Hallo everybody,
I successfully installed routertech-ar7rd-pspboot-1port-firmware-20090922 on a Dlink DSL-320T
I'm aware that it got pretty limited memory (8 MB) though I intend to use it as bridged modem and overcome some glitches of its vanilla firmware
http://www.csc.liv.ac.uk/~greg/projects/dlink.htmlI found out that Tools\System Diagnostics and telnet ps outputs provide different results.
System diagnostic mention thttpd twice but it does't list /sbin/utelnetd
81 root 1228 S /usr/sbin/thttpd -d /usr/www -u root -p 80 -c /cgi-bi
714 root 1228 S /usr/sbin/thttpd -d /usr/www -u root -p 80 -c /cgi-bi
telnet ps output mention tthtpd once and it lists /sbin/utelnetd as well.
I was wondering if it could be possible to disable utelnetd, since in another topic about another low memory device there was an advice to kill either SNTP and optionally thttpd to free some memory
The system diagnostic output threw me off a little as I was unable to explain the two thttpd instances or the lack of utelnetd
Is utelnetd spawned only when a client knock on port 23?
Was the 2nd httpd instance an artifact of sort?
I have another question related to /proc/sys/net/ipv4/netfilter/ip_conntrack_max 3079 default.
In my naive inexperienced thinking I would be willing to increase it up to 8192.
Though as I lack in understanding about its relation to memory consumption I hope somebody could point me to some resource to learn about those aspects:
If the memory needed to handle those connections is pre-allocated or if the remaining free memory (320Kb in my case) will be used on-demand.
If 320K would be enough to handle up to 3079 or if it would be necessary to reduce ip_conntrack_max or if possible to increase it according to some estimation formula.
Though I guess the firmware memory footprint cannot be reduced further for technical reasons I would appreciate if anybody could confirm this so to not have me unnecessarily wish for a modem only routertech release, and maybe advice me about a brand/device modem that support up to 8192 connections.
But anyway if the modem is set to bridged mode does ip_conntrack_max continue to apply even if the device is attached to a router/PC that is able to handle more than 3079 connections?
Any feedback comment will be greatly appreciated.