| Port No | 1701 |
| Service Name | l2tp |
| RFC Doc | 0 |
| Protocol | TCP |
| Description | Layer 2 tunneling protocol is an older VPN technology that supports a wide variety of transfer mechanisms. |
| Reference Link | Port No:1701 Service Name:12tp Protocol:TCP |
| Attack | Any port 1701 traffic not to or from known VPN servers is most likely an attack Action:Port 1701 should be firewalled both inbound and outbound except for known VPN servers and clients to prevent data leakage |
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