X-Git-Url: http://git.grml.org/?a=blobdiff_plain;f=grml_tips;h=1fe0515c882110997d7d75aa84e8c5187b00b062;hb=56711571c2eda75ce12fceaa09ef75fe74ee814b;hp=31e3c5b8e82b3866638bd156d978130508457798;hpb=93ec8d5c6da3ae9bb8868c8cef545203d679ee72;p=grml-tips.git

diff --git a/grml_tips b/grml_tips
index 31e3c5b..1fe0515 100644
--- a/grml_tips
+++ b/grml_tips
@@ -2628,3 +2628,48 @@ and where grml is running:
 Then booting your client(s) via PXE should work without
 any further work.
 -- 
+Debugging SSL communications:
+
+% openssl s_client -connect server.adress:993
+
+or
+
+# ssldump -a -A -H -i eth0
+
+See http://prefetch.net/articles/debuggingssl.html for more details.
+-- 
+Remove bootmanager from MBR:
+
+# lilo -M /dev/hda -s /dev/null
+-- 
+Rewrite grub to MBR:
+
+# mount /mnt/sda1
+# grub-install --recheck --no-floppy --root-directory=/mnt/sda1 /dev/sda
+-- 
+Rewrite lilo to MBR:
+
+# mount /mnt/hda1
+# lilo -r /mnt/hda1
+-- 
+Create screenshot of plain/real console - tty1:
+# fbgrab -c 1 screeni.png
+-- 
+Create screenshot when running X:
+
+% scrot
+
+Tip: use the gkrellshoot plugin when using gkrellm
+-- 
+Redirect all connections to hostA:portA to hostB:portB, where hostA and hostB are
+different networks:
+
+Run the following commands on hostA:
+
+echo 1 > /proc/sys/net/ipv4/ip_forward
+iptables -t nat -A PREROUTING -p tcp --dport portA -j DNAT --to hostB:portB
+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
+-- 
+