SO! es ist der router gewesen! http://www.magwag.plus.com/jim/tips-300t.html
Platform: Linux Stalling Interactive TCP Connections (ssh, ftp, telnet) When I moved from a Cable Modem to an ADSL connection I wanted a simple way to just swap out the Cable Modem box and slide in some kind of ADSL Modem, so I opted for the D-Link DSL 300T, which worked fine as a drop in replacement, until I tried to do an interactive ssh connection, the connection would get set up OK, but then it would hang when entering the interactive session. I tracked it down to the fact that ssh sets the Minimize-Delay IP_TOS flag on interactive sessions, and somewhere down the line these packets didn't seem to be routed correctly. I also discovered (later) that the same problem applied to UDP traffic when I found that my NTP traffic was also being discarded (so my computer's clock drifted out of sync). The solution I came up with was to add an iptables rule to reset the IP_TOS flag to Normal-Service on outgoing traffic from my PC: Note: TOS is now superseded by DSCP within the IETF, according to "man iptables", so the following commands have been adjusted accordingly. iptables --table mangle --append OUTPUT --jump DSCP --set-dscp 0x0 As my PC also acts as a masquerading gateway for my home network, I also added the following rule so that machines on my home network get the same fix: iptables --table mangle --append PREROUTING --jump DSCP --set-dscp 0x0 nun klapps auch mit dem linux *g* Gruss Andreas p.s. morgen stammtisch? -- ICQ: 304 760 315
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