Login to dd-wrt by ssh (+diffie-hellman-group1-sha1)

• Enable ssh from Services page

In your windows or linux machine, under the user home folder

• Create a folder ".ssh" (dot ssh)

• Create a file named "config" inside the .ssh folder

• Contents of config file

    Host  192.168.1.1 ddwrt.lan
        KexAlgorithms +diffie-hellman-group1-sha1
        user root
        port 2222

• Set the file permission to 600

             chmod 600 ~/.ssh/config (linux)

• Steps to set the file permission on windows

Right click config file > properties > security> Advanced>Disable inheritance

Right click config file > properties > security> Advanced>remove all from permission entries except your username

Right click config file > properties > security> Advanced> select your username > edit > full control 

Apply and close window

  

•     Run command  : 

ssh -o KexAlgorithms=+diffie-hellman-group1-sha1 root@ddwrt.lan

 

where root is the user name of router admin, ddwrt.lan is the hostname router, can be replaced with the ip address