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  Topic: OpenVPN defect, bug, on MTU handling - you decide
SurprisedItWorks

Replies: 12
Views: 271

PostForum: Advanced Networking   Posted: Sat May 08, 2021 22:37   Subject: OpenVPN defect, bug, on MTU handling - you decide
it's as if the desired 1500 tunnel mtu isn't really provided over all paths, in my case from my OpenVPN client to various other AirVPN servers around the US. Most paths work at 1500, but some don't. ...
  Topic: OpenVPN defect, bug, on MTU handling - you decide
SurprisedItWorks

Replies: 12
Views: 271

PostForum: Advanced Networking   Posted: Sat May 08, 2021 17:43   Subject: OpenVPN defect, bug, on MTU handling - you decide
Hi @egc... just to add another data point for you. In 46069 in recent weeks I've done many ping tests for mtu across the OpenVPN client. My approach recently has NOT been the usual one of picking on ...
  Topic: How to block all protocols except TCP and UDP?
SurprisedItWorks

Replies: 6
Views: 85

PostForum: Advanced Networking   Posted: Sat May 08, 2021 17:22   Subject: How to block all protocols except TCP and UDP?
Forgive my rush here, which is keeping me from reading too closely. Couple of small things though.

First, as to what use -i lo might be the input chain. You can, for example, do

iptables -I IN ...
  Topic: How to block all protocols except TCP and UDP?
SurprisedItWorks

Replies: 6
Views: 85

PostForum: Advanced Networking   Posted: Fri May 07, 2021 15:00   Subject: How to block all protocols except TCP and UDP?
iptables -I INPUT -j DROP
iptables -A INPUT -p tcp -j ACCEPT
iptables -A INPUT -p udp -j ACCEPT

Not sure it's quite that simple. First of all, the INPUT chain is specific to traffic inbound for ...
  Topic: Creating VLAN and IPTABLES questions...
SurprisedItWorks

Replies: 11
Views: 139

PostForum: Advanced Networking   Posted: Fri May 07, 2021 14:46   Subject: Creating VLAN and IPTABLES questions...
although they mean the same, in some very narrow scenarios get_wanface is better than nvram get wan_iface Rolling Eyes Laughing
Thanks Alozaros... I always forget about this function! Am setting up a test n ...
  Topic: New Build - 04/24/2021 - r46446
SurprisedItWorks

Replies: 14
Views: 1925

PostForum: Marvell MVEBU based Hardware (WRT1900AC etc.)   Posted: Fri May 07, 2021 14:37   Subject: New Build - 04/24/2021 - r46446
Hi @o2bad455... FWIW, I just checked my iPhone XS on iOS 14.5.1 against five SSIDs for which Private Address is set, and all of them have the same MACs as they had months ago when I coded them into my ...
  Topic: Creating VLAN and IPTABLES questions...
SurprisedItWorks

Replies: 11
Views: 139

PostForum: Advanced Networking   Posted: Fri May 07, 2021 1:19   Subject: Creating VLAN and IPTABLES questions...
I believe that clients of different VLANs and different bridges have to communicate with each other at level 3 via router comm and through the firewall, but in dd-wrt the firewall permits it by defaul ...
  Topic: Creating VLAN and IPTABLES questions...
SurprisedItWorks

Replies: 11
Views: 139

PostForum: Advanced Networking   Posted: Thu May 06, 2021 18:49   Subject: Creating VLAN and IPTABLES questions...
By default everyone talks to everyone.

There is no way to keep users of a single VLAN from talking to each other. Same for LAN-port users if you have not configured VLANs. This connectivity is at t ...
  Topic: How To Guide: Encrypt DNS on your WRT
SurprisedItWorks

Replies: 15
Views: 11307

PostForum: Marvell MVEBU based Hardware (WRT1900AC etc.)   Posted: Thu May 06, 2021 15:40   Subject: How To Guide: Encrypt DNS on your WRT
On the WRT3200ACM the fallback build currently regarded as the relatively "stable" option is 44048. Before that one, 40009 was the goto build for some time. Newer builds are giving 3200 owne ...
  Topic: New Build - 04/24/2021 - r46446
SurprisedItWorks

Replies: 14
Views: 1925

PostForum: Marvell MVEBU based Hardware (WRT1900AC etc.)   Posted: Thu May 06, 2021 15:33   Subject: New Build - 04/24/2021 - r46446
iOS "randomization" of MAC addresses isn't what that term suggests. On a given wifi network, it will always use the same MAC address. I use that feature to manage some static leases.
  Topic: DD-WRT configuration from telnet
SurprisedItWorks

Replies: 2
Views: 108

PostForum: General Questions   Posted: Thu May 06, 2021 14:56   Subject: DD-WRT configuration from telnet
A few I used with 46069 on a Linksys WRT1900ACSv2:

nvram set ignore_wan_dns=1
nvram set lan_ipaddr=192.168.1.1
nvram set wan_dns='9.9.9.9 1.1.1.1'
nvram set dns_redirect=1
  Topic: Creating VLAN and IPTABLES questions...
SurprisedItWorks

Replies: 11
Views: 139

PostForum: Advanced Networking   Posted: Thu May 06, 2021 14:41   Subject: Creating VLAN and IPTABLES questions...
Yes, what I suggest would leave the one specific machine on the same network segment as everything else.

You need VLANs if you need subsets of the LAN ports to be isolated from each other. I have ...
  Topic: Creating VLAN and IPTABLES questions...
SurprisedItWorks

Replies: 11
Views: 139

PostForum: Advanced Networking   Posted: Wed May 05, 2021 23:19   Subject: Creating VLAN and IPTABLES questions...
If you aren't trying to isolate the one machine from the others but only from the WAN (internet), VLANs are the hard way to do it. Just give the one machine a static IP lease, either in GUI>Service ...
  Topic: SAMBA Mount Help
SurprisedItWorks

Replies: 5
Views: 274

PostForum: Marvell MVEBU based Hardware (WRT1900AC etc.)   Posted: Fri Apr 30, 2021 19:08   Subject: SAMBA Mount Help
Does the df command in the CLI show you the mounted drives? (Or do df -h for more human-readable numbers.)
  Topic: Optimal build for WRT3200ACM?
SurprisedItWorks

Replies: 2
Views: 245

PostForum: Marvell MVEBU based Hardware (WRT1900AC etc.)   Posted: Fri Apr 30, 2021 19:07   Subject: Optimal build for WRT3200ACM?
The standard advice, repeated many times in these Marvell threads, is 46069 (though do NOT enable "802.11w Management Frame Protection" if there are iOS devices connecting) or, if that still ...
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