I'm using zentyal2.2 as a my gateway,how can I implement following things in zentyal
1. Need to block ssh
If you look at nework services, there is already one for SSH.
You can them easily, in firewall, block this service for either access to Zentyal box or access to internet depending on your need that is not clear here.
2. How can restrict on email attachments size.For example,I've a account in gmail,then I can send mails with an attachment upto 1Mb after that I should allow user to upload more this size.
We discussed
this yesterday already isn't it
I mean you can ask 01 times, until you specifit better your scenario or Zentyal add some new feature, it is very unlikely that answer changes