The DHCP (Dynamic Host Configuration Protocol) app provides automatic IP settings to devices (computers, smartphones, tablets, printers etc.) connecting to your network. If you are using this server to create a new network, replace an existing router or replace a server that currently provides DHCP service to your LAN, installing and configuring this app is recommended.
Documentation for this app can be found here.
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The Intrusion Prevention app is a plugin to the Intrusion Detection system. The service dynamically creates firewall rules (iptables) to block IP packets if a packet stream matches a known attack signature. Signatures are provided by the intrusion detection app, containing over 1000 known attack vectors. An additional 8,000-10,000 signatures are available (and continually updated) via the IDS update subscription from ClearCenter (app available in the Marketplace).
For servers configured to provide on-premise mail service, the greylisting app can dramatically reduce the amount of spam reaching user's mailboxes. The mail transfer agent (MTA) will temporarily reject any attempt to deliver mail to the server from an unknown source. MTA's from legitimate sources will automatically queue the mail and attempt to deliver again while spammers will typically move on, not bothering to resend the message after a short delay. If your users are wasting time sifting through their inboxes as a result of spam, this app can significantly improve the situation. One disadvantage of implementing greylisting is the delay it invokes on receiving mail from new users - essentially destroying the near-instantaneous communication that people have come to expect.
Security certificates are used to secure various apps that you use on a day to day basis.
The Protocol Filter is an application layer packet classifier. The service attempts to identify an application as data packets pass through the gateway and classify them according to known protocols. If successfully identified, user sessions can be blocked based on an administrator's preference and/or policy. With more and more applications like file-sharing and Internet Messaging abusing standard ports designated for legitimate services, the protocol filter app can be a valuable tool in an administrator's desire to control what types of traffic are allowed on the network.
ABOUT THIS APP
July 31, 2012
INTRODUCED TO MARKETPLACE:
July 13, 2012