syn request block using iptables

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nike
Posts: 47
Joined: 2018/05/07 14:05:24

syn request block using iptables

Post by nike » 2022/08/06 07:12:31

sir
i am using centos 7 with firewall (iptables) security. Maxmimum port of web server are blocked. In iptables' log i found more than 500 syn request are coming from a particular ip address on that block port (44538) in one second . it is happened also on other blocked port.

"SRC=92.63.197.83 DST=192.168.1.240 LEN=40 TOS=0x00 PREC=0x00 TTL=237 ID=42752 PROTO=TCP SPT=43824 DPT=44538 WINDOW=1024 RES=0x00 SYN URGP=0"

1) Is it vulnerable for web server ?
2) how to protect or kick this type of request ?

please help ....

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