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Yes, you could have a cron job that issues some iptables commands:<br />
<br />
to open a port redirect:<br />
iptables -t nat -I PREROUTING -p tcp --dport 8080 -j DNAT --to-destination 192.168.1.100:80<br />
<br />
to close the port redirect:<br />
iptables -t nat -D PREROUTING -p tcp --dport 8080 -j DNAT --to-destination 192.168.1.100:80<br />
<br />
You can connect to the IPcop box as follows:<br />
<a href="http://www.ipcop.org/index.php?name=FAQ&id_cat=18" rel="ugc">http://www.ipcop.org/index.php?name=FAQ&id_cat=18</a><br />

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@blaz<br />
sorry i was just monitoring this question to see what answer people give, as i have ipcop aswell<br />
<br />
but one thing, are you sure that you can execute iptables command in ipcop<br />
because last night i was looking for iptables file but ipcop does not have anything in the system so that mean you might not execute normal iptables rules<br />
<br />
have a look to this one<br />
<a href="http://www.ntxserver.com/wiki/index.php/Iptables_For_Ipcop" rel="ugc">http://www.ntxserver.com/wiki/index.php/Iptables_For_Ipcop</a>
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I must say I do not use ipcop, so I am not sure. But since iptables is the core linux kernel firewall I suspect that ipcop uses it for firewalling. <br />
<br />
The following link suggests that iptables is installed on the system:<br />
<a href="http://www.ipcop.org/index.php?module=pnWikka&tag=IPCopSoftwares" rel="ugc">http://www.ipcop.org/index.php?module=pnWikka&tag=IPCopSoftwares</a><br />
<br />
<br />
The following link contains this quote<br />
&quot;IPCop uses the Linux Netfilter or IPTables firewall facility to maintain a stateful firewall.&quot;<br />
<a href="http://www.ipcop.org/1.4.0/en/admin/html/Info-AW.html" rel="ugc">http://www.ipcop.org/1.4.0/en/admin/html/Info-AW.html</a><br />
<br />
So based on this iptables should be available.
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yah , it has iptables installed because it show result of<br />
<br />
iptables -L<br />
<br />
but it does not have iptabls files , it stores some where else may be the link i said iptables as IPT format, dont know....<br />
<br />
the one i got its in production environmnet , so cant play witih it..<br />
other wise i would of see ...
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What do you mean by &quot;but it does not have iptabls files&quot;? <br />
What iptables files? My solution does not need any files but iptables executable. If &quot;iptables -L&quot; works then I believe my rules will work. But I did not test it on an ipcop machine.
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omm cant explain , ok i will install ipcop in a test mechine .. will come back to you 
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technically whint the GUI in IPCop i can enable/disable ports at will, however, I'm wondering if I can schedule it. &nbsp;Thanks for all you replies so far.
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I have an IPCop box and we have port forwarding setup. &nbsp;Is there anyway to schedule those ports being open and closed? &nbsp;Maybe through a cron job on the box? &nbsp;Any ideas would be great. &nbsp;Thanks.
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I have an IPCop box and we have port forwarding setup.  Is there anyway to schedule those ports being open and closed?  Maybe through a cron job on the box?  Any ideas would be great.  Thanks.

IPCop Port Forwarding

Security is the protection of information systems from theft or damage to the hardware, the software, and the information on them, as well as from disruption or misdirection of the services they provide. The main goal of security is protecting assets, and an asset is anything of value and worthy of protection.  Information Security is a discipline of protecting information assets from threats through safeguards to achieve the objectives of confidentiality, integrity, and availability or CIA for short. On the other hand, disclosure, alteration, and disruption (DAD) compromise the security objectives.

Security

The variety of Linux distributions creates myriad issues relating to configuration and operations when computers are networked, not the least of which is the use of various network management applications, some of which are included with specific distributions, while others are standalone applications.