What TCP port does TeamViewer use?
port 5938
TeamViewer prefers to make outbound TCP and UDP connections over port 5938 – this is the primary port it uses, and TeamViewer performs best using this port. Your firewall should allow this at a minimum.
Does TeamViewer use port 443?
The ports used by TeamViewer are TCP 80, TCP 443 and TCP 5938.
What IP addresses does TeamViewer use?
The TeamViewer IP Address Range is 178.77. 120.0/24, which translates to 178.77. 120.1 – 178.77.
Does TeamViewer require port forwarding?
TeamViewer is an application that doesn’t require port forwarding unless you are trying to operating via a local LAN-based connection method, which, if you’re trying to forward ports, doesn’t sound like it here.
Is TeamViewer a security risk?
Secure Connections TeamViewer traffic is secured using RSA 4096 public/private key exchange and AES 256-bit session encryption. This technology is used in a comparable form for https/TLS and is considered completely safe by today’s standards.
Does TeamViewer use HTTP?
1 Answer. TeamViewer uses its own proprietary protocol. It is not documented, though its authentication layer has been partially analyzed: http://www.ixiacom.com/about-us/news-events/corporate-blog/magic-teamviewer.
Can TeamViewer be blocked?
Block the TeamViewer port TeamViewer connects through port 5938, but also tunnels via ports 80 (HTTP) & 443 (SSL) if 5938 is not available. To block it you have to log into your Firewall or Router and add a new outgoing firewall rule to stop TCP & UDP port 5938 from all source IP Addresses.
How does TeamViewer get through firewalls?
1 Answer. The software is communicating with a central server, and has made an outbound connection. When you start TeamViewer, it will try to make a direct connection, but if both directions fail that (ie. firewall or NATting at both places), then it will fall back on communicating through a server.
How secure is TeamViewer free?
All TeamViewer versions use full encryption. Encryption is based on 4096bit RSA private/public key exchange and 256 Bit AES session encoding. This uses the same security level as https/SSL and is considered completely safe by today’s standards.
Why can’t TeamViewer connect over ports 5938 or 443?
If TeamViewer can’t connect over port 5938 or 443, then it will try on TCP port 80. The connection speed over this port is slower and less reliable than ports 5938 or 443, due to the additional overhead it uses, and there is no automatic reconnection if the connection is temporarily lost. For this reason, port 80 is only used as a last resort.
What port does TeamViewer use for update checks?
Port 443 is also used for a few other things, including TeamViewer update checks. If TeamViewer can’t connect over port 5938 or 443, then it will try on TCP port 80.
What is Port 5938 used for?
Port 5938 Details. TCP is the most commonly used protocol on the Internet and any TCP/IP network. Whereas the IP protocol deals only with packets, TCP enables two hosts to establish a connection and exchange streams of data. TCP guarantees delivery of data and that packets will be delivered in the same order in which they were sent.
What is TeamViewer?
Your single source for the latest security, compliance, and system performance information. All TeamViewer servers are housed in state-of-the-art data centers that are compliant with ISO 27001 and leverage multi-redundant carrier connections and redundant power supplies.