info about network alert - packet dropped - tcp syn/fin

Alberto

What is the meaning of this alert ?

shiprasahu93

Hello @Alberto,

Looks like this is for a SMB connection. The reply packet from 10.10.92.200 had all three flags set ACK, RST and FIN which is not right. That is the reason the firewall had to drop this connection.

If there were network issues, you can take a look at the KB below:

https://www.sonicwall.com/support/knowledge-base/dropped-packets-because-of-invalid-tcp-flag/170504420448221/

Thanks!