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The Graveyard - Products No Longer Supported => Routers / COVR => DIR-655 => Topic started by: gregrickaby on February 08, 2010, 11:17:21 AM

Title: LAN: Blocking SYN:ACK
Post by: gregrickaby on February 08, 2010, 11:17:21 AM
LAN:
Blocked outgoing TCP packet from 192.168.1.238:139 to 192.168.167.111:3706 as SYN:ACK received but there is no active connection

I also see these on the WAN:
Blocked incoming TCP packet from 208.69.32.230:80 to 24.214.104.180:1749 as FIN:ACK received but there is no active connection

What do these mean and how (especially on the LAN side) do I allow them?
Title: Re: LAN: Blocking SYN:ACK
Post by: EddieZ on February 08, 2010, 11:25:16 AM
Either enable uPnP or loosen the firewall setting. Although I wonder why Netbios would connect on this target.
Title: Re: LAN: Blocking SYN:ACK
Post by: gregrickaby on February 08, 2010, 11:30:38 AM
Dumb question, but where (I'm running firmware 1.33) is the option to turn on UPnP? I cannot find it.
Title: Re: LAN: Blocking SYN:ACK
Post by: Cobra on February 08, 2010, 11:44:09 AM
Dumb question, but where (I'm running firmware 1.33) is the option to turn on UPnP? I cannot find it.

Advanced > Advanced Network
Title: Re: LAN: Blocking SYN:ACK
Post by: gregrickaby on February 08, 2010, 11:50:42 AM
Yeah, it was already on. My firewall settings were off and it's still happening. Not a huge deal, but I wonder if it's causing the hang-ups and sluggishness on that computer when using a program to merge logs here at the radio station.

Thank you.
Title: Re: LAN: Blocking SYN:ACK
Post by: EddieZ on February 08, 2010, 12:09:49 PM
"no active connection"
There's no connection actually being made
Title: Re: LAN: Blocking SYN:ACK
Post by: Sammydad1 on February 08, 2010, 12:59:29 PM
Hi,

Here, I get lots of those active connections rejections from the SPI firewall on the 655 after one of the kids here has been trying to fileshare and his IP has been made public by the software doing the file sharing....These rejections occur after his computer has been blocked due to time of day blocking thru my schedules and access policies....the sharing software still is hitting on the IP it picked up during the day....
but now its been blocked by the router....

Hope that makes some sense....
Title: Re: LAN: Blocking SYN:ACK
Post by: sideload3d on February 08, 2010, 01:09:51 PM
Is the hard drive going to sleep on the sluggish computer? I would check the power settings.