thomson twg870ug modem/router as a gateway in my home LAN. I've set the password for the modem config page. The odd thing is that i can access router config page at 8080 port but the password and/or username i use locally (from LAN) isn't valid for outside connections.
I have defined forwarding rules for port 21, 22, 80, 8080 so i can connect to services from internet. The only odd thing is that i can access router config page at 8080 port but the password and/or usernme i use locally (from LAN) isn't valid for outside connections.
I'm going to recommend that you don't enable Remove Config Management. You make your entire network vulnerable by doing so. See this blog article where the author outlines the dangers of allowing remote access to Thomson routers:
In particular, the article mentions that ISP often hardcode a username and password for their use in accessing your router remotely. While this may be perfectly acceptable for remote support by the ISP, it also provides a potential avenue for hackers to take control of your router.
I would recommend installing a remote desktop client like Teamviewer (www.teamviewer.com, free for personal use) on a computer on your LAN, connecting to that computer and using it to access your router when needed.