Computers 'n Stuff: Advanced Siemens Gigaset SE515 configuration

I here share the resolutions for my Linux problems so they might safe somebody some time.

Thursday, March 23, 2006 parmanent link to this post

Advanced Siemens Gigaset SE515 configuration

The Siemens Gigaset SE515 runs some kind of Linux as the operatign system. This is interesting since it fetures a tty terminal to which you could log on using telnet.

using a dos- or unix console type:

#telnet se515

and the SE515 will talk to you.

However, its a little bit difficult to access the console on the SE515. First you have to downgrade to some firmware version (dont remember which one though) and log on as the user admin. The password will be the same as the pass you use to log on using the HTML interface. Then you 'll need to create a new user. If your happy with that firmware, you don't need to bother.

Now you can upgrade and log on again. If you log on as admin again you wont have root rights but if you log on as the new user you created you'll have root privileges.

With root provileges you have some more power over the firewall than you would have using the HTML interface alone if know how to use

#iptables

Now you can activate MSS clamping on the router which comes in handy if you don't want to adjust MTU of your network device but still like to avoid TCP packet fragmentation when using the DSL uplink provided by the SE515 Wlan Router.

# iptables -A FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS  --clamp-mss-to-pmtu


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