5、 ICMP和谈的平安设置装备摆设。对于进入ICMP流,我们要禁止ICMP和谈的ECHO、Redirect、Mask request。也需要禁止TraceRoute呼吁的探测。对于流出的ICMP流,我们可以许可ECHO、Parameter Problem、Packet too big。还有TraceRoute呼吁的使用。+ ?3 I% K0 U1 X; Y
! outbound ICMP Control- |6 ^4 Q2 F) H4 a! A9 n) q6 x
Router(Config)# access-list 110 deny icmp any any echo7 f% D0 z( a) p$ X5 k' o
Router(Config)# access-list 110 deny icmp any any redirect
) p- G! r S! r2 p Router(Config)# access-list 110 deny icmp any any mask-request
- v6 P% }, [3 n; p2 j2 h* T" P Router(Config)# access-list 110 permit icmp any any' b4 u+ I G ]- b( f, i& p0 \
! Inbound ICMP Control9 D6 y1 J' V( q4 [3 n$ q
Router(Config)# access-list 111 permit icmp any any echo% D- T( _2 w6 j
Router(Config)# access-list 111 permit icmp any any Parameter-problem3 k! B, e+ b4 v
Router(Config)# access-list 111 permit icmp any any packet-too-big9 I6 y+ d7 J! p _
Router(Config)# access-list 111 permit icmp any any source-quench
0 m1 G& o* o8 m2 N+ C4 G' t Router(Config)# access-list 111 deny icmp any any
+ t% n& J8 M: h5 [4 u, [ ! Outbound TraceRoute Control
4 j4 B! P# t) m% C Router(Config)# access-list 112 deny udp any any range 33400 34400
. X7 B* i- y& m' @! o+ f0 h; A1 b ! Inbound TraceRoute Control7 X' ?, j0 F$ h, B2 z. b# i3 _
Router(Config)# access-list 112 permit udp any any range 33400 34400 %26lt;/P%26gt;%26lt;P%26gt;) N# X* }& z0 b: t6 g7 u7 B+ W
6、 DDoS(Distributed Denial of Service)的提防。
; S9 [/ w: _7 M5 t ! The TRINOO DDoS system& e2 H# }- }) t g0 e0 `7 I
Router(Config)# access-list 113 deny tcp any any eq 27665 </p> Router(Config)# access-list 113 deny udp any any eq 31335
$ R5 t! c9 [; h Router(Config)# access-list 113 deny udp any any eq 27444/ u8 `; r" x# r) Y1 }( e1 e
! The Stacheldtraht DDoS system' l$ f0 r) z2 T& h6 L# v5 ^
Router(Config)# access-list 113 deny tcp any any eq 16660
* K d+ X; ~: I& F# F0 U Router(Config)# access-list 113 deny tcp any any eq 65000! q- B( V2 }( @. h, o+ \
! The TrinityV3 System, w" D* g0 Y6 l4 t- N
Router(Config)# access-list 113 deny tcp any any eq 33270 w8 V' p) |) G9 ~8 ^$ J
Router(Config)# access-list 113 deny tcp any any eq 391687 Z) p4 w1 o+ p# e7 v& s
! The SubSeven DDoS system and some Variants- x7 K+ k( o s. F, V
Router(Config)# access-list 113 deny tcp any any range 6711 6712+ {2 G% T- |$ o8 n* V
Router(Config)# access-list 113 deny tcp any any eq 6776
+ p5 B2 f- G/ N% d& E# z( a Router(Config)# access-list 113 deny tcp any any eq 6669
* o9 R5 m/ z' D$ F, e0 A% E Router(Config)# access-list 113 deny tcp any any eq 2222# s. G. I7 x8 f& n! L, d* r
Router(Config)# access-list 113 deny tcp any any eq 70001 W+ ~8 L5 V" {
Router(Config)# access-list 113 permit ip any any
8 l* @9 s3 W, Z: c7 U& E Router(Config-if)# ip access-group 113 in
$ \2 r! |; ^4 r$ } 7、 Sql蠕虫的提防
* H. B# l) A, a2 ?( O Router(Config)# access-list 114 deny udp any any eq 14343 u! N$ A0 N" D3 s0 C3 d
Router(Config)# access-list 114 permit ip any any0 ~& }1 g1 y0 A8 c7 e
Router(Config-if)# ip access-group 114 in |