we all know about exploits.although i must accept there are a few matters involved that i never understood.
say there is some bufferover flow in X server on port and we have a POC exploit for that too.
that exploit is either supposed to send a shell a shell on a perticular ip address or bind shell to some port.
we use that exploit and get into and vulnerable system.right?
NOW i have sen sometimesthat although there is buiffer overflow that can be exploit in some services.but when i use exploit to get it doesn't work why?
the exploitable service i was exploiting was running on a perticular port that i can't access anymore means it is down because of bufferoverflow caused by my exploit.
that sytem is running network blackjack on port 1025.
so my question is does firewall have to do anything with that?
if yes then any system having a firewall is not vulnerable to exploits?(atleast POC exploits i know about DLL injection that can bypass firewall security)
in my case when i exploit that perticular server shell is supposed to be bound on port XXXX but when i telnet to port XXXX i don't get anything although for sometime after i exploited that service port 1025 was busy(firewall port).wat does that mean?