Part 2 sounds like a MTU problem to me - check that you have your TCP MSS mangle settings set up properly. In general, RouterOS will configure this automatically, but sometimes it needs some additional hand-holding. Something like this should do the job: /ip firewall mangle add action=change-mss chain=forward disabled=yes new-mss=1452 out-interface=pppoe-client protocol=tcp tcp-flags=syn -----Original Message----- From: Public [mailto:public-bounces@talk.mikrotik.com.au] On Behalf Of Ben Jackson Sent: Monday, 27 October 2014 12:59 PM To: public@talk.mikrotik.com.au Subject: [MT-AU Public] ADSL: The Sequel Hi all, Two questions: 1) Any idea why a routerboard which has not had an admin password assigned to it would suddenly not accept the blank password and give a "incorrect password" error through winbox? Firewall rules were in place to only allow ip addressed from the internal LAN to connect so I'm pretty sure they weren't hacked and the password changed. 2) ADSL and MikroTik - the ongoing saga. I was following with much interest the recent thread started by Mike about which ADSL modem to use. Seems the TP-Link 8817 is the one to go for, however I have tried this modem in various installs and have still has intermittent slowness and just plain weird packet loss / latency. When I use MikroTik's as a simple DHCP client in conjunction with a cable modem everything seems fine, which means there is something amiss with the PPPoE dialler? I have tried messing with MTU settings in various places, but I really can't see MTU misconfiguration accounting for a loss of 8-10Mbps at times? I have had so many problems with residential ADSL performance with MikroTik routers I am unfortunately now looking for alternatives to MikroTik. Configurations I have tried: - Bridging various brands of modem, setting up PPPoE client on gateway interface of MikroTik. Performance using this method (in my experience) is terribly inconsistent and sometimes just downright awful. Modem sync speed is normally fine, download speeds are inconsistent and often very poor. ISP reckons they can see "authentication dropouts" from the PPPoE client. - Using the modem as a router and routing between the two (192.168.x.x) subnets using the MikroTik. This leads to double NAT issues, although strangely performance seems more consistent than option 1. - Using the MikroTik as a simple layer 2 bridge / switch which is assigned a static IP in the DHCP range assigned to the gateway (have also tried DHCP). This seems to give the best performance but it seems to obviate buying a MikroTik when it is not even being used as a router. Also means that I have to rely on the (often inferior) feature set of the modem to manage the network. It seems to me (and I don't really have any hard evidence to back this up, just experience) that the PPPoE client on the MikroTik is rather unstable compared to those running on the various modems I have tried, and any noise / glitches on the line will cause it to misbehave. So, anyone have any suggestions on alternate configurations (static routes?) Thoughts? Ben _______________________________________________ Public mailing list Public@talk.mikrotik.com.au http://talk.mikrotik.com.au/mailman/listinfo/public_talk.mikrotik.com.au