Uncategorized – Page 2

firewall entries needed for active FTP connections for linux hosts running recent kernels

2017-11-132017-11-13 by .pQd

after upgrade to debian stretch i had to add the following firewall entries: for the FTP servers: for the nat-routers between FTP servers and FTP clients: for the FTP clients: related articles: https://home.regit.org/netfilter-en/secure-use-of-helpers/

ghettoVCB failing randomly on larger VMs

2017-04-29 by .pQd

at work we’re using happily ghettoVCB.sh to back up and restore VMWare ESXi VMs. since a few weeks we’ve started to experience occasional failures of backups, only for one – larger VMs. in the logs produced in /tmp/ghettoVCB-2017-04-xxx.log we got: or after some head scratching, watching at iostat -x 1 and ifstat -b 1 -i ... Read More

simplistic gatekeeper limiting access to apache2-based proxy

2017-02-052017-02-05 by .pQd

i had to expose some web-based application hosted on a windows server to the internet. i don’t put too much trust in the developers of that particular application so i did not want to make it reachable from the public internet. while i could not use ip address based whitelist i could count on the ... Read More