Tag: linux

Using Tmux

A long time ago I discovered screen. It made it possible to start applications in Linux and then disconnecting the SSH session, without stopping the applications. It was magic: otherwise the the applications just terminated if the SSH connection was lost. Then I heard about tmux. It was like screen on steroids! I could split […]

LDAPS Problem: Can’t contact LDAP server (-1)

LDAP authentication problem in the customer environment: The error message was received right after entering the password. Tshark says: 1 0.000000000 → TCP 74 44780 → 3269 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 SACK_PERM=1 TSval=2891116193 TSecr=0 WS=128 2 0.001225814 → TCP 74 3269 → 44780 [SYN, ACK] Seq=0 Ack=1 Win=8192 Len=0 MSS=1460 […]

Linux Routing Memos

These are just small hints and memos what to do on a Debian Linux setup. This is not a complete guide on doing a secured routing environment with Linux. /etc/sysctl.conf: net.ipv4.ip_forward=1 Configure /etc/network/interfaces iptables -t nat -A POSTROUTING -o <upstream_interface> -j MASQUERADE apt-get install iptables-persistent apt-get install iftop apt-get install conntrack conntrack -L -s […]

NetBox Install on Debian 9

When installing NetBox on Debian 9 and Apache, the instructions in http://netbox.readthedocs.io/en/latest/ are fine, just some small additional operations are needed. The libapache2-mod-wsgi-py3 package needs to be installed as well, otherwise you will get errors about the “WSGIPassAuthorization on” command when starting Apache [this has later been addressed in commit b917e8d] Disable the “000-default” site […]