MTU, DSL router and stalling TCP

Posted by user38843 on Server Fault See other posts from Server Fault or by user38843
Published on 2010-03-26T02:15:18Z Indexed on 2010/03/26 2:23 UTC
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mtu

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adsl

I am discovering stalling TCP connection problem. The problem arises when I try to scp stuff from remote system from my home network. My home network is connected to internet via PPPoE (ADSL+) and everything works perfectly once working from my home network. The ADSL router has MTU set to 1492 but with that setting the scp from remote system does not work - stalling! When I change the MTU on my router to 1500 the that scp works perfectly but internet accesses from my home network is very slow to most of the www sites - even local ones. Just wondering where the problem exists - my ISP blocking ICMP, etc? Thanks!

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