ICMPv4-unreach-(net|host|frag-needed|admin); ICMPv4-timed-(ttl|reass); ICMPv6-unreach-(no-route|admin-prohibited|addr|port|reject-route); ICMPv6-too-big; ICMPv6-timed-(hop-limit|reass); ICMPv6-parameter-unrec-option; ICMPv6-err-expansion. 似乎人们对什么是安全的ICMP数据有不同的看法,通常认...
iptables 从入门到应用 https://www.cnblogs.com/reaperhero/category/1427210.html 网络错误定位案例 ICMP host *** unreachable - admin prohibited https://www.cnblogs.com/sammyliu/p/4981194.html cni flannel iptables -t filter -D FORWARD -j REJECT --reject-with icmp-host-prohibited https://www....
ICMPv4-unreach-(net|host|frag-needed|admin); ICMPv4-timed-(ttl|reass); ICMPv6-unreach-(no-route|admin-prohibited|addr|port|reject-route); ICMPv6-too-big; ICMPv6-timed-(hop-limit|reass); ICMPv6-parameter-unrec-option; ICMPv6-err-expansion. 似乎人们对什么是安全的ICMP数据有不同的看法,通常认...
"host %s unreachable - tos prohibited", GET_IPADDR_STRING(dp->icmp_ip.ip_dst)); break; case ICMP_UNREACH_FILTER_PROHIB: (void)snprintf(buf, sizeof(buf), "host %s unreachable - admin prohibited filter", GET_IPADDR_STRING(dp->icmp_ip.ip_dst)); ...
"host %s unreachable - admin prohibited filter", GET_IPADDR_STRING(dp->icmp_ip.ip_dst)); break;case ICMP_UNREACH_HOST_PRECEDENCE: (void)snprintf(buf, sizeof(buf), "host %s unreachable - host precedence violation", GET_IPADDR_STRING(dp->icmp_ip.ip_dst)); ...
(1), length88)10.251.0.1>10.251.0.47: ICMP host10.107.2.145unreachable - admin prohibited, length68(tos0x0, ttl63, id19939, offset0, flags [DF], proto TCP (6), length60)10.251.0.47.35644>10.107.2.145.5443: Flags [S], cksum0x1854(incorrect ->0x1127), seq3760945103, win28200, ...
可以很容易发现，在我们的网络上把接在路由器s u n上的拨号S L I P链路断开，然后试图通过该 S L...
iptables -t filter -I INPUT -i eth4 -p icmp -j DROP 1. -i选项是用于判断报文是从哪个网卡流入的,-i选项只能用于PREROUTING链、INPUT链、FORWARD链, 使用-o选项,匹配报文将由哪块网卡流出,-o选项只能用于FORWARD链、OUTPUT链、POSTROUTING链。
"host %s unreachable - tos prohibited", GET_IPADDR_STRING(dp->icmp_ip.ip_dst)); break;case ICMP_UNREACH_FILTER_PROHIB: (void)snprintf(buf, sizeof(buf), "host %s unreachable - admin prohibited filter", GET_IPADDR_STRING(dp->icmp_ip.ip_dst)); ...
{ ICMP_UNREACH_TOSHOST, "host %s unreachable - tos prohibited" }, { ICMP_UNREACH_FILTER_PROHIB, "host %s unreachable - admin prohibited filter" }, { ICMP_UNREACH_HOST_PRECEDENCE, "host %s unreachable - host precedence violation" }, { ICMP_UNREACH_PRECEDENCE_CUTOFF, ...