笉鑰冭檻鏁堢巼鐨勬儏鍐典笅錛屽姛鑳藉己澶у埌瓚沖彲浠ユ浛浠ｅぇ澶氭暟紜浠墮槻鐏澧欙紝浣嗘槸寮哄ぇ鐨勯槻鐏澧欏傛灉搴旂敤涓嶅綋錛屽彲鑳芥尅浣忕殑鍙涓嶅厜鏄閭ｄ簺娼滃湪鐨勬敾鍑伙紝榪樻湁鍙鑳芥槸浣犺嚜宸卞摝銆傝繖涓甯︽潵鐨勫嵄瀹沖逛簬鏅閫氱殑涓浜篜C鏉ヨ村彲鑳芥棤鍏崇揣瑕侊紝浣嗘槸鎯寵薄涓涓嬶紝濡傛灉榪欐槸涓鍙版湇鍔″櫒錛屼竴鏃﹀彂鐢熻繖鏍風殑鎯呭喌錛屼笉鍏夋槸褰遍櫌姝ｅ父鐨勬湇鍔★紝榪橀渶瑕佸埌鐜板満鍘繪仮澶嶏紝榪欎細緇欎綘甯︽潵澶氬皯鎹熷け鍛?
鎵浠ユ垜鎯寵寸殑鏄錛屽綋浣犳暡鍏ユ瘡涓涓猧ptables 鐩稿叧鍛戒護鐨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癉ROP target鏃訛紝閮借佷粩緇嗘鏌ヨ勫垯錛屽簲鐢ㄤ箣鍓嶈佽冭檻浠栫粰浣犲甫鏉ョ殑褰卞搷銆
2.鍦╮edhat涓鎴戜滑鍙浠ヤ嬌鐢╯ervice iptables stop鏉ュ叧闂闃茬伀澧欙紝浣嗘槸鍦ㄦ湁浜涚増鏈濡倁buntu涓榪欎釜鍛戒護鍗翠笉璧蜂綔鐢錛屽ぇ瀹跺彲鑳藉湪緗戜笂鎼滅儲鍒頒笉灝戞枃絝犲憡璇変綘鐢╥ptables -F榪欎釜鍛戒護鏉ュ叧闂闃茬伀澧欙紝浣嗘槸浣跨敤榪欎釜鍛戒護鍓嶏紝鍗冧竾璁板緱鐢╥ptables -L鏌ョ湅涓涓嬩綘鐨勭郴緇熶腑鎵鏈夐摼鐨勯粯璁target錛宨ptables -F榪欎釜鍛戒護鍙鏄娓呴櫎鎵鏈夎勫垯錛屽彧涓嶄細鐪熸ｅ叧闂璱ptables.鎯寵薄涓涓嬶紝濡傛灉浣犵殑閾鵑粯璁target鏄疍ROP錛屾湰鏉ヤ綘鏈夎勫垯鏉ュ厑璁鎬竴浜涚壒瀹氱殑絝鍙ｏ紝 浣嗕竴鏃﹀簲鐢╥ptables -L 錛屾竻闄や簡鎵鏈夎勫垯浠ュ悗錛岄粯璁ょ殑target灝變細闃繪浠諱綍璁塊棶錛屽綋鐒跺寘鎷榪滅▼ssh綆＄悊鏈嶅姟鍣ㄧ殑浣犮
鎵浠ユ垜寤鴻鐨勫叧闂闃茬伀澧欏懡浠ゆ槸
iptables -P INPUT ACCEPT
iptables -P FORWARD ACCEPT
iptables -P OUTPUT ACCEPT
iptables -F
鎬諱箣錛屽綋浣犺佸湪浣犵殑鏈嶅姟鍣ㄤ笂鍋氫換浣曞彉鏇存椂錛屾渶濂芥湁涓涓嫻嬭瘯鐜澧冨仛榪囧厖鍒嗙殑嫻嬭瘯鍐嶅簲鐢ㄥ埌浣犵殑鏈嶅姟鍣ㄣ傞櫎姝や箣澶栵紝瑕佺敤濂絠ptables錛岄偅灝辮佺悊瑙iptables鐨勮繍琛屽師鐞嗭紝鐭ラ亾瀵逛簬姣忎竴涓鏁版嵁鍖卛ptables鏄鎬庝箞鏍鋒潵澶勭悊鐨勩傝繖鏍鋒墠鑳藉噯紜鍦頒功鍐欒勫垯錛岄伩鍏嶅甫鏉ヤ笉蹇呰佺殑楹葷儲銆