I work for a rural school system. Recently we have had problems with
our internet connections coming and going. Yesterday I noticed an
Alert: SYN flood Attack error message. This alert is only present when
we are having problems. We are running our sonicwall in stealth mode
and already have the SYN flood protection enabled. Any help would be
greatly appreciated.
Thank you for any help you may be able to give.
mdwilson wrote:
> I work for a rural school system. Recently we have had problems with
> our internet connections coming and going. Yesterday I noticed an
> Alert: SYN flood Attack error message. This alert is only present when
> we are having problems. We are running our sonicwall in stealth mode
> and already have the SYN flood protection enabled. Any help would be
> greatly appreciated.
Contact your ISP about the problem. There is very little you can do at
your end. If a flood attack is coming in the line is flooded regardless
what protection you may have enabled on your firewall.
Gerald
On Mar 24, 5:03 pm, "mdwilson"
> I work for a rural school system. Recently we have had problems with
> our internet connections coming and going. Yesterday I noticed an
> Alert: SYN flood Attack error message. This alert is only present when
> we are having problems. We are running our sonicwall in stealth mode
> and already have the SYN flood protection enabled. Any help would be
> greatly appreciated.
>
> Thank you for any help you may be able to give.
TCP is a 3-way handshake. SYN packet it the first part of that
handshake. If you are in stealth mode then you SonicWall should drop
the unrequested packets. What port are the SYN packets coming in on?