http firewall, ftp firewall, One way visibility, SOCKS, IP Masquerade
-=item Configuring lynx or ncftp for going throught the firewall
+=item Configuring lynx or ncftp for going through the firewall
=back
=item Warnings
-multiple occurence of link target I<name>, line containing nothing but
+multiple occurrence of link target I<name>, line containing nothing but
whitespace in paragraph, file does not start with =head, No numeric
argument for =over, previous =item has no contents, preceding non-item
paragraph(s), =item type mismatch (I<one> vs. I<two>), I<N> unescaped