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Beginner

ASA 5500-x Duplicate TCP SYN from inside.

4 Apr 04 2016 15:35:14 419002 x.x.x.x 65378 x.x.x.x 3911 Duplicate TCP SYN from inside:x.x.x.x/65378 to inside:x.x.x.x/3911 with different initial sequence number

I am getting a ton of these messages. How do I stop this?

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Beginner

Hi,

Hi,

i think you are under an attack. Find the attackers and victims and kill them all. 

Just joke.

Seriusly, you resist some attackers. You can shun all of them with that command shun A.B.C.D.

You can write ACL deny all traffics from attackers.

Best regards.

View solution in original post

2 REPLIES 2
Highlighted
Beginner

Hi,

Hi,

i think you are under an attack. Find the attackers and victims and kill them all. 

Just joke.

Seriusly, you resist some attackers. You can shun all of them with that command shun A.B.C.D.

You can write ACL deny all traffics from attackers.

Best regards.

View solution in original post

Beginner

Thanks for the help

Thanks for the help

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