I have the Actiontec MI424WR-GEN3I router Firmware: 40.21.24
I just ran the Nessus scanner to check the security of the router and it found a whole bunch of problems.
Here is the list. Do you have a firmware upgrade to help with these issues?
SSL 64-bit Block Size Cipher Suites Supported (SWEET32)
SSL Certificate Cannot Be Trusted
SSL Certificate Signed Using Weak Hashing Algorithm
SSL DROWN Attack Vulnerability (Decrypting RSA with Obsolete and Weakened eNcryption)
SSL Version 2 and 3 Protocol Detection
SSL Weak Cipher Suites Supported
SSLv3 Padding Oracle On Downgraded Legacy Encryption Vulnerability (POODLE) SSL / TLS Renegotiation Handshakes MiTM Plaintext Data Injection
UPnP Internet Gateway Device (IGD) Protocol Detection