Update point-to-site-about.md

Verbiage unclear on whether firewall port 443 needs inbound and/or outbound access.

Author: caseywatson

articles/vpn-gateway/point-to-site-about.md

@@ -18,9 +18,9 @@ A Point-to-Site (P2S) VPN gateway connection lets you create a secure connection
 
 Point-to-site VPN can use one of the following protocols:
 
-* **OpenVPN® Protocol**, an SSL/TLS based VPN protocol. An SSL VPN solution can penetrate firewalls, since most firewalls open TCP port 443, which SSL uses. OpenVPN can be used to connect from Android, iOS (versions 11.0 and above), Windows, Linux and Mac devices (OSX versions 10.13 and above).
+* **OpenVPN® Protocol**, an SSL/TLS based VPN protocol. An SSL VPN solution can penetrate firewalls, since most firewalls open TCP port 443 outbound, which SSL uses. OpenVPN can be used to connect from Android, iOS (versions 11.0 and above), Windows, Linux and Mac devices (OSX versions 10.13 and above).
 
-* Secure Socket Tunneling Protocol (SSTP), a proprietary SSL-based VPN protocol. An SSL VPN solution can penetrate firewalls, since most firewalls open TCP port 443, which SSL uses. SSTP is only supported on Windows devices. Azure supports all versions of Windows that have SSTP (Windows 7 and later).
+* Secure Socket Tunneling Protocol (SSTP), a proprietary SSL-based VPN protocol. An SSL VPN solution can penetrate firewalls, since most firewalls open TCP port 443 outbound, which SSL uses. SSTP is only supported on Windows devices. Azure supports all versions of Windows that have SSTP (Windows 7 and later).
 
 * IKEv2 VPN, a standards-based IPsec VPN solution. IKEv2 VPN can be used to connect from Mac devices (OSX versions 10.11 and above).
 
@@ -106,4 +106,4 @@ A P2S configuration requires quite a few specific steps. The following articles
 
 * [Configure a P2S connection - Azure native certificate authentication](vpn-gateway-howto-point-to-site-rm-ps.md)
 
-**"OpenVPN" is a trademark of OpenVPN Inc.**
+**"OpenVPN" is a trademark of OpenVPN Inc.**