<trvalign="top"><td>RLogin<tdalign="center">513<tdalign="center">-<td>Optional for quick-login from RLogin clients (e.g. SyncTerm)
<trvalign="top"><td>SMTP<tdalign="center">25<tdalign="center">-<td>Necessary for receiving Internet e-mail and inter-BBS instant messages
<trvalign="top"><td>POP3<tdalign="center">110<tdalign="center">-<td>Allows BBS users to check their e-mail using standard Internet mail clients (e.g. Outlook Express)
<trvalign="top"><td>FTP<tdalign="center">21<tdalign="center">-<td>Allows access to the BBS file/download areas using a standard FTP client or web browser
<trvalign="top"><td>HTTP<tdalign="center">80<tdalign="center">-<td>Required for access to the BBS's web server
<trvalign="top"><td>NNTP<tdalign="center">119<tdalign="center">-<td>Allows BBS users to read and post messages using standard news readers/clients
<trvalign="top"><td>Gopher<tdalign="center">70<tdalign="center">-<td>Archaic protocol allows reading of messages and other BBS info
<trvalign="top"><td>IRC<tdalign="center">6667<tdalign="center">-<td>Allows Internet Relay Chat (IRC) clients to connect to your BBS
<trvalign="top"><td>Finger<tdalign="center">79<tdalign="center">79<td>Allows remote querying of BBS user info, who's online, and other BBS info
<trvalign="top"><td>SYSTAT<tdalign="center">11<tdalign="center">11<td>Allows remote querying of who's online (aka Active Users)
<trvalign="top"><td>QOTD<tdalign="center">17<tdalign="center">17<td>Allows remote querying of the current auto-message (aka Quote Of The Day)
<trvalign="top"><td>MSP<tdalign="center">18<tdalign="center">18<td>Allows incoming inter-BBS instant messages without SMTP connectivity
</table>
<p>Enabling connectivity to Synchronet through your firewall is <b>no different</b> than enabling connectivity to any other TCP/IP server. Follow your
firewall documentation for forwarding or opening ports for TCP/IP servers located "behind" the firewall. Your firewall may have the option of placing