topic uio in Network Security

uio

prashantrecon — Mon, 11 Mar 2019 22:43:50 GMT

TCP OUTSIDE:192.168.1.1/80 INSIDE:10.1.196.77/56825 flags UfFRIO

TCP OUTSIDE:192.168.1.1/80 INSIDE:10.34.4.133/1223 flags UIO

TCP OUTSIDE:192.168.1.1/80

what is diffrence between two flags

Marvin Rhoads — Mon, 19 Mar 2012 13:32:56 GMT

All the connection flags are documented in the command reference here.

The first connection appears to be in the process of shutting down (inside and outside FIN completed)

Kimberly Adams — Mon, 19 Mar 2012 17:05:16 GMT

For a quick and easy view of what the flags are showing in the connections, I use the following site for a quick reference.

Thanks and please do rate helpful posts.

Kimberly

prashantrecon — Tue, 20 Mar 2012 06:59:35 GMT

TCP outside 10.x.x.x:9000 inside 10.x.x.x:1342, idle 0:00:05, bytes 203, flags UIO

TCP outside 10.x.x.x:9000 inside 10.x.x.x.x:1340, idle 0:00:43, bytes 62, flags UfFRIO

when i checked we are geeting the above flags. far end users are facing problem regarding accessing of site

Usually the flags should be UIO ?

Kimberly Adams — Tue, 20 Mar 2012 16:49:49 GMT

In my experience a good connection will have the flags UIO. Which is the following:

U = up

I = inbound data

O = outbound data

This is good data communications inbound and outbound for this connection.

Thanks and please rate helpful posts.

Kimberly

prashantrecon — Wed, 21 Mar 2012 05:41:57 GMT

CP outside 10.x.x.x:9000 inside 10.x.x.x.x:1340, idle 0:00:43, bytes 62, flags UfFRIO

But why this flags immediately after UIO ie after just 2 sec when excuted show connection command