mIRC always disconnected

[MiM]

As title says mIRC always disconnects after a minute or les of connection .but it doesn't say disconnected once it's disconnected ,but when I write something It doesn't respond ,and it says disconnected after the software ping the irc server or after i disconnect it my self.:cry:
Thanks in advance for your help :inlove::inlove:

[Cabalo]

Are you behind a NAT ?

[MiM]

Yes I WAS
thank you , greatly appreciate it:)
problem solved

[Cabalo]

:)