Security Concerns?

[Quackstar]

Ok, i'm tring to install an ftp server on a computer inside of a network, but the network person is concerned about security. He wants proof that other computers are going to be safe.

Here's my setup:
-Behind a router
-No account called administrator (stops 99% of ftp hack bots)
-Autoban on 6 attempts, bans for 999 hours
-Annonymus account removed
-New account has both numbers and letters and is 7+ chars
-Norton antivirus on computer with server, Kaspery (sp) on the rest (both have some kind of firewall)
-Only linking to two HD's on computer
-Tring to find a way to limit number of incoming connections, attempting to prevent a dos attack.

The network person is concerned that user can gain access to other computers on the network. My understanding was that thiers no way to get to it, because a) all links to folders or network shares are .ink's, and are downloaded, not redirected to destination folder. Can someone confirm this?

What other security risks are involved after i have used all the above settings? Can someone gain access to other computers on the network?

[botg]

Autoban on 6 attempts, bans for 999 hours

Disable autoban, it is entirely useless. It causes more problem (> 0) than it solves (<= 0).

Norton antivirus on computer with server, Kaspery (sp) on the rest (both have some kind of firewall)

That'd be the biggest security holes. Both are known to contain several critical security vulnerabilities. And since they are proprietary closed source software, you can't trust them at all. Could as well give a crack addict the key to your vault and tell him he'll get 5 dollars if he guards it until you return.

Tring to find a way to limit number of incoming connections, attempting to prevent a dos attack.

It is impossible to prevent DoS attacks. An dedicated attacker just floods you with so many packets that your connection will be 666% saturated, regardless on your configuration or if you even have any services running.

[Quackstar]

Ok, but what can an outside user do? My main question is if they can gain access to other computers on the network?

[insightpcs]

its possible, but if the correct security measures are in place (i.e. firewalls etc) then its very unlikely to happen

[botg]

Firewalls? More snake oil.

As far as FileZilla Server is concerned, it is not possible to access any directory that is not explicitly shared. Feel free to do a full code review to verify my claim.