I am running Knoppix over diskless clients and have had success booting up said clients over a network from a host system. I can give the clients internet access by enabling the proxy server, Squid, and configuring some options. Clients then have to have their web browser settings edited to include the proxy server settings.
My question is, is there a way for the clients to boot up Knoppix and already have the browsers configured to use the proxy server? That way they can immediately have access to the internet. Having to individually tell the browsers on each client to use a certain IP address and port number for the proxy is a bit too time consuming for my needs.

TP-Link TL-SG105 5-Port Gigabit Ethernet Unmanaged Metal Desktop Network Switch
$19.99
NETGEAR GS308EP Essential Series 8-Port Gigabit PoE+ Unmanaged Switch
$49.99
Cisco WS-C3650-12X48UR-L 48-Port Stackable Layer 3 8x10G SFP+ Port Switch
$129.99
TP-Link TL-SG1048 48-Port Gigabit Rackmount Switch New Factory Sealed
$199.99
10-Port Gigabit PoE Network Switch with 8 PoE+ Ports with 2 Combo SFP Slots 125W
$39.99
TP-Link TL-SG2210P 10-Port Gigabit Smart Switch w/ 8-Port PoE+ NO AC SKU 25597
$36.98
Arista DCS-7050SX-64-R 48P 10GbE SFP+ 4P 40GbE QSFP+ RA Switch
$115.00
Arista DCS-7010T-48-R 48P 1GbE 4P 10GbE SFP+ RA Switch with rack mounts
$69.00
Linksys LGS328MPC 24-Port Managed Gigabit PoE+ Switch with 4 10G SFP+ Uplinks
$224.95
Cisco Catalyst 2960-48TT-L 48-Port Fast Ethernet Managed Rackmount Switch
$46.99