Block communication to port 6697 (IRC over TLS).

net/base/port_util.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/base/port_util.h"
 
 #include <limits>
 #include <set>
 
 #include "base/lazy_instance.h"
@@ skipping 66 matching lines @@
     995,     // pop3+ssl
     2049,    // nfs
     3659,    // apple-sasl / PasswordServer
     4045,    // lockd
     6000,    // X11
     6665,    // Alternate IRC [Apple addition]
     6666,    // Alternate IRC [Apple addition]
     6667,    // Standard IRC [Apple addition]
     6668,    // Alternate IRC [Apple addition]
     6669,    // Alternate IRC [Apple addition]
+    6697,    // IRC + TLS
     0xFFFF,  // Used to block all invalid port numbers (see
              // third_party/WebKit/Source/platform/weborigin/KURL.cpp,
              // KURL::port())
 };
 
 // FTP overrides the following restricted ports.
 const int kAllowedFtpPorts[] = {
     21,  // ftp data
     22,  // ssh
 };
@@ skipping 81 matching lines @@
 ScopedPortException::~ScopedPortException() {
   std::multiset<int>::iterator it =
       g_explicitly_allowed_ports.Get().find(port_);
   if (it != g_explicitly_allowed_ports.Get().end())
     g_explicitly_allowed_ports.Get().erase(it);
   else
     NOTREACHED();
 }
 
 }  // namespace net