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1.查看防火墙当前状态9 b* T( q9 b4 Y2 `
ufw status
. u2 T- s% q/ v1 ~! w2.开启防火墙
- T2 T7 s' ]4 k' s# A2 h ufw enable
7 T h5 r9 f7 s, J* G. |3.关闭防火墙: u& A6 j/ M% H' f) R
ufw disable
p; [' u. w1 N a+ j2 v/ j4.查看防火墙版本6 y! N$ ]5 h4 K7 C Q5 E4 x
ufw version
x, ]( Z8 e u( _% p& z: i4 F5.默认允许外部访问本机4 z* ?% L$ Z1 W
ufw default allow
) [% V, P5 M8 n j, {0 w6.默认拒绝外部访问主机
& S8 t7 W4 A8 |/ q: v ufw default deny
2 Y' h1 R9 e' }& u, I8 f, {7.允许外部访问53端口/ n7 w) m2 n/ b0 ^
ufw allow 53: n F! _( N }7 T* I
8.拒绝外部访问53端口# l( \( I Z5 n0 X1 D1 g
ufw deny 532 e4 Q- r, M2 m$ X, g
9.允许某个IP地址访问本机所有端口0 g6 \8 g4 ^; g! B
ufw allow from 192.168.13.1
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安装防火墙
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sudo apt install ufw
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% Y, g9 W# k4 P! E' r查看UFW状态2 n1 W, e& @. s5 Q0 N
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sudo ufw status verbose
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配置允许访问的应用
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. \7 |0 U2 Z* d" H" \" U5 wufw allow ssh/ Y! b7 u, x% q
7 P) _" ^# A5 T4 U" K启用 UFW
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7 F& T( f9 L0 C+ T# @: r; Qufw enable
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% q$ H" N9 S6 V( K8 S) K: _禁止访问端口: n. Y- k/ L; \6 ]+ B. R
. e3 K3 [5 @! U/ u( G0 `5 kufw deny 2049/tcp7 L, K/ T _* ^+ r" A
ufw deny 2049/tcp9 x; W6 B. ?: K: J# I
7 Z o2 p5 v. `$ P查看UFW 允许列表7 h9 Y. I- T1 G) X1 K
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ufw app list
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8 [( ^4 x! H0 ^# |允许子网内所有的 IP，你可以 CIDR 的格式来配置, R% k! v$ D1 `, f8 [1 P" k, a
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sudo ufw allow from 192.168.10.0/24
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" s! O" q& ~) |- \+ y" Gmaster节点防火墙配置示例
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# ufw status$ V4 t% G! l2 i) M1 \: @
Status: active
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To Action From
+ {+ H4 }! r) O& N: l# r-- ------ ----
( |. C3 Z( U/ E# \- G5 \( S) A22/tcp ALLOW Anywhere
3 [3 M3 g6 o2 r; d0 N; i2049/tcp DENY Anywhere D1 w% |) P7 n p7 ^2 A2 z% q+ h! {( ~
9300/tcp DENY Anywhere
% X" j0 Y2 O& i& G8 M4 j$ p( C3399/tcp ALLOW Anywhere
8 F c+ n( M C" U2 E9 g3399/udp ALLOW Anywhere7 P+ l, ^- Q/ z9 T j
22/udp ALLOW Anywhere) P+ ?9 b/ k" G z3 N; a+ v
80/tcp ALLOW Anywhere, {7 I8 x% {$ ]& `: M
80/udp ALLOW Anywhere: \8 @. T* _4 `$ N
6443/udp ALLOW Anywhere9 _" z5 ~+ S/ V
6443/tcp ALLOW Anywhere i0 M, t! W& \2 Q5 f) j
111/tcp ALLOW Anywhere2 T) A- o+ w/ G% U* G
111/udp ALLOW Anywhere0 q4 @) B3 [% F% F3 {9 w$ n
2049/udp ALLOW Anywhere* U+ ~* G9 r3 U+ a8 G8 O2 E
13025/tcp DENY Anywhere2 f, ^9 F {. a
13025/udp DENY Anywhere
+ o( U* A% s7 p9 X4 \+ K1110/udp ALLOW Anywhere
% Y2 b( P* \6 F E1110/tcp ALLOW Anywhere7 B& \# W8 Q+ o0 U5 q5 v
2049 DENY Anywhere
3 n- g D9 M! ~ T$ t111 ALLOW Anywhere
; S$ V$ |/ H$ b. ?1 ~13025 ALLOW Anywhere
) ~ n% [, t- UAnywhere ALLOW 192.168.10.23
* r1 ]$ O; d" BAnywhere ALLOW 192.168.10.253 N! `) c" p- p$ ?
Anywhere ALLOW 192.168.10.0/245 x6 a, m2 {& z$ ]
3399 ALLOW Anywhere
6 u* L2 J1 m1 Q/ K% L% H7 f22 ALLOW Anywhere
) Z5 J, U3 ?4 G0 E: F22/tcp (v6) ALLOW Anywhere (v6)8 ^2 U* Z6 W& L4 }
2049/tcp (v6) DENY Anywhere (v6)
9 m) e- D$ b) P7 H' U5 |9300/tcp (v6) DENY Anywhere (v6)
- P- C6 b; r$ L$ l3399/tcp (v6) ALLOW Anywhere (v6)" z- ~6 L+ o& K p; `
3399/udp (v6) ALLOW Anywhere (v6)
! j% i1 D0 Q2 ^$ H# _ ~- |22/udp (v6) ALLOW Anywhere (v6)# C# {7 s# q' i. d
80/tcp (v6) ALLOW Anywhere (v6)
; ?2 Y3 c& e- r5 H }$ |! I5 K80/udp (v6) ALLOW Anywhere (v6)0 q! m/ `. B- r' R3 u
6443/udp (v6) ALLOW Anywhere (v6)
# N$ q& c2 k9 V Z# U; |6443/tcp (v6) ALLOW Anywhere (v6)8 Q3 Y3 p0 g/ V. p% S& L) M
111/tcp (v6) ALLOW Anywhere (v6)
" \7 f0 h" x+ B! \3 H1 h111/udp (v6) ALLOW Anywhere (v6) p: p8 h+ t& a% [) l S
2049/udp (v6) ALLOW Anywhere (v6)/ y) b$ M7 T3 j. |8 c6 E
13025/tcp (v6) DENY Anywhere (v6)- g! y6 U* y, D4 H) p1 q V
13025/udp (v6) DENY Anywhere (v6)5 U1 ?# \+ {. Y) z5 O; z
1110/udp (v6) ALLOW Anywhere (v6)0 O4 z! b8 s5 p$ @, [! ?. [
1110/tcp (v6) ALLOW Anywhere (v6)6 V/ X8 [3 ?4 j. T
2049 (v6) DENY Anywhere (v6)" m( B- | o0 ~
111 (v6) ALLOW Anywhere (v6)
3 ?" m0 Q( C8 \" m0 T2 J' S# J13025 (v6) ALLOW Anywhere (v6) a6 x7 Z3 K4 w) m, W) ^* T8 C" X
3399 (v6) ALLOW Anywhere (v6)
0 E6 ?+ @ j! R3 t; X* V22 (v6) ALLOW Anywhere (v6)
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发表于 2022-1-13 15:58:27