slow connects

[mberni]

Hi!
We have a php-app which resides on a webserver within our DMZ with informix as the database backend.

now we experience very slow connections (i.e. the time to establish the databaseconnection, not the speed of datatransfers), will say a single connect via onsoctcp will take about 3 seconds.

when i do the same locally via dbaccess on the database server it still takes about 1 second.

a connect via onipcshm takes no time at all (which is obvious).

the database server is not busy and the time to connect is the same all time, i have monitored it using a crontab job, running once in a minute.

which parameters affect the time to connect?

 

[mberni]

Problem was a very restrictive syn-flood-protection setting in our firewall. we changed this to "watch-mode" and that solved the issue.