ICMP outoging traffic at centos 6.7

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Hi,


>From last some days I am facing the unexpected huge ICMP traffic is going
out from Server.


I have blocked icmp ports in iptables and if I execute the Ping manualy its
blocking.


Some process is send this huge traffic. Below is tcpdump output.


================================

16:23:27.817856 IP (tos 0xc0, ttl 64, id 55278, offset 0, flags [none],
proto ICMP (1), length 104)

    example.com > ***.***.***.***: ICMP host example.com unreachable -
admin prohibited, length 84

        IP (tos 0x0, ttl 56, id 52085, offset 0, flags [DF], proto TCP (6),
length 76)

    ***.***.***.***.5189 > example.com.https: Flags [P.], cksum 0xa427
(correct), seq 2571871600:2571871636, ack 1159342022, win 65535, length 36

================================


How this can be controlled ?


Thanks,

Shital
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