X-Git-Url: http://git.grml.org/?a=blobdiff_plain;f=grml_tips;h=d53fa20d0b78a7e0dd3fc5bf230e0c237fe58129;hb=17bd99efa9c1586bf6cb4048753ee32598ff72e2;hp=c1633bc697b481f36f5fd3c7192cfcad09f31ff3;hpb=ea3400674c4cac2e4c8be5fcd05642a6e2648eaa;p=grml-tips.git diff --git a/grml_tips b/grml_tips index c1633bc..d53fa20 100644 --- a/grml_tips +++ b/grml_tips @@ -2673,4 +2673,101 @@ iptables -A FORWARD -i eth0 -o eth0 -d hostB -p tcp --dport portB -j ACCEPT iptables -A FORWARD -i eth0 -o eth0 -s hostB -p tcp --sport portB -j ACCEPT iptables -t nat -A POSTROUTING -p tcp -d hostB --dport portB -j SNAT --to-source hostA -- +Flash BIOS without DOS/Windows: +Dump flash info and set the flash chip to writable: +# flashrom + +Backup the original BIOS: +# flashrom -r backup.bin + +Notice: the following step will overwrite your current BIOS! +So make sure you really know what you are doing. + +Flash the BIOS image: +# flashrom -wv newbios.bin + +Also check out LinuxBIOS: http://linuxbios.org/ +-- +Enable shadow passwords: + +# shadowconfig on +-- +Set up an IPv6 tunneln on grml: + +# ipv6-tunnel start +-- +Set up console newsreader slrn for use with Usenet: + +% grml-slrn +-- +Calculate with IPv6 addresses: + +% ipv6calc + +For usage examples refer to manpage ipv6calc(8). +-- +Common network debugging tools for use with IPv6: + +% ping6 +% tracepath6 +% traceroute6 +% tracert6 +% nc6 +% tcpspray6 +-- +Set up NFS (Network File System): + +Server-side +~~~~~~~~~~~ +Make sure the relevant services are running on the server side: + +# /etc/init.d/portmap start +# /etc/init.d/nfs-common start +# /etc/init.d/nfs-kernel-server start + +Export shares via /etc/exports: + +/backups 192.168.1.100/24(rw,wdelay,no_root_squash,async,subtree_check) + +... or manually export a directory running: + +# exportfs -o rw,wdelay,no_root_squash,async,subtree_check 192.168.1.100:/backups + +and unexport a share running: + +# exportfs -u 192.168.1.100:/backups + +and every time when you modify /etc/exports file run + +# exportfs -ra + +Display what NFS components are running: + +# rpcinfo -p + +Display list of exported shares: + +# exportfs -v +or +# showmount -e + +Client-side +~~~~~~~~~~~ +Make sure the relevant services are running on the client side: + +# /etc/init.d/portmap start +# /etc/init.d/nfs-common start + +Verify that the server allows you to access its RPC/NFS services: + +# rpcinfo -p server_name + +Check what directories the server exports: + +# showmount -e server_name + +On the client side you can use something like the following in /etc/fstab: + +192.168.1.101:/backups /mnt/nfs nfs defaults,users,wsize=8192,rsize=8192 0 0 +--