Hello, On Mon, May 15, 2023 at 09:10:24AM +0800, Tom Reed wrote: > If I clean iptables in the destination host, this telnet will get success > at once. > > Any hints?
Why have you not used "iptables -vL" to show the packet counts of each rule so you can see which rules the packets match? They are clearly matching some other earlier rule, and I suggested that in the email you have replied to for the exact purpose of checking that out. Thanks, Andy -- https://bitfolk.com/ -- No-nonsense VPS hosting
