Block ports 4190 & 6679

Tests: web-platform-tests/wpt#45350.

Fixes #1663.

Author: annevk

fetch.bs

@@ -3225,6 +3225,7 @@ through TLS using ALPN. The protocol cannot be spoofed through HTTP requests in
  <tr><td>2049<td>nfs
  <tr><td>3659<td>apple-sasl
  <tr><td>4045<td>npp
+ <tr><td>4190<td>sieve
  <tr><td>5060<td>sip
  <tr><td>5061<td>sips
  <tr><td>6000<td>x11
@@ -3234,6 +3235,7 @@ through TLS using ALPN. The protocol cannot be spoofed through HTTP requests in
  <tr><td>6667<td>ircu
  <tr><td>6668<td>ircu
  <tr><td>6669<td>ircu
+ <tr><td>6679<td>osaut
  <tr><td>6697<td>ircs-u
  <tr><td>10080<td>amanda
 </table>