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1.查看防火墙当前状态5 H% e* f+ t4 e6 i; O/ |
ufw status
6 z, X, p& u6 f2.开启防火墙
9 r# ~9 Z/ I+ J" _$ q ufw enable9 a0 a$ u7 `; s- b: k# x
3.关闭防火墙" w' D1 I @3 K4 @, `
ufw disable, l7 ` G6 z$ v, S
4.查看防火墙版本
6 n# ]* [6 r: v/ k1 [$ M ufw version; v6 Q3 {, S8 L* |, S7 p* G Q
5.默认允许外部访问本机2 M' T7 V. M3 o1 x* r; j9 H, ^, o
ufw default allow, M; G1 V" Y) v. c; R4 G
6.默认拒绝外部访问主机
; R. W" f; G. I' d ufw default deny
6 A2 v9 G$ T* J8 |0 o8 g, f7.允许外部访问53端口
' G% U! r& |8 E- ^5 w% a" g, n ufw allow 53
9 d2 m5 V6 b% t2 a7 [: f3 K4 j$ f8.拒绝外部访问53端口 j+ [4 }( O8 h: V
ufw deny 533 O6 L8 g6 V' i! ~; x6 {
9.允许某个IP地址访问本机所有端口* T4 N( e! e; J
ufw allow from 192.168.13.15 t1 v% n1 H/ C
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安装防火墙
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/ P0 \4 k& S# i2 }sudo apt install ufw
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3 n' I# Q l: Q/ i) y- |% Y查看UFW状态8 x( U0 @! v6 c& H
4 v6 f& I3 f1 A7 j* Nsudo ufw status verbose7 A* t# j' J; n
5 ~$ L0 m9 v$ Z" H1 S* `/ G配置允许访问的应用4 o8 X' `6 j$ o
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ufw allow ssh% X4 D* F4 y4 b0 D1 `
4 p \3 V" I7 Y Y- ?启用 UFW! c% M# |! M* V- I% {7 f
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ufw enable$ D- _+ ^2 s: O! E- z# t: r( O
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禁止访问端口
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ufw deny 2049/tcp4 y1 M8 E# o4 g ~ W/ c* o# u
ufw deny 2049/tcp
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- k/ N" y- j$ j; i查看UFW 允许列表" P" q. H5 x$ e/ s) k; y
& Z' ^& d" Z" @; Yufw app list
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允许子网内所有的 IP，你可以 CIDR 的格式来配置
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sudo ufw allow from 192.168.10.0/24
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master节点防火墙配置示例
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* m, _ p8 P; G+ D( F# ufw status
8 g* G: A) B+ W# s2 tStatus: active* O* V$ `1 r, N+ s$ R5 `% Y" Z
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To Action From
: u& n$ d) i' i. ?$ C% E5 F-- ------ ----5 f1 X! l+ \4 f" S
22/tcp ALLOW Anywhere
5 G: t% ?0 t: ?% D2049/tcp DENY Anywhere
+ x+ R" O: P( t4 d9300/tcp DENY Anywhere
% e- {: ]( D7 |( k/ X( G( K3399/tcp ALLOW Anywhere2 G' p% g+ c$ ?; r: u" {+ C
3399/udp ALLOW Anywhere$ q, x% }# ~% u! s/ W4 ]8 L/ Y
22/udp ALLOW Anywhere( x5 \4 C! u, h7 J! G# `$ @9 J
80/tcp ALLOW Anywhere* z/ x3 p1 W+ d- r* F8 t: P
80/udp ALLOW Anywhere
" ]- C" A7 \+ c; W( H" \6443/udp ALLOW Anywhere" O! C/ t( `. b3 Z5 A& ]
6443/tcp ALLOW Anywhere2 z F8 t6 }4 x. J H2 B# r
111/tcp ALLOW Anywhere. v' @' M* S, Z$ |4 q7 I! J. e
111/udp ALLOW Anywhere' ?- F/ Z! v/ m+ f# D+ i6 Z H
2049/udp ALLOW Anywhere& @+ W& P# {* j0 |/ x& H
13025/tcp DENY Anywhere( t' c+ P; o/ p7 r- K9 S
13025/udp DENY Anywhere4 B6 D- \$ C6 r8 `$ K; }
1110/udp ALLOW Anywhere" S" r5 F: {% r4 Y& v
1110/tcp ALLOW Anywhere
$ ]' O0 [3 ^* \- o' z1 ?* M; _6 F2049 DENY Anywhere C4 @& t# S; t! z/ Y" U- i
111 ALLOW Anywhere
/ e! p0 `$ f& ^$ r8 l; o! q13025 ALLOW Anywhere2 F0 D# s0 Z$ y# d u$ X+ N
Anywhere ALLOW 192.168.10.23
7 i+ }; W; @0 HAnywhere ALLOW 192.168.10.25
8 o) ^) y+ W7 \2 Q2 a( I& \! ]: |Anywhere ALLOW 192.168.10.0/24* O+ j1 |8 K! A( S3 f/ y
3399 ALLOW Anywhere
7 D2 s0 e9 e' j% s7 Z22 ALLOW Anywhere% H0 ?$ y9 ^5 o, ]- H
22/tcp (v6) ALLOW Anywhere (v6)
: z& [: z: ^% Y2049/tcp (v6) DENY Anywhere (v6), t4 D: o4 _7 ]4 i+ K4 E1 f
9300/tcp (v6) DENY Anywhere (v6)' P- y# U5 [$ p& F8 l. n
3399/tcp (v6) ALLOW Anywhere (v6)* p% e: U6 j( c* p+ L
3399/udp (v6) ALLOW Anywhere (v6). R! s: Z( s2 u; j$ B
22/udp (v6) ALLOW Anywhere (v6)6 T8 M- D6 h6 ]% b
80/tcp (v6) ALLOW Anywhere (v6)
+ Q ~9 y3 n- N8 M; H# r. G80/udp (v6) ALLOW Anywhere (v6)$ X' o9 b; r( n- k1 @! l
6443/udp (v6) ALLOW Anywhere (v6)
" C- x8 @& G5 N) ]7 V6443/tcp (v6) ALLOW Anywhere (v6)2 A9 i; `) Y% {6 R1 ~ C
111/tcp (v6) ALLOW Anywhere (v6)
; N' c) ]% r' g6 b3 U111/udp (v6) ALLOW Anywhere (v6)
1 p8 T" S" K- G/ I3 c2049/udp (v6) ALLOW Anywhere (v6)* t1 Q: q& c9 i/ U2 `" o
13025/tcp (v6) DENY Anywhere (v6)
8 S9 x( l1 d4 ~) p+ u13025/udp (v6) DENY Anywhere (v6)
, O3 e3 S! |* i- ~' X* r1110/udp (v6) ALLOW Anywhere (v6). x! W# R! f1 C1 o) B' S
1110/tcp (v6) ALLOW Anywhere (v6)
9 N% l8 P$ L9 ^$ n t2 H) j2049 (v6) DENY Anywhere (v6)$ \! p Y% w2 N" e9 J& x- R
111 (v6) ALLOW Anywhere (v6)
7 V( r4 c, o0 C, K6 @13025 (v6) ALLOW Anywhere (v6)
. S) D3 v3 }0 {+ s* q3399 (v6) ALLOW Anywhere (v6)% A6 N* L" o7 ]' C+ x% B% z0 v
22 (v6) ALLOW Anywhere (v6)& u- q8 Q9 F: z; h+ r; t
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发表于 2022-1-13 15:58:27